* [PATCH 0/2] QE clock source improvements
@ 2007-10-10 22:18 Timur Tabi
2007-10-10 22:31 ` Timur Tabi
0 siblings, 1 reply; 6+ messages in thread
From: Timur Tabi @ 2007-10-10 22:18 UTC (permalink / raw)
To: galak, linuxppc-dev, netdev
This patch set adds a new property to make specifying QE clock sources
easier, adds a function to help parse the property, updates some other
functions to use an enum instead of an integer, and updates the ucc_geth
driver to take advantage of all this.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 0/2] QE clock source improvements
2007-10-10 22:18 Timur Tabi
@ 2007-10-10 22:31 ` Timur Tabi
0 siblings, 0 replies; 6+ messages in thread
From: Timur Tabi @ 2007-10-10 22:31 UTC (permalink / raw)
To: Timur Tabi; +Cc: linuxppc-dev, netdev
Sorry, please ignore this set. Something got screwed up with the patches.
I'm going to resend.
Timur Tabi wrote:
> This patch set adds a new property to make specifying QE clock sources
> easier, adds a function to help parse the property, updates some other
> functions to use an enum instead of an integer, and updates the ucc_geth
> driver to take advantage of all this.
>
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-dev
>
--
Timur Tabi
Linux Kernel Developer @ Freescale
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 0/2] QE clock source improvements
@ 2007-10-10 22:37 Timur Tabi
2007-10-10 22:37 ` [PATCH 1/2] qe: add function qe_clock_source Timur Tabi
0 siblings, 1 reply; 6+ messages in thread
From: Timur Tabi @ 2007-10-10 22:37 UTC (permalink / raw)
To: galak, linuxppc-dev, netdev
(Replaces all previous versions of this patch)
This patch set adds a new property to make specifying QE clock sources
easier, adds a function to help parse the property, updates some other
functions to use an enum instead of an integer, and updates the ucc_geth
driver to take advantage of all this.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 1/2] qe: add function qe_clock_source
2007-10-10 22:37 [PATCH 0/2] QE clock source improvements Timur Tabi
@ 2007-10-10 22:37 ` Timur Tabi
2007-10-10 22:37 ` [PATCH 2/2] ucc_geth: use rx-clock-name and tx-clock-name device tree properties Timur Tabi
0 siblings, 1 reply; 6+ messages in thread
From: Timur Tabi @ 2007-10-10 22:37 UTC (permalink / raw)
To: galak, linuxppc-dev, netdev; +Cc: Timur Tabi
Add function qe_clock_source() which takes a string containing the name of a
QE clock source (as is typically found in device trees) and returns the
matching enum qe_clock value.
Update booting-without-of.txt to indicate that the UCC properties rx-clock
and tx-clock are deprecated and replaced with rx-clock-name and tx-clock-name,
which use strings instead of numbers to indicate QE clock sources.
Update qe_setbrg() to take an enum qe_clock instead of an integer as its
first paramter.
Signed-off-by: Timur Tabi <timur@freescale.com>
---
This patch applies to Kumar's for-2.6.24 branch.
Documentation/powerpc/booting-without-of.txt | 13 ++++
arch/powerpc/sysdev/qe_lib/qe.c | 41 ++++++++++-
include/asm-powerpc/qe.h | 95 +++++++++++++-------------
3 files changed, 99 insertions(+), 50 deletions(-)
diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index 7a6c5f2..d8306ee 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -1615,6 +1615,19 @@ platforms are moved over to use the flattened-device-tree model.
- interrupt-parent : the phandle for the interrupt controller that
services interrupts for this device.
- pio-handle : The phandle for the Parallel I/O port configuration.
