* [PATCH v2 1/8] clk: Add __clk_mux_determine_rate_closest
2014-11-26 1:35 [PATCH v2 0/8] qcom audio clock control drivers Stephen Boyd
@ 2014-11-26 1:35 ` Stephen Boyd
2014-11-26 1:35 ` [PATCH v2 2/8] clk: divider: Make generic for usage elsewhere Stephen Boyd
` (6 subsequent siblings)
7 siblings, 0 replies; 10+ messages in thread
From: Stephen Boyd @ 2014-11-26 1:35 UTC (permalink / raw)
To: linux-arm-kernel
Some clock drivers want to find the closest rate on the input of
a mux instead of a rate that's less than or equal to the desired
rate. Add a generic mux function to support this.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/clk/clk.c | 47 +++++++++++++++++++++++++++++++++++---------
include/linux/clk-provider.h | 9 +++++++--
2 files changed, 45 insertions(+), 11 deletions(-)
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 4896ae9e23da..675f37a7329f 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -700,14 +700,20 @@ struct clk *__clk_lookup(const char *name)
return NULL;
}
-/*
- * Helper for finding best parent to provide a given frequency. This can be used
- * directly as a determine_rate callback (e.g. for a mux), or from a more
- * complex clock that may combine a mux with other operations.
- */
-long __clk_mux_determine_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *best_parent_rate,
- struct clk **best_parent_p)
+static bool mux_is_better_rate(unsigned long rate, unsigned long now,
+ unsigned long best, unsigned long flags)
+{
+ if (flags & CLK_MUX_ROUND_CLOSEST)
+ return abs(now - rate) < abs(best - rate);
+
+ return now <= rate && now > best;
+}
+
+static long
+clk_mux_determine_rate_flags(struct clk_hw *hw, unsigned long rate,
+ unsigned long *best_parent_rate,
+ struct clk **best_parent_p,
+ unsigned long flags)
{
struct clk *clk = hw->clk, *parent, *best_parent = NULL;
int i, num_parents;
@@ -735,7 +741,7 @@ long __clk_mux_determine_rate(struct clk_hw *hw, unsigned long rate,
parent_rate = __clk_round_rate(parent, rate);
else
parent_rate = __clk_get_rate(parent);
- if (parent_rate <= rate && parent_rate > best) {
+ if (mux_is_better_rate(rate, parent_rate, best, flags)) {
best_parent = parent;
best = parent_rate;
}
@@ -748,8 +754,31 @@ out:
return best;
}
+
+/*
+ * Helper for finding best parent to provide a given frequency. This can be used
+ * directly as a determine_rate callback (e.g. for a mux), or from a more
+ * complex clock that may combine a mux with other operations.
+ */
+long __clk_mux_determine_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *best_parent_rate,
+ struct clk **best_parent_p)
+{
+ return clk_mux_determine_rate_flags(hw, rate, best_parent_rate,
+ best_parent_p, 0);
+}
EXPORT_SYMBOL_GPL(__clk_mux_determine_rate);
+long __clk_mux_determine_rate_closest(struct clk_hw *hw, unsigned long rate,
+ unsigned long *best_parent_rate,
+ struct clk **best_parent_p)
+{
+ return clk_mux_determine_rate_flags(hw, rate, best_parent_rate,
+ best_parent_p,
+ CLK_MUX_ROUND_CLOSEST);
+}
+EXPORT_SYMBOL_GPL(__clk_mux_determine_rate_closest);
+
/*** clk api ***/
void __clk_unprepare(struct clk *clk)
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index be21af149f11..446faed3f79f 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -383,6 +383,8 @@ struct clk *clk_register_divider_table(struct device *dev, const char *name,
* register, and mask of mux bits are in higher 16-bit of this register.
* While setting the mux bits, higher 16-bit should also be updated to
* indicate changing mux bits.
+ * CLK_MUX_ROUND_CLOSEST - Use the parent rate that is closest to the desired
+ * frequency.
*/
struct clk_mux {
struct clk_hw hw;
@@ -397,7 +399,8 @@ struct clk_mux {
#define CLK_MUX_INDEX_ONE BIT(0)
#define CLK_MUX_INDEX_BIT BIT(1)
#define CLK_MUX_HIWORD_MASK BIT(2)
-#define CLK_MUX_READ_ONLY BIT(3) /* mux setting cannot be changed */
+#define CLK_MUX_READ_ONLY BIT(3) /* mux can't be changed */
+#define CLK_MUX_ROUND_CLOSEST BIT(4)
extern const struct clk_ops clk_mux_ops;
extern const struct clk_ops clk_mux_ro_ops;
@@ -555,7 +558,9 @@ struct clk *__clk_lookup(const char *name);
long __clk_mux_determine_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *best_parent_rate,
struct clk **best_parent_p);
-
+long __clk_mux_determine_rate_closest(struct clk_hw *hw, unsigned long rate,
+ unsigned long *best_parent_rate,
+ struct clk **best_parent_p);
/*
* FIXME clock api without lock protection
*/
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v2 2/8] clk: divider: Make generic for usage elsewhere
2014-11-26 1:35 [PATCH v2 0/8] qcom audio clock control drivers Stephen Boyd
2014-11-26 1:35 ` [PATCH v2 1/8] clk: Add __clk_mux_determine_rate_closest Stephen Boyd
@ 2014-11-26 1:35 ` Stephen Boyd
2014-11-26 1:35 ` [PATCH v2 3/8] clk: qcom: Add support for regmap divider clocks Stephen Boyd
` (5 subsequent siblings)
7 siblings, 0 replies; 10+ messages in thread
From: Stephen Boyd @ 2014-11-26 1:35 UTC (permalink / raw)
To: linux-arm-kernel
Some devices don't use mmio to interact with dividers. Split out the
logic from the register read/write parts so that we can reuse the
division logic elsewhere.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/clk/clk-divider.c | 195 ++++++++++++++++++++++++++-----------------
include/linux/clk-provider.h | 11 +++
2 files changed, 130 insertions(+), 76 deletions(-)
diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c
index 18a9de29df0e..e092f11356c6 100644
--- a/drivers/clk/clk-divider.c
+++ b/drivers/clk/clk-divider.c
@@ -30,7 +30,7 @@
#define to_clk_divider(_hw) container_of(_hw, struct clk_divider, hw)
-#define div_mask(d) ((1 << ((d)->width)) - 1)
+#define div_mask(width) (BIT(width) - 1)
static unsigned int _get_table_maxdiv(const struct clk_div_table *table)
{
@@ -54,15 +54,16 @@ static unsigned int _get_table_mindiv(const struct clk_div_table *table)
return mindiv;
}
-static unsigned int _get_maxdiv(struct clk_divider *divider)
+static unsigned int _get_maxdiv(const struct clk_div_table *table, u8 width,
+ unsigned long flags)
{
- if (divider->flags & CLK_DIVIDER_ONE_BASED)
- return div_mask(divider);
- if (divider->flags & CLK_DIVIDER_POWER_OF_TWO)
- return 1 << div_mask(divider);
- if (divider->table)
- return _get_table_maxdiv(divider->table);
- return div_mask(divider) + 1;
+ if (flags & CLK_DIVIDER_ONE_BASED)
+ return div_mask(width);
+ if (flags & CLK_DIVIDER_POWER_OF_TWO)
+ return 1 << div_mask(width);
+ if (table)
+ return _get_table_maxdiv(table);
+ return div_mask(width) + 1;
}
static unsigned int _get_table_div(const struct clk_div_table *table,
@@ -76,14 +77,15 @@ static unsigned int _get_table_div(const struct clk_div_table *table,
return 0;
}
-static unsigned int _get_div(struct clk_divider *divider, unsigned int val)
+static unsigned int _get_div(const struct clk_div_table *table,
+ unsigned int val, unsigned long flags)
{
- if (divider->flags & CLK_DIVIDER_ONE_BASED)
+ if (flags & CLK_DIVIDER_ONE_BASED)
return val;
- if (divider->flags & CLK_DIVIDER_POWER_OF_TWO)
+ if (flags & CLK_DIVIDER_POWER_OF_TWO)
return 1 << val;
- if (divider->table)
- return _get_table_div(divider->table, val);
+ if (table)
+ return _get_table_div(table, val);
return val + 1;
}
@@ -98,29 +100,28 @@ static unsigned int _get_table_val(const struct clk_div_table *table,
return 0;
}
-static unsigned int _get_val(struct clk_divider *divider, unsigned int div)
+static unsigned int _get_val(const struct clk_div_table *table,
+ unsigned int div, unsigned long flags)
{
- if (divider->flags & CLK_DIVIDER_ONE_BASED)
+ if (flags & CLK_DIVIDER_ONE_BASED)
return div;
- if (divider->flags & CLK_DIVIDER_POWER_OF_TWO)
+ if (flags & CLK_DIVIDER_POWER_OF_TWO)
return __ffs(div);
- if (divider->table)
- return _get_table_val(divider->table, div);
+ if (table)
+ return _get_table_val(table, div);
return div - 1;
}
-static unsigned long clk_divider_recalc_rate(struct clk_hw *hw,
- unsigned long parent_rate)
+unsigned long divider_recalc_rate(struct clk_hw *hw, unsigned long parent_rate,
+ unsigned int val,
+ const struct clk_div_table *table,
+ unsigned long flags)
{
- struct clk_divider *divider = to_clk_divider(hw);
- unsigned int div, val;
-
- val = clk_readl(divider->reg) >> divider->shift;
- val &= div_mask(divider);
+ unsigned int div;
- div = _get_div(divider, val);
+ div = _get_div(table, val, flags);
if (!div) {
- WARN(!(divider->flags & CLK_DIVIDER_ALLOW_ZERO),
+ WARN(!(flags & CLK_DIVIDER_ALLOW_ZERO),
"%s: Zero divisor and CLK_DIVIDER_ALLOW_ZERO not set\n",
__clk_get_name(hw->clk));
return parent_rate;
@@ -128,6 +129,20 @@ static unsigned long clk_divider_recalc_rate(struct clk_hw *hw,
return DIV_ROUND_UP(parent_rate, div);
}
+EXPORT_SYMBOL_GPL(divider_recalc_rate);
+
+static unsigned long clk_divider_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_divider *divider = to_clk_divider(hw);
+ unsigned int val;
+
+ val = clk_readl(divider->reg) >> divider->shift;
+ val &= div_mask(divider->width);
+
