[PATCH 00/19] OMAP: more clock/powerdomain/hwmod patches for 2.6.34

[PATCH 00/19] OMAP: more clock/powerdomain/hwmod patches for 2.6.34

[Paul Walmsley]

Hello,

Here are some more OMAP clock, clockdomain, powerdomain, and hwmod
patches intended for 2.6.34, posted in case anyone has any comments.


- Paul

---

Abhijit Pagare (1):
      ARM: OMAP4 clock domain: Add check for avoiding dependency related update.

Kevin Hilman (4):
      OMAP: omap_device: add omap_device_is_valid()
      OMAP: omap_device: when 'called from invalid state', print state
      OMAP3: clock: use std _MASK suffix for CM_FCLKEN_IVA2 defines
      OMAP2/3: PRCM: fix misc. compiler warnings

Mike Turquette (1):
      OMAP3630: Clock: Workaround for DPLL HS divider limitation

Ranjith Lohithakshan (2):
      OMAP2/3 clock: Extend find_idlest() to pass back idle state value
      AM35xx: Add clock support for new modules on AM35xx

Richard Woodruff (1):
      OMAP3 clock: introduce DPLL4 Jtype

Sanjeev Premi (1):
      OMAP3 clock: Check return values for clk_get()

Tero Kristo (1):
      OMAP3: Clock: Added IDLEST definitions for SGX

Thara Gopinath (5):
      OMAP2/3 PM: Adding powerdomain APIs for reading the next logic and mem state
      OMAP3 PM: Defining .pwrsts_logic_ret field for core power domain structure
      OMAP3 PM: Adding counters for power domain logic off and mem off during retention.
      OMAP3: hwmod: support to specify the offset position of various SYSCONFIG register bits.
      OMAP: HWMOD: Add support for early device register into omap device layer

Vishwanath BS (3):
      OMAP3 clock: Remove FreqSel for 3630
      OMAP3 clock: Introduce 3630 DPLL4 HSDivider changes
      OMAP3 clock: add support for 192Mhz DPLL4M2 output


 arch/arm/mach-omap2/Makefile                  |    3 
 arch/arm/mach-omap2/clkt2xxx_apll.c           |    2 
 arch/arm/mach-omap2/clock.c                   |   25 +-
 arch/arm/mach-omap2/clock.h                   |    6 
 arch/arm/mach-omap2/clock2xxx.c               |    5 
 arch/arm/mach-omap2/clock34xx.c               |  167 +++++++++++
 arch/arm/mach-omap2/clock34xx.h               |    7 
 arch/arm/mach-omap2/clock34xx_data.c          |  381 ++++++++++++++++++++++++-
 arch/arm/mach-omap2/clock44xx_data.c          |    1 
 arch/arm/mach-omap2/clockdomain.c             |   30 ++
 arch/arm/mach-omap2/cm-regbits-34xx.h         |   28 ++
 arch/arm/mach-omap2/cm.h                      |    3 
 arch/arm/mach-omap2/dpll3xxx.c                |   78 +++++
 arch/arm/mach-omap2/id.c                      |    3 
 arch/arm/mach-omap2/omap_hwmod.c              |  100 ++++++-
 arch/arm/mach-omap2/omap_hwmod_common_data.c  |   44 +++
 arch/arm/mach-omap2/pm-debug.c                |    5 
 arch/arm/mach-omap2/pm34xx.c                  |    2 
 arch/arm/mach-omap2/powerdomain.c             |   98 ++++++
 arch/arm/mach-omap2/powerdomains34xx.h        |    2 
 arch/arm/mach-omap2/prcm.c                    |   18 +
 arch/arm/plat-omap/include/plat/clock.h       |   16 +
 arch/arm/plat-omap/include/plat/cpu.h         |    2 
 arch/arm/plat-omap/include/plat/omap_device.h |    7 
 arch/arm/plat-omap/include/plat/omap_hwmod.h  |   73 ++++-
 arch/arm/plat-omap/include/plat/powerdomain.h |    4 
 arch/arm/plat-omap/include/plat/prcm.h        |    3 
 arch/arm/plat-omap/omap_device.c              |   61 +++-
 28 files changed, 1077 insertions(+), 97 deletions(-)
 create mode 100644 arch/arm/mach-omap2/omap_hwmod_common_data.c

[PATCH 01/19] OMAP: omap_device: add omap_device_is_valid()

[Paul Walmsley]

From: Kevin Hilman <khilman@deeprootsystems.com>

The omap_device struct contains a 'struct platform_device'.  Normally,
converting a platform_device pointer to an omap_device pointer
consists of simply doing a container_of(), as is done currently by the
to_omap_device() macro.

However, if this is attempted when using platform_device that has not
been created as part of the omap_device creation, the container_of()
will point to a memory location before the platform_device pointer
which will contain random data.

Therefore, we need a way to detect valid omap_device pointers.  This
patch solves this by using the simple magic number approach.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/plat-omap/include/plat/omap_device.h |    2 ++
 arch/arm/plat-omap/omap_device.c              |   16 ++++++++++++++++
 2 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/arch/arm/plat-omap/include/plat/omap_device.h b/arch/arm/plat-omap/include/plat/omap_device.h
index 76d4917..4677ff7 100644
--- a/arch/arm/plat-omap/include/plat/omap_device.h
+++ b/arch/arm/plat-omap/include/plat/omap_device.h
@@ -62,6 +62,7 @@
  *
  */
 struct omap_device {
+	u32                             magic;
 	struct platform_device		pdev;
 	struct omap_hwmod		**hwmods;
 	struct omap_device_pm_latency	*pm_lats;
@@ -81,6 +82,7 @@ int omap_device_shutdown(struct platform_device *pdev);
 
 /* Core code interface */
 
+bool omap_device_is_valid(struct omap_device *od);
 int omap_device_count_resources(struct omap_device *od);
 int omap_device_fill_resources(struct omap_device *od, struct resource *res);
 
diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c
index 5195dbb..40289e0 100644
--- a/arch/arm/plat-omap/omap_device.c
+++ b/arch/arm/plat-omap/omap_device.c
@@ -90,6 +90,8 @@
 #define IGNORE_WAKEUP_LAT		1
 
 
+#define OMAP_DEVICE_MAGIC 0xf00dcafe
+
 /* Private functions */
 
 /**
@@ -403,6 +405,8 @@ struct omap_device *omap_device_build_ss(const char *pdev_name, int pdev_id,
 	od->pm_lats = pm_lats;
 	od->pm_lats_cnt = pm_lats_cnt;
 
+	od->magic = OMAP_DEVICE_MAGIC;
+
 	ret = omap_device_register(od);
 	if (ret)
 		goto odbs_exit4;
@@ -589,6 +593,18 @@ int omap_device_align_pm_lat(struct platform_device *pdev,
 }
 
 /**
+ * omap_device_is_valid - Check if pointer is a valid omap_device
+ * @od: struct omap_device *
+ *
+ * Return whether struct omap_device pointer @od points to a valid
+ * omap_device.
+ */
+bool omap_device_is_valid(struct omap_device *od)
+{
+	return (od && od->magic == OMAP_DEVICE_MAGIC);
+}
+
+/**
  * omap_device_get_pwrdm - return the powerdomain * associated with @od
  * @od: struct omap_device *
  *

[PATCH 02/19] OMAP: omap_device: when 'called from invalid state', print state

[Paul Walmsley]

From: Kevin Hilman <khilman@deeprootsystems.com>

The omap_device_[enable|idle|shutdown] functions print a warning
when called from an invalid state.  Print the invalid state in
the warning messages.  This also uses __func__ to get the function
name.

Also, move the entire print string onto a single line to facilitate
grepping or error messages.  Recent discussions on LKML show
strong preference for grep-able code vs. strict 80 column limit.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/plat-omap/omap_device.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c
index 40289e0..c739a04 100644
--- a/arch/arm/plat-omap/omap_device.c
+++ b/arch/arm/plat-omap/omap_device.c
@@ -466,8 +466,8 @@ int omap_device_enable(struct platform_device *pdev)
 	od = _find_by_pdev(pdev);
 
 	if (od->_state == OMAP_DEVICE_STATE_ENABLED) {
-		WARN(1, "omap_device: %s.%d: omap_device_enable() called from "
-		     "invalid state\n", od->pdev.name, od->pdev.id);
+		WARN(1, "omap_device: %s.%d: %s() called from invalid state %d\n",
+		     od->pdev.name, od->pdev.id, __func__, od->_state);
 		return -EINVAL;
 	}
 
@@ -505,8 +505,8 @@ int omap_device_idle(struct platform_device *pdev)
 	od = _find_by_pdev(pdev);
 
 	if (od->_state != OMAP_DEVICE_STATE_ENABLED) {
-		WARN(1, "omap_device: %s.%d: omap_device_idle() called from "
-		     "invalid state\n", od->pdev.name, od->pdev.id);
+		WARN(1, "omap_device: %s.%d: %s() called from invalid state %d\n",
+		     od->pdev.name, od->pdev.id, __func__, od->_state);
 		return -EINVAL;
 	}
 
@@ -538,8 +538,8 @@ int omap_device_shutdown(struct platform_device *pdev)
 
 	if (od->_state != OMAP_DEVICE_STATE_ENABLED &&
 	    od->_state != OMAP_DEVICE_STATE_IDLE) {
-		WARN(1, "omap_device: %s.%d: omap_device_shutdown() called "
-		     "from invalid state\n", od->pdev.name, od->pdev.id);
+		WARN(1, "omap_device: %s.%d: %s() called from invalid state %d\n",
+		     od->pdev.name, od->pdev.id, __func__, od->_state);
 		return -EINVAL;
 	}
 

[PATCH 03/19] OMAP3: clock: use std _MASK suffix for CM_FCLKEN_IVA2 defines

[Paul Walmsley]

From: Kevin Hilman <khilman@deeprootsystems.com>

Add _MASK suffix to CM_FCLKEN_IVA2 bitfieds to conform with the rest
of the usage in cm-regbits-34xx.h of using _SHIFT and _MASK suffixes.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/cm-regbits-34xx.h |    2 +-
 arch/arm/mach-omap2/pm34xx.c          |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-omap2/cm-regbits-34xx.h b/arch/arm/mach-omap2/cm-regbits-34xx.h
index 6923deb..a76e835 100644
--- a/arch/arm/mach-omap2/cm-regbits-34xx.h
+++ b/arch/arm/mach-omap2/cm-regbits-34xx.h
@@ -55,7 +55,7 @@
 /* Bits specific to each register */
 
 /* CM_FCLKEN_IVA2 */
-#define OMAP3430_CM_FCLKEN_IVA2_EN_IVA2			(1 << 0)
+#define OMAP3430_CM_FCLKEN_IVA2_EN_IVA2_MASK		(1 << 0)
 #define OMAP3430_CM_FCLKEN_IVA2_EN_IVA2_SHIFT		0
 
 /* CM_CLKEN_PLL_IVA2 */
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 5087b15..62e27aa 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -688,7 +688,7 @@ static void __init omap3_iva_idle(void)
 			  OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL);
 
 	/* Enable IVA2 clock */
-	cm_write_mod_reg(OMAP3430_CM_FCLKEN_IVA2_EN_IVA2,
+	cm_write_mod_reg(OMAP3430_CM_FCLKEN_IVA2_EN_IVA2_MASK,
 			 OMAP3430_IVA2_MOD, CM_FCLKEN);
 
 	/* Set IVA2 boot mode to 'idle' */

[PATCH 04/19] OMAP3: Clock: Added IDLEST definitions for SGX

[Paul Walmsley]

From: Tero Kristo <tero.kristo@nokia.com>

Added definitions for OMAP3430ES2_ST_SGX_SHIFT and OMAP3430ES2_ST_SGX_MASK
as these were missing.

Signed-off-by: Tero Kristo <tero.kristo@nokia.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/cm-regbits-34xx.h |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/cm-regbits-34xx.h b/arch/arm/mach-omap2/cm-regbits-34xx.h
index a76e835..d18da47 100644
--- a/arch/arm/mach-omap2/cm-regbits-34xx.h
+++ b/arch/arm/mach-omap2/cm-regbits-34xx.h
@@ -379,6 +379,10 @@
 #define OMAP3430ES2_CM_FCLKEN_SGX_EN_SGX_SHIFT		1
 #define OMAP3430ES2_CM_FCLKEN_SGX_EN_SGX_MASK		(1 << 1)
 
+/* CM_IDLEST_SGX */
+#define OMAP3430ES2_ST_SGX_SHIFT			1
+#define OMAP3430ES2_ST_SGX_MASK				(1 << 1)
+
 /* CM_ICLKEN_SGX */
 #define OMAP3430ES2_CM_ICLKEN_SGX_EN_SGX_SHIFT		0
 #define OMAP3430ES2_CM_ICLKEN_SGX_EN_SGX_MASK		(1 << 0)

[PATCH 05/19] OMAP2/3 PM: Adding powerdomain APIs for reading the next logic and mem state

[Paul Walmsley]

From: Thara Gopinath <thara@ti.com>

This patch adds APIs pwrdm_read_logic_retst and
pwrdm_read_mem_retst for reading the next programmed
logic and memory state a powerdomain is to hit in event
of the next power domain state being retention.
These are needed for OSWR support.

Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/powerdomain.c             |   73 +++++++++++++++++++++++++
 arch/arm/plat-omap/include/plat/powerdomain.h |    2 +
 2 files changed, 75 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index dc03289..e9eeaa4 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -679,6 +679,29 @@ int pwrdm_read_prev_logic_pwrst(struct powerdomain *pwrdm)
 }
 
 /**
+ * pwrdm_read_logic_retst - get next powerdomain logic power state
+ * @pwrdm: struct powerdomain * to get next logic power state
+ *
+ * Return the powerdomain pwrdm's logic power state.  Returns -EINVAL
+ * if the powerdomain pointer is null or returns the next logic
+ * power state upon success.
+ */
+int pwrdm_read_logic_retst(struct powerdomain *pwrdm)
+{
+	if (!pwrdm)
+		return -EINVAL;
+
+	/*
+	 * The register bit names below may not correspond to the
+	 * actual names of the bits in each powerdomain's register,
+	 * but the type of value returned is the same for each
+	 * powerdomain.
+	 */
+	return prm_read_mod_bits_shift(pwrdm->prcm_offs, pwrstctrl_reg_offs,
+					OMAP3430_LOGICSTATEST);
+}
+
+/**
  * pwrdm_read_mem_pwrst - get current memory bank power state
  * @pwrdm: struct powerdomain * to get current memory bank power state
  * @bank: memory bank number (0-3)
@@ -785,6 +808,56 @@ int pwrdm_read_prev_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
 }
 
 /**
+ * pwrdm_read_mem_retst - get next memory bank power state
+ * @pwrdm: struct powerdomain * to get mext memory bank power state
+ * @bank: memory bank number (0-3)
+ *
+ * Return the powerdomain pwrdm's next memory power state for bank
+ * x.  Returns -EINVAL if the powerdomain pointer is null, -EEXIST if
+ * the target memory bank does not exist or is not controllable, or
+ * returns the next memory power state upon success.
+ */
+int pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank)
+{
+	u32 m;
+
+	if (!pwrdm)
+		return -EINVAL;
+
+	if (pwrdm->banks < (bank + 1))
+		return -EEXIST;
+
+	/*
+	 * The register bit names below may not correspond to the
+	 * actual names of the bits in each powerdomain's register,
+	 * but the type of value returned is the same for each
+	 * powerdomain.
+	 */
+	switch (bank) {
+	case 0:
+		m = OMAP_MEM0_RETSTATE_MASK;
+		break;
+	case 1:
+		m = OMAP_MEM1_RETSTATE_MASK;
+		break;
+	case 2:
+		m = OMAP_MEM2_RETSTATE_MASK;
+		break;
+	case 3:
+		m = OMAP_MEM3_RETSTATE_MASK;
+		break;
+	case 4:
+		m = OMAP_MEM4_RETSTATE_MASK;
+	default:
+		WARN_ON(1); /* should never happen */
+		return -EEXIST;
+	}
+
+	return prm_read_mod_bits_shift(pwrdm->prcm_offs,
+					pwrstctrl_reg_offs, m);
+}
+
+/**
  * pwrdm_clear_all_prev_pwrst - clear previous powerstate register for a pwrdm
  * @pwrdm: struct powerdomain * to clear
  *
diff --git a/arch/arm/plat-omap/include/plat/powerdomain.h b/arch/arm/plat-omap/include/plat/powerdomain.h
index e15c7e9..6657ff2 100644
--- a/arch/arm/plat-omap/include/plat/powerdomain.h
+++ b/arch/arm/plat-omap/include/plat/powerdomain.h
@@ -137,8 +137,10 @@ int pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank, u8 pwrst);
 
 int pwrdm_read_logic_pwrst(struct powerdomain *pwrdm);
 int pwrdm_read_prev_logic_pwrst(struct powerdomain *pwrdm);
+int pwrdm_read_logic_retst(struct powerdomain *pwrdm);
 int pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank);
 int pwrdm_read_prev_mem_pwrst(struct powerdomain *pwrdm, u8 bank);
+int pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank);
 
 int pwrdm_enable_hdwr_sar(struct powerdomain *pwrdm);
 int pwrdm_disable_hdwr_sar(struct powerdomain *pwrdm);

[PATCH 06/19] OMAP3 PM: Defining .pwrsts_logic_ret field for core power domain structure

[Paul Walmsley]

From: Thara Gopinath <thara@ti.com>

This patch adds the flag .pwrsts_logic_ret info for the core power domain
in the associated powerdomain structure. This flag specifies the states
core domain logic can hit in event of the domain entering retention.

Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/powerdomains34xx.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/powerdomains34xx.h b/arch/arm/mach-omap2/powerdomains34xx.h
index 186c013..bd87112 100644
--- a/arch/arm/mach-omap2/powerdomains34xx.h
+++ b/arch/arm/mach-omap2/powerdomains34xx.h
@@ -82,6 +82,7 @@ static struct powerdomain core_3xxx_pre_es3_1_pwrdm = {
 					   CHIP_IS_OMAP3430ES2 |
 					   CHIP_IS_OMAP3430ES3_0),
 	.pwrsts		  = PWRSTS_OFF_RET_ON,
+	.pwrsts_logic_ret = PWRSTS_OFF_RET,
 	.banks		  = 2,
 	.pwrsts_mem_ret	  = {
 		[0] = PWRSTS_OFF_RET,	 /* MEM1RETSTATE */
@@ -98,6 +99,7 @@ static struct powerdomain core_3xxx_es3_1_pwrdm = {
 	.prcm_offs	  = CORE_MOD,
 	.omap_chip	  = OMAP_CHIP_INIT(CHIP_GE_OMAP3430ES3_1),
 	.pwrsts		  = PWRSTS_OFF_RET_ON,
+	.pwrsts_logic_ret = PWRSTS_OFF_RET,
 	.flags		  = PWRDM_HAS_HDWR_SAR, /* for USBTLL only */
 	.banks		  = 2,
 	.pwrsts_mem_ret	  = {

[PATCH 07/19] OMAP3 PM: Adding counters for power domain logic off and mem off during retention.

[Paul Walmsley]

From: Thara Gopinath <thara@ti.com>

This patch adds counters to keep track of whether the powerdomain
logic or software controllable memory banks are turned off when
the power domain enters retention. During power domain retention
if logic gets turned off, the scenario is known as Open Switch Retention.
Also during retention s/w controllable memory banks of a power
domain can be chosen to be kept in retention or off.

This patch adds one counter per powerdomain to track the power domain
logic state during retention. Number of memory bank state counters
added depends on the number of software controllable memory banks
of the powerdomain. To view these counters do
	cat ../debug/pm_debug/count

Signed-off-by: Thara Gopinath <thara@ti.com>
[paul at pwsan.com: conditional expressions simplified; counter increment
 code moved to its own function]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/pm-debug.c                |    5 +++++
 arch/arm/mach-omap2/powerdomain.c             |   25 +++++++++++++++++++++++++
 arch/arm/plat-omap/include/plat/powerdomain.h |    2 ++
 3 files changed, 32 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/pm-debug.c b/arch/arm/mach-omap2/pm-debug.c
index 0ce356f..c18f7f2 100644
--- a/arch/arm/mach-omap2/pm-debug.c
+++ b/arch/arm/mach-omap2/pm-debug.c
@@ -385,6 +385,11 @@ static int pwrdm_dbg_show_counter(struct powerdomain *pwrdm, void *user)
 		seq_printf(s, ",%s:%d", pwrdm_state_names[i],
 			pwrdm->state_counter[i]);
 
+	seq_printf(s, ",RET-LOGIC-OFF:%d", pwrdm->ret_logic_off_counter);
+	for (i = 0; i < pwrdm->banks; i++)
+		seq_printf(s, ",RET-MEMBANK%d-OFF:%d", i + 1,
+				pwrdm->ret_mem_off_counter[i]);
+
 	seq_printf(s, "\n");
 
 	return 0;
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index e9eeaa4..9a0fb38 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -125,6 +125,10 @@ static int _pwrdm_register(struct powerdomain *pwrdm)
 	for (i = 0; i < PWRDM_MAX_PWRSTS; i++)
 		pwrdm->state_counter[i] = 0;
 
+	pwrdm->ret_logic_off_counter = 0;
+	for (i = 0; i < pwrdm->banks; i++)
+		pwrdm->ret_mem_off_counter[i] = 0;
+
 	pwrdm_wait_transition(pwrdm);
 	pwrdm->state = pwrdm_read_pwrst(pwrdm);
 	pwrdm->state_counter[pwrdm->state] = 1;
@@ -134,6 +138,25 @@ static int _pwrdm_register(struct powerdomain *pwrdm)
 	return 0;
 }
 
+static void _update_logic_membank_counters(struct powerdomain *pwrdm)
+{
+	int i;
+	u8 prev_logic_pwrst, prev_mem_pwrst;
+
+	prev_logic_pwrst = pwrdm_read_prev_logic_pwrst(pwrdm);
+	if ((pwrdm->pwrsts_logic_ret == PWRSTS_OFF_RET) &&
+	    (prev_logic_pwrst == PWRDM_POWER_OFF))
+		pwrdm->ret_logic_off_counter++;
+
+	for (i = 0; i < pwrdm->banks; i++) {
+		prev_mem_pwrst = pwrdm_read_prev_mem_pwrst(pwrdm, i);
+
+		if ((pwrdm->pwrsts_mem_ret[i] == PWRSTS_OFF_RET) &&
+		    (prev_mem_pwrst == PWRDM_POWER_OFF))
+			pwrdm->ret_mem_off_counter[i]++;
+	}
+}
+
 static int _pwrdm_state_switch(struct powerdomain *pwrdm, int flag)
 {
 
@@ -153,6 +176,8 @@ static int _pwrdm_state_switch(struct powerdomain *pwrdm, int flag)
 		prev = pwrdm_read_prev_pwrst(pwrdm);
 		if (pwrdm->state != prev)
 			pwrdm->state_counter[prev]++;
+		if (prev == PWRDM_POWER_RET)
+			_update_logic_membank_counters(pwrdm);
 		break;
 	default:
 		return -EINVAL;
diff --git a/arch/arm/plat-omap/include/plat/powerdomain.h b/arch/arm/plat-omap/include/plat/powerdomain.h
index 6657ff2..d82b2c0 100644
--- a/arch/arm/plat-omap/include/plat/powerdomain.h
+++ b/arch/arm/plat-omap/include/plat/powerdomain.h
@@ -100,6 +100,8 @@ struct powerdomain {
 	struct list_head node;
 	int state;
 	unsigned state_counter[PWRDM_MAX_PWRSTS];
+	unsigned ret_logic_off_counter;
+	unsigned ret_mem_off_counter[PWRDM_MAX_MEM_BANKS];
 
 #ifdef CONFIG_PM_DEBUG
 	s64 timer;

[PATCH 08/19] OMAP2/3 clock: Extend find_idlest() to pass back idle state value

[Paul Walmsley]

From: Ranjith Lohithakshan <ranjithl@ti.com>

Current implementation defines clock idle state indicators based on the
cpu information (cpu_is_omap24xx() or cpu_is_omap34xx()) in a system wide
manner. This patch extends the find_idlest() function in clkops to pass
back the idle state indicator for that clock, thus allowing idle state
indicators to be defined on a per clock basis if required.

This is specifically needed on AM35xx devices as the new IPSS clocks
indicates the idle status (0 is idle, 1 is ready) in a way just
opposite to how its handled in OMAP3 (0 is ready, 1 is idle).

Signed-off-by: Ranjith Lohithakshan <ranjithl@ti.com>
[paul at pwsan.com: updated to apply after commit 98c45457 et seq.]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/clkt2xxx_apll.c     |    2 +-
 arch/arm/mach-omap2/clock.c             |   25 ++++++++++++++++++++-----
 arch/arm/mach-omap2/clock.h             |    2 +-
 arch/arm/mach-omap2/clock2xxx.c         |    5 ++++-
 arch/arm/mach-omap2/clock34xx.c         |   15 ++++++++++++---
 arch/arm/mach-omap2/cm.h                |    3 +++
 arch/arm/mach-omap2/prcm.c              |   14 +++++---------
 arch/arm/plat-omap/include/plat/clock.h |    6 ++++--
 arch/arm/plat-omap/include/plat/prcm.h  |    3 ++-
 9 files changed, 52 insertions(+), 23 deletions(-)

diff --git a/arch/arm/mach-omap2/clkt2xxx_apll.c b/arch/arm/mach-omap2/clkt2xxx_apll.c
index fc32ff8..d5b8b2b 100644
--- a/arch/arm/mach-omap2/clkt2xxx_apll.c
+++ b/arch/arm/mach-omap2/clkt2xxx_apll.c
@@ -57,7 +57,7 @@ static int omap2_clk_apll_enable(struct clk *clk, u32 status_mask)
 	cm_write_mod_reg(cval, PLL_MOD, CM_CLKEN);
 
 	omap2_cm_wait_idlest(OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST), status_mask,
-			     clk->name);
+			     OMAP24XX_CM_IDLEST_VAL, clk->name);
 
 	/*
 	 * REVISIT: Should we return an error code if omap2_wait_clock_ready()
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index 999b91e..3bb3292 100644
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -57,7 +57,7 @@ u8 cpu_mask;
 static void _omap2_module_wait_ready(struct clk *clk)
 {
 	void __iomem *companion_reg, *idlest_reg;
-	u8 other_bit, idlest_bit;
+	u8 other_bit, idlest_bit, idlest_val;
 
 	/* Not all modules have multiple clocks that their IDLEST depends on */
 	if (clk->ops->find_companion) {
@@ -66,9 +66,10 @@ static void _omap2_module_wait_ready(struct clk *clk)
 			return;
 	}
 
-	clk->ops->find_idlest(clk, &idlest_reg, &idlest_bit);
+	clk->ops->find_idlest(clk, &idlest_reg, &idlest_bit, &idlest_val);
 
-	omap2_cm_wait_idlest(idlest_reg, (1 << idlest_bit), clk->name);
+	omap2_cm_wait_idlest(idlest_reg, (1 << idlest_bit), idlest_val,
+			     clk->name);
 }
 
 /* Enables clock without considering parent dependencies or use count
@@ -175,7 +176,8 @@ void omap2_clk_dflt_find_companion(struct clk *clk, void __iomem **other_reg,
  * omap2_clk_dflt_find_idlest - find CM_IDLEST reg va, bit shift for @clk
  * @clk: struct clk * to find IDLEST info for
  * @idlest_reg: void __iomem ** to return the CM_IDLEST va in
- * @idlest_bit: u8 ** to return the CM_IDLEST bit shift in
+ * @idlest_bit: u8 * to return the CM_IDLEST bit shift in
+ * @idlest_val: u8 * to return the idle status indicator
  *
  * Return the CM_IDLEST register address and bit shift corresponding
  * to the module that "owns" this clock.  This default code assumes
@@ -185,13 +187,26 @@ void omap2_clk_dflt_find_companion(struct clk *clk, void __iomem **other_reg,
  * CM_IDLEST2).  This is not true for all modules.  No return value.
  */
 void omap2_clk_dflt_find_idlest(struct clk *clk, void __iomem **idlest_reg,
-				u8 *idlest_bit)
+				u8 *idlest_bit, u8 *idlest_val)
 {
 	u32 r;
 
 	r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
 	*idlest_reg = (__force void __iomem *)r;
 	*idlest_bit = clk->enable_bit;
+
+	/*
+	 * 24xx uses 0 to indicate not ready, and 1 to indicate ready.
+	 * 34xx reverses this, just to keep us on our toes
+	 * AM35xx uses both, depending on the module.
+	 */
+	if (cpu_is_omap24xx())
+		*idlest_val = OMAP24XX_CM_IDLEST_VAL;
+	else if (cpu_is_omap34xx())
+		*idlest_val = OMAP34XX_CM_IDLEST_VAL;
+	else
+		BUG();
+
 }
 
 int omap2_dflt_clk_enable(struct clk *clk)
diff --git a/arch/arm/mach-omap2/clock.h b/arch/arm/mach-omap2/clock.h
index 7bc344b..c500a5f 100644
--- a/arch/arm/mach-omap2/clock.h
+++ b/arch/arm/mach-omap2/clock.h
@@ -88,7 +88,7 @@ void omap2_dflt_clk_disable(struct clk *clk);
 void omap2_clk_dflt_find_companion(struct clk *clk, void __iomem **other_reg,
 				   u8 *other_bit);
 void omap2_clk_dflt_find_idlest(struct clk *clk, void __iomem **idlest_reg,
-				u8 *idlest_bit);
+				u8 *idlest_bit, u8 *idlest_val);
 void omap2xxx_clk_commit(struct clk *clk);
 
 extern u8 cpu_mask;
diff --git a/arch/arm/mach-omap2/clock2xxx.c b/arch/arm/mach-omap2/clock2xxx.c
index a48b01a..94fb8a6 100644
--- a/arch/arm/mach-omap2/clock2xxx.c
+++ b/arch/arm/mach-omap2/clock2xxx.c
@@ -42,6 +42,7 @@ struct clk *vclk, *sclk, *dclk;
  * @clk: struct clk * being enabled
  * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
  * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
+ * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
  *
  * OMAP2430 I2CHS CM_IDLEST bits are in CM_IDLEST1_CORE, but the
  * CM_*CLKEN bits are in CM_{I,F}CLKEN2_CORE.  This custom function
@@ -50,10 +51,12 @@ struct clk *vclk, *sclk, *dclk;
  */
 static void omap2430_clk_i2chs_find_idlest(struct clk *clk,
 					   void __iomem **idlest_reg,
-					   u8 *idlest_bit)
+					   u8 *idlest_bit,
+					   u8 *idlest_val)
 {
 	*idlest_reg = OMAP_CM_REGADDR(CORE_MOD, CM_IDLEST);
 	*idlest_bit = clk->enable_bit;
+	*idlest_val = OMAP24XX_CM_IDLEST_VAL;
 }
 
 #else
diff --git a/arch/arm/mach-omap2/clock34xx.c b/arch/arm/mach-omap2/clock34xx.c
index 1f1b5a6..d339d2b 100644
--- a/arch/arm/mach-omap2/clock34xx.c
+++ b/arch/arm/mach-omap2/clock34xx.c
@@ -47,6 +47,7 @@ struct clk *sdrc_ick_p, *arm_fck_p;
  * @clk: struct clk * being enabled
  * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
  * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
+ * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
  *
  * The OMAP3430ES2 SSI target CM_IDLEST bit is at a different shift
  * from the CM_{I,F}CLKEN bit.  Pass back the correct info via
@@ -54,13 +55,15 @@ struct clk *sdrc_ick_p, *arm_fck_p;
  */
 static void omap3430es2_clk_ssi_find_idlest(struct clk *clk,
 					    void __iomem **idlest_reg,
-					    u8 *idlest_bit)
+					    u8 *idlest_bit,
+					    u8 *idlest_val)
 {
 	u32 r;
 
 	r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
 	*idlest_reg = (__force void __iomem *)r;
 	*idlest_bit = OMAP3430ES2_ST_SSI_IDLE_SHIFT;
+	*idlest_val = OMAP34XX_CM_IDLEST_VAL;
 }
 
 const struct clkops clkops_omap3430es2_ssi_wait = {
@@ -75,6 +78,7 @@ const struct clkops clkops_omap3430es2_ssi_wait = {
  * @clk: struct clk * being enabled
  * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
  * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
+ * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
  *
  * Some OMAP modules on OMAP3 ES2+ chips have both initiator and
  * target IDLEST bits.  For our purposes, we are concerned with the
@@ -85,7 +89,8 @@ const struct clkops clkops_omap3430es2_ssi_wait = {
  */
 static void omap3430es2_clk_dss_usbhost_find_idlest(struct clk *clk,
 						    void __iomem **idlest_reg,
-						    u8 *idlest_bit)
+						    u8 *idlest_bit,
+						    u8 *idlest_val)
 {
 	u32 r;
 
@@ -93,6 +98,7 @@ static void omap3430es2_clk_dss_usbhost_find_idlest(struct clk *clk,
 	*idlest_reg = (__force void __iomem *)r;
 	/* USBHOST_IDLE has same shift */
 	*idlest_bit = OMAP3430ES2_ST_DSS_IDLE_SHIFT;
+	*idlest_val = OMAP34XX_CM_IDLEST_VAL;
 }
 
 const struct clkops clkops_omap3430es2_dss_usbhost_wait = {
@@ -107,6 +113,7 @@ const struct clkops clkops_omap3430es2_dss_usbhost_wait = {
  * @clk: struct clk * being enabled
  * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
  * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
+ * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
  *
  * The OMAP3430ES2 HSOTGUSB target CM_IDLEST bit is at a different
  * shift from the CM_{I,F}CLKEN bit.  Pass back the correct info via
@@ -114,13 +121,15 @@ const struct clkops clkops_omap3430es2_dss_usbhost_wait = {
  */
 static void omap3430es2_clk_hsotgusb_find_idlest(struct clk *clk,
 						 void __iomem **idlest_reg,
-						 u8 *idlest_bit)
+						 u8 *idlest_bit,
+						 u8 *idlest_val)
 {
 	u32 r;
 
 	r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
 	*idlest_reg = (__force void __iomem *)r;
 	*idlest_bit = OMAP3430ES2_ST_HSOTGUSB_IDLE_SHIFT;
+	*idlest_val = OMAP34XX_CM_IDLEST_VAL;
 }
 
 const struct clkops clkops_omap3430es2_hsotgusb_wait = {
diff --git a/arch/arm/mach-omap2/cm.h b/arch/arm/mach-omap2/cm.h
index 4e4ac8c..94728b1 100644
--- a/arch/arm/mach-omap2/cm.h
+++ b/arch/arm/mach-omap2/cm.h
@@ -139,5 +139,8 @@ static inline u32 cm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx)
 /* CM_IDLEST_GFX */
 #define OMAP_ST_GFX					(1 << 0)
 