+ - rx-clock-name: the UCC receive clock source
+ "none": clock source is disabled
+ "brg1" through "brg16": clock source is BRG1-BRG16, respectively
+ "clk1" through "clk24": clock source is CLK1-CLK24, respectively
+ - tx-clock-name: the UCC transmit clock source
+ "none": clock source is disabled
+ "brg1" through "brg16": clock source is BRG1-BRG16, respectively
+ "clk1" through "clk24": clock source is CLK1-CLK24, respectively
+ The following two properties are deprecated. rx-clock has been replaced
+ with rx-clock-name, and tx-clock has been replaced with tx-clock-name.
+ Drivers that currently use the deprecated properties should continue to
+ do so, in order to support older device trees, but they should be updated
+ to check for the new properties first.
- rx-clock : represents the UCC receive clock source.
0x00 : clock source is disabled;
0x1~0x10 : clock source is BRG1~BRG16 respectively;
diff --git a/arch/powerpc/sysdev/qe_lib/qe.c b/arch/powerpc/sysdev/qe_lib/qe.c
index 3d57d38..8551e74 100644
--- a/arch/powerpc/sysdev/qe_lib/qe.c
+++ b/arch/powerpc/sysdev/qe_lib/qe.c
@@ -167,7 +167,7 @@ unsigned int get_brg_clk(void)
/* Program the BRG to the given sampling rate and multiplier
*
- * @brg: the BRG, 1-16
+ * @brg: the BRG, QE_BRG1 - QE_BRG16
* @rate: the desired sampling rate
* @multiplier: corresponds to the value programmed in GUMR_L[RDCR] or
* GUMR_L[TDCR]. E.g., if this BRG is the RX clock, and GUMR_L[RDCR]=01,
@@ -175,11 +175,14 @@ unsigned int get_brg_clk(void)
*
* Also note that the value programmed into the BRGC register must be even.
*/
-void qe_setbrg(unsigned int brg, unsigned int rate, unsigned int multiplier)
+void qe_setbrg(enum qe_clock brg, unsigned int rate, unsigned int multiplier)
{
u32 divisor, tempval;
u32 div16 = 0;
+ if ((brg < QE_BRG1) || (brg > QE_BRG16))
+ return;
+
divisor = get_brg_clk() / (rate * multiplier);
if (divisor > QE_BRGC_DIVISOR_MAX + 1) {
@@ -196,8 +199,40 @@ void qe_setbrg(unsigned int brg, unsigned int rate, unsigned int multiplier)
tempval = ((divisor - 1) << QE_BRGC_DIVISOR_SHIFT) |
QE_BRGC_ENABLE | div16;
- out_be32(&qe_immr->brg.brgc[brg - 1], tempval);
+ out_be32(&qe_immr->brg.brgc[brg - QE_BRG1], tempval);
+}
+
+/* Convert a string to a QE clock source enum
+ *
+ * This function takes a string, typically from a property in the device
+ * tree, and returns the corresponding "enum qe_clock" value.
+*/
+enum qe_clock qe_clock_source(const char *source)
+{
+ unsigned int i;
+
+ if (strcasecmp(source, "none") == 0)
+ return QE_CLK_NONE;
+
+ if (strncasecmp(source, "brg", 3) == 0) {