+ return divider_recalc_rate(hw, parent_rate, val, divider->table,
+ divider->flags);
+}
/*
* The reverse of DIV_ROUND_UP: The maximum number which
@@ -146,12 +161,13 @@ static bool _is_valid_table_div(const struct clk_div_table *table,
return false;
}
-static bool _is_valid_div(struct clk_divider *divider, unsigned int div)
+static bool _is_valid_div(const struct clk_div_table *table, unsigned int div,
+ unsigned long flags)
{
- if (divider->flags & CLK_DIVIDER_POWER_OF_TWO)
+ if (flags & CLK_DIVIDER_POWER_OF_TWO)
return is_power_of_2(div);
- if (divider->table)
- return _is_valid_table_div(divider->table, div);
+ if (table)
+ return _is_valid_table_div(table, div);
return true;
}
@@ -191,71 +207,76 @@ static int _round_down_table(const struct clk_div_table *table, int div)
return down;
}
-static int _div_round_up(struct clk_divider *divider,
- unsigned long parent_rate, unsigned long rate)
+static int _div_round_up(const struct clk_div_table *table,
+ unsigned long parent_rate, unsigned long rate,
+ unsigned long flags)
{
int div = DIV_ROUND_UP(parent_rate, rate);
- if (divider->flags & CLK_DIVIDER_POWER_OF_TWO)
+ if (flags & CLK_DIVIDER_POWER_OF_TWO)
div = __roundup_pow_of_two(div);
- if (divider->table)
- div = _round_up_table(divider->table, div);
+ if (table)
+ div = _round_up_table(table, div);
return div;
}
-static int _div_round_closest(struct clk_divider *divider,
- unsigned long parent_rate, unsigned long rate)
+static int _div_round_closest(const struct clk_div_table *table,
+ unsigned long parent_rate, unsigned long rate,
+ unsigned long flags)
{
int up, down, div;
up = down = div = DIV_ROUND_CLOSEST(parent_rate, rate);
- if (divider->flags & CLK_DIVIDER_POWER_OF_TWO) {
+ if (flags & CLK_DIVIDER_POWER_OF_TWO) {
up = __roundup_pow_of_two(div);
down = __rounddown_pow_of_two(div);
- } else if (divider->table) {
- up = _round_up_table(divider->table, div);
- down = _round_down_table(divider->table, div);
+ } else if (table) {
+ up = _round_up_table(table, div);
+ down = _round_down_table(table, div);
}
return (up - div) <= (div - down) ? up : down;
}
-static int _div_round(struct clk_divider *divider, unsigned long parent_rate,
- unsigned long rate)
+static int _div_round(const struct clk_div_table *table,
+ unsigned long parent_rate, unsigned long rate,
+ unsigned long flags)
{
- if (divider->flags & CLK_DIVIDER_ROUND_CLOSEST)
- return _div_round_closest(divider, parent_rate, rate);
+ if (flags & CLK_DIVIDER_ROUND_CLOSEST)
+ return _div_round_closest(table, parent_rate, rate, flags);
- return _div_round_up(divider, parent_rate, rate);
+ return _div_round_up(table, parent_rate, rate, flags);
}
-static bool _is_best_div(struct clk_divider *divider,
- unsigned long rate, unsigned long now, unsigned long best)
+static bool _is_best_div(unsigned long rate, unsigned long now,
+ unsigned long best, unsigned long flags)
{
- if (divider->flags & CLK_DIVIDER_ROUND_CLOSEST)
+ if (flags & CLK_DIVIDER_ROUND_CLOSEST)
return abs(rate - now) < abs(rate - best);
return now <= rate && now > best;
}
-static int _next_div(struct clk_divider *divider, int div)
+static int _next_div(const struct clk_div_table *table, int div,
+ unsigned long flags)
{
div++;
- if (divider->flags & CLK_DIVIDER_POWER_OF_TWO)
+ if (flags & CLK_DIVIDER_POWER_OF_TWO)
return __roundup_pow_of_two(div);
- if (divider->table)
- return _round_up_table(divider->table, div);
+ if (table)
+ return _round_up_table(table, div);
return div;
}
static int clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate,
- unsigned long *best_parent_rate)
+ unsigned long *best_parent_rate,
+ const struct clk_div_table *table, u8 width,
+ unsigned long flags)
{
- struct clk_divider *divider = to_clk_divider(hw);
int i, bestdiv = 0;
unsigned long parent_rate, best = 0, now, maxdiv;
unsigned long parent_rate_saved = *best_parent_rate;
@@ -263,11 +284,11 @@ static int clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate,
if (!rate)
rate = 1;
- maxdiv = _get_maxdiv(divider);
+ maxdiv = _get_maxdiv(table, width, flags);
if (!(__clk_get_flags(hw->clk) & CLK_SET_RATE_PARENT)) {
parent_rate = *best_parent_rate;
- bestdiv = _div_round(divider, parent_rate, rate);
+ bestdiv = _div_round(table, parent_rate, rate, flags);
bestdiv = bestdiv == 0 ? 1 : bestdiv;
bestdiv = bestdiv > maxdiv ? maxdiv : bestdiv;
return bestdiv;
@@ -279,8 +300,8 @@ static int clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate,
*/
maxdiv = min(ULONG_MAX / rate, maxdiv);
- for (i = 1; i <= maxdiv; i = _next_div(divider, i)) {
- if (!_is_valid_div(divider, i))
+ for (i = 1; i <= maxdiv; i = _next_div(table, i, flags)) {
+ if (!_is_valid_div(table, i, flags))
continue;
if (rate * i == parent_rate_saved) {
/*
@@ -294,7 +315,7 @@ static int clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate,
parent_rate = __clk_round_rate(__clk_get_parent(hw->clk),
MULT_ROUND_UP(rate, i));
now = DIV_ROUND_UP(parent_rate, i);
- if (_is_best_div(divider, rate, now, best)) {
+ if (_is_best_div(rate, now, best, flags)) {
bestdiv = i;
best = now;
*best_parent_rate = parent_rate;
@@ -302,48 +323,70 @@ static int clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate,
}
if (!bestdiv) {
- bestdiv = _get_maxdiv(divider);
+ bestdiv = _get_maxdiv(table, width, flags);
*best_parent_rate = __clk_round_rate(__clk_get_parent(hw->clk), 1);
}
return bestdiv;
}
-static long clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *prate)
+long divider_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate, const struct clk_div_table *table,
+ u8 width, unsigned long flags)
{
int div;
- div = clk_divider_bestdiv(hw, rate, prate);
+
+ div = clk_divider_bestdiv(hw, rate, prate, table, width, flags);
return DIV_ROUND_UP(*prate, div);
}
+EXPORT_SYMBOL_GPL(divider_round_rate);
-static int clk_divider_set_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long parent_rate)
+static long clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate)
{
struct clk_divider *divider = to_clk_divider(hw);
+
+ return divider_round_rate(hw, rate, prate, divider->table,
+ divider->width, divider->flags);
+}
+
+int divider_get_val(unsigned long rate, unsigned long parent_rate,
+ const struct clk_div_table *table, u8 width,
+ unsigned long flags)
+{
unsigned int div, value;
- unsigned long flags = 0;
- u32 val;
div = DIV_ROUND_UP(parent_rate, rate);
- if (!_is_valid_div(divider, div))
+ if (!_is_valid_div(table, div, flags))
return -EINVAL;
- value = _get_val(divider, div);
+ value = _get_val(table, div, flags);
+
+ return min_t(unsigned int, value, div_mask(width));
+}
+EXPORT_SYMBOL_GPL(divider_get_val);
+
+static int clk_divider_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_divider *divider = to_clk_divider(hw);
+ unsigned int value;
+ unsigned long flags = 0;
+ u32 val;
- if (value > div_mask(divider))
- value = div_mask(divider);
+ value = divider_get_val(rate, parent_rate, divider->table,
+ divider->width, divider->flags);
if (divider->lock)
spin_lock_irqsave(divider->lock, flags);
if (divider->flags & CLK_DIVIDER_HIWORD_MASK) {
- val = div_mask(divider) << (divider->shift + 16);
+ val = div_mask(divider->width) << (divider->shift + 16);
} else {
val = clk_readl(divider->reg);
- val &= ~(div_mask(divider) << divider->shift);
+ val &= ~(div_mask(divider->width) << divider->shift);
}
val |= value << divider->shift;
clk_writel(val, divider->reg);
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 446faed3f79f..6e7b3a431b20 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -353,6 +353,17 @@ struct clk_divider {
extern const struct clk_ops clk_divider_ops;
extern const struct clk_ops clk_divider_ro_ops;
+
+unsigned long divider_recalc_rate(struct clk_hw *hw, unsigned long parent_rate,
+ unsigned int val, const struct clk_div_table *table,
+ unsigned long flags);
+long divider_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate, const struct clk_div_table *table,
+ u8 width, unsigned long flags);
+int divider_get_val(unsigned long rate, unsigned long parent_rate,
+ const struct clk_div_table *table, u8 width,
+ unsigned long flags);
+
struct clk *clk_register_divider(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
void __iomem *reg, u8 shift, u8 width,
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v2 3/8] clk: qcom: Add support for regmap divider clocks
2014-11-26 1:35 [PATCH v2 0/8] qcom audio clock control drivers Stephen Boyd
2014-11-26 1:35 ` [PATCH v2 1/8] clk: Add __clk_mux_determine_rate_closest Stephen Boyd
2014-11-26 1:35 ` [PATCH v2 2/8] clk: divider: Make generic for usage elsewhere Stephen Boyd
@ 2014-11-26 1:35 ` Stephen Boyd
2014-11-26 1:35 ` [PATCH v2 4/8] clk: qcom: Add simple regmap based muxes Stephen Boyd
` (4 subsequent siblings)
7 siblings, 0 replies; 10+ messages in thread
From: Stephen Boyd @ 2014-11-26 1:35 UTC (permalink / raw)
To: linux-arm-kernel
From: Josh Cartwright <joshc@codeaurora.org>
Add support for dividers that use regmap instead of readl/writel.
Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
[sboyd at codeaurora.org: Switch to using generic divider code, drop
enable/disable, reword commit text]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/clk/qcom/Makefile | 1 +
drivers/clk/qcom/clk-regmap-divider.c | 70 +++++++++++++++++++++++++++++++++++
drivers/clk/qcom/clk-regmap-divider.h | 29 +++++++++++++++
3 files changed, 100 insertions(+)
create mode 100644 drivers/clk/qcom/clk-regmap-divider.c
create mode 100644 drivers/clk/qcom/clk-regmap-divider.h
diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index 783cfb24faa4..ed8976e87c0b 100644
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -6,6 +6,7 @@ clk-qcom-y += clk-pll.o
clk-qcom-y += clk-rcg.o
clk-qcom-y += clk-rcg2.o
clk-qcom-y += clk-branch.o
+clk-qcom-y += clk-regmap-divider.o
clk-qcom-y += reset.o
obj-$(CONFIG_APQ_GCC_8084) += gcc-apq8084.o
diff --git a/drivers/clk/qcom/clk-regmap-divider.c b/drivers/clk/qcom/clk-regmap-divider.c
new file mode 100644
index 000000000000..53484912301e
--- /dev/null
+++ b/drivers/clk/qcom/clk-regmap-divider.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/regmap.h>
+#include <linux/export.h>
+
+#include "clk-regmap-divider.h"
+
+static inline struct clk_regmap_div *to_clk_regmap_div(struct clk_hw *hw)
+{
+ return container_of(to_clk_regmap(hw), struct clk_regmap_div, clkr);
+}
+
+static long div_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate)
+{
+ struct clk_regmap_div *divider = to_clk_regmap_div(hw);
+
+ return divider_round_rate(hw, rate, prate, NULL, divider->width,
+ CLK_DIVIDER_ROUND_CLOSEST);
+}
+
+static int div_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_regmap_div *divider = to_clk_regmap_div(hw);
+ struct clk_regmap *clkr = ÷r->clkr;
+ u32 div;
+
+ div = divider_get_val(rate, parent_rate, NULL, divider->width,
+ CLK_DIVIDER_ROUND_CLOSEST);
+
+ return regmap_update_bits(clkr->regmap, divider->reg,
+ (BIT(divider->width) - 1) << divider->shift,
+ div << divider->shift);
+}
+
+static unsigned long div_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_regmap_div *divider = to_clk_regmap_div(hw);
+ struct clk_regmap *clkr = ÷r->clkr;
+ u32 div;
+
+ regmap_read(clkr->regmap, divider->reg, &div);
+ div >>= divider->shift;
+ div &= BIT(divider->width) - 1;
+
+ return divider_recalc_rate(hw, parent_rate, div, NULL,
+ CLK_DIVIDER_ROUND_CLOSEST);
+}
+
+const struct clk_ops clk_regmap_div_ops = {
+ .round_rate = div_round_rate,
+ .set_rate = div_set_rate,
+ .recalc_rate = div_recalc_rate,
+};
+EXPORT_SYMBOL_GPL(clk_regmap_div_ops);
diff --git a/drivers/clk/qcom/clk-regmap-divider.h b/drivers/clk/qcom/clk-regmap-divider.h
new file mode 100644
index 000000000000..fc4492e3a827
--- /dev/null
+++ b/drivers/clk/qcom/clk-regmap-divider.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __QCOM_CLK_REGMAP_DIVIDER_H__
+#define __QCOM_CLK_REGMAP_DIVIDER_H__
+
+#include <linux/clk-provider.h>
+#include "clk-regmap.h"
+
+struct clk_regmap_div {
+ u32 reg;
+ u32 shift;
+ u32 width;
+ struct clk_regmap clkr;
+};
+
+extern const struct clk_ops clk_regmap_div_ops;
+
+#endif
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v2 4/8] clk: qcom: Add simple regmap based muxes
2014-11-26 1:35 [PATCH v2 0/8] qcom audio clock control drivers Stephen Boyd
` (2 preceding siblings ...)
2014-11-26 1:35 ` [PATCH v2 3/8] clk: qcom: Add support for regmap divider clocks Stephen Boyd
@ 2014-11-26 1:35 ` Stephen Boyd
2014-11-26 1:35 ` [PATCH v2 5/8] dt-bindings: Add #defines for IPQ806x lpass clock control Stephen Boyd
` (3 subsequent siblings)
7 siblings, 0 replies; 10+ messages in thread
From: Stephen Boyd @ 2014-11-26 1:35 UTC (permalink / raw)
To: linux-arm-kernel
Add support for muxes that use regmap instead of readl/writel
directly. We don't support as many features as clk-mux.c, but
this is good enough to support getting and setting parents.
Adding a table based lookup can be added in the future if needed.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/clk/qcom/Makefile | 1 +
drivers/clk/qcom/clk-regmap-mux.c | 59 +++++++++++++++++++++++++++++++++++++++
drivers/clk/qcom/clk-regmap-mux.h | 29 +++++++++++++++++++
3 files changed, 89 insertions(+)
create mode 100644 drivers/clk/qcom/clk-regmap-mux.c
create mode 100644 drivers/clk/qcom/clk-regmap-mux.h
diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index ed8976e87c0b..f5e5607f3965 100644
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -7,6 +7,7 @@ clk-qcom-y += clk-rcg.o
clk-qcom-y += clk-rcg2.o
clk-qcom-y += clk-branch.o
clk-qcom-y += clk-regmap-divider.o
+clk-qcom-y += clk-regmap-mux.o
clk-qcom-y += reset.o
obj-$(CONFIG_APQ_GCC_8084) += gcc-apq8084.o
diff --git a/drivers/clk/qcom/clk-regmap-mux.c b/drivers/clk/qcom/clk-regmap-mux.c
new file mode 100644
index 000000000000..cae3071f384c
--- /dev/null
+++ b/drivers/clk/qcom/clk-regmap-mux.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/regmap.h>
+#include <linux/export.h>
+
+#include "clk-regmap-mux.h"
+
+static inline struct clk_regmap_mux *to_clk_regmap_mux(struct clk_hw *hw)
+{
+ return container_of(to_clk_regmap(hw), struct clk_regmap_mux, clkr);
+}
+
+static u8 mux_get_parent(struct clk_hw *hw)
+{
+ struct clk_regmap_mux *mux = to_clk_regmap_mux(hw);
+ struct clk_regmap *clkr = to_clk_regmap(hw);
+ unsigned int mask = GENMASK(mux->width - 1, 0);
+ unsigned int val;
+
+ regmap_read(clkr->regmap, mux->reg, &val);
+
+ val >>= mux->shift;
+ val &= mask;
+
+ return val;
+}
+
+static int mux_set_parent(struct clk_hw *hw, u8 index)
+{
+ struct clk_regmap_mux *mux = to_clk_regmap_mux(hw);
+ struct clk_regmap *clkr = to_clk_regmap(hw);
+ unsigned int mask = GENMASK(mux->width + mux->shift - 1, mux->shift);
+ unsigned int val;
+
+ val = index;
+ val <<= mux->shift;
+
+ return regmap_update_bits(clkr->regmap, mux->reg, mask, val);
+}
+
+const struct clk_ops clk_regmap_mux_closest_ops = {
+ .get_parent = mux_get_parent,
+ .set_parent = mux_set_parent,
+ .determine_rate = __clk_mux_determine_rate_closest,
+};
+EXPORT_SYMBOL_GPL(clk_regmap_mux_closest_ops);
diff --git a/drivers/clk/qcom/clk-regmap-mux.h b/drivers/clk/qcom/clk-regmap-mux.h
new file mode 100644
index 000000000000..5cec76154fda
--- /dev/null
+++ b/drivers/clk/qcom/clk-regmap-mux.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __QCOM_CLK_REGMAP_MUX_H__
+#define __QCOM_CLK_REGMAP_MUX_H__
+
+#include <linux/clk-provider.h>
+#include "clk-regmap.h"
+
+struct clk_regmap_mux {
+ u32 reg;
+ u32 shift;
+ u32 width;
+ struct clk_regmap clkr;
+};
+
+extern const struct clk_ops clk_regmap_mux_closest_ops;
+
+#endif
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v2 5/8] dt-bindings: Add #defines for IPQ806x lpass clock control
2014-11-26 1:35 [PATCH v2 0/8] qcom audio clock control drivers Stephen Boyd
` (3 preceding siblings ...)