+/* CM_IDLEST indicator */
+#define OMAP24XX_CM_IDLEST_VAL		0
+#define OMAP34XX_CM_IDLEST_VAL		1
 
 #endif
diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c
index e8e121a..0f87fdc 100644
--- a/arch/arm/mach-omap2/prcm.c
+++ b/arch/arm/mach-omap2/prcm.c
@@ -242,26 +242,22 @@ u32 cm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx)
  * omap2_cm_wait_idlest - wait for IDLEST bit to indicate module readiness
  * @reg: physical address of module IDLEST register
  * @mask: value to mask against to determine if the module is active
+ * @idlest: idle state indicator (0 or 1) for the clock
  * @name: name of the clock (for printk)
  *
  * Returns 1 if the module indicated readiness in time, or 0 if it
  * failed to enable in roughly MAX_MODULE_ENABLE_WAIT microseconds.
  */
-int omap2_cm_wait_idlest(void __iomem *reg, u32 mask, const char *name)
+int omap2_cm_wait_idlest(void __iomem *reg, u32 mask, u8 idlest,
+				const char *name)
 {
 	int i = 0;
 	int ena = 0;
 
-	/*
-	 * 24xx uses 0 to indicate not ready, and 1 to indicate ready.
-	 * 34xx reverses this, just to keep us on our toes
-	 */
-	if (cpu_is_omap24xx())
-		ena = mask;
-	else if (cpu_is_omap34xx())
+	if (idlest)
 		ena = 0;
 	else
-		BUG();
+		ena = mask;
 
 	/* Wait for lock */
 	omap_test_timeout(((__raw_readl(reg) & mask) == ena),
diff --git a/arch/arm/plat-omap/include/plat/clock.h b/arch/arm/plat-omap/include/plat/clock.h
index e413132..9042dab 100644
--- a/arch/arm/plat-omap/include/plat/clock.h
+++ b/arch/arm/plat-omap/include/plat/clock.h
@@ -22,8 +22,10 @@ struct clockdomain;
 struct clkops {
 	int			(*enable)(struct clk *);
 	void			(*disable)(struct clk *);
-	void			(*find_idlest)(struct clk *, void __iomem **, u8 *);
-	void			(*find_companion)(struct clk *, void __iomem **, u8 *);
+	void			(*find_idlest)(struct clk *, void __iomem **,
+					       u8 *, u8 *);
+	void			(*find_companion)(struct clk *, void __iomem **,
+						  u8 *);
 };
 
 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
diff --git a/arch/arm/plat-omap/include/plat/prcm.h b/arch/arm/plat-omap/include/plat/prcm.h
index 66938a9..d6a0e27 100644
--- a/arch/arm/plat-omap/include/plat/prcm.h
+++ b/arch/arm/plat-omap/include/plat/prcm.h
@@ -25,7 +25,8 @@
 
 u32 omap_prcm_get_reset_sources(void);
 void omap_prcm_arch_reset(char mode);
-int omap2_cm_wait_idlest(void __iomem *reg, u32 mask, const char *name);
+int omap2_cm_wait_idlest(void __iomem *reg, u32 mask, u8 idlest,
+			 const char *name);
 
 #define START_PADCONF_SAVE 0x2
 #define PADCONF_SAVE_DONE  0x1

[PATCH 09/19] AM35xx: Add clock support for new modules on AM35xx

[Paul Walmsley]

From: Ranjith Lohithakshan <ranjithl@ti.com>

This patch adds clock support for the following AM35xx modules
	- Ethernet MAC
	- CAN Controller (HECC)
	- New MUSB OTG Controller with integrated Phy
	- Video Processing Front End (VPFE)
	- Additional UART (UART4)

Signed-off-by: Ranjith Lohithakshan <ranjithl@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/clock34xx.c       |   93 ++++++++++++++++++++++++++
 arch/arm/mach-omap2/clock34xx.h       |    4 +
 arch/arm/mach-omap2/clock34xx_data.c  |  118 +++++++++++++++++++++++++++++++++
 arch/arm/mach-omap2/cm-regbits-34xx.h |   10 +++
 4 files changed, 225 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/clock34xx.c b/arch/arm/mach-omap2/clock34xx.c
index d339d2b..6180a03 100644
--- a/arch/arm/mach-omap2/clock34xx.c
+++ b/arch/arm/mach-omap2/clock34xx.c
@@ -39,6 +39,16 @@
  */
 #define DPLL5_FREQ_FOR_USBHOST		120000000
 
+/*
+ * In AM35xx IPSS, the {ICK,FCK} enable bits for modules are exported
+ * in the same register at a bit offset of 0x8. The EN_ACK for ICK is
+ * at an offset of 4 from ICK enable bit.
+ */
+#define AM35XX_IPSS_ICK_MASK			0xF
+#define AM35XX_IPSS_ICK_EN_ACK_OFFSET 	0x4
+#define AM35XX_IPSS_ICK_FCK_OFFSET		0x8
+#define AM35XX_IPSS_CLK_IDLEST_VAL		0
+
 /* needed by omap3_core_dpll_m2_set_rate() */
 struct clk *sdrc_ick_p, *arm_fck_p;
 
@@ -144,6 +154,89 @@ const struct clkops clkops_noncore_dpll_ops = {
 	.disable	= omap3_noncore_dpll_disable,
 };
 
+/**
+ * am35xx_clk_find_idlest - return clock ACK info for AM35XX IPSS
+ * @clk: struct clk * being enabled
+ * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
+ * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
+ * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
+ *
+ * The interface clocks on AM35xx IPSS reflects the clock idle status
+ * in the enable register itsel at a bit offset of 4 from the enable
+ * bit. A value of 1 indicates that clock is enabled.
+ */
+static void am35xx_clk_find_idlest(struct clk *clk,
+					    void __iomem **idlest_reg,
+					    u8 *idlest_bit,
+					    u8 *idlest_val)
+{
+	*idlest_reg = (__force void __iomem *)(clk->enable_reg);
+	*idlest_bit = clk->enable_bit + AM35XX_IPSS_ICK_EN_ACK_OFFSET;
+	*idlest_val = AM35XX_IPSS_CLK_IDLEST_VAL;
+}
+
+/**
+ * am35xx_clk_find_companion - find companion clock to @clk
+ * @clk: struct clk * to find the companion clock of
+ * @other_reg: void __iomem ** to return the companion clock CM_*CLKEN va in
+ * @other_bit: u8 ** to return the companion clock bit shift in
+ *
+ * Some clocks don't have companion clocks.  For example, modules with
+ * only an interface clock (such as HECC) don't have a companion
+ * clock.  Right now, this code relies on the hardware exporting a bit
+ * in the correct companion register that indicates that the
+ * nonexistent 'companion clock' is active.  Future patches will
+ * associate this type of code with per-module data structures to
+ * avoid this issue, and remove the casts.  No return value.
+ */
+static void am35xx_clk_find_companion(struct clk *clk, void __iomem **other_reg,
+					    u8 *other_bit)
+{
+	*other_reg = (__force void __iomem *)(clk->enable_reg);
+	if (clk->enable_bit & AM35XX_IPSS_ICK_MASK)
+		*other_bit = clk->enable_bit + AM35XX_IPSS_ICK_FCK_OFFSET;
+	else
+		*other_bit = clk->enable_bit - AM35XX_IPSS_ICK_FCK_OFFSET;
+}
+
+const struct clkops clkops_am35xx_ipss_module_wait = {
+	.enable		= omap2_dflt_clk_enable,
+	.disable	= omap2_dflt_clk_disable,
+	.find_idlest	= am35xx_clk_find_idlest,
+	.find_companion	= am35xx_clk_find_companion,
+};
+
+/**
+ * am35xx_clk_ipss_find_idlest - return CM_IDLEST info for IPSS
+ * @clk: struct clk * being enabled
+ * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
+ * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
+ * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
+ *
+ * The IPSS target CM_IDLEST bit is at a different shift from the
+ * CM_{I,F}CLKEN bit.  Pass back the correct info via @idlest_reg
+ * and @idlest_bit.  No return value.
+ */
+static void am35xx_clk_ipss_find_idlest(struct clk *clk,
+					    void __iomem **idlest_reg,
+					    u8 *idlest_bit,
+					    u8 *idlest_val)
+{
+	u32 r;
+
+	r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
+	*idlest_reg = (__force void __iomem *)r;
+	*idlest_bit = AM35XX_ST_IPSS_SHIFT;
+	*idlest_val = OMAP34XX_CM_IDLEST_VAL;
+}
+
+const struct clkops clkops_am35xx_ipss_wait = {
+	.enable		= omap2_dflt_clk_enable,
+	.disable	= omap2_dflt_clk_disable,
+	.find_idlest	= am35xx_clk_ipss_find_idlest,
+	.find_companion	= omap2_clk_dflt_find_companion,
+};
+
 int omap3_dpll4_set_rate(struct clk *clk, unsigned long rate)
 {
 	/*
diff --git a/arch/arm/mach-omap2/clock34xx.h b/arch/arm/mach-omap2/clock34xx.h
index 73f2109..e61e653 100644
--- a/arch/arm/mach-omap2/clock34xx.h
+++ b/arch/arm/mach-omap2/clock34xx.h
@@ -22,4 +22,8 @@ extern const struct clkops clkops_omap3430es2_hsotgusb_wait;
 extern const struct clkops clkops_omap3430es2_dss_usbhost_wait;
 extern const struct clkops clkops_noncore_dpll_ops;
 
+/* AM35xx-specific clkops */
+extern const struct clkops clkops_am35xx_ipss_module_wait;
+extern const struct clkops clkops_am35xx_ipss_wait;
+
 #endif
diff --git a/arch/arm/mach-omap2/clock34xx_data.c b/arch/arm/mach-omap2/clock34xx_data.c
index 0d04f92..d9d5b2e 100644
--- a/arch/arm/mach-omap2/clock34xx_data.c
+++ b/arch/arm/mach-omap2/clock34xx_data.c
@@ -2983,6 +2983,113 @@ static struct clk wdt1_fck = {
 	.recalc		= &followparent_recalc,
 };
 
+/* Clocks for AM35XX */
+static struct clk ipss_ick = {
+	.name		= "ipss_ick",
+	.ops		= &clkops_am35xx_ipss_wait,
+	.parent		= &core_l3_ick,
+	.clkdm_name	= "core_l3_clkdm",
+	.enable_reg	= OMAP_CM_REGADDR(CORE_MOD, CM_ICLKEN1),
+	.enable_bit	= AM35XX_EN_IPSS_SHIFT,
+	.recalc		= &followparent_recalc,
+};
+
+static struct clk emac_ick = {
+	.name		= "emac_ick",
+	.ops		= &clkops_am35xx_ipss_module_wait,
+	.parent		= &ipss_ick,
+	.clkdm_name	= "core_l3_clkdm",
+	.enable_reg	= OMAP343X_CTRL_REGADDR(AM35XX_CONTROL_IPSS_CLK_CTRL),
+	.enable_bit	= AM35XX_CPGMAC_VBUSP_CLK_SHIFT,
+	.recalc		= &followparent_recalc,
+};
+
+static struct clk rmii_ck = {
+	.name		= "rmii_ck",
+	.ops		= &clkops_null,
+	.flags		= RATE_FIXED,
+	.rate		= 50000000,
+};
+
+static struct clk emac_fck = {
+	.name		= "emac_fck",
+	.ops		= &clkops_omap2_dflt,
+	.parent		= &rmii_ck,
+	.enable_reg	= OMAP343X_CTRL_REGADDR(AM35XX_CONTROL_IPSS_CLK_CTRL),
+	.enable_bit	= AM35XX_CPGMAC_FCLK_SHIFT,
+	.recalc		= &followparent_recalc,
+};
+
+static struct clk hsotgusb_ick_am35xx = {
+	.name		= "hsotgusb_ick",
+	.ops		= &clkops_am35xx_ipss_module_wait,
+	.parent		= &ipss_ick,
+	.clkdm_name	= "core_l3_clkdm",
+	.enable_reg	= OMAP343X_CTRL_REGADDR(AM35XX_CONTROL_IPSS_CLK_CTRL),
+	.enable_bit	= AM35XX_USBOTG_VBUSP_CLK_SHIFT,
+	.recalc		= &followparent_recalc,
+};
+
+static struct clk hsotgusb_fck_am35xx = {
+	.name		= "hsotgusb_fck",
+	.ops		= &clkops_omap2_dflt,
+	.parent		= &sys_ck,
+	.clkdm_name	= "core_l3_clkdm",
+	.enable_reg	= OMAP343X_CTRL_REGADDR(AM35XX_CONTROL_IPSS_CLK_CTRL),
+	.enable_bit	= AM35XX_USBOTG_FCLK_SHIFT,
+	.recalc		= &followparent_recalc,
+};
+
+static struct clk hecc_ck = {
+	.name		= "hecc_ck",
+	.ops		= &clkops_am35xx_ipss_module_wait,
+	.parent		= &sys_ck,
+	.clkdm_name	= "core_l3_clkdm",
+	.enable_reg	= OMAP343X_CTRL_REGADDR(AM35XX_CONTROL_IPSS_CLK_CTRL),
+	.enable_bit	= AM35XX_HECC_VBUSP_CLK_SHIFT,
+	.recalc		= &followparent_recalc,
+};
+
+static struct clk vpfe_ick = {
+	.name		= "vpfe_ick",
+	.ops		= &clkops_am35xx_ipss_module_wait,
+	.parent		= &ipss_ick,
+	.clkdm_name	= "core_l3_clkdm",
+	.enable_reg	= OMAP343X_CTRL_REGADDR(AM35XX_CONTROL_IPSS_CLK_CTRL),
+	.enable_bit	= AM35XX_VPFE_VBUSP_CLK_SHIFT,
+	.recalc		= &followparent_recalc,
+};
+
+static struct clk pclk_ck = {
+	.name		= "pclk_ck",
+	.ops		= &clkops_null,
+	.flags		= RATE_FIXED,
+	.rate		= 27000000,
+};
+
+static struct clk vpfe_fck = {
+	.name		= "vpfe_fck",
+	.ops		= &clkops_omap2_dflt,
+	.parent		= &pclk_ck,
+	.enable_reg	= OMAP343X_CTRL_REGADDR(AM35XX_CONTROL_IPSS_CLK_CTRL),
+	.enable_bit	= AM35XX_VPFE_FCLK_SHIFT,
+	.recalc		= &followparent_recalc,
+};
+
+/*
+ * The UART1/2 functional clock acts as the functional
+ * clock for UART4. No separate fclk control available.
+ */
+static struct clk uart4_ick_am35xx = {
+	.name		= "uart4_ick",
+	.ops		= &clkops_omap2_dflt_wait,
+	.parent		= &core_l4_ick,
+	.enable_reg	= OMAP_CM_REGADDR(CORE_MOD, CM_ICLKEN1),
+	.enable_bit	= AM35XX_EN_UART4_SHIFT,
+	.clkdm_name	= "core_l4_clkdm",
+	.recalc		= &followparent_recalc,
+};
+
 
 /*
  * clkdev
@@ -3209,6 +3316,17 @@ static struct omap_clk omap3xxx_clks[] = {
 	CLK(NULL,	"secure_32k_fck", &secure_32k_fck, CK_3XXX),
 	CLK(NULL,	"gpt12_fck",	&gpt12_fck,	CK_3XXX),
 	CLK(NULL,	"wdt1_fck",	&wdt1_fck,	CK_3XXX),
+	CLK(NULL,	"ipss_ick",	&ipss_ick,	CK_AM35XX),
+	CLK(NULL,	"rmii_ck",	&rmii_ck,	CK_AM35XX),
+	CLK(NULL,	"pclk_ck",	&pclk_ck,	CK_AM35XX),
+	CLK("davinci_emac",	"ick",		&emac_ick,	CK_AM35XX),
+	CLK("davinci_emac",	"fck",		&emac_fck,	CK_AM35XX),
+	CLK("vpfe-capture",	"master",	&vpfe_ick,	CK_AM35XX),
+	CLK("vpfe-capture",	"slave",	&vpfe_fck,	CK_AM35XX),
+	CLK("musb_hdrc",	"ick",		&hsotgusb_ick_am35xx,	CK_AM35XX),
+	CLK("musb_hdrc",	"fck",		&hsotgusb_fck_am35xx,	CK_AM35XX),
+	CLK(NULL,	"hecc_ck",	&hecc_ck,	CK_AM35XX),
+	CLK(NULL,	"uart4_ick",	&uart4_ick_am35xx,	CK_AM35XX),
 };
 
 
diff --git a/arch/arm/mach-omap2/cm-regbits-34xx.h b/arch/arm/mach-omap2/cm-regbits-34xx.h
index d18da47..c04c7c6 100644
--- a/arch/arm/mach-omap2/cm-regbits-34xx.h
+++ b/arch/arm/mach-omap2/cm-regbits-34xx.h
@@ -168,6 +168,12 @@
 #define OMAP3430_EN_SDRC				(1 << 1)
 #define OMAP3430_EN_SDRC_SHIFT				1
 
+/* AM35XX specific CM_ICLKEN1_CORE bits */
+#define AM35XX_EN_IPSS_MASK				(1 << 4)
+#define AM35XX_EN_IPSS_SHIFT				4
+#define AM35XX_EN_UART4_MASK			(1 << 23)
+#define AM35XX_EN_UART4_SHIFT				23
+
 /* CM_ICLKEN2_CORE */
 #define OMAP3430_EN_PKA					(1 << 4)
 #define OMAP3430_EN_PKA_SHIFT				4
@@ -220,6 +226,10 @@
 #define OMAP3430_ST_SSI_STDBY_SHIFT			0
 #define OMAP3430_ST_SSI_STDBY_MASK			(1 << 0)
 
+/* AM35xx specific CM_IDLEST1_CORE bits */
+#define AM35XX_ST_IPSS_SHIFT				5
+#define AM35XX_ST_IPSS_MASK 				(1 << 5)
+
 /* CM_IDLEST2_CORE */
 #define OMAP3430_ST_PKA_SHIFT				4
 #define OMAP3430_ST_PKA_MASK				(1 << 4)

[PATCH 10/19] OMAP3 clock: Check return values for clk_get()

[Paul Walmsley]

From: Sanjeev Premi <premi@ti.com>

This patch checks if clk_get() returned success for
the clocks used in function omap2_clk_arch_init().