+ i = simple_strtoul(source + 3, NULL, 10);
+ if ((i >= 1) && (i <= 16))
+ return (QE_BRG1 - 1) + i;
+ else
+ return QE_CLK_DUMMY;
+ }
+
+ if (strncasecmp(source, "clk", 3) == 0) {
+ i = simple_strtoul(source + 3, NULL, 10);
+ if ((i >= 1) && (i <= 24))
+ return (QE_CLK1 - 1) + i;
+ else
+ return QE_CLK_DUMMY;
+ }
+
+ return QE_CLK_DUMMY;
}
+EXPORT_SYMBOL(qe_clock_source);
/* Initialize SNUMs (thread serial numbers) according to
* QE Module Control chapter, SNUM table
diff --git a/include/asm-powerpc/qe.h b/include/asm-powerpc/qe.h
index 0dabe46..81403ee 100644
--- a/include/asm-powerpc/qe.h
+++ b/include/asm-powerpc/qe.h
@@ -28,6 +28,52 @@
#define MEM_PART_SECONDARY 1
#define MEM_PART_MURAM 2
+/* Clocks and BRGs */
+enum qe_clock {
+ QE_CLK_NONE = 0,
+ QE_BRG1, /* Baud Rate Generator 1 */
+ QE_BRG2, /* Baud Rate Generator 2 */
+ QE_BRG3, /* Baud Rate Generator 3 */
+ QE_BRG4, /* Baud Rate Generator 4 */
+ QE_BRG5, /* Baud Rate Generator 5 */
+ QE_BRG6, /* Baud Rate Generator 6 */
+ QE_BRG7, /* Baud Rate Generator 7 */
+ QE_BRG8, /* Baud Rate Generator 8 */
+ QE_BRG9, /* Baud Rate Generator 9 */
+ QE_BRG10, /* Baud Rate Generator 10 */
+ QE_BRG11, /* Baud Rate Generator 11 */
+ QE_BRG12, /* Baud Rate Generator 12 */
+ QE_BRG13, /* Baud Rate Generator 13 */
+ QE_BRG14, /* Baud Rate Generator 14 */
+ QE_BRG15, /* Baud Rate Generator 15 */
+ QE_BRG16, /* Baud Rate Generator 16 */
+ QE_CLK1, /* Clock 1 */
+ QE_CLK2, /* Clock 2 */
+ QE_CLK3, /* Clock 3 */
+ QE_CLK4, /* Clock 4 */
+ QE_CLK5, /* Clock 5 */
+ QE_CLK6, /* Clock 6 */
+ QE_CLK7, /* Clock 7 */
+ QE_CLK8, /* Clock 8 */
+ QE_CLK9, /* Clock 9 */
+ QE_CLK10, /* Clock 10 */
+ QE_CLK11, /* Clock 11 */
+ QE_CLK12, /* Clock 12 */
+ QE_CLK13, /* Clock 13 */
+ QE_CLK14, /* Clock 14 */
+ QE_CLK15, /* Clock 15 */
+ QE_CLK16, /* Clock 16 */
+ QE_CLK17, /* Clock 17 */
+ QE_CLK18, /* Clock 18 */
+ QE_CLK19, /* Clock 19 */
+ QE_CLK20, /* Clock 20 */
+ QE_CLK21, /* Clock 21 */
+ QE_CLK22, /* Clock 22 */
+ QE_CLK23, /* Clock 23 */
+ QE_CLK24, /* Clock 24 */
+ QE_CLK_DUMMY
+};
+
/* Export QE common operations */
extern void qe_reset(void);
extern int par_io_init(struct device_node *np);
@@ -38,7 +84,8 @@ extern int par_io_data_set(u8 port, u8 pin, u8 val);
/* QE internal API */
int qe_issue_cmd(u32 cmd, u32 device, u8 mcn_protocol, u32 cmd_input);
-void qe_setbrg(unsigned int brg, unsigned int rate, unsigned int multiplier);
+enum qe_clock qe_clock_source(const char *source);
+void qe_setbrg(enum qe_clock brg, unsigned int rate, unsigned int multiplier);
int qe_get_snum(void);