2014-11-26 1:35 ` [PATCH v2 4/8] clk: qcom: Add simple regmap based muxes Stephen Boyd
@ 2014-11-26 1:35 ` Stephen Boyd
2014-11-26 1:35 ` [PATCH v2 6/8] clk: qcom: Add IPQ806X LPASS clock controller (LCC) driver Stephen Boyd
` (2 subsequent siblings)
7 siblings, 0 replies; 10+ messages in thread
From: Stephen Boyd @ 2014-11-26 1:35 UTC (permalink / raw)
To: linux-arm-kernel
From: Rajendra Nayak <rnayak@codeaurora.org>
Add defines to make more human readable numbers for the lpass
clock controller found on IPQ806x SoCs. Also remove the PLL4
define in gcc to avoid #define conflicts because that clock
doesn't exist in gcc, instead it lives in lcc.
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
[sboyd at codeaurora.org: Split off into separate patch]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
include/dt-bindings/clock/qcom,gcc-ipq806x.h | 1 -
include/dt-bindings/clock/qcom,lcc-ipq806x.h | 30 ++++++++++++++++++++++++++++
2 files changed, 30 insertions(+), 1 deletion(-)
create mode 100644 include/dt-bindings/clock/qcom,lcc-ipq806x.h
diff --git a/include/dt-bindings/clock/qcom,gcc-ipq806x.h b/include/dt-bindings/clock/qcom,gcc-ipq806x.h
index b857cadb0bd4..04fb29ae30e6 100644
--- a/include/dt-bindings/clock/qcom,gcc-ipq806x.h
+++ b/include/dt-bindings/clock/qcom,gcc-ipq806x.h
@@ -238,7 +238,6 @@
#define PLL0_VOTE 221
#define PLL3 222
#define PLL3_VOTE 223
-#define PLL4 224
#define PLL4_VOTE 225
#define PLL8 226
#define PLL8_VOTE 227
diff --git a/include/dt-bindings/clock/qcom,lcc-ipq806x.h b/include/dt-bindings/clock/qcom,lcc-ipq806x.h
new file mode 100644
index 000000000000..4e944b85c56d
--- /dev/null
+++ b/include/dt-bindings/clock/qcom,lcc-ipq806x.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _DT_BINDINGS_CLK_LCC_IPQ806X_H
+#define _DT_BINDINGS_CLK_LCC_IPQ806X_H
+
+#define PLL4 0
+#define MI2S_OSR_SRC 1
+#define MI2S_OSR_CLK 2
+#define MI2S_DIV_CLK 3
+#define MI2S_BIT_DIV_CLK 4
+#define MI2S_BIT_CLK 5
+#define PCM_SRC 6
+#define PCM_CLK_OUT 7
+#define PCM_CLK 8
+#define SPDIF_SRC 9
+#define SPDIF_CLK 10
+#define AHBIX_CLK 11
+
+#endif
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v2 6/8] clk: qcom: Add IPQ806X LPASS clock controller (LCC) driver
2014-11-26 1:35 [PATCH v2 0/8] qcom audio clock control drivers Stephen Boyd
` (4 preceding siblings ...)
2014-11-26 1:35 ` [PATCH v2 5/8] dt-bindings: Add #defines for IPQ806x lpass clock control Stephen Boyd
@ 2014-11-26 1:35 ` Stephen Boyd
2014-12-04 1:05 ` Stephen Boyd
2014-11-26 1:35 ` [PATCH v2 7/8] clk: qcom: Add MSM8960/APQ8064 " Stephen Boyd
2014-11-26 1:35 ` [PATCH v2 8/8] devicetree: bindings: Document qcom,lcc Stephen Boyd
7 siblings, 1 reply; 10+ messages in thread
From: Stephen Boyd @ 2014-11-26 1:35 UTC (permalink / raw)
To: linux-arm-kernel
From: Rajendra Nayak <rnayak@codeaurora.org>
Add an LCC driver for IPQ806x that supports the i2s, S/PDIF, and
pcm clocks.
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
[sboyd at codeaurora.org: Reworded commit text, added Kconfig
select, fleshed out Kconfig description a bit more, added pll4
configuration and reworked probe for it, added muxes, split out
dt-binding file]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Change-Id: Idf4d008306a98d75d914c5625b46d15c6f7921b4
---
drivers/clk/qcom/Kconfig | 9 +
drivers/clk/qcom/Makefile | 1 +
drivers/clk/qcom/gcc-ipq806x.c | 12 ++
drivers/clk/qcom/lcc-ipq806x.c | 473 +++++++++++++++++++++++++++++++++++++++++
4 files changed, 495 insertions(+)
create mode 100644 drivers/clk/qcom/lcc-ipq806x.c
diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index 1107351ed346..07bce5f35eee 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -29,6 +29,15 @@ config IPQ_GCC_806X
Say Y if you want to use peripheral devices such as UART, SPI,
i2c, USB, SD/eMMC, etc.
+config IPQ_LCC_806X
+ tristate "IPQ806x LPASS Clock Controller"
+ select IPQ_GCC_806X
+ depends on COMMON_CLK_QCOM
+ help
+ Support for the LPASS clock controller on ipq806x devices.
+ Say Y if you want to use audio devices such as i2s, pcm,
+ S/PDIF, etc.
+
config MSM_GCC_8660
tristate "MSM8660 Global Clock Controller"
depends on COMMON_CLK_QCOM
diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index f5e5607f3965..13c03a8808ec 100644
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -13,6 +13,7 @@ clk-qcom-y += reset.o
obj-$(CONFIG_APQ_GCC_8084) += gcc-apq8084.o
obj-$(CONFIG_APQ_MMCC_8084) += mmcc-apq8084.o
obj-$(CONFIG_IPQ_GCC_806X) += gcc-ipq806x.o
+obj-$(CONFIG_IPQ_LCC_806X) += lcc-ipq806x.o
obj-$(CONFIG_MSM_GCC_8660) += gcc-msm8660.o
obj-$(CONFIG_MSM_GCC_8960) += gcc-msm8960.o
obj-$(CONFIG_MSM_GCC_8974) += gcc-msm8974.o
diff --git a/drivers/clk/qcom/gcc-ipq806x.c b/drivers/clk/qcom/gcc-ipq806x.c
index 5cd62a709ac7..206535531b86 100644
--- a/drivers/clk/qcom/gcc-ipq806x.c
+++ b/drivers/clk/qcom/gcc-ipq806x.c
@@ -75,6 +75,17 @@ static struct clk_pll pll3 = {
},
};
+static struct clk_regmap pll4_vote = {
+ .enable_reg = 0x34c0,
+ .enable_mask = BIT(4),
+ .hw.init = &(struct clk_init_data){
+ .name = "pll4_vote",
+ .parent_names = (const char *[]){ "pll4" },
+ .num_parents = 1,
+ .ops = &clk_pll_vote_ops,
+ },
+};
+
static struct clk_pll pll8 = {
.l_reg = 0x3144,
.m_reg = 0x3148,
@@ -2163,6 +2174,7 @@ static struct clk_regmap *gcc_ipq806x_clks[] = {
[PLL0] = &pll0.clkr,
[PLL0_VOTE] = &pll0_vote,
[PLL3] = &pll3.clkr,
+ [PLL4_VOTE] = &pll4_vote,
[PLL8] = &pll8.clkr,
[PLL8_VOTE] = &pll8_vote,
[PLL14] = &pll14.clkr,
diff --git a/drivers/clk/qcom/lcc-ipq806x.c b/drivers/clk/qcom/lcc-ipq806x.c
new file mode 100644
index 000000000000..80a1ecf2fe69
--- /dev/null
+++ b/drivers/clk/qcom/lcc-ipq806x.c
@@ -0,0 +1,473 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/clk-provider.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/clock/qcom,lcc-ipq806x.h>
+
+#include "common.h"
+#include "clk-regmap.h"
+#include "clk-pll.h"
+#include "clk-rcg.h"
+#include "clk-branch.h"
+#include "clk-regmap-divider.h"
+#include "clk-regmap-mux.h"
+
+static struct clk_pll pll4 = {
+ .l_reg = 0x4,
+ .m_reg = 0x8,
+ .n_reg = 0xc,
+ .config_reg = 0x14,
+ .mode_reg = 0x0,
+ .status_reg = 0x18,
+ .status_bit = 16,
+ .clkr.hw.init = &(struct clk_init_data){
+ .name = "pll4",
+ .parent_names = (const char *[]){ "pxo" },