This version incorporates review comments from
Kevin Hilman and Paul Walmsley.

Signed-off-by: Sanjeev Premi <premi@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/clock34xx.c |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/clock34xx.c b/arch/arm/mach-omap2/clock34xx.c
index 6180a03..37da629 100644
--- a/arch/arm/mach-omap2/clock34xx.c
+++ b/arch/arm/mach-omap2/clock34xx.c
@@ -21,6 +21,7 @@
 #include <linux/delay.h>
 #include <linux/clk.h>
 #include <linux/io.h>
+#include <linux/err.h>
 
 #include <plat/cpu.h>
 #include <plat/clock.h>
@@ -286,6 +287,7 @@ static int __init omap3xxx_clk_arch_init(void)
 {
 	struct clk *osc_sys_ck, *dpll1_ck, *arm_fck, *core_ck;
 	unsigned long osc_sys_rate;
+	bool err = 0;
 
 	if (!cpu_is_omap34xx())
 		return 0;
@@ -295,9 +297,23 @@ static int __init omap3xxx_clk_arch_init(void)
 
 	/* XXX test these for success */
 	dpll1_ck = clk_get(NULL, "dpll1_ck");
+	if (WARN(IS_ERR(dpll1_ck), "Failed to get dpll1_ck.\n"))
+		err = 1;
+
 	arm_fck = clk_get(NULL, "arm_fck");
+	if (WARN(IS_ERR(arm_fck), "Failed to get arm_fck.\n"))
+		err = 1;
+
 	core_ck = clk_get(NULL, "core_ck");
+	if (WARN(IS_ERR(core_ck), "Failed to get core_ck.\n"))
+		err = 1;
+
 	osc_sys_ck = clk_get(NULL, "osc_sys_ck");
+	if (WARN(IS_ERR(osc_sys_ck), "Failed to get osc_sys_ck.\n"))
+		err = 1;
+
+	if (err)
+		return -ENOENT;
 
 	/* REVISIT: not yet ready for 343x */
 	if (clk_set_rate(dpll1_ck, mpurate))

[PATCH 11/19] OMAP2/3: PRCM: fix misc. compiler warnings

[Paul Walmsley]

From: Kevin Hilman <khilman@deeprootsystems.com>

- missing return in omap_prcm_get_reset_sources()
- potential use of uninitialized variable in omap_prcm_arch_reset()

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/prcm.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c
index 0f87fdc..356a020 100644
--- a/arch/arm/mach-omap2/prcm.c
+++ b/arch/arm/mach-omap2/prcm.c
@@ -127,13 +127,15 @@ u32 omap_prcm_get_reset_sources(void)
 		return prm_read_mod_reg(WKUP_MOD, OMAP2_RM_RSTST) & 0x7f;
 	if (cpu_is_omap44xx())
 		return prm_read_mod_reg(WKUP_MOD, OMAP4_RM_RSTST) & 0x7f;
+
+	return 0;
 }
 EXPORT_SYMBOL(omap_prcm_get_reset_sources);
 
 /* Resets clock rates and reboots the system. Only called from system.h */
 void omap_prcm_arch_reset(char mode)
 {
-	s16 prcm_offs;
+	s16 prcm_offs = 0;
 
 	if (cpu_is_omap24xx()) {
 		omap2xxx_clk_prepare_for_reboot();

[PATCH 12/19] OMAP3 clock: Remove FreqSel for 3630

[Paul Walmsley]

From: Vishwanath BS <vishwanath.bs@ti.com>

DPLL_FREQSEL field in CLKEN_PLL register is no longer valid for
OMAP3630. So remove references to that.

Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/dpll3xxx.c |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/arch/arm/mach-omap2/dpll3xxx.c b/arch/arm/mach-omap2/dpll3xxx.c
index 2b559fc..84be81c 100644
--- a/arch/arm/mach-omap2/dpll3xxx.c
+++ b/arch/arm/mach-omap2/dpll3xxx.c
@@ -243,8 +243,11 @@ static int omap3_noncore_dpll_program(struct clk *clk, u16 m, u8 n, u16 freqsel)
 	/* 3430 ES2 TRM: 4.7.6.9 DPLL Programming Sequence */
 	_omap3_noncore_dpll_bypass(clk);
 
-	/* Set jitter correction */
-	if (!cpu_is_omap44xx()) {
+	/*
+	 * Set jitter correction. No jitter correction for OMAP4 and 3630
+	 * since freqsel is field is no longer present
+	 */
+	if (!cpu_is_omap44xx() && !cpu_is_omap3630()) {
 		v = __raw_readl(dd->control_reg);
 		v &= ~dd->freqsel_mask;
 		v |= freqsel << __ffs(dd->freqsel_mask);
@@ -387,8 +390,8 @@ int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate)
 		if (dd->last_rounded_rate == 0)
 			return -EINVAL;
 
-		/* No freqsel on OMAP4 */
-		if (!cpu_is_omap44xx()) {
+		/* No freqsel on OMAP4 and OMAP3630 */
+		if (!cpu_is_omap44xx() && !cpu_is_omap3630()) {
 			freqsel = _omap3_dpll_compute_freqsel(clk,
 						dd->last_rounded_n);
 			if (!freqsel)

[PATCH 12/19] OMAP3 clock: Remove FreqSel for 3630

[Sergei Shtylyov]

Hello.

Paul Walmsley wrote:

> From: Vishwanath BS <vishwanath.bs@ti.com>
>
> DPLL_FREQSEL field in CLKEN_PLL register is no longer valid for
> OMAP3630. So remove references to that.
>
> Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
> Signed-off-by: Paul Walmsley <paul@pwsan.com>
> ---
>  arch/arm/mach-omap2/dpll3xxx.c |   11 +++++++----
>  1 files changed, 7 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/dpll3xxx.c b/arch/arm/mach-omap2/dpll3xxx.c
> index 2b559fc..84be81c 100644
> --- a/arch/arm/mach-omap2/dpll3xxx.c
> +++ b/arch/arm/mach-omap2/dpll3xxx.c
> @@ -243,8 +243,11 @@ static int omap3_noncore_dpll_program(struct clk *clk, u16 m, u8 n, u16 freqsel)
>  	/* 3430 ES2 TRM: 4.7.6.9 DPLL Programming Sequence */
>  	_omap3_noncore_dpll_bypass(clk);
>  
> -	/* Set jitter correction */
> -	if (!cpu_is_omap44xx()) {
> +	/*
> +	 * Set jitter correction. No jitter correction for OMAP4 and 3630
> +	 * since freqsel is field is no longer present
>   

   I can't parse that comment. I guess first "is" is not needed. :-)

WBR, Sergei

[PATCH 12/19] OMAP3 clock: Remove FreqSel for 3630

[Paul Walmsley]

Hello Sergei,

On Tue, 16 Feb 2010, Sergei Shtylyov wrote:

> Paul Walmsley wrote:
> 
> > From: Vishwanath BS <vishwanath.bs@ti.com>
> > 
> > diff --git a/arch/arm/mach-omap2/dpll3xxx.c b/arch/arm/mach-omap2/dpll3xxx.c
> > index 2b559fc..84be81c 100644
> > --- a/arch/arm/mach-omap2/dpll3xxx.c
> > +++ b/arch/arm/mach-omap2/dpll3xxx.c
> > @@ -243,8 +243,11 @@ static int omap3_noncore_dpll_program(struct clk *clk,
> > u16 m, u8 n, u16 freqsel)
> >  	/* 3430 ES2 TRM: 4.7.6.9 DPLL Programming Sequence */
> >  	_omap3_noncore_dpll_bypass(clk);
> >  -	/* Set jitter correction */
> > -	if (!cpu_is_omap44xx()) {
> > +	/*
> > +	 * Set jitter correction. No jitter correction for OMAP4 and 3630
> > +	 * since freqsel is field is no longer present
> >   
> 
>   I can't parse that comment. I guess first "is" is not needed. :-)

Thanks Sergei; fixed in the for_2.6.34_dev branch; revised branch below.


- Paul

From: Vishwanath BS <vishwanath.bs@ti.com>
Date: Fri, 12 Feb 2010 14:25:04 -0700
Subject: [PATCH] OMAP3 clock: Remove FreqSel for 3630

DPLL_FREQSEL field in CLKEN_PLL register is no longer valid for
OMAP3630. So remove references to that.

Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
[paul at pwsan.com: added comment fix from Sergei Shtylyov]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/dpll3xxx.c |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/arch/arm/mach-omap2/dpll3xxx.c b/arch/arm/mach-omap2/dpll3xxx.c
index 2b559fc..68268cd 100644
--- a/arch/arm/mach-omap2/dpll3xxx.c
+++ b/arch/arm/mach-omap2/dpll3xxx.c
@@ -243,8 +243,11 @@ static int omap3_noncore_dpll_program(struct clk *clk, u16 m, u8 n, u16 freqsel)
 	/* 3430 ES2 TRM: 4.7.6.9 DPLL Programming Sequence */
 	_omap3_noncore_dpll_bypass(clk);
 
-	/* Set jitter correction */
-	if (!cpu_is_omap44xx()) {
+	/*
+	 * Set jitter correction. No jitter correction for OMAP4 and 3630
+	 * since freqsel field is no longer present
+	 */
+	if (!cpu_is_omap44xx() && !cpu_is_omap3630()) {
 		v = __raw_readl(dd->control_reg);
 		v &= ~dd->freqsel_mask;
 		v |= freqsel << __ffs(dd->freqsel_mask);
@@ -387,8 +390,8 @@ int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate)
 		if (dd->last_rounded_rate == 0)
 			return -EINVAL;
 
-		/* No freqsel on OMAP4 */
-		if (!cpu_is_omap44xx()) {
+		/* No freqsel on OMAP4 and OMAP3630 */
+		if (!cpu_is_omap44xx() && !cpu_is_omap3630()) {
 			freqsel = _omap3_dpll_compute_freqsel(clk,
 						dd->last_rounded_n);
 			if (!freqsel)
-- 
1.6.6.GIT

[PATCH 13/19] OMAP3: hwmod: support to specify the offset position of various SYSCONFIG register bits.

[Paul Walmsley]

From: Thara Gopinath <thara@ti.com>

In OMAP3 Some modules like Smartreflex do not have the regular sysconfig
register.Instead clockactivity bits are part of another register at a
different bit position than the usual bit positions 8 and 9.

In OMAP4, a new scheme is available  due to the new protocol
between the PRCM and the IPs. Depending of the scheme, the SYSCONFIG
bitfields position will be different.
The IP_REVISION register should be at offset 0x00.
It should contain a SCHEME field. From this we can determine whether
the IP follows legacy scheme or the new scheme.

31:30 SCHEME  Used to distinguish between old scheme and current.
 Read 0x0:  Legacy protocol.
 Read 0x1:  New PRCM protocol defined for new OMAP4 IPs

For legacy IP
 13:12 MIDLEMODE
 11:8  CLOCKACTIVITY
 6     EMUSOFT
 5     EMUFREE
 4:3   SIDLEMODE
 2     ENAWAKEUP
 1     SOFTRESET
 0     AUTOIDLE

For new OMAP4 IP's, the bit position in SYSCONFIG is (for simple target):
 5:4   STANDBYMODE (Ex MIDLEMODE)
 3:2   IDLEMODE (Ex SIDLEMODE)
 1     FREEEMU (Ex EMUFREE)
 0     SOFTRESET

Unfortunately In OMAP4 also some IPs will not follow any of these
two schemes. This is the case at least for McASP, SmartReflex
and some security IPs.

This patch introduces a new field sysc_fields in omap_hwmod_sysconfig which
can be used by the hwmod structures to specify the offsets for the
sysconfig register of the IP.Also two static structures
omap_hwmod_sysc_type1 and omap_hwmod_sysc_type2 are defined
which can be used directly to populate the sysc_fields if the IP follows
legacy or new OMAP4 scheme. If the IP follows none of these two schemes
a new omap_hwmod_sysc_fields structure has to be defined and
passed as part of omap_hwmod_sysconfig.

Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/Makefile                 |    3 +
 arch/arm/mach-omap2/omap_hwmod.c             |  100 +++++++++++++++++++++++---
 arch/arm/mach-omap2/omap_hwmod_common_data.c |   44 +++++++++++
 arch/arm/plat-omap/include/plat/omap_hwmod.h |   73 +++++++++++++++----
 4 files changed, 191 insertions(+), 29 deletions(-)
 create mode 100644 arch/arm/mach-omap2/omap_hwmod_common_data.c

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 34c2867..10e6c6e 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -5,7 +5,8 @@
 # Common support
 obj-y := id.o io.o control.o mux.o devices.o serial.o gpmc.o timer-gp.o
 
-omap-2-3-common				= irq.o sdrc.o omap_hwmod.o
+omap-2-3-common				= irq.o sdrc.o omap_hwmod.o \
+					  omap_hwmod_common_data.o
 omap-3-4-common				= dpll3xxx.o
 prcm-common				= prcm.o powerdomain.o
 clock-common				= clock.o clock_common_data.o \
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 70912d1..fb11ec1 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -137,12 +137,24 @@ static void _write_sysconfig(u32 v, struct omap_hwmod *oh)
 static int _set_master_standbymode(struct omap_hwmod *oh, u8 standbymode,
 				   u32 *v)
 {
+	u32 mstandby_mask;
+	u8 mstandby_shift;
+
 	if (!oh->sysconfig ||
 	    !(oh->sysconfig->sysc_flags & SYSC_HAS_MIDLEMODE))
 		return -EINVAL;
 
-	*v &= ~SYSC_MIDLEMODE_MASK;
-	*v |= __ffs(standbymode) << SYSC_MIDLEMODE_SHIFT;
+	if (!oh->sysconfig->sysc_fields) {
+		WARN(!oh->sysconfig->sysc_fields, "offset struct for "
+			"sysconfig not provided!\n");
+		return -EINVAL;
+	}
+
+	mstandby_shift = oh->sysconfig->sysc_fields->midle_shift;
+	mstandby_mask = (0x3 << mstandby_shift);
+
+	*v &= ~mstandby_mask;
+	*v |= __ffs(standbymode) << mstandby_shift;
 
 	return 0;
 }
@@ -159,12 +171,24 @@ static int _set_master_standbymode(struct omap_hwmod *oh, u8 standbymode,
  */
 static int _set_slave_idlemode(struct omap_hwmod *oh, u8 idlemode, u32 *v)
 {
+	u32 sidle_mask;
+	u8 sidle_shift;
+
 	if (!oh->sysconfig ||
 	    !(oh->sysconfig->sysc_flags & SYSC_HAS_SIDLEMODE))
 		return -EINVAL;
 
-	*v &= ~SYSC_SIDLEMODE_MASK;
-	*v |= __ffs(idlemode) << SYSC_SIDLEMODE_SHIFT;
+	if (!oh->sysconfig->sysc_fields) {
+		WARN(!oh->sysconfig->sysc_fields, "offset struct for "
+			"sysconfig not provided!\n");
+		return -EINVAL;
+	}
+
+	sidle_shift = oh->sysconfig->sysc_fields->sidle_shift;
+	sidle_mask = (0x3 << sidle_shift);
+
+	*v &= ~sidle_mask;
+	*v |= __ffs(idlemode) << sidle_shift;
 
 	return 0;
 }
@@ -182,12 +206,24 @@ static int _set_slave_idlemode(struct omap_hwmod *oh, u8 idlemode, u32 *v)
  */
 static int _set_clockactivity(struct omap_hwmod *oh, u8 clockact, u32 *v)
 {
+	u32 clkact_mask;
+	u8  clkact_shift;
+
 	if (!oh->sysconfig ||
 	    !(oh->sysconfig->sysc_flags & SYSC_HAS_CLOCKACTIVITY))
 		return -EINVAL;
 