void qe_put_snum(u8 snum);
unsigned long qe_muram_alloc(int size, int align);
@@ -129,52 +176,6 @@ enum comm_dir {
COMM_DIR_RX_AND_TX = 3
};
-/* Clocks and BRGs */
-enum qe_clock {
- QE_CLK_NONE = 0,
- QE_BRG1, /* Baud Rate Generator 1 */
- QE_BRG2, /* Baud Rate Generator 2 */
- QE_BRG3, /* Baud Rate Generator 3 */
- QE_BRG4, /* Baud Rate Generator 4 */
- QE_BRG5, /* Baud Rate Generator 5 */
- QE_BRG6, /* Baud Rate Generator 6 */
- QE_BRG7, /* Baud Rate Generator 7 */
- QE_BRG8, /* Baud Rate Generator 8 */
- QE_BRG9, /* Baud Rate Generator 9 */
- QE_BRG10, /* Baud Rate Generator 10 */
- QE_BRG11, /* Baud Rate Generator 11 */
- QE_BRG12, /* Baud Rate Generator 12 */
- QE_BRG13, /* Baud Rate Generator 13 */
- QE_BRG14, /* Baud Rate Generator 14 */
- QE_BRG15, /* Baud Rate Generator 15 */
- QE_BRG16, /* Baud Rate Generator 16 */
- QE_CLK1, /* Clock 1 */
- QE_CLK2, /* Clock 2 */
- QE_CLK3, /* Clock 3 */
- QE_CLK4, /* Clock 4 */
- QE_CLK5, /* Clock 5 */
- QE_CLK6, /* Clock 6 */
- QE_CLK7, /* Clock 7 */
- QE_CLK8, /* Clock 8 */
- QE_CLK9, /* Clock 9 */
- QE_CLK10, /* Clock 10 */
- QE_CLK11, /* Clock 11 */
- QE_CLK12, /* Clock 12 */
- QE_CLK13, /* Clock 13 */
- QE_CLK14, /* Clock 14 */
- QE_CLK15, /* Clock 15 */
- QE_CLK16, /* Clock 16 */
- QE_CLK17, /* Clock 17 */
- QE_CLK18, /* Clock 18 */
- QE_CLK19, /* Clock 19 */
- QE_CLK20, /* Clock 20 */
- QE_CLK21, /* Clock 21 */
- QE_CLK22, /* Clock 22 */
- QE_CLK23, /* Clock 23 */
- QE_CLK24, /* Clock 24 */
- QE_CLK_DUMMY,
-};
-
/* QE CMXUCR Registers.
* There are two UCCs represented in each of the four CMXUCR registers.
* These values are for the UCC in the LSBs
--
1.5.2.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH 2/2] ucc_geth: use rx-clock-name and tx-clock-name device tree properties
2007-10-10 22:37 ` [PATCH 1/2] qe: add function qe_clock_source Timur Tabi
@ 2007-10-10 22:37 ` Timur Tabi
0 siblings, 0 replies; 6+ messages in thread
From: Timur Tabi @ 2007-10-10 22:37 UTC (permalink / raw)
To: galak, linuxppc-dev, netdev; +Cc: Timur Tabi
This patch updates the ucc_geth device driver to check the new rx-clock-name
and tx-clock-name properties first. If present, it uses the new function
qe_clock_source() to obtain the clock source. Otherwise, it checks the
deprecated rx-clock and tx-clock properties.
The device trees for 832x, 836x, and 8568 have been updated to contain the
new property names only.
Signed-off-by: Timur Tabi <timur@freescale.com>
---
This patch applies to Kumar's for-2.6.24 branch, on top of my other patch titled
"qe: add function qe_clock_source".