+ .num_parents = 1,
+ .ops = &clk_pll_ops,
+ },
+};
+
+static const struct pll_config pll4_config = {
+ .l = 0xf,
+ .m = 0x91,
+ .n = 0xc7,
+ .vco_val = 0x0,
+ .vco_mask = BIT(17) | BIT(16),
+ .pre_div_val = 0x0,
+ .pre_div_mask = BIT(19),
+ .post_div_val = 0x0,
+ .post_div_mask = BIT(21) | BIT(20),
+ .mn_ena_mask = BIT(22),
+ .main_output_mask = BIT(23),
+};
+
+#define P_PXO 0
+#define P_PLL4 1
+
+static const u8 lcc_pxo_pll4_map[] = {
+ [P_PXO] = 0,
+ [P_PLL4] = 2,
+};
+
+static const char *lcc_pxo_pll4[] = {
+ "pxo",
+ "pll4_vote",
+};
+
+static struct freq_tbl clk_tbl_aif_mi2s[] = {
+ { 1024000, P_PLL4, 4, 1, 96 },
+ { 1411200, P_PLL4, 4, 2, 139 },
+ { 1536000, P_PLL4, 4, 1, 64 },
+ { 2048000, P_PLL4, 4, 1, 48 },
+ { 2116800, P_PLL4, 4, 2, 93 },
+ { 2304000, P_PLL4, 4, 2, 85 },
+ { 2822400, P_PLL4, 4, 6, 209 },
+ { 3072000, P_PLL4, 4, 1, 32 },
+ { 3175200, P_PLL4, 4, 1, 31 },
+ { 4096000, P_PLL4, 4, 1, 24 },
+ { 4233600, P_PLL4, 4, 9, 209 },
+ { 4608000, P_PLL4, 4, 3, 64 },
+ { 5644800, P_PLL4, 4, 12, 209 },
+ { 6144000, P_PLL4, 4, 1, 16 },
+ { 6350400, P_PLL4, 4, 2, 31 },
+ { 8192000, P_PLL4, 4, 1, 12 },
+ { 8467200, P_PLL4, 4, 18, 209 },
+ { 9216000, P_PLL4, 4, 3, 32 },
+ { 11289600, P_PLL4, 4, 24, 209 },
+ { 12288000, P_PLL4, 4, 1, 8 },
+ { 12700800, P_PLL4, 4, 27, 209 },
+ { 13824000, P_PLL4, 4, 9, 64 },
+ { 16384000, P_PLL4, 4, 1, 6 },
+ { 16934400, P_PLL4, 4, 41, 238 },
+ { 18432000, P_PLL4, 4, 3, 16 },
+ { 22579200, P_PLL4, 2, 24, 209 },
+ { 24576000, P_PLL4, 4, 1, 4 },
+ { 27648000, P_PLL4, 4, 9, 32 },
+ { 33868800, P_PLL4, 4, 41, 119 },
+ { 36864000, P_PLL4, 4, 3, 8 },
+ { 45158400, P_PLL4, 1, 24, 209 },
+ { 49152000, P_PLL4, 4, 1, 2 },
+ { 50803200, P_PLL4, 1, 27, 209 },
+ { }
+};
+
+static struct clk_rcg mi2s_osr_src = {
+ .ns_reg = 0x48,
+ .md_reg = 0x4c,
+ .mn = {
+ .mnctr_en_bit = 8,
+ .mnctr_reset_bit = 7,
+ .mnctr_mode_shift = 5,
+ .n_val_shift = 24,
+ .m_val_shift = 8,
+ .width = 8,
+ },
+ .p = {
+ .pre_div_shift = 3,
+ .pre_div_width = 2,
+ },
+ .s = {
+ .src_sel_shift = 0,
+ .parent_map = lcc_pxo_pll4_map,
+ },
+ .freq_tbl = clk_tbl_aif_mi2s,
+ .clkr = {
+ .enable_reg = 0x48,
+ .enable_mask = BIT(9),
+ .hw.init = &(struct clk_init_data){
+ .name = "mi2s_osr_src",
+ .parent_names = lcc_pxo_pll4,
+ .num_parents = 2,
+ .ops = &clk_rcg_ops,
+ .flags = CLK_SET_RATE_GATE,
+ },
+ },
+};
+
+static const char *lcc_mi2s_parents[] = {
+ "mi2s_osr_src",
+};
+
+static struct clk_branch mi2s_osr_clk = {
+ .halt_reg = 0x50,
+ .halt_bit = 1,
+ .halt_check = BRANCH_HALT_ENABLE,
+ .clkr = {
+ .enable_reg = 0x48,
+ .enable_mask = BIT(17),
+ .hw.init = &(struct clk_init_data){
+ .name = "mi2s_osr_clk",
+ .parent_names = lcc_mi2s_parents,
+ .num_parents = 1,
+ .ops = &clk_branch_ops,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+ },
+};
+
+static struct clk_regmap_div mi2s_div_clk = {
+ .reg = 0x48,
+ .shift = 10,
+ .width = 4,
+ .clkr = {
+ .hw.init = &(struct clk_init_data){
+ .name = "mi2s_div_clk",
+ .parent_names = lcc_mi2s_parents,
+ .num_parents = 1,
+ .ops = &clk_regmap_div_ops,
+ },
+ },
+};
+
+static struct clk_branch mi2s_bit_div_clk = {
+ .halt_reg = 0x50,
+ .halt_bit = 0,
+ .halt_check = BRANCH_HALT_ENABLE,
+ .clkr = {
+ .enable_reg = 0x48,
+ .enable_mask = BIT(15),
+ .hw.init = &(struct clk_init_data){
+ .name = "mi2s_bit_div_clk",
+ .parent_names = lcc_mi2s_parents,
+ .num_parents = 1,
+ .ops = &clk_branch_ops,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+ },
+};
+
+
+static struct clk_regmap_mux mi2s_bit_clk = {
+ .reg = 0x48,
+ .shift = 14,
+ .width = 1,
+ .clkr = {
+ .hw.init = &(struct clk_init_data){
+ .name = "mi2s_bit_clk",
+ .parent_names = (const char *[]){
+ "mi2s_bit_div_clk",
+ "mi2s_codec_clk",
+ },
+ .num_parents = 2,
+ .ops = &clk_regmap_mux_closest_ops,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+ },
+};
+
+static struct freq_tbl clk_tbl_pcm[] = {
+ { 64000, P_PLL4, 4, 1, 1536 },
+ { 128000, P_PLL4, 4, 1, 768 },
+ { 256000, P_PLL4, 4, 1, 384 },
+ { 512000, P_PLL4, 4, 1, 192 },
+ { 1024000, P_PLL4, 4, 1, 96 },
+ { 2048000, P_PLL4, 4, 1, 48 },
+ { },
+};
+
+static struct clk_rcg pcm_src = {
+ .ns_reg = 0x54,
+ .md_reg = 0x58,
+ .mn = {
+ .mnctr_en_bit = 8,
+ .mnctr_reset_bit = 7,
+ .mnctr_mode_shift = 5,
+ .n_val_shift = 16,
+ .m_val_shift = 16,
+ .width = 16,
+ },
+ .p = {
+ .pre_div_shift = 3,
+ .pre_div_width = 2,
+ },
+ .s = {
+ .src_sel_shift = 0,
+ .parent_map = lcc_pxo_pll4_map,
+ },
+ .freq_tbl = clk_tbl_pcm,
+ .clkr = {
+ .enable_reg = 0x54,
+ .enable_mask = BIT(9),
+ .hw.init = &(struct clk_init_data){
+ .name = "pcm_src",
+ .parent_names = lcc_pxo_pll4,
+ .num_parents = 2,
+ .ops = &clk_rcg_ops,
+ .flags = CLK_SET_RATE_GATE,
+ },
+ },
+};
+
+static struct clk_branch pcm_clk_out = {
+ .halt_reg = 0x5c,
+ .halt_bit = 0,
+ .halt_check = BRANCH_HALT_ENABLE,
+ .clkr = {
+ .enable_reg = 0x54,
+ .enable_mask = BIT(11),
+ .hw.init = &(struct clk_init_data){
+ .name = "pcm_clk_out",
+ .parent_names = (const char *[]){ "pcm_src" },
+ .num_parents = 1,
+ .ops = &clk_branch_ops,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+ },
+};
+
+static struct clk_regmap_mux pcm_clk = {
+ .reg = 0x54,
+ .shift = 10,
+ .width = 1,
+ .clkr = {
+ .hw.init = &(struct clk_init_data){
+ .name = "pcm_clk",
+ .parent_names = (const char *[]){
+ "pcm_clk_out",
+ "pcm_codec_clk",
+ },
+ .num_parents = 2,
+ .ops = &clk_regmap_mux_closest_ops,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+ },
+};
+
+static struct freq_tbl clk_tbl_aif_osr[] = {
+ { 22050, P_PLL4, 1, 147, 20480 },
+ { 32000, P_PLL4, 1, 1, 96 },
+ { 44100, P_PLL4, 1, 147, 10240 },
+ { 48000, P_PLL4, 1, 1, 64 },
+ { 88200, P_PLL4, 1, 147, 5120 },
+ { 96000, P_PLL4, 1, 1, 32 },
+ { 176400, P_PLL4, 1, 147, 2560 },
+ { 192000, P_PLL4, 1, 1, 16 },
+ { },
+};
+
+static struct clk_rcg spdif_src = {
+ .ns_reg = 0xcc,
+ .md_reg = 0xd0,
+ .mn = {
+ .mnctr_en_bit = 8,
+ .mnctr_reset_bit = 7,
+ .mnctr_mode_shift = 5,
+ .n_val_shift = 16,
+ .m_val_shift = 16,
+ .width = 8,
+ },
+ .p = {
+ .pre_div_shift = 3,
+ .pre_div_width = 2,
+ },
+ .s = {
+ .src_sel_shift = 0,
+ .parent_map = lcc_pxo_pll4_map,
+ },
+ .freq_tbl = clk_tbl_aif_osr,
+ .clkr = {
+ .enable_reg = 0xcc,
+ .enable_mask = BIT(9),
+ .hw.init = &(struct clk_init_data){
+ .name = "spdif_src",