-	*v &= ~SYSC_CLOCKACTIVITY_MASK;
-	*v |= clockact << SYSC_CLOCKACTIVITY_SHIFT;
+	if (!oh->sysconfig->sysc_fields) {
+		WARN(!oh->sysconfig->sysc_fields, "offset struct for "
+			"sysconfig not provided!\n");
+		return -EINVAL;
+	}
+
+	clkact_shift = oh->sysconfig->sysc_fields->clkact_shift;
+	clkact_mask = (0x3 << clkact_shift);
+
+	*v &= ~clkact_mask;
+	*v |= clockact << clkact_shift;
 
 	return 0;
 }
@@ -202,11 +238,21 @@ static int _set_clockactivity(struct omap_hwmod *oh, u8 clockact, u32 *v)
  */
 static int _set_softreset(struct omap_hwmod *oh, u32 *v)
 {
+	u32 softrst_mask;
+
 	if (!oh->sysconfig ||
 	    !(oh->sysconfig->sysc_flags & SYSC_HAS_SOFTRESET))
 		return -EINVAL;
 
-	*v |= SYSC_SOFTRESET_MASK;
+	if (!oh->sysconfig->sysc_fields) {
+		WARN(!oh->sysconfig->sysc_fields, "offset struct for "
+			"sysconfig not provided!\n");
+		return -EINVAL;
+	}
+
+	softrst_mask = (0x1 << oh->sysconfig->sysc_fields->srst_shift);
+
+	*v |= softrst_mask;
 
 	return 0;
 }
@@ -227,12 +273,24 @@ static int _set_softreset(struct omap_hwmod *oh, u32 *v)
 static int _set_module_autoidle(struct omap_hwmod *oh, u8 autoidle,
 				u32 *v)
 {
+	u32 autoidle_mask;
+	u8 autoidle_shift;
+
 	if (!oh->sysconfig ||
 	    !(oh->sysconfig->sysc_flags & SYSC_HAS_AUTOIDLE))
 		return -EINVAL;
 
-	*v &= ~SYSC_AUTOIDLE_MASK;
-	*v |= autoidle << SYSC_AUTOIDLE_SHIFT;
+	if (!oh->sysconfig->sysc_fields) {
+		WARN(oh->sysconfig->sysc_fields, "offset struct for "
+			"sysconfig not provided!\n");
+		return -EINVAL;
+	}
+
+	autoidle_shift = oh->sysconfig->sysc_fields->autoidle_shift;
+	autoidle_mask = (0x3 << autoidle_shift);
+
+	*v &= ~autoidle_mask;
+	*v |= autoidle << autoidle_shift;
 
 	return 0;
 }
@@ -246,14 +304,22 @@ static int _set_module_autoidle(struct omap_hwmod *oh, u8 autoidle,
  */
 static int _enable_wakeup(struct omap_hwmod *oh)
 {
-	u32 v;
+	u32 v, wakeup_mask;
 
 	if (!oh->sysconfig ||
 	    !(oh->sysconfig->sysc_flags & SYSC_HAS_ENAWAKEUP))
 		return -EINVAL;
 
+	if (!oh->sysconfig->sysc_fields) {
+		WARN(!oh->sysconfig->sysc_fields, "offset struct for "
+			"sysconfig not provided!\n");
+		return -EINVAL;
+	}
+
+	wakeup_mask = (0x1 << oh->sysconfig->sysc_fields->enwkup_shift);
+
 	v = oh->_sysc_cache;
-	v |= SYSC_ENAWAKEUP_MASK;
+	v |= wakeup_mask;
 	_write_sysconfig(v, oh);
 
 	/* XXX test pwrdm_get_wken for this hwmod's subsystem */
@@ -272,14 +338,22 @@ static int _enable_wakeup(struct omap_hwmod *oh)
  */
 static int _disable_wakeup(struct omap_hwmod *oh)
 {
-	u32 v;
+	u32 v, wakeup_mask;
 
 	if (!oh->sysconfig ||
 	    !(oh->sysconfig->sysc_flags & SYSC_HAS_ENAWAKEUP))
 		return -EINVAL;
 
+	if (!oh->sysconfig->sysc_fields) {
+		WARN(!oh->sysconfig->sysc_fields, "offset struct for "
+			"sysconfig not provided!\n");
+		return -EINVAL;
+	}
+
+	wakeup_mask = (0x1 << oh->sysconfig->sysc_fields->enwkup_shift);
+
 	v = oh->_sysc_cache;
-	v &= ~SYSC_ENAWAKEUP_MASK;
+	v &= ~wakeup_mask;
 	_write_sysconfig(v, oh);
 
 	/* XXX test pwrdm_get_wken for this hwmod's subsystem */
diff --git a/arch/arm/mach-omap2/omap_hwmod_common_data.c b/arch/arm/mach-omap2/omap_hwmod_common_data.c
new file mode 100644
index 0000000..2567c6e
--- /dev/null
+++ b/arch/arm/mach-omap2/omap_hwmod_common_data.c
@@ -0,0 +1,44 @@
+/*
+ * omap_hwmod common data structures
+ *
+ * Copyright (C) 2010 Texas Instruments, Inc.
+ * Thara Gopinath <thara@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This data/structures are to be used while defining OMAP on-chip module
+ * data and their integration with other OMAP modules and Linux.
+ */
+
+#include <plat/omap_hwmod.h>
+
+/**
+ * struct omap_hwmod_sysc_type1 - TYPE1 sysconfig scheme.
+ *
+ * To be used by hwmod structure to specify the sysconfig offsets
+ * if the device ip is compliant with the original PRCM protocol
+ * defined for OMAP2420.
+ */
+struct omap_hwmod_sysc_fields omap_hwmod_sysc_type1 = {
+	.midle_shift	= SYSC_TYPE1_MIDLEMODE_SHIFT,
+	.clkact_shift	= SYSC_TYPE1_CLOCKACTIVITY_SHIFT,
+	.sidle_shift	= SYSC_TYPE1_SIDLEMODE_SHIFT,
+	.enwkup_shift	= SYSC_TYPE1_ENAWAKEUP_SHIFT,
+	.srst_shift	= SYSC_TYPE1_SOFTRESET_SHIFT,
+	.autoidle_shift	= SYSC_TYPE1_AUTOIDLE_SHIFT,
+};
+
+/**
+ * struct omap_hwmod_sysc_type2 - TYPE2 sysconfig scheme.
+ *
+ * To be used by hwmod structure to specify the sysconfig offsets if the
+ * device ip is compliant with the new PRCM protocol defined for new
+ * OMAP4 IPs.
+ */
+struct omap_hwmod_sysc_fields omap_hwmod_sysc_type2 = {
+	.midle_shift	= SYSC_TYPE2_MIDLEMODE_SHIFT,
+	.sidle_shift	= SYSC_TYPE2_SIDLEMODE_SHIFT,
+	.srst_shift	= SYSC_TYPE2_SOFTRESET_SHIFT,
+};
diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h
index 921990e..665420e 100644
--- a/arch/arm/plat-omap/include/plat/omap_hwmod.h
+++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h
@@ -33,25 +33,42 @@
 #define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD_H
 
 #include <linux/kernel.h>
+#include <linux/list.h>
 #include <linux/ioport.h>
-
 #include <plat/cpu.h>
 
 struct omap_device;
 
-/* OCP SYSCONFIG bit shifts/masks */
-#define SYSC_MIDLEMODE_SHIFT		12
-#define SYSC_MIDLEMODE_MASK		(0x3 << SYSC_MIDLEMODE_SHIFT)
-#define SYSC_CLOCKACTIVITY_SHIFT	8
-#define SYSC_CLOCKACTIVITY_MASK		(0x3 << SYSC_CLOCKACTIVITY_SHIFT)
-#define SYSC_SIDLEMODE_SHIFT		3
-#define SYSC_SIDLEMODE_MASK		(0x3 << SYSC_SIDLEMODE_SHIFT)
-#define SYSC_ENAWAKEUP_SHIFT		2
-#define SYSC_ENAWAKEUP_MASK		(1 << SYSC_ENAWAKEUP_SHIFT)
-#define SYSC_SOFTRESET_SHIFT		1
-#define SYSC_SOFTRESET_MASK		(1 << SYSC_SOFTRESET_SHIFT)
-#define SYSC_AUTOIDLE_SHIFT		0
-#define SYSC_AUTOIDLE_MASK		(1 << SYSC_AUTOIDLE_SHIFT)
+extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type1;
+extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type2;
+
+/*
+ * OCP SYSCONFIG bit shifts/masks TYPE1. These are for IPs compliant
+ * with the original PRCM protocol defined for OMAP2420
+ */
+#define SYSC_TYPE1_MIDLEMODE_SHIFT	12
+#define SYSC_TYPE1_MIDLEMODE_MASK	(0x3 << SYSC_MIDLEMODE_SHIFT)
+#define SYSC_TYPE1_CLOCKACTIVITY_SHIFT	8
+#define SYSC_TYPE1_CLOCKACTIVITY_MASK	(0x3 << SYSC_CLOCKACTIVITY_SHIFT)
+#define SYSC_TYPE1_SIDLEMODE_SHIFT	3
+#define SYSC_TYPE1_SIDLEMODE_MASK	(0x3 << SYSC_SIDLEMODE_SHIFT)
+#define SYSC_TYPE1_ENAWAKEUP_SHIFT	2
+#define SYSC_TYPE1_ENAWAKEUP_MASK	(1 << SYSC_ENAWAKEUP_SHIFT)
+#define SYSC_TYPE1_SOFTRESET_SHIFT	1
+#define SYSC_TYPE1_SOFTRESET_MASK	(1 << SYSC_SOFTRESET_SHIFT)
+#define SYSC_TYPE1_AUTOIDLE_SHIFT	0
+#define SYSC_TYPE1_AUTOIDLE_MASK	(1 << SYSC_AUTOIDLE_SHIFT)
+
+/*
+ * OCP SYSCONFIG bit shifts/masks TYPE2. These are for IPs compliant
+ * with the new PRCM protocol defined for new OMAP4 IPs.
+ */
+#define SYSC_TYPE2_SOFTRESET_SHIFT	0
+#define SYSC_TYPE2_SOFTRESET_MASK	(1 << SYSC_TYPE2_SOFTRESET_SHIFT)
+#define SYSC_TYPE2_SIDLEMODE_SHIFT	2
+#define SYSC_TYPE2_SIDLEMODE_MASK	(0x3 << SYSC_TYPE2_SIDLEMODE_SHIFT)
+#define SYSC_TYPE2_MIDLEMODE_SHIFT	4
+#define SYSC_TYPE2_MIDLEMODE_MASK	(0x3 << SYSC_TYPE2_MIDLEMODE_SHIFT)
 
 /* OCP SYSSTATUS bit shifts/masks */
 #define SYSS_RESETDONE_SHIFT		0
@@ -62,7 +79,6 @@ struct omap_device;
 #define HWMOD_IDLEMODE_NO		(1 << 1)
 #define HWMOD_IDLEMODE_SMART		(1 << 2)
 
-
 /**
  * struct omap_hwmod_irq_info - MPU IRQs used by the hwmod
  * @name: name of the IRQ channel (module local name)
@@ -236,6 +252,24 @@ struct omap_hwmod_ocp_if {
 #define CLOCKACT_TEST_NONE	0x3
 
 /**
+ * struct omap_hwmod_sysc_fields - hwmod OCP_SYSCONFIG register field offsets.
+ * @midle_shift: Offset of the midle bit
+ * @clkact_shift: Offset of the clockactivity bit
+ * @sidle_shift: Offset of the sidle bit
+ * @enwkup_shift: Offset of the enawakeup bit
+ * @srst_shift: Offset of the softreset bit
+ * @autoidle_shift: Offset of the autoidle bit.
+ */
+struct omap_hwmod_sysc_fields {
+	u8 midle_shift;
+	u8 clkact_shift;
+	u8 sidle_shift;
+	u8 enwkup_shift;
+	u8 srst_shift;
+	u8 autoidle_shift;
+};
+
+/**
  * struct omap_hwmod_sysconfig - hwmod OCP_SYSCONFIG/OCP_SYSSTATUS data
  * @rev_offs: IP block revision register offset (from module base addr)
  * @sysc_offs: OCP_SYSCONFIG register offset (from module base addr)
@@ -252,6 +286,14 @@ struct omap_hwmod_ocp_if {
  * been associated with the clocks marked in @clockact.  This field is
  * only used if HWMOD_SET_DEFAULT_CLOCKACT is set (see below)
  *
+ *
+ * @sysc_fields: structure containing the offset positions of various bits in
+ * SYSCONFIG register. This can be populated using omap_hwmod_sysc_type1 or
+ * omap_hwmod_sysc_type2 defined in omap_hwmod_common_data.c depending on
+ * whether the device ip is compliant with the original PRCM protocol
+ * defined for OMAP2420 or the new  PRCM protocol for new OMAP4 IPs.
+ * If the device follows a differnt scheme for the sysconfig register ,
+ * then this field has to be populated with the correct offset structure.
  */
 struct omap_hwmod_sysconfig {
 	u16 rev_offs;
@@ -260,6 +302,7 @@ struct omap_hwmod_sysconfig {
 	u8 idlemodes;
 	u8 sysc_flags;
 	u8 clockact;
+	struct omap_hwmod_sysc_fields *sysc_fields;
 };
 
 /**

[PATCH 14/19] OMAP: HWMOD: Add support for early device register into omap device layer

[Paul Walmsley]

From: Thara Gopinath <thara@ti.com>

This patch adds support in omap device layer to register devices
as early platform devices. Certain devices needed during system boot up
like timers, gpio etc can be registered as early devices. This will
allow for them to be probed very early on during system boot up.
This patch adds a parameter is_early_device in omap_device_build.
Depending on this parameter a call to early_platform_add_devices
or platform_register_device is made.

Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/plat-omap/include/plat/omap_device.h |    5 ++--
 arch/arm/plat-omap/omap_device.c              |   33 ++++++++++++++++++++++---
 2 files changed, 32 insertions(+), 6 deletions(-)

diff --git a/arch/arm/plat-omap/include/plat/omap_device.h b/arch/arm/plat-omap/include/plat/omap_device.h
index 4677ff7..3694b62 100644
--- a/arch/arm/plat-omap/include/plat/omap_device.h
+++ b/arch/arm/plat-omap/include/plat/omap_device.h
@@ -90,15 +90,16 @@ struct omap_device *omap_device_build(const char *pdev_name, int pdev_id,
 				      struct omap_hwmod *oh, void *pdata,
 				      int pdata_len,
 				      struct omap_device_pm_latency *pm_lats,
-				      int pm_lats_cnt);
+				      int pm_lats_cnt, int is_early_device);
 
 struct omap_device *omap_device_build_ss(const char *pdev_name, int pdev_id,
 					 struct omap_hwmod **oh, int oh_cnt,
 					 void *pdata, int pdata_len,
 					 struct omap_device_pm_latency *pm_lats,
-					 int pm_lats_cnt);
+					 int pm_lats_cnt, int is_early_device);
 
 int omap_device_register(struct omap_device *od);
+int omap_early_device_register(struct omap_device *od);
 
 /* OMAP PM interface */
 int omap_device_align_pm_lat(struct platform_device *pdev,
diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c
index c739a04..5904358 100644
--- a/arch/arm/plat-omap/omap_device.c
+++ b/arch/arm/plat-omap/omap_device.c
@@ -307,6 +307,7 @@ int omap_device_fill_resources(struct omap_device *od, struct resource *res)
  * @pdata_len: amount of memory pointed to by @pdata
  * @pm_lats: pointer to a omap_device_pm_latency array for this device
  * @pm_lats_cnt: ARRAY_SIZE() of @pm_lats
+ * @is_early_device: should the device be registered as an early device or not
  *
  * Convenience function for building and registering a single
  * omap_device record, which in turn builds and registers a
@@ -318,7 +319,7 @@ struct omap_device *omap_device_build(const char *pdev_name, int pdev_id,
 				      struct omap_hwmod *oh, void *pdata,
 				      int pdata_len,
 				      struct omap_device_pm_latency *pm_lats,
-				      int pm_lats_cnt)
+				      int pm_lats_cnt, int is_early_device)
 {
 	struct omap_hwmod *ohs[] = { oh };
 
@@ -326,7 +327,8 @@ struct omap_device *omap_device_build(const char *pdev_name, int pdev_id,
 		return ERR_PTR(-EINVAL);
 
 	return omap_device_build_ss(pdev_name, pdev_id, ohs, 1, pdata,
-				    pdata_len, pm_lats, pm_lats_cnt);
+				    pdata_len, pm_lats, pm_lats_cnt,
+				    is_early_device);
 }
 
 /**
@@ -338,6 +340,7 @@ struct omap_device *omap_device_build(const char *pdev_name, int pdev_id,
  * @pdata_len: amount of memory pointed to by @pdata
  * @pm_lats: pointer to a omap_device_pm_latency array for this device
  * @pm_lats_cnt: ARRAY_SIZE() of @pm_lats
+ * @is_early_device: should the device be registered as an early device or not
  *
  * Convenience function for building and registering an omap_device
  * subsystem record.  Subsystem records consist of multiple
@@ -349,7 +352,7 @@ struct omap_device *omap_device_build_ss(const char *pdev_name, int pdev_id,
 					 struct omap_hwmod **ohs, int oh_cnt,
 					 void *pdata, int pdata_len,
 					 struct omap_device_pm_latency *pm_lats,
-					 int pm_lats_cnt)
+					 int pm_lats_cnt, int is_early_device)
 {
 	int ret = -ENOMEM;
 	struct omap_device *od;
@@ -407,7 +410,11 @@ struct omap_device *omap_device_build_ss(const char *pdev_name, int pdev_id,
 
 	od->magic = OMAP_DEVICE_MAGIC;
 
-	ret = omap_device_register(od);
+	if (is_early_device)
+		ret = omap_early_device_register(od);
+	else
+		ret = omap_device_register(od);
+
 	if (ret)
 		goto odbs_exit4;
 
@@ -428,6 +435,24 @@ odbs_exit1:
 }
 
 /**
+ * omap_early_device_register - register an omap_device as an early platform
+ * device.
+ * @od: struct omap_device * to register
+ *
+ * Register the omap_device structure.  This currently just calls
+ * platform_early_add_device() on the underlying platform_device.
+ * Returns 0 by default.
+ */
+int omap_early_device_register(struct omap_device *od)
+{
+	struct platform_device *devices[1];
+
+	devices[0] = &(od->pdev);
+	early_platform_add_devices(devices, 1);
+	return 0;
+}
+
+/**
  * omap_device_register - register an omap_device with one omap_hwmod
  * @od: struct omap_device * to register
  *

[PATCH 15/19] OMAP3630: Clock: Workaround for DPLL HS divider limitation

[Paul Walmsley]

From: Mike Turquette <mturquette@ti.com>

This patch implements a workaround for the DPLL HS divider limitation
in OMAP3630 as given by Errata ID: i556.