arch/powerpc/boot/dts/mpc832x_mds.dts | 8 ++--
arch/powerpc/boot/dts/mpc832x_rdb.dts | 8 ++--
arch/powerpc/boot/dts/mpc836x_mds.dts | 8 ++--
arch/powerpc/boot/dts/mpc8568mds.dts | 8 ++--
drivers/net/ucc_geth.c | 55 ++++++++++++++++++++++++++++++--
5 files changed, 67 insertions(+), 20 deletions(-)
diff --git a/arch/powerpc/boot/dts/mpc832x_mds.dts b/arch/powerpc/boot/dts/mpc832x_mds.dts
index fcd333c..b57485b 100644
--- a/arch/powerpc/boot/dts/mpc832x_mds.dts
+++ b/arch/powerpc/boot/dts/mpc832x_mds.dts
@@ -217,8 +217,8 @@
*/
mac-address = [ 00 00 00 00 00 00 ];
local-mac-address = [ 00 00 00 00 00 00 ];
- rx-clock = <19>;
- tx-clock = <1a>;
+ rx-clock-name = "clk9";
+ tx-clock-name = "clk10";
phy-handle = < &phy3 >;
pio-handle = < &pio3 >;
};
@@ -238,8 +238,8 @@
*/
mac-address = [ 00 00 00 00 00 00 ];
local-mac-address = [ 00 00 00 00 00 00 ];
- rx-clock = <17>;
- tx-clock = <18>;
+ rx-clock-name = "clk7";
+ tx-clock-name = "clk8";
phy-handle = < &phy4 >;
pio-handle = < &pio4 >;
};
diff --git a/arch/powerpc/boot/dts/mpc832x_rdb.dts b/arch/powerpc/boot/dts/mpc832x_rdb.dts
index 388c8a7..e68a08b 100644
--- a/arch/powerpc/boot/dts/mpc832x_rdb.dts
+++ b/arch/powerpc/boot/dts/mpc832x_rdb.dts
@@ -202,8 +202,8 @@
*/
mac-address = [ 00 00 00 00 00 00 ];
local-mac-address = [ 00 00 00 00 00 00 ];
- rx-clock = <20>;
- tx-clock = <13>;
+ rx-clock-name = "clk16";
+ tx-clock-name = "clk3";
phy-handle = <&phy00>;
pio-handle = <&ucc2pio>;
};
@@ -223,8 +223,8 @@
*/
mac-address = [ 00 00 00 00 00 00 ];
local-mac-address = [ 00 00 00 00 00 00 ];
- rx-clock = <19>;
- tx-clock = <1a>;
+ rx-clock-name = "clk9";
+ tx-clock-name = "clk10";
phy-handle = <&phy04>;
pio-handle = <&ucc3pio>;
};
diff --git a/arch/powerpc/boot/dts/mpc836x_mds.dts b/arch/powerpc/boot/dts/mpc836x_mds.dts
index fbd1573..7a54072 100644
--- a/arch/powerpc/boot/dts/mpc836x_mds.dts
+++ b/arch/powerpc/boot/dts/mpc836x_mds.dts
@@ -245,8 +245,8 @@
*/
mac-address = [ 00 00 00 00 00 00 ];
local-mac-address = [ 00 00 00 00 00 00 ];
- rx-clock = <0>;
- tx-clock = <19>;
+ rx-clock-name = "none";
+ tx-clock-name = "clk9";
phy-handle = < &phy0 >;
phy-connection-type = "rgmii-id";
pio-handle = < &pio1 >;
@@ -267,8 +267,8 @@
*/
mac-address = [ 00 00 00 00 00 00 ];
local-mac-address = [ 00 00 00 00 00 00 ];
- rx-clock = <0>;
- tx-clock = <14>;
+ rx-clock-name = "none";
+ tx-clock-name = "clk4";
phy-handle = < &phy1 >;
phy-connection-type = "rgmii-id";
pio-handle = < &pio2 >;
diff --git a/arch/powerpc/boot/dts/mpc8568mds.dts b/arch/powerpc/boot/dts/mpc8568mds.dts
index 5439437..cf45aab 100644
--- a/arch/powerpc/boot/dts/mpc8568mds.dts
+++ b/arch/powerpc/boot/dts/mpc8568mds.dts
@@ -333,8 +333,8 @@
*/
mac-address = [ 00 00 00 00 00 00 ];
local-mac-address = [ 00 00 00 00 00 00 ];
- rx-clock = <0>;
- tx-clock = <20>;
+ rx-clock-name = "none";
+ tx-clock-name = "clk16";
pio-handle = <&pio1>;
phy-handle = <&phy0>;
phy-connection-type = "rgmii-id";
@@ -355,8 +355,8 @@
*/
mac-address = [ 00 00 00 00 00 00 ];
local-mac-address = [ 00 00 00 00 00 00 ];
- rx-clock = <0>;
- tx-clock = <20>;
+ rx-clock-name = "none";