+ .parent_names = lcc_pxo_pll4,
+ .num_parents = 2,
+ .ops = &clk_rcg_ops,
+ .flags = CLK_SET_RATE_GATE,
+ },
+ },
+};
+
+static const char *lcc_spdif_parents[] = {
+ "spdif_src",
+};
+
+static struct clk_branch spdif_clk = {
+ .halt_reg = 0xd4,
+ .halt_bit = 1,
+ .halt_check = BRANCH_HALT_ENABLE,
+ .clkr = {
+ .enable_reg = 0xcc,
+ .enable_mask = BIT(12),
+ .hw.init = &(struct clk_init_data){
+ .name = "spdif_clk",
+ .parent_names = lcc_spdif_parents,
+ .num_parents = 1,
+ .ops = &clk_branch_ops,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+ },
+};
+
+static struct freq_tbl clk_tbl_ahbix[] = {
+ { 131072, P_PLL4, 1, 1, 3 },
+ { },
+};
+
+static struct clk_rcg ahbix_clk = {
+ .ns_reg = 0x38,
+ .md_reg = 0x3c,
+ .mn = {
+ .mnctr_en_bit = 8,
+ .mnctr_reset_bit = 7,
+ .mnctr_mode_shift = 5,
+ .n_val_shift = 24,
+ .m_val_shift = 8,
+ .width = 8,
+ },
+ .p = {
+ .pre_div_shift = 3,
+ .pre_div_width = 2,
+ },
+ .s = {
+ .src_sel_shift = 0,
+ .parent_map = lcc_pxo_pll4_map,
+ },
+ .freq_tbl = clk_tbl_ahbix,
+ .clkr = {
+ .enable_reg = 0x38,
+ .enable_mask = BIT(10), /* toggle the gfmux to select mn/pxo */
+ .hw.init = &(struct clk_init_data){
+ .name = "ahbix",
+ .parent_names = lcc_pxo_pll4,
+ .num_parents = 2,
+ .ops = &clk_rcg_ops,
+ .flags = CLK_SET_RATE_GATE,
+ },
+ },
+};
+
+static struct clk_regmap *lcc_ipq806x_clks[] = {
+ [PLL4] = &pll4.clkr,
+ [MI2S_OSR_SRC] = &mi2s_osr_src.clkr,
+ [MI2S_OSR_CLK] = &mi2s_osr_clk.clkr,
+ [MI2S_DIV_CLK] = &mi2s_div_clk.clkr,
+ [MI2S_BIT_DIV_CLK] = &mi2s_bit_div_clk.clkr,
+ [MI2S_BIT_CLK] = &mi2s_bit_clk.clkr,
+ [PCM_SRC] = &pcm_src.clkr,
+ [PCM_CLK_OUT] = &pcm_clk_out.clkr,
+ [PCM_CLK] = &pcm_clk.clkr,
+ [SPDIF_SRC] = &spdif_src.clkr,
+ [SPDIF_CLK] = &spdif_clk.clkr,
+ [AHBIX_CLK] = &ahbix_clk.clkr,
+};
+
+static const struct regmap_config lcc_ipq806x_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .max_register = 0xfc,
+ .fast_io = true,
+};
+
+static const struct qcom_cc_desc lcc_ipq806x_desc = {
+ .config = &lcc_ipq806x_regmap_config,
+ .clks = lcc_ipq806x_clks,
+ .num_clks = ARRAY_SIZE(lcc_ipq806x_clks),
+};
+
+static const struct of_device_id lcc_ipq806x_match_table[] = {
+ { .compatible = "qcom,lcc-ipq8064" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, lcc_ipq806x_match_table);
+
+static int lcc_ipq806x_probe(struct platform_device *pdev)
+{
+ u32 val;
+ struct regmap *regmap;
+
+ regmap = qcom_cc_map(pdev, &lcc_ipq806x_desc);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ /* Configure the rate of PLL4 if the bootloader hasn't already */
+ val = regmap_read(regmap, 0x0, &val);
+ if (!val)
+ clk_pll_configure_sr(&pll4, regmap, &pll4_config, true);
+ /* Enable PLL4 source on the LPASS Primary PLL Mux */
+ regmap_write(regmap, 0xc4, 0x1);
+
+ return qcom_cc_really_probe(pdev, &lcc_ipq806x_desc, regmap);
+}
+
+static int lcc_ipq806x_remove(struct platform_device *pdev)
+{
+ qcom_cc_remove(pdev);
+ return 0;
+}
+
+static struct platform_driver lcc_ipq806x_driver = {
+ .probe = lcc_ipq806x_probe,
+ .remove = lcc_ipq806x_remove,
+ .driver = {
+ .name = "lcc-ipq806x",
+ .owner = THIS_MODULE,
+ .of_match_table = lcc_ipq806x_match_table,
+ },
+};
+module_platform_driver(lcc_ipq806x_driver);
+
+MODULE_DESCRIPTION("QCOM LCC IPQ806x Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:lcc-ipq806x");
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v2 6/8] clk: qcom: Add IPQ806X LPASS clock controller (LCC) driver
2014-11-26 1:35 ` [PATCH v2 6/8] clk: qcom: Add IPQ806X LPASS clock controller (LCC) driver Stephen Boyd
@ 2014-12-04 1:05 ` Stephen Boyd
0 siblings, 0 replies; 10+ messages in thread
From: Stephen Boyd @ 2014-12-04 1:05 UTC (permalink / raw)
To: linux-arm-kernel
On 11/25/2014 05:35 PM, Stephen Boyd wrote:
> +
> +static struct clk_regmap_div mi2s_div_clk = {
> + .reg = 0x48,
> + .shift = 10,
> + .width = 4,
> + .clkr = {
> + .hw.init = &(struct clk_init_data){
> + .name = "mi2s_div_clk",
> + .parent_names = lcc_mi2s_parents,
> + .num_parents = 1,
> + .ops = &clk_regmap_div_ops,
> + },
> + },
> +};
Oops this is wrong. Let's fold in this patch.
diff --git a/drivers/clk/qcom/lcc-ipq806x.c b/drivers/clk/qcom/lcc-ipq806x.c
index 80a1ecf2fe69..121ffde25dc3 100644
--- a/drivers/clk/qcom/lcc-ipq806x.c
+++ b/drivers/clk/qcom/lcc-ipq806x.c
@@ -188,7 +188,7 @@ static struct clk_branch mi2s_bit_div_clk = {
.enable_mask = BIT(15),
.hw.init = &(struct clk_init_data){
.name = "mi2s_bit_div_clk",
- .parent_names = lcc_mi2s_parents,
+ .parent_names = (const char *[]){ "mi2s_div_clk" },
.num_parents = 1,
.ops = &clk_branch_ops,
.flags = CLK_SET_RATE_PARENT,
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH v2 7/8] clk: qcom: Add MSM8960/APQ8064 LPASS clock controller (LCC) driver
2014-11-26 1:35 [PATCH v2 0/8] qcom audio clock control drivers Stephen Boyd
` (5 preceding siblings ...)
2014-11-26 1:35 ` [PATCH v2 6/8] clk: qcom: Add IPQ806X LPASS clock controller (LCC) driver Stephen Boyd
@ 2014-11-26 1:35 ` Stephen Boyd
2014-11-26 1:35 ` [PATCH v2 8/8] devicetree: bindings: Document qcom,lcc Stephen Boyd
7 siblings, 0 replies; 10+ messages in thread
From: Stephen Boyd @ 2014-11-26 1:35 UTC (permalink / raw)
To: linux-arm-kernel
Add an LCC driver for IPQ806x that supports the i2s, slimbus, and
pcm clocks.
Change-Id: I2549b821f7bf467c1bd80d4827a1a7621e725659
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/clk/qcom/Kconfig | 9 +
drivers/clk/qcom/Makefile | 1 +
drivers/clk/qcom/lcc-msm8960.c | 585 +++++++++++++++++++++++++++
include/dt-bindings/clock/qcom,lcc-msm8960.h | 50 +++
4 files changed, 645 insertions(+)
create mode 100644 drivers/clk/qcom/lcc-msm8960.c
create mode 100644 include/dt-bindings/clock/qcom,lcc-msm8960.h
diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index 07bce5f35eee..0d7ab52b7ab0 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -54,6 +54,15 @@ config MSM_GCC_8960
Say Y if you want to use peripheral devices such as UART, SPI,
i2c, USB, SD/eMMC, SATA, PCIe, etc.
+config MSM_LCC_8960
+ tristate "APQ8064/MSM8960 LPASS Clock Controller"
+ select MSM_GCC_8960
+ depends on COMMON_CLK_QCOM
+ help
+ Support for the LPASS clock controller on apq8064/msm8960 devices.
+ Say Y if you want to use audio devices such as i2s, pcm,
+ SLIMBus, etc.