Errata:
When PWRDN bit is set, it resets the internal HSDIVIDER divide-by value (Mx).
The reset value gets loaded instead of the previous value.
The following HSDIVIDERs exhibit above behavior:
. DPLL4 : M6 / M5 / M4 / M3 / M2 (CM_CLKEN_PLL[31:26] register bits)
. DPLL3 : M3 (CM_CLKEN_PLL[12] register bit).

Work Around:
It is mandatory to apply the following sequence to ensure the write
value will
be loaded in DPLL HSDIVIDER FSM:
The global sequence when using PWRDN bit is the following:
. Disable Mx HSDIVIDER clock output related functional clock enable bits
        (in CM_FCLKEN_xxx / CM_ICLKEN_xxx)
. Enable PWRDN bit of HSDIVIDER
. Disable PWRDN bit of HSDIVIDER
. Read current HSDIVIDER register value
. Write different value in HSDIVIDER register
. Write expected value in HSDIVIDER register
. Enable Mx HSDIVIDER clock output related functional clocks
        (CM_FCLKEN_xxx / CM_ICLKEN_xxx)

Signed-off-by: Mike Turquette <mturquette@ti.com>
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
Signed-off-by: Vijaykumar GN <vijaykumar.gn@ti.com>
[paul at pwsan.com: updated patch to apply; made workaround function static;
 marked as being 36xx-specific]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/clock34xx.c      |   43 ++++++++++++++++++++++++++++++++++
 arch/arm/mach-omap2/clock34xx.h      |    3 ++
 arch/arm/mach-omap2/clock34xx_data.c |   19 +++++++++++++++
 3 files changed, 65 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/clock34xx.c b/arch/arm/mach-omap2/clock34xx.c
index 37da629..c8b4e56 100644
--- a/arch/arm/mach-omap2/clock34xx.c
+++ b/arch/arm/mach-omap2/clock34xx.c
@@ -150,6 +150,49 @@ const struct clkops clkops_omap3430es2_hsotgusb_wait = {
 	.find_companion = omap2_clk_dflt_find_companion,
 };
 
+/**
+ * omap36xx_pwrdn_clk_enable_with_hsdiv_restore - enable clocks suffering
+ *         from HSDivider PWRDN problem Implements Errata ID: i556.
+ * @clk: DPLL output struct clk
+ *
+ * 3630 only: dpll3_m3_ck, dpll4_m2_ck, dpll4_m3_ck, dpll4_m4_ck,
+ * dpll4_m5_ck & dpll4_m6_ck dividers gets loaded with reset
+ * valueafter their respective PWRDN bits are set.  Any dummy write
+ * (Any other value different from the Read value) to the
+ * corresponding CM_CLKSEL register will refresh the dividers.
+ */
+static int omap36xx_pwrdn_clk_enable_with_hsdiv_restore(struct clk *clk)
+{
+	u32 dummy_v, orig_v, clksel_shift;
+	int ret;
+
+	/* Clear PWRDN bit of HSDIVIDER */
+	ret = omap2_dflt_clk_enable(clk);
+
+	/* Restore the dividers */
+	if (!ret) {
+		clksel_shift = __ffs(clk->parent->clksel_mask);
+		orig_v = __raw_readl(clk->parent->clksel_reg);
+		dummy_v = orig_v;
+
+		/* Write any other value different from the Read value */
+		dummy_v ^= (1 << clksel_shift);
+		__raw_writel(dummy_v, clk->parent->clksel_reg);
+
+		/* Write the original divider */
+		__raw_writel(orig_v, clk->parent->clksel_reg);
+	}
+
+	return ret;
+}
+
+const struct clkops clkops_omap36xx_pwrdn_with_hsdiv_wait_restore = {
+	.enable		= omap36xx_pwrdn_clk_enable_with_hsdiv_restore,
+	.disable	= omap2_dflt_clk_disable,
+	.find_companion	= omap2_clk_dflt_find_companion,
+	.find_idlest	= omap2_clk_dflt_find_idlest,
+};
+
 const struct clkops clkops_noncore_dpll_ops = {
 	.enable		= omap3_noncore_dpll_enable,
 	.disable	= omap3_noncore_dpll_disable,
diff --git a/arch/arm/mach-omap2/clock34xx.h b/arch/arm/mach-omap2/clock34xx.h
index e61e653..b9c65f5 100644
--- a/arch/arm/mach-omap2/clock34xx.h
+++ b/arch/arm/mach-omap2/clock34xx.h
@@ -26,4 +26,7 @@ extern const struct clkops clkops_noncore_dpll_ops;
 extern const struct clkops clkops_am35xx_ipss_module_wait;
 extern const struct clkops clkops_am35xx_ipss_wait;
 
+/* OMAP36xx-specific clkops */
+extern const struct clkops clkops_omap36xx_pwrdn_with_hsdiv_wait_restore;
+
 #endif
diff --git a/arch/arm/mach-omap2/clock34xx_data.c b/arch/arm/mach-omap2/clock34xx_data.c
index d9d5b2e..caa6a41 100644
--- a/arch/arm/mach-omap2/clock34xx_data.c
+++ b/arch/arm/mach-omap2/clock34xx_data.c
@@ -3358,6 +3358,25 @@ int __init omap3xxx_clk_init(void)
 		}
 	}
 
+	if (cpu_is_omap3630()) {
+		/*
+		 * For 3630: override clkops_omap2_dflt_wait for the
+		 * clocks affected from PWRDN reset Limitation
+		 */
+		dpll3_m3x2_ck.ops =
+				&clkops_omap36xx_pwrdn_with_hsdiv_wait_restore;
+		dpll4_m2x2_ck.ops =
+				&clkops_omap36xx_pwrdn_with_hsdiv_wait_restore;
+		dpll4_m3x2_ck.ops =
+				&clkops_omap36xx_pwrdn_with_hsdiv_wait_restore;
+		dpll4_m4x2_ck.ops =
+				&clkops_omap36xx_pwrdn_with_hsdiv_wait_restore;
+		dpll4_m5x2_ck.ops =
+				&clkops_omap36xx_pwrdn_with_hsdiv_wait_restore;
+		dpll4_m6x2_ck.ops =
+				&clkops_omap36xx_pwrdn_with_hsdiv_wait_restore;
+	}
+
 	clk_init(&omap2_clk_functions);
 
 	for (c = omap3xxx_clks; c < omap3xxx_clks + ARRAY_SIZE(omap3xxx_clks); c++)

[PATCH 16/19] ARM: OMAP4 clock domain: Add check for avoiding dependency related update.

[Paul Walmsley]

From: Abhijit Pagare <abhijitpagare@ti.com>

A check is added for avoiding the sleep/wakeup dependency updates
for OMAP4 as the structures for the dependencies are currently absent.

Signed-off-by: Abhijit Pagare <abhijitpagare@ti.com>
[paul at pwsan.com: added warnings, explanatory comment, copyright update]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/clockdomain.c |   30 ++++++++++++++++++++++++------
 1 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c
index a38a615..de4278c 100644
--- a/arch/arm/mach-omap2/clockdomain.c
+++ b/arch/arm/mach-omap2/clockdomain.c
@@ -1,8 +1,8 @@
 /*
  * OMAP2/3/4 clockdomain framework functions
  *
- * Copyright (C) 2008-2009 Texas Instruments, Inc.
- * Copyright (C) 2008-2009 Nokia Corporation
+ * Copyright (C) 2008-2010 Texas Instruments, Inc.
+ * Copyright (C) 2008-2010 Nokia Corporation
  *
  * Written by Paul Walmsley and Jouni H?gander
  * Added OMAP4 specific support by Abhijit Pagare <abhijitpagare@ti.com>
@@ -891,8 +891,17 @@ void omap2_clkdm_allow_idle(struct clockdomain *clkdm)
 	pr_debug("clockdomain: enabling automatic idle transitions for %s\n",
 		 clkdm->name);
 
-	if (atomic_read(&clkdm->usecount) > 0)
-		_clkdm_add_autodeps(clkdm);
+	/*
+	 * XXX This should be removed once TI adds wakeup/sleep
+	 * dependency code and data for OMAP4.
+	 */
+	if (cpu_is_omap44xx()) {
+		WARN_ONCE(1, "clockdomain: OMAP4 wakeup/sleep dependency "
+			  "support is not yet implemented\n");
+	} else {
+		if (atomic_read(&clkdm->usecount) > 0)
+			_clkdm_add_autodeps(clkdm);
+	}
 
 	_omap2_clkdm_set_hwsup(clkdm, 1);
 
@@ -924,8 +933,17 @@ void omap2_clkdm_deny_idle(struct clockdomain *clkdm)
 
 	_omap2_clkdm_set_hwsup(clkdm, 0);
 
-	if (atomic_read(&clkdm->usecount) > 0)
-		_clkdm_del_autodeps(clkdm);
+	/*
+	 * XXX This should be removed once TI adds wakeup/sleep
+	 * dependency code and data for OMAP4.
+	 */
+	if (cpu_is_omap44xx()) {
+		WARN_ONCE(1, "clockdomain: OMAP4 wakeup/sleep dependency "
+			  "support is not yet implemented\n");
+	} else {
+		if (atomic_read(&clkdm->usecount) > 0)
+			_clkdm_del_autodeps(clkdm);
+	}
 }
 
 

[PATCH 17/19] OMAP3 clock: introduce DPLL4 Jtype

[Paul Walmsley]

From: Richard Woodruff <r-woodruff2@ti.com>

DPLL4 for 3630 introduces a changed block called j type dpll, requiring
special divisor bits and additional reg fields. To allow for silicons to
use this, this is introduced as a flag and is enabled for 3630 silicon.
OMAP4 also has j type dpll for usb.

Tested with 3630 ZOOM3 and OMAP3430 ZOOM2

Signed-off-by: Richard Woodruff <r-woodruff2@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Vishwanath BS <Vishwanath.bs@ti.com>
[paul at pwsan.com: added some comments; updated copyrights and credits; fixed
 some style issues]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/clock.h             |    4 ++
 arch/arm/mach-omap2/clock34xx_data.c    |   32 ++++++++++++++-
 arch/arm/mach-omap2/clock44xx_data.c    |    1 
 arch/arm/mach-omap2/cm-regbits-34xx.h   |    5 ++
 arch/arm/mach-omap2/dpll3xxx.c          |   67 +++++++++++++++++++++++++++++--
 arch/arm/plat-omap/include/plat/clock.h |    5 ++
 6 files changed, 109 insertions(+), 5 deletions(-)

diff --git a/arch/arm/mach-omap2/clock.h b/arch/arm/mach-omap2/clock.h
index c500a5f..f7e7100 100644
--- a/arch/arm/mach-omap2/clock.h
+++ b/arch/arm/mach-omap2/clock.h
@@ -47,6 +47,10 @@
 #define DPLL_LOW_POWER_BYPASS	0x5
 #define DPLL_LOCKED		0x7
 
+/* DPLL Type and DCO Selection Flags */
+#define DPLL_J_TYPE		0x1
+#define DPLL_NO_DCO_SEL		0x2
+
 int omap2_clk_enable(struct clk *clk);
 void omap2_clk_disable(struct clk *clk);
 long omap2_clk_round_rate(struct clk *clk, unsigned long rate);
diff --git a/arch/arm/mach-omap2/clock34xx_data.c b/arch/arm/mach-omap2/clock34xx_data.c
index caa6a41..8be3eda 100644
--- a/arch/arm/mach-omap2/clock34xx_data.c
+++ b/arch/arm/mach-omap2/clock34xx_data.c
@@ -38,6 +38,7 @@
 
 /* Maximum DPLL multiplier, divider values for OMAP3 */
 #define OMAP3_MAX_DPLL_MULT		2048
+#define OMAP3630_MAX_JTYPE_DPLL_MULT	4095
 #define OMAP3_MAX_DPLL_DIV		128
 
 /*
@@ -529,7 +530,8 @@ static struct clk emu_core_alwon_ck = {
 /* DPLL4 */
 /* Supplies 96MHz, 54Mhz TV DAC, DSS fclk, CAM sensor clock, emul trace clk */
 /* Type: DPLL */
-static struct dpll_data dpll4_dd = {
+static struct dpll_data dpll4_dd;
+static struct dpll_data dpll4_dd_34xx __initdata = {
 	.mult_div1_reg	= OMAP_CM_REGADDR(PLL_MOD, CM_CLKSEL2),
 	.mult_mask	= OMAP3430_PERIPH_DPLL_MULT_MASK,
 	.div1_mask	= OMAP3430_PERIPH_DPLL_DIV_MASK,
@@ -552,6 +554,29 @@ static struct dpll_data dpll4_dd = {
 	.rate_tolerance = DEFAULT_DPLL_RATE_TOLERANCE
 };
 
+static struct dpll_data dpll4_dd_3630 __initdata = {
+	.mult_div1_reg	= OMAP_CM_REGADDR(PLL_MOD, CM_CLKSEL2),
+	.mult_mask	= OMAP3630_PERIPH_DPLL_MULT_MASK,
+	.div1_mask	= OMAP3430_PERIPH_DPLL_DIV_MASK,
+	.clk_bypass	= &sys_ck,
+	.clk_ref	= &sys_ck,
+	.control_reg	= OMAP_CM_REGADDR(PLL_MOD, CM_CLKEN),
+	.enable_mask	= OMAP3430_EN_PERIPH_DPLL_MASK,
+	.modes		= (1 << DPLL_LOW_POWER_STOP) | (1 << DPLL_LOCKED),
+	.auto_recal_bit	= OMAP3430_EN_PERIPH_DPLL_DRIFTGUARD_SHIFT,
+	.recal_en_bit	= OMAP3430_PERIPH_DPLL_RECAL_EN_SHIFT,
+	.recal_st_bit	= OMAP3430_PERIPH_DPLL_ST_SHIFT,
+	.autoidle_reg	= OMAP_CM_REGADDR(PLL_MOD, CM_AUTOIDLE),
+	.autoidle_mask	= OMAP3430_AUTO_PERIPH_DPLL_MASK,
+	.idlest_reg	= OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST),
+	.idlest_mask	= OMAP3430_ST_PERIPH_CLK_MASK,
+	.max_multiplier = OMAP3630_MAX_JTYPE_DPLL_MULT,
+	.min_divider	= 1,
+	.max_divider	= OMAP3_MAX_DPLL_DIV,
+	.rate_tolerance = DEFAULT_DPLL_RATE_TOLERANCE,
+	.flags		= DPLL_J_TYPE
+};
+
 static struct clk dpll4_ck = {
 	.name		= "dpll4_ck",
 	.ops		= &clkops_noncore_dpll_ops,
@@ -3377,6 +3402,11 @@ int __init omap3xxx_clk_init(void)
 				&clkops_omap36xx_pwrdn_with_hsdiv_wait_restore;
 	}
 