+ tx-clock-name = "clk16";
pio-handle = <&pio2>;
phy-handle = <&phy1>;
phy-connection-type = "rgmii-id";
diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c
index 7dedc96..9308397 100644
--- a/drivers/net/ucc_geth.c
+++ b/drivers/net/ucc_geth.c
@@ -3827,6 +3827,7 @@ static int ucc_geth_probe(struct of_device* ofdev, const struct of_device_id *ma
int err, ucc_num, max_speed = 0;
const phandle *ph;
const unsigned int *prop;
+ const char *sprop;
const void *mac_addr;
phy_interface_t phy_interface;
static const int enet_to_speed[] = {
@@ -3859,10 +3860,56 @@ static int ucc_geth_probe(struct of_device* ofdev, const struct of_device_id *ma
ug_info->uf_info.ucc_num = ucc_num;
- prop = of_get_property(np, "rx-clock", NULL);
- ug_info->uf_info.rx_clock = *prop;
- prop = of_get_property(np, "tx-clock", NULL);
- ug_info->uf_info.tx_clock = *prop;
+ sprop = of_get_property(np, "rx-clock-name", NULL);
+ if (sprop) {
+ ug_info->uf_info.rx_clock = qe_clock_source(sprop);
+ if ((ug_info->uf_info.rx_clock < QE_CLK_NONE) ||
+ (ug_info->uf_info.rx_clock > QE_CLK24)) {
+ printk(KERN_ERR
+ "ucc_geth: invalid rx-clock-name property\n");
+ return -EINVAL;
+ }
+ } else {
+ prop = of_get_property(np, "rx-clock", NULL);
+ if (!prop) {
+ /* If both rx-clock-name and rx-clock are missing,
+ we want to tell people to use rx-clock-name. */
+ printk(KERN_ERR
+ "ucc_geth: missing rx-clock-name property\n");
+ return -EINVAL;
+ }
+ if ((*prop < QE_CLK_NONE) || (*prop > QE_CLK24)) {
+ printk(KERN_ERR
+ "ucc_geth: invalid rx-clock propperty\n");
+ return -EINVAL;
+ }
+ ug_info->uf_info.rx_clock = *prop;
+ }
+
+ sprop = of_get_property(np, "tx-clock-name", NULL);
+ if (sprop) {
+ ug_info->uf_info.tx_clock = qe_clock_source(sprop);
+ if ((ug_info->uf_info.tx_clock < QE_CLK_NONE) ||
+ (ug_info->uf_info.tx_clock > QE_CLK24)) {
+ printk(KERN_ERR
+ "ucc_geth: invalid tx-clock-name property\n");
+ return -EINVAL;
+ }
+ } else {
+ prop = of_get_property(np, "rx-clock", NULL);
+ if (!prop) {
+ printk(KERN_ERR
+ "ucc_geth: mising tx-clock-name property\n");
+ return -EINVAL;
+ }
+ if ((*prop < QE_CLK_NONE) || (*prop > QE_CLK24)) {
+ printk(KERN_ERR
+ "ucc_geth: invalid tx-clock property\n");
+ return -EINVAL;
+ }
+ ug_info->uf_info.tx_clock = *prop;
+ }
+
err = of_address_to_resource(np, 0, &res);
if (err)
return -EINVAL;
--
1.5.2.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH 0/2] QE clock source improvements
@ 2007-12-03 21:17 Timur Tabi
0 siblings, 0 replies; 6+ messages in thread
From: Timur Tabi @ 2007-12-03 21:17 UTC (permalink / raw)
To: netdev, linuxppc-dev, galak
This patch set adds a new property to make specifying QE clock sources
easier, adds a function to help parse the property, and updates the ucc_geth
driver to take advantage of all this.
Patch #1 is an arch/powerpc patch meant for Kumar's for-2.6.25 branch.
Patch #2 is a netdev patch, so it's either for Jeff G and/or Kumar.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2007-12-03 21:19 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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