+
config MSM_MMCC_8960
tristate "MSM8960 Multimedia Clock Controller"
select MSM_GCC_8960
diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index 13c03a8808ec..617826469595 100644
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_IPQ_GCC_806X) += gcc-ipq806x.o
obj-$(CONFIG_IPQ_LCC_806X) += lcc-ipq806x.o
obj-$(CONFIG_MSM_GCC_8660) += gcc-msm8660.o
obj-$(CONFIG_MSM_GCC_8960) += gcc-msm8960.o
+obj-$(CONFIG_MSM_LCC_8960) += lcc-msm8960.o
obj-$(CONFIG_MSM_GCC_8974) += gcc-msm8974.o
obj-$(CONFIG_MSM_MMCC_8960) += mmcc-msm8960.o
obj-$(CONFIG_MSM_MMCC_8974) += mmcc-msm8974.o
diff --git a/drivers/clk/qcom/lcc-msm8960.c b/drivers/clk/qcom/lcc-msm8960.c
new file mode 100644
index 000000000000..a75a408cfccd
--- /dev/null
+++ b/drivers/clk/qcom/lcc-msm8960.c
@@ -0,0 +1,585 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/clk-provider.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/clock/qcom,lcc-msm8960.h>
+
+#include "common.h"
+#include "clk-regmap.h"
+#include "clk-pll.h"
+#include "clk-rcg.h"
+#include "clk-branch.h"
+#include "clk-regmap-divider.h"
+#include "clk-regmap-mux.h"
+
+static struct clk_pll pll4 = {
+ .l_reg = 0x4,
+ .m_reg = 0x8,
+ .n_reg = 0xc,
+ .config_reg = 0x14,
+ .mode_reg = 0x0,
+ .status_reg = 0x18,
+ .status_bit = 16,
+ .clkr.hw.init = &(struct clk_init_data){
+ .name = "pll4",
+ .parent_names = (const char *[]){ "pxo" },
+ .num_parents = 1,
+ .ops = &clk_pll_ops,
+ },
+};
+
+#define P_PXO 0
+#define P_PLL4 1
+
+static const u8 lcc_pxo_pll4_map[] = {
+ [P_PXO] = 0,
+ [P_PLL4] = 2,
+};
+
+static const char *lcc_pxo_pll4[] = {
+ "pxo",
+ "pll4_vote",
+};
+
+static struct freq_tbl clk_tbl_aif_osr_492[] = {
+ { 512000, P_PLL4, 4, 1, 240 },
+ { 768000, P_PLL4, 4, 1, 160 },
+ { 1024000, P_PLL4, 4, 1, 120 },
+ { 1536000, P_PLL4, 4, 1, 80 },
+ { 2048000, P_PLL4, 4, 1, 60 },
+ { 3072000, P_PLL4, 4, 1, 40 },
+ { 4096000, P_PLL4, 4, 1, 30 },
+ { 6144000, P_PLL4, 4, 1, 20 },
+ { 8192000, P_PLL4, 4, 1, 15 },
+ { 12288000, P_PLL4, 4, 1, 10 },
+ { 24576000, P_PLL4, 4, 1, 5 },
+ { 27000000, P_PXO, 1, 0, 0 },
+ { }
+};
+
+static struct freq_tbl clk_tbl_aif_osr_393[] = {
+ { 512000, P_PLL4, 4, 1, 192 },
+ { 768000, P_PLL4, 4, 1, 128 },
+ { 1024000, P_PLL4, 4, 1, 96 },
+ { 1536000, P_PLL4, 4, 1, 64 },
+ { 2048000, P_PLL4, 4, 1, 48 },
+ { 3072000, P_PLL4, 4, 1, 32 },
+ { 4096000, P_PLL4, 4, 1, 24 },
+ { 6144000, P_PLL4, 4, 1, 16 },
+ { 8192000, P_PLL4, 4, 1, 12 },
+ { 12288000, P_PLL4, 4, 1, 8 },
+ { 24576000, P_PLL4, 4, 1, 4 },
+ { 27000000, P_PXO, 1, 0, 0 },
+ { }
+};
+
+static struct clk_rcg mi2s_osr_src = {
+ .ns_reg = 0x48,
+ .md_reg = 0x4c,
+ .mn = {
+ .mnctr_en_bit = 8,
+ .mnctr_reset_bit = 7,
+ .mnctr_mode_shift = 5,
+ .n_val_shift = 24,
+ .m_val_shift = 8,
+ .width = 8,
+ },
+ .p = {
+ .pre_div_shift = 3,
+ .pre_div_width = 2,
+ },
+ .s = {
+ .src_sel_shift = 0,
+ .parent_map = lcc_pxo_pll4_map,
+ },
+ .freq_tbl = clk_tbl_aif_osr_393,
+ .clkr = {
+ .enable_reg = 0x48,
+ .enable_mask = BIT(9),
+ .hw.init = &(struct clk_init_data){
+ .name = "mi2s_osr_src",
+ .parent_names = lcc_pxo_pll4,
+ .num_parents = 2,
+ .ops = &clk_rcg_ops,
+ .flags = CLK_SET_RATE_GATE,
+ },
+ },
+};
+
+static const char *lcc_mi2s_parents[] = {
+ "mi2s_osr_src",
+};
+
+static struct clk_branch mi2s_osr_clk = {
+ .halt_reg = 0x50,
+ .halt_bit = 1,
+ .halt_check = BRANCH_HALT_ENABLE,
+ .clkr = {
+ .enable_reg = 0x48,
+ .enable_mask = BIT(17),
+ .hw.init = &(struct clk_init_data){
+ .name = "mi2s_osr_clk",
+ .parent_names = lcc_mi2s_parents,
+ .num_parents = 1,
+ .ops = &clk_branch_ops,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+ },
+};
+
+static struct clk_regmap_div mi2s_div_clk = {
+ .reg = 0x48,
+ .shift = 10,
+ .width = 4,
+ .clkr = {
+ .enable_reg = 0x48,
+ .enable_mask = BIT(15),
+ .hw.init = &(struct clk_init_data){
+ .name = "mi2s_div_clk",
+ .parent_names = lcc_mi2s_parents,
+ .num_parents = 1,
+ .ops = &clk_regmap_div_ops,
+ },
+ },
+};
+
+static struct clk_branch mi2s_bit_div_clk = {
+ .halt_reg = 0x50,
+ .halt_bit = 0,
+ .halt_check = BRANCH_HALT_ENABLE,
+ .clkr = {
+ .enable_reg = 0x48,
+ .enable_mask = BIT(15),
+ .hw.init = &(struct clk_init_data){
+ .name = "mi2s_bit_div_clk",
+ .parent_names = (const char *[]){ "mi2s_div_clk" },
+ .num_parents = 1,
+ .ops = &clk_branch_ops,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+ },
+};
+
+static struct clk_regmap_mux mi2s_bit_clk = {
+ .reg = 0x48,
+ .shift = 14,
+ .width = 1,
+ .clkr = {
+ .hw.init = &(struct clk_init_data){
+ .name = "mi2s_bit_clk",
+ .parent_names = (const char *[]){
+ "mi2s_bit_div_clk",
+ "mi2s_codec_clk",
+ },
+ .num_parents = 2,
+ .ops = &clk_regmap_mux_closest_ops,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+ },
+};
+
+#define CLK_AIF_OSR_DIV(prefix, _ns, _md, hr) \
+static struct clk_rcg prefix##_osr_src = { \
+ .ns_reg = _ns, \
+ .md_reg = _md, \
+ .mn = { \
+ .mnctr_en_bit = 8, \
+ .mnctr_reset_bit = 7, \
+ .mnctr_mode_shift = 5, \
+ .n_val_shift = 24, \
+ .m_val_shift = 8, \
+ .width = 8, \
+ }, \
+ .p = { \
+ .pre_div_shift = 3, \
+ .pre_div_width = 2, \
+ }, \
+ .s = { \
+ .src_sel_shift = 0, \
+ .parent_map = lcc_pxo_pll4_map, \
+ }, \
+ .freq_tbl = clk_tbl_aif_osr_393, \
+ .clkr = { \
+ .enable_reg = _ns, \
+ .enable_mask = BIT(9), \
+ .hw.init = &(struct clk_init_data){ \
+ .name = #prefix "_osr_src", \
+ .parent_names = lcc_pxo_pll4, \
+ .num_parents = 2, \
+ .ops = &clk_rcg_ops, \
+ .flags = CLK_SET_RATE_GATE, \
+ }, \
+ }, \
+}; \
+ \
+static const char *lcc_##prefix##_parents[] = { \
+ #prefix "_osr_src", \
+}; \
+ \
+static struct clk_branch prefix##_osr_clk = { \
+ .halt_reg = hr, \
+ .halt_bit = 1, \
+ .halt_check = BRANCH_HALT_ENABLE, \
+ .clkr = { \
+ .enable_reg = _ns, \
+ .enable_mask = BIT(21), \
+ .hw.init = &(struct clk_init_data){ \
+ .name = #prefix "_osr_clk", \
+ .parent_names = lcc_##prefix##_parents, \
+ .num_parents = 1, \
+ .ops = &clk_branch_ops, \
+ .flags = CLK_SET_RATE_PARENT, \
+ }, \
+ }, \
+}; \
+ \
+static struct clk_regmap_div prefix##_div_clk = { \
+ .reg = _ns, \
+ .shift = 10, \
+ .width = 8, \
+ .clkr = { \
+ .hw.init = &(struct clk_init_data){ \
+ .name = #prefix "_div_clk", \
+ .parent_names = lcc_##prefix##_parents, \
+ .num_parents = 1, \
+ .ops = &clk_regmap_div_ops, \
+ }, \
+ }, \
+}; \
+ \
+static struct clk_branch prefix##_bit_div_clk = { \
+ .halt_reg = hr, \
+ .halt_bit = 0, \
+ .halt_check = BRANCH_HALT_ENABLE, \
+ .clkr = { \
+ .enable_reg = _ns, \
+ .enable_mask = BIT(19), \
+ .hw.init = &(struct clk_init_data){ \