+	if (cpu_is_omap3630())
+		dpll4_dd = dpll4_dd_3630;
+	else
+		dpll4_dd = dpll4_dd_34xx;
+
 	clk_init(&omap2_clk_functions);
 
 	for (c = omap3xxx_clks; c < omap3xxx_clks + ARRAY_SIZE(omap3xxx_clks); c++)
diff --git a/arch/arm/mach-omap2/clock44xx_data.c b/arch/arm/mach-omap2/clock44xx_data.c
index 35ffe63..3165f53 100644
--- a/arch/arm/mach-omap2/clock44xx_data.c
+++ b/arch/arm/mach-omap2/clock44xx_data.c
@@ -980,6 +980,7 @@ static struct dpll_data dpll_usb_dd = {
 	.max_multiplier	= OMAP4430_MAX_DPLL_MULT,
 	.max_divider	= OMAP4430_MAX_DPLL_DIV,
 	.min_divider	= 1,
+	.flags		= DPLL_J_TYPE | DPLL_NO_DCO_SEL
 };
 
 
diff --git a/arch/arm/mach-omap2/cm-regbits-34xx.h b/arch/arm/mach-omap2/cm-regbits-34xx.h
index c04c7c6..29cd13b 100644
--- a/arch/arm/mach-omap2/cm-regbits-34xx.h
+++ b/arch/arm/mach-omap2/cm-regbits-34xx.h
@@ -531,8 +531,13 @@
 /* CM_CLKSEL2_PLL */
 #define OMAP3430_PERIPH_DPLL_MULT_SHIFT			8
 #define OMAP3430_PERIPH_DPLL_MULT_MASK			(0x7ff << 8)
+#define OMAP3630_PERIPH_DPLL_MULT_MASK			(0xfff << 8)
 #define OMAP3430_PERIPH_DPLL_DIV_SHIFT			0
 #define OMAP3430_PERIPH_DPLL_DIV_MASK			(0x7f << 0)
+#define OMAP3630_PERIPH_DPLL_DCO_SEL_SHIFT		21
+#define OMAP3630_PERIPH_DPLL_DCO_SEL_MASK		(0x7 << 21)
+#define OMAP3630_PERIPH_DPLL_SD_DIV_SHIFT		24
+#define OMAP3630_PERIPH_DPLL_SD_DIV_MASK		(0xff << 24)
 
 /* CM_CLKSEL3_PLL */
 #define OMAP3430_DIV_96M_SHIFT				0
diff --git a/arch/arm/mach-omap2/dpll3xxx.c b/arch/arm/mach-omap2/dpll3xxx.c
index 84be81c..781f750 100644
--- a/arch/arm/mach-omap2/dpll3xxx.c
+++ b/arch/arm/mach-omap2/dpll3xxx.c
@@ -1,11 +1,14 @@
 /*
  * OMAP3/4 - specific DPLL control functions
  *
- * Copyright (C) 2009 Texas Instruments, Inc.
- * Copyright (C) 2009 Nokia Corporation
+ * Copyright (C) 2009-2010 Texas Instruments, Inc.
+ * Copyright (C) 2009-2010 Nokia Corporation
  *
  * Written by Paul Walmsley
- * Testing and integration fixes by Jouni H??gander
+ * Testing and integration fixes by Jouni H?gander
+ *
+ * 36xx support added by Vishwanath BS, Richard Woodruff, and Nishanth
+ * Menon
  *
  * Parts of this code are based on code written by
  * Richard Woodruff, Tony Lindgren, Tuukka Tikkanen, Karthik Dasu
@@ -225,6 +228,47 @@ static int _omap3_noncore_dpll_stop(struct clk *clk)
 	return 0;
 }
 
+/**
+ * lookup_dco_sddiv -  Set j-type DPLL4 compensation variables
+ * @clk: pointer to a DPLL struct clk
+ * @dco: digital control oscillator selector
+ * @sd_div: target sigma-delta divider
+ * @m: DPLL multiplier to set
+ * @n: DPLL divider to set
+ *
+ * See 36xx TRM section 3.5.3.3.3.2 "Type B DPLL (Low-Jitter)"
+ *
+ * XXX This code is not needed for 3430/AM35xx; can it be optimized
+ * out in non-multi-OMAP builds for those chips?
+ */
+static void lookup_dco_sddiv(struct clk *clk, u8 *dco, u8 *sd_div, u16 m,
+			     u8 n)
+{
+	unsigned long fint, clkinp, sd; /* watch out for overflow */
+	int mod1, mod2;
+
+	clkinp = clk->parent->rate;
+	fint = (clkinp / n) * m;
+
+	if (fint < 1000000000)
+		*dco = 2;
+	else
+		*dco = 4;
+	/*
+	 * target sigma-delta to near 250MHz
+	 * sd = ceil[(m/(n+1)) * (clkinp_MHz / 250)]
+	 */
+	clkinp /= 100000; /* shift from MHz to 10*Hz for 38.4 and 19.2 */
+	mod1 = (clkinp * m) % (250 * n);
+	sd = (clkinp * m) / (250 * n);
+	mod2 = sd % 10;
+	sd /= 10;
+
+	if (mod1 || mod2)
+		sd++;
+	*sd_div = sd;
+}
+
 /*
  * _omap3_noncore_dpll_program - set non-core DPLL M,N values directly
  * @clk: struct clk * of DPLL to set
@@ -259,6 +303,21 @@ static int omap3_noncore_dpll_program(struct clk *clk, u16 m, u8 n, u16 freqsel)
 	v &= ~(dd->mult_mask | dd->div1_mask);
 	v |= m << __ffs(dd->mult_mask);
 	v |= (n - 1) << __ffs(dd->div1_mask);
+
+	/*
+	 * XXX This code is not needed for 3430/AM35XX; can it be optimized
+	 * out in non-multi-OMAP builds for those chips?
+	 */
+	if ((dd->flags & DPLL_J_TYPE) && !(dd->flags & DPLL_NO_DCO_SEL)) {
+		u8 dco, sd_div;
+		lookup_dco_sddiv(clk, &dco, &sd_div, m, n);
+		/* XXX This probably will need revision for OMAP4 */
+		v &= ~(OMAP3630_PERIPH_DPLL_DCO_SEL_MASK
+			| OMAP3630_PERIPH_DPLL_SD_DIV_MASK);
+		v |= dco << __ffs(OMAP3630_PERIPH_DPLL_DCO_SEL_MASK);
+		v |= sd_div << __ffs(OMAP3630_PERIPH_DPLL_SD_DIV_MASK);
+	}
+
 	__raw_writel(v, dd->mult_div1_reg);
 
 	/* We let the clock framework set the other output dividers later */
@@ -536,7 +595,7 @@ unsigned long omap3_clkoutx2_recalc(struct clk *clk)
 
 	v = __raw_readl(dd->control_reg) & dd->enable_mask;
 	v >>= __ffs(dd->enable_mask);
-	if (v != OMAP3XXX_EN_DPLL_LOCKED)
+	if ((v != OMAP3XXX_EN_DPLL_LOCKED) || (dd->flags & DPLL_J_TYPE))
 		rate = clk->parent->rate;
 	else
 		rate = clk->parent->rate * 2;
diff --git a/arch/arm/plat-omap/include/plat/clock.h b/arch/arm/plat-omap/include/plat/clock.h
index 9042dab..66ebb08 100644
--- a/arch/arm/plat-omap/include/plat/clock.h
+++ b/arch/arm/plat-omap/include/plat/clock.h
@@ -42,6 +42,10 @@ struct clksel {
 	const struct clksel_rate *rates;
 };
 
+/*
+ * A new flag called flag has been added which indicates what is the
+ * type of dpll (like j_type, no_dco_sel)
+ */
 struct dpll_data {
 	void __iomem		*mult_div1_reg;
 	u32			mult_mask;
@@ -68,6 +72,7 @@ struct dpll_data {
 	u8			auto_recal_bit;
 	u8			recal_en_bit;
 	u8			recal_st_bit;
+	u8			flags;
 #  endif
 };
 

[PATCH 18/19] OMAP3 clock: Introduce 3630 DPLL4 HSDivider changes

[Paul Walmsley]

From: Vishwanath BS <vishwanath.bs@ti.com>

Divider (M2, M3, M4, M5 and M6) field width has been increased by 1 bit
in 3630. This patch has changes to accommodate this in CM dynamically
based on chip version.
Basically new clock nodes have been added for 3630 DPLL4 M2,M3,M4,M5 and
M6 and value of these nodes are used if cpu type is 3630.

Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
[paul at pwsan.com: updated to apply on 2.6.34 queue; comments added]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/clock34xx_data.c    |  146 ++++++++++++++++++++++++++++++-
 arch/arm/mach-omap2/cm-regbits-34xx.h   |    5 +
 arch/arm/plat-omap/include/plat/clock.h |    5 +
 3 files changed, 149 insertions(+), 7 deletions(-)

diff --git a/arch/arm/mach-omap2/clock34xx_data.c b/arch/arm/mach-omap2/clock34xx_data.c
index 8be3eda..f58c895 100644
--- a/arch/arm/mach-omap2/clock34xx_data.c
+++ b/arch/arm/mach-omap2/clock34xx_data.c
@@ -237,6 +237,42 @@ static const struct clksel_rate div16_dpll_rates[] = {
 	{ .div = 0 }
 };
 
+static const struct clksel_rate div32_dpll4_rates_3630[] = {
+	{ .div = 1, .val = 1, .flags = RATE_IN_36XX | DEFAULT_RATE },
+	{ .div = 2, .val = 2, .flags = RATE_IN_36XX },
+	{ .div = 3, .val = 3, .flags = RATE_IN_36XX },
+	{ .div = 4, .val = 4, .flags = RATE_IN_36XX },
+	{ .div = 5, .val = 5, .flags = RATE_IN_36XX },
+	{ .div = 6, .val = 6, .flags = RATE_IN_36XX },
+	{ .div = 7, .val = 7, .flags = RATE_IN_36XX },
+	{ .div = 8, .val = 8, .flags = RATE_IN_36XX },
+	{ .div = 9, .val = 9, .flags = RATE_IN_36XX },
+	{ .div = 10, .val = 10, .flags = RATE_IN_36XX },
+	{ .div = 11, .val = 11, .flags = RATE_IN_36XX },
+	{ .div = 12, .val = 12, .flags = RATE_IN_36XX },
+	{ .div = 13, .val = 13, .flags = RATE_IN_36XX },
+	{ .div = 14, .val = 14, .flags = RATE_IN_36XX },
+	{ .div = 15, .val = 15, .flags = RATE_IN_36XX },
+	{ .div = 16, .val = 16, .flags = RATE_IN_36XX },
+	{ .div = 17, .val = 17, .flags = RATE_IN_36XX },
+	{ .div = 18, .val = 18, .flags = RATE_IN_36XX },
+	{ .div = 19, .val = 19, .flags = RATE_IN_36XX },
+	{ .div = 20, .val = 20, .flags = RATE_IN_36XX },
+	{ .div = 21, .val = 21, .flags = RATE_IN_36XX },
+	{ .div = 22, .val = 22, .flags = RATE_IN_36XX },
+	{ .div = 23, .val = 23, .flags = RATE_IN_36XX },
+	{ .div = 24, .val = 24, .flags = RATE_IN_36XX },
+	{ .div = 25, .val = 25, .flags = RATE_IN_36XX },
+	{ .div = 26, .val = 26, .flags = RATE_IN_36XX },
+	{ .div = 27, .val = 27, .flags = RATE_IN_36XX },
+	{ .div = 28, .val = 28, .flags = RATE_IN_36XX },
+	{ .div = 29, .val = 29, .flags = RATE_IN_36XX },
+	{ .div = 30, .val = 30, .flags = RATE_IN_36XX },
+	{ .div = 31, .val = 31, .flags = RATE_IN_36XX },
+	{ .div = 32, .val = 32, .flags = RATE_IN_36XX },
+	{ .div = 0 }
+};
+
 /* DPLL1 */
 /* MPU clock source */
 /* Type: DPLL */
@@ -606,8 +642,15 @@ static const struct clksel div16_dpll4_clksel[] = {
 	{ .parent = NULL }
 };
 
+static const struct clksel div32_dpll4_clksel[] = {
+	{ .parent = &dpll4_ck, .rates = div32_dpll4_rates_3630 },
+	{ .parent = NULL }
+};
+
 /* This virtual clock is the source for dpll4_m2x2_ck */
-static struct clk dpll4_m2_ck = {
+static struct clk dpll4_m2_ck;
+
+static struct clk dpll4_m2_ck_34xx __initdata = {
 	.name		= "dpll4_m2_ck",
 	.ops		= &clkops_null,
 	.parent		= &dpll4_ck,
@@ -619,6 +662,18 @@ static struct clk dpll4_m2_ck = {
 	.recalc		= &omap2_clksel_recalc,
 };
 
+static struct clk dpll4_m2_ck_3630 __initdata  = {
+	.name		= "dpll4_m2_ck",
+	.ops		= &clkops_null,
+	.parent		= &dpll4_ck,
+	.init		= &omap2_init_clksel_parent,
+	.clksel_reg	= OMAP_CM_REGADDR(PLL_MOD, OMAP3430_CM_CLKSEL3),
+	.clksel_mask	= OMAP3630_DIV_96M_MASK,
+	.clksel		= div32_dpll4_clksel,
+	.clkdm_name	= "dpll4_clkdm",
+	.recalc		= &omap2_clksel_recalc,
+};
+
 /* The PWRDN bit is apparently only available on 3430ES2 and above */
 static struct clk dpll4_m2x2_ck = {
 	.name		= "dpll4_m2x2_ck",
@@ -679,7 +734,9 @@ static struct clk omap_96m_fck = {
 };
 
 /* This virtual clock is the source for dpll4_m3x2_ck */
-static struct clk dpll4_m3_ck = {
+static struct clk dpll4_m3_ck;
+
+static struct clk dpll4_m3_ck_34xx __initdata = {
 	.name		= "dpll4_m3_ck",
 	.ops		= &clkops_null,
 	.parent		= &dpll4_ck,
@@ -691,6 +748,18 @@ static struct clk dpll4_m3_ck = {
 	.recalc		= &omap2_clksel_recalc,
 };
 
+static struct clk dpll4_m3_ck_3630 __initdata = {
+	.name		= "dpll4_m3_ck",
+	.ops		= &clkops_null,
+	.parent		= &dpll4_ck,
+	.init		= &omap2_init_clksel_parent,
+	.clksel_reg	= OMAP_CM_REGADDR(OMAP3430_DSS_MOD, CM_CLKSEL),
+	.clksel_mask	= OMAP3630_CLKSEL_TV_MASK,
+	.clksel		= div32_dpll4_clksel,
+	.clkdm_name	= "dpll4_clkdm",
+	.recalc		= &omap2_clksel_recalc,
+};
+
 /* The PWRDN bit is apparently only available on 3430ES2 and above */
 static struct clk dpll4_m3x2_ck = {
 	.name		= "dpll4_m3x2_ck",
@@ -764,7 +833,9 @@ static struct clk omap_12m_fck = {
 };
 
 /* This virstual clock is the source for dpll4_m4x2_ck */
-static struct clk dpll4_m4_ck = {
+static struct clk dpll4_m4_ck;
+
+static struct clk dpll4_m4_ck_34xx __initdata = {
 	.name		= "dpll4_m4_ck",
 	.ops		= &clkops_null,
 	.parent		= &dpll4_ck,
@@ -778,6 +849,20 @@ static struct clk dpll4_m4_ck = {
 	.round_rate	= &omap2_clksel_round_rate,
 };
 
+static struct clk dpll4_m4_ck_3630 __initdata = {
+	.name		= "dpll4_m4_ck",
+	.ops		= &clkops_null,
+	.parent		= &dpll4_ck,
+	.init		= &omap2_init_clksel_parent,
+	.clksel_reg	= OMAP_CM_REGADDR(OMAP3430_DSS_MOD, CM_CLKSEL),
+	.clksel_mask	= OMAP3630_CLKSEL_DSS1_MASK,
+	.clksel		= div32_dpll4_clksel,
+	.clkdm_name	= "dpll4_clkdm",
+	.recalc		= &omap2_clksel_recalc,
+	.set_rate	= &omap2_clksel_set_rate,
+	.round_rate	= &omap2_clksel_round_rate,
+};
+
 /* The PWRDN bit is apparently only available on 3430ES2 and above */
 static struct clk dpll4_m4x2_ck = {
 	.name		= "dpll4_m4x2_ck",
@@ -791,7 +876,9 @@ static struct clk dpll4_m4x2_ck = {
 };
 
 /* This virtual clock is the source for dpll4_m5x2_ck */
-static struct clk dpll4_m5_ck = {
+static struct clk dpll4_m5_ck;
+
+static struct clk dpll4_m5_ck_34xx __initdata = {
 	.name		= "dpll4_m5_ck",
 	.ops		= &clkops_null,
 	.parent		= &dpll4_ck,
@@ -805,6 +892,18 @@ static struct clk dpll4_m5_ck = {
 	.recalc		= &omap2_clksel_recalc,
 };
 
+static struct clk dpll4_m5_ck_3630 __initdata = {
+	.name		= "dpll4_m5_ck",
+	.ops		= &clkops_null,
+	.parent		= &dpll4_ck,
+	.init		= &omap2_init_clksel_parent,
+	.clksel_reg	= OMAP_CM_REGADDR(OMAP3430_CAM_MOD, CM_CLKSEL),
+	.clksel_mask	= OMAP3630_CLKSEL_CAM_MASK,
+	.clksel		= div32_dpll4_clksel,
+	.clkdm_name	= "dpll4_clkdm",
+	.recalc		= &omap2_clksel_recalc,
+};
+
 /* The PWRDN bit is apparently only available on 3430ES2 and above */
 static struct clk dpll4_m5x2_ck = {
 	.name		= "dpll4_m5x2_ck",
@@ -818,7 +917,9 @@ static struct clk dpll4_m5x2_ck = {
 };
 
 /* This virtual clock is the source for dpll4_m6x2_ck */
-static struct clk dpll4_m6_ck = {
+static struct clk dpll4_m6_ck;
+
+static struct clk dpll4_m6_ck_34xx __initdata = {
 	.name		= "dpll4_m6_ck",
 	.ops		= &clkops_null,
 	.parent		= &dpll4_ck,
@@ -830,6 +931,18 @@ static struct clk dpll4_m6_ck = {
 	.recalc		= &omap2_clksel_recalc,
 };
 
+static struct clk dpll4_m6_ck_3630 __initdata = {
+	.name		= "dpll4_m6_ck",
+	.ops		= &clkops_null,
+	.parent		= &dpll4_ck,
+	.init		= &omap2_init_clksel_parent,
+	.clksel_reg	= OMAP_CM_REGADDR(OMAP3430_EMU_MOD, CM_CLKSEL1),
+	.clksel_mask	= OMAP3630_DIV_DPLL4_MASK,
+	.clksel		= div32_dpll4_clksel,
+	.clkdm_name	= "dpll4_clkdm",
+	.recalc		= &omap2_clksel_recalc,
+};
+
 /* The PWRDN bit is apparently only available on 3430ES2 and above */
 static struct clk dpll4_m6x2_ck = {
 	.name		= "dpll4_m6x2_ck",
@@ -3384,6 +3497,19 @@ int __init omap3xxx_clk_init(void)
 	}
 
 	if (cpu_is_omap3630()) {
+		cpu_mask |= RATE_IN_36XX;
+		cpu_clkflg |= CK_36XX;
+
+		/*
+		 * XXX This type of dynamic rewriting of the clock tree is
+		 * deprecated and should be revised soon.
+		 */
+		dpll4_m2_ck = dpll4_m2_ck_3630;
+		dpll4_m3_ck = dpll4_m3_ck_3630;
+		dpll4_m4_ck = dpll4_m4_ck_3630;
+		dpll4_m5_ck = dpll4_m5_ck_3630;
+		dpll4_m6_ck = dpll4_m6_ck_3630;
+
 		/*
 		 * For 3630: override clkops_omap2_dflt_wait for the
 		 * clocks affected from PWRDN reset Limitation
@@ -3400,6 +3526,16 @@ int __init omap3xxx_clk_init(void)
 				&clkops_omap36xx_pwrdn_with_hsdiv_wait_restore;
 		dpll4_m6x2_ck.ops =
 				&clkops_omap36xx_pwrdn_with_hsdiv_wait_restore;
+	} else {
+		/*
+		 * XXX This type of dynamic rewriting of the clock tree is
+		 * deprecated and should be revised soon.
+		 */
+		dpll4_m2_ck = dpll4_m2_ck_34xx;
+		dpll4_m3_ck = dpll4_m3_ck_34xx;
+		dpll4_m4_ck = dpll4_m4_ck_34xx;
+		dpll4_m5_ck = dpll4_m5_ck_34xx;
+		dpll4_m6_ck = dpll4_m6_ck_34xx;
 	}
 
 	if (cpu_is_omap3630())
diff --git a/arch/arm/mach-omap2/cm-regbits-34xx.h b/arch/arm/mach-omap2/cm-regbits-34xx.h
index 29cd13b..e6a724c 100644
--- a/arch/arm/mach-omap2/cm-regbits-34xx.h
+++ b/arch/arm/mach-omap2/cm-regbits-34xx.h
@@ -542,6 +542,7 @@
 /* CM_CLKSEL3_PLL */
 #define OMAP3430_DIV_96M_SHIFT				0
 #define OMAP3430_DIV_96M_MASK				(0x1f << 0)
+#define OMAP3630_DIV_96M_MASK				(0x3f << 0)
 
 /* CM_CLKSEL4_PLL */
 #define OMAP3430ES2_PERIPH2_DPLL_MULT_SHIFT		8
@@ -588,8 +589,10 @@
 /* CM_CLKSEL_DSS */
 #define OMAP3430_CLKSEL_TV_SHIFT			8
 #define OMAP3430_CLKSEL_TV_MASK				(0x1f << 8)
+#define OMAP3630_CLKSEL_TV_MASK				(0x3f << 8)
 #define OMAP3430_CLKSEL_DSS1_SHIFT			0
 #define OMAP3430_CLKSEL_DSS1_MASK			(0x1f << 0)
+#define OMAP3630_CLKSEL_DSS1_MASK			(0x3f << 0)
 
 /* CM_SLEEPDEP_DSS specific bits */
 
@@ -617,6 +620,7 @@
 /* CM_CLKSEL_CAM */
 #define OMAP3430_CLKSEL_CAM_SHIFT			0
 #define OMAP3430_CLKSEL_CAM_MASK			(0x1f << 0)
+#define OMAP3630_CLKSEL_CAM_MASK			(0x3f << 0)
 
 /* CM_SLEEPDEP_CAM specific bits */
 
@@ -712,6 +716,7 @@
 /* CM_CLKSEL1_EMU */
 #define OMAP3430_DIV_DPLL4_SHIFT			24
 #define OMAP3430_DIV_DPLL4_MASK				(0x1f << 24)
+#define OMAP3630_DIV_DPLL4_MASK				(0x3f << 24)
 #define OMAP3430_DIV_DPLL3_SHIFT			16
 #define OMAP3430_DIV_DPLL3_MASK				(0x1f << 16)
 #define OMAP3430_CLKSEL_TRACECLK_SHIFT			11
diff --git a/arch/arm/plat-omap/include/plat/clock.h b/arch/arm/plat-omap/include/plat/clock.h
index 66ebb08..62fd64f 100644
--- a/arch/arm/plat-omap/include/plat/clock.h
+++ b/arch/arm/plat-omap/include/plat/clock.h
@@ -169,8 +169,9 @@ extern const struct clkops clkops_null;
 #define RATE_IN_242X		(1 << 1)
 #define RATE_IN_243X		(1 << 2)
 #define RATE_IN_343X		(1 << 3)	/* rates common to all 343X */
-#define RATE_IN_3430ES2		(1 << 4)	/* 3430ES2 rates only */
-#define RATE_IN_4430            (1 << 5)
+#define RATE_IN_3430ES2	(1 << 4)	/* 3430ES2 rates only */
+#define RATE_IN_36XX		(1 << 5)
+#define RATE_IN_4430		(1 << 6)
 
 #define RATE_IN_24XX		(RATE_IN_242X | RATE_IN_243X)
 

[PATCH 19/19] OMAP3 clock: add support for 192Mhz DPLL4M2 output

[Paul Walmsley]

From: Vishwanath BS <vishwanath.bs@ti.com>

In 3630, DPLL4M2 output can be 96MHz or 192MHz (for SGX to run at
192). This patch has changes to support this feature. 96MHz clock is
generated by dividing 192Mhz clock by 2 using CM_CLKSEL_CORE register.
SGX can select Core Clock, 192MHz clock or CM_96M_FCLK as it's
functional clock. In summary changes done are:
1. Added a feature called omap3_has_192mhz_clk and enabled for 3630
2. Added a new clock node called omap_192m_alwon_ck
3. Made omap_96m_alwon_fck to derive its clock from omap_192m_alwon_ck

Signed-off-by: Vishwanath BS <Vishwanath.bs@ti.com>
[paul at pwsan.com: fixed whitespace]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/clock34xx_data.c  |   66 +++++++++++++++++++++++++++++----
 arch/arm/mach-omap2/cm-regbits-34xx.h |    2 +
 arch/arm/mach-omap2/id.c              |    3 ++
 arch/arm/plat-omap/include/plat/cpu.h |    2 +
 4 files changed, 65 insertions(+), 8 deletions(-)

diff --git a/arch/arm/mach-omap2/clock34xx_data.c b/arch/arm/mach-omap2/clock34xx_data.c
index f58c895..972a90a 100644
--- a/arch/arm/mach-omap2/clock34xx_data.c
+++ b/arch/arm/mach-omap2/clock34xx_data.c
@@ -692,18 +692,24 @@ static struct clk dpll4_m2x2_ck = {
  * 96M_ALWON_FCLK (called "omap_96m_alwon_fck" below) and
  * CM_96K_(F)CLK.
  */
-static struct clk omap_96m_alwon_fck = {
-	.name		= "omap_96m_alwon_fck",
+
+/* Adding 192MHz Clock node needed by SGX */
+static struct clk omap_192m_alwon_fck = {
+	.name		= "omap_192m_alwon_fck",
 	.ops		= &clkops_null,
 	.parent		= &dpll4_m2x2_ck,
 	.recalc		= &followparent_recalc,
 };
 
-static struct clk cm_96m_fck = {
-	.name		= "cm_96m_fck",
-	.ops		= &clkops_null,
-	.parent		= &omap_96m_alwon_fck,
-	.recalc		= &followparent_recalc,
+static const struct clksel_rate omap_96m_alwon_fck_rates[] = {
+	{ .div = 1, .val = 1, .flags = RATE_IN_36XX },
+	{ .div = 2, .val = 2, .flags = RATE_IN_36XX | DEFAULT_RATE },
+	{ .div = 0 }
+};
+
+static const struct clksel omap_96m_alwon_fck_clksel[] = {
+	{ .parent = &omap_192m_alwon_fck, .rates = omap_96m_alwon_fck_rates },
+	{ .parent = NULL }
 };
 
 static const struct clksel_rate omap_96m_dpll_rates[] = {
@@ -716,6 +722,31 @@ static const struct clksel_rate omap_96m_sys_rates[] = {
 	{ .div = 0 }
 };
 
+static struct clk omap_96m_alwon_fck = {
+	.name		= "omap_96m_alwon_fck",
+	.ops		= &clkops_null,
+	.parent		= &dpll4_m2x2_ck,
+	.recalc		= &followparent_recalc,
+};
+
+static struct clk omap_96m_alwon_fck_3630 = {
+	.name		= "omap_96m_alwon_fck",
+	.parent		= &omap_192m_alwon_fck,
+	.init		= &omap2_init_clksel_parent,
+	.ops		= &clkops_null,
+	.recalc		= &omap2_clksel_recalc,
+	.clksel_reg	= OMAP_CM_REGADDR(CORE_MOD, CM_CLKSEL),
+	.clksel_mask	= OMAP3630_CLKSEL_96M_MASK,
+	.clksel		= omap_96m_alwon_fck_clksel
+};
+
+static struct clk cm_96m_fck = {
+	.name		= "cm_96m_fck",
+	.ops		= &clkops_null,
+	.parent		= &omap_96m_alwon_fck,
+	.recalc		= &followparent_recalc,
+};
+
 static const struct clksel omap_96m_fck_clksel[] = {
 	{ .parent = &cm_96m_fck, .rates = omap_96m_dpll_rates },
 	{ .parent = &sys_ck,	 .rates = omap_96m_sys_rates },
@@ -1304,12 +1335,24 @@ static struct clk gfx_cg2_ck = {
 /* SGX power domain - 3430ES2 only */
 
 static const struct clksel_rate sgx_core_rates[] = {
+	{ .div = 2, .val = 5, .flags = RATE_IN_36XX },
 	{ .div = 3, .val = 0, .flags = RATE_IN_343X | DEFAULT_RATE },
 	{ .div = 4, .val = 1, .flags = RATE_IN_343X },
 	{ .div = 6, .val = 2, .flags = RATE_IN_343X },
 	{ .div = 0 },
 };
 
+static const struct clksel_rate sgx_192m_rates[] = {
+	{ .div = 1,  .val = 4, .flags = RATE_IN_36XX | DEFAULT_RATE },
+	{ .div = 0 },
+};
+
+static const struct clksel_rate sgx_corex2_rates[] = {
+	{ .div = 3, .val = 6, .flags = RATE_IN_36XX | DEFAULT_RATE },
+	{ .div = 5, .val = 7, .flags = RATE_IN_36XX },
+	{ .div = 0 },
+};
+
 static const struct clksel_rate sgx_96m_rates[] = {
 	{ .div = 1,  .val = 3, .flags = RATE_IN_343X | DEFAULT_RATE },
 	{ .div = 0 },
@@ -1318,7 +1361,9 @@ static const struct clksel_rate sgx_96m_rates[] = {
 static const struct clksel sgx_clksel[] = {
 	{ .parent = &core_ck,	 .rates = sgx_core_rates },
 	{ .parent = &cm_96m_fck, .rates = sgx_96m_rates },
-	{ .parent = NULL },
+	{ .parent = &omap_192m_alwon_fck, .rates = sgx_192m_rates },
+	{ .parent = &corex2_fck, .rates = sgx_corex2_rates },
+	{ .parent = NULL }
 };
 
 static struct clk sgx_fck = {
@@ -1332,6 +1377,8 @@ static struct clk sgx_fck = {
 	.clksel		= sgx_clksel,
 	.clkdm_name	= "sgx_clkdm",
 	.recalc		= &omap2_clksel_recalc,
+	.set_rate	= &omap2_clksel_set_rate,
+	.round_rate	= &omap2_clksel_round_rate
 };
 
 static struct clk sgx_ick = {
@@ -3262,6 +3309,7 @@ static struct omap_clk omap3xxx_clks[] = {
 	CLK("etb",	"emu_core_alwon_ck", &emu_core_alwon_ck, CK_3XXX),
 	CLK(NULL,	"dpll4_ck",	&dpll4_ck,	CK_3XXX),
 	CLK(NULL,	"dpll4_x2_ck",	&dpll4_x2_ck,	CK_3XXX),
+	CLK(NULL,	"omap_192m_alwon_fck", &omap_192m_alwon_fck, CK_36XX),
 	CLK(NULL,	"omap_96m_alwon_fck", &omap_96m_alwon_fck, CK_3XXX),
 	CLK(NULL,	"omap_96m_fck",	&omap_96m_fck,	CK_3XXX),
 	CLK(NULL,	"cm_96m_fck",	&cm_96m_fck,	CK_3XXX),
@@ -3495,6 +3543,8 @@ int __init omap3xxx_clk_init(void)
 			cpu_clkflg |= CK_3430ES2;
 		}
 	}
+	if (omap3_has_192mhz_clk())
+		omap_96m_alwon_fck = omap_96m_alwon_fck_3630;
 
 	if (cpu_is_omap3630()) {
 		cpu_mask |= RATE_IN_36XX;
diff --git a/arch/arm/mach-omap2/cm-regbits-34xx.h b/arch/arm/mach-omap2/cm-regbits-34xx.h
index e6a724c..a3a3ca0 100644
--- a/arch/arm/mach-omap2/cm-regbits-34xx.h
+++ b/arch/arm/mach-omap2/cm-regbits-34xx.h
@@ -346,6 +346,8 @@
 #define OMAP3430_CLKSEL_L4_MASK				(0x3 << 2)
 #define OMAP3430_CLKSEL_L3_SHIFT			0
 #define OMAP3430_CLKSEL_L3_MASK				(0x3 << 0)
+#define OMAP3630_CLKSEL_96M_SHIFT			12
+#define OMAP3630_CLKSEL_96M_MASK			(0x3 << 12)
 
 /* CM_CLKSTCTRL_CORE */
 #define OMAP3430ES1_CLKTRCTRL_D2D_SHIFT			4
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index 9e7c4ae..d2897a6 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -175,6 +175,8 @@ void __init omap3_check_features(void)
 	OMAP3_CHECK_FEATURE(status, SGX);
 	OMAP3_CHECK_FEATURE(status, NEON);
 	OMAP3_CHECK_FEATURE(status, ISP);
+	if (cpu_is_omap3630())
+		omap3_features |= OMAP3_HAS_192MHZ_CLK;
 
 	/*
 	 * TODO: Get additional info (where applicable)
@@ -359,6 +361,7 @@ void __init omap3_cpuinfo(void)
 	OMAP3_SHOW_FEATURE(sgx);
 	OMAP3_SHOW_FEATURE(neon);
 	OMAP3_SHOW_FEATURE(isp);
+	OMAP3_SHOW_FEATURE(192mhz_clk);
 
 	printk(")\n");
 }
diff --git a/arch/arm/plat-omap/include/plat/cpu.h b/arch/arm/plat-omap/include/plat/cpu.h
index ccd78fd..3959497 100644
--- a/arch/arm/plat-omap/include/plat/cpu.h
+++ b/arch/arm/plat-omap/include/plat/cpu.h
@@ -507,6 +507,7 @@ extern u32 omap3_features;
 #define OMAP3_HAS_SGX			BIT(2)
 #define OMAP3_HAS_NEON			BIT(3)
 #define OMAP3_HAS_ISP			BIT(4)
+#define OMAP3_HAS_192MHZ_CLK		BIT(5)
 
 #define OMAP3_HAS_FEATURE(feat,flag)			\
 static inline unsigned int omap3_has_ ##feat(void)	\
@@ -519,5 +520,6 @@ OMAP3_HAS_FEATURE(sgx, SGX)
 OMAP3_HAS_FEATURE(iva, IVA)
 OMAP3_HAS_FEATURE(neon, NEON)
 OMAP3_HAS_FEATURE(isp, ISP)
+OMAP3_HAS_FEATURE(192mhz_clk, 192MHZ_CLK)
 
 #endif