+ .name = #prefix "_bit_div_clk", \
+ .parent_names = (const char *[]){ \
+ #prefix "_div_clk" \
+ }, \
+ .num_parents = 1, \
+ .ops = &clk_branch_ops, \
+ .flags = CLK_SET_RATE_PARENT, \
+ }, \
+ }, \
+}; \
+ \
+static struct clk_regmap_mux prefix##_bit_clk = { \
+ .reg = _ns, \
+ .shift = 18, \
+ .width = 1, \
+ .clkr = { \
+ .hw.init = &(struct clk_init_data){ \
+ .name = #prefix "_bit_clk", \
+ .parent_names = (const char *[]){ \
+ #prefix "_bit_div_clk", \
+ #prefix "_codec_clk", \
+ }, \
+ .num_parents = 2, \
+ .ops = &clk_regmap_mux_closest_ops, \
+ .flags = CLK_SET_RATE_PARENT, \
+ }, \
+ }, \
+}
+
+CLK_AIF_OSR_DIV(codec_i2s_mic, 0x60, 0x64, 0x68);
+CLK_AIF_OSR_DIV(spare_i2s_mic, 0x78, 0x7c, 0x80);
+CLK_AIF_OSR_DIV(codec_i2s_spkr, 0x6c, 0x70, 0x74);
+CLK_AIF_OSR_DIV(spare_i2s_spkr, 0x84, 0x88, 0x8c);
+
+static struct freq_tbl clk_tbl_pcm_492[] = {
+ { 256000, P_PLL4, 4, 1, 480 },
+ { 512000, P_PLL4, 4, 1, 240 },
+ { 768000, P_PLL4, 4, 1, 160 },
+ { 1024000, P_PLL4, 4, 1, 120 },
+ { 1536000, P_PLL4, 4, 1, 80 },
+ { 2048000, P_PLL4, 4, 1, 60 },
+ { 3072000, P_PLL4, 4, 1, 40 },
+ { 4096000, P_PLL4, 4, 1, 30 },
+ { 6144000, P_PLL4, 4, 1, 20 },
+ { 8192000, P_PLL4, 4, 1, 15 },
+ { 12288000, P_PLL4, 4, 1, 10 },
+ { 24576000, P_PLL4, 4, 1, 5 },
+ { 27000000, P_PXO, 1, 0, 0 },
+ { }
+};
+
+static struct freq_tbl clk_tbl_pcm_393[] = {
+ { 256000, P_PLL4, 4, 1, 384 },
+ { 512000, P_PLL4, 4, 1, 192 },
+ { 768000, P_PLL4, 4, 1, 128 },
+ { 1024000, P_PLL4, 4, 1, 96 },
+ { 1536000, P_PLL4, 4, 1, 64 },
+ { 2048000, P_PLL4, 4, 1, 48 },
+ { 3072000, P_PLL4, 4, 1, 32 },
+ { 4096000, P_PLL4, 4, 1, 24 },
+ { 6144000, P_PLL4, 4, 1, 16 },
+ { 8192000, P_PLL4, 4, 1, 12 },
+ { 12288000, P_PLL4, 4, 1, 8 },
+ { 24576000, P_PLL4, 4, 1, 4 },
+ { 27000000, P_PXO, 1, 0, 0 },
+ { }
+};
+
+static struct clk_rcg pcm_src = {
+ .ns_reg = 0x54,
+ .md_reg = 0x58,
+ .mn = {
+ .mnctr_en_bit = 8,
+ .mnctr_reset_bit = 7,
+ .mnctr_mode_shift = 5,
+ .n_val_shift = 16,
+ .m_val_shift = 16,
+ .width = 16,
+ },
+ .p = {
+ .pre_div_shift = 3,
+ .pre_div_width = 2,
+ },
+ .s = {
+ .src_sel_shift = 0,
+ .parent_map = lcc_pxo_pll4_map,
+ },
+ .freq_tbl = clk_tbl_pcm_393,
+ .clkr = {
+ .enable_reg = 0x54,
+ .enable_mask = BIT(9),
+ .hw.init = &(struct clk_init_data){
+ .name = "pcm_src",
+ .parent_names = lcc_pxo_pll4,
+ .num_parents = 2,
+ .ops = &clk_rcg_ops,
+ .flags = CLK_SET_RATE_GATE,
+ },
+ },
+};
+
+static struct clk_branch pcm_clk_out = {
+ .halt_reg = 0x5c,
+ .halt_bit = 0,
+ .halt_check = BRANCH_HALT_ENABLE,
+ .clkr = {
+ .enable_reg = 0x54,
+ .enable_mask = BIT(11),
+ .hw.init = &(struct clk_init_data){
+ .name = "pcm_clk_out",
+ .parent_names = (const char *[]){ "pcm_src" },
+ .num_parents = 1,
+ .ops = &clk_branch_ops,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+ },
+};
+
+static struct clk_regmap_mux pcm_clk = {
+ .reg = 0x54,
+ .shift = 10,
+ .width = 1,
+ .clkr = {
+ .hw.init = &(struct clk_init_data){
+ .name = "pcm_clk",
+ .parent_names = (const char *[]){
+ "pcm_clk_out",
+ "pcm_codec_clk",
+ },
+ .num_parents = 2,
+ .ops = &clk_regmap_mux_closest_ops,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+ },
+};
+
+static struct clk_rcg slimbus_src = {
+ .ns_reg = 0xcc,
+ .md_reg = 0xd0,
+ .mn = {
+ .mnctr_en_bit = 8,
+ .mnctr_reset_bit = 7,
+ .mnctr_mode_shift = 5,
+ .n_val_shift = 16,
+ .m_val_shift = 16,
+ .width = 8,
+ },
+ .p = {
+ .pre_div_shift = 3,
+ .pre_div_width = 2,
+ },
+ .s = {
+ .src_sel_shift = 0,
+ .parent_map = lcc_pxo_pll4_map,
+ },
+ .freq_tbl = clk_tbl_aif_osr_393,
+ .clkr = {
+ .enable_reg = 0xcc,
+ .enable_mask = BIT(9),
+ .hw.init = &(struct clk_init_data){
+ .name = "slimbus_src",
+ .parent_names = lcc_pxo_pll4,
+ .num_parents = 2,
+ .ops = &clk_rcg_ops,
+ .flags = CLK_SET_RATE_GATE,
+ },
+ },
+};
+
+static const char *lcc_slimbus_parents[] = {
+ "slimbus_src",
+};
+
+static struct clk_branch audio_slimbus_clk = {
+ .halt_reg = 0xd4,
+ .halt_bit = 0,
+ .halt_check = BRANCH_HALT_ENABLE,
+ .clkr = {
+ .enable_reg = 0xcc,
+ .enable_mask = BIT(10),
+ .hw.init = &(struct clk_init_data){
+ .name = "audio_slimbus_clk",
+ .parent_names = lcc_slimbus_parents,
+ .num_parents = 1,
+ .ops = &clk_branch_ops,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+ },
+};
+
+static struct clk_branch sps_slimbus_clk = {
+ .halt_reg = 0xd4,
+ .halt_bit = 1,
+ .halt_check = BRANCH_HALT_ENABLE,
+ .clkr = {
+ .enable_reg = 0xcc,
+ .enable_mask = BIT(12),
+ .hw.init = &(struct clk_init_data){
+ .name = "sps_slimbus_clk",
+ .parent_names = lcc_slimbus_parents,
+ .num_parents = 1,
+ .ops = &clk_branch_ops,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+ },
+};
+
+static struct clk_regmap *lcc_msm8960_clks[] = {
+ [PLL4] = &pll4.clkr,
+ [MI2S_OSR_SRC] = &mi2s_osr_src.clkr,
+ [MI2S_OSR_CLK] = &mi2s_osr_clk.clkr,
+ [MI2S_DIV_CLK] = &mi2s_div_clk.clkr,
+ [MI2S_BIT_DIV_CLK] = &mi2s_bit_div_clk.clkr,
+ [MI2S_BIT_CLK] = &mi2s_bit_clk.clkr,
+ [PCM_SRC] = &pcm_src.clkr,
+ [PCM_CLK_OUT] = &pcm_clk_out.clkr,
+ [PCM_CLK] = &pcm_clk.clkr,
+ [SLIMBUS_SRC] = &slimbus_src.clkr,
+ [AUDIO_SLIMBUS_CLK] = &audio_slimbus_clk.clkr,
+ [SPS_SLIMBUS_CLK] = &sps_slimbus_clk.clkr,
+ [CODEC_I2S_MIC_OSR_SRC] = &codec_i2s_mic_osr_src.clkr,
+ [CODEC_I2S_MIC_OSR_CLK] = &codec_i2s_mic_osr_clk.clkr,
+ [CODEC_I2S_MIC_DIV_CLK] = &codec_i2s_mic_div_clk.clkr,
+ [CODEC_I2S_MIC_BIT_DIV_CLK] = &codec_i2s_mic_bit_div_clk.clkr,
+ [CODEC_I2S_MIC_BIT_CLK] = &codec_i2s_mic_bit_clk.clkr,
+ [SPARE_I2S_MIC_OSR_SRC] = &spare_i2s_mic_osr_src.clkr,
+ [SPARE_I2S_MIC_OSR_CLK] = &spare_i2s_mic_osr_clk.clkr,
+ [SPARE_I2S_MIC_DIV_CLK] = &spare_i2s_mic_div_clk.clkr,
+ [SPARE_I2S_MIC_BIT_DIV_CLK] = &spare_i2s_mic_bit_div_clk.clkr,
+ [SPARE_I2S_MIC_BIT_CLK] = &spare_i2s_mic_bit_clk.clkr,
+ [CODEC_I2S_SPKR_OSR_SRC] = &codec_i2s_spkr_osr_src.clkr,
+ [CODEC_I2S_SPKR_OSR_CLK] = &codec_i2s_spkr_osr_clk.clkr,
+ [CODEC_I2S_SPKR_DIV_CLK] = &codec_i2s_spkr_div_clk.clkr,
+ [CODEC_I2S_SPKR_BIT_DIV_CLK] = &codec_i2s_spkr_bit_div_clk.clkr,
+ [CODEC_I2S_SPKR_BIT_CLK] = &codec_i2s_spkr_bit_clk.clkr,
+ [SPARE_I2S_SPKR_OSR_SRC] = &spare_i2s_spkr_osr_src.clkr,
+ [SPARE_I2S_SPKR_OSR_CLK] = &spare_i2s_spkr_osr_clk.clkr,
+ [SPARE_I2S_SPKR_DIV_CLK] = &spare_i2s_spkr_div_clk.clkr,
+ [SPARE_I2S_SPKR_BIT_DIV_CLK] = &spare_i2s_spkr_bit_div_clk.clkr,
+ [SPARE_I2S_SPKR_BIT_CLK] = &spare_i2s_spkr_bit_clk.clkr,
+};
+
+static const struct regmap_config lcc_msm8960_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .max_register = 0xfc,
+ .fast_io = true,
+};
+
+static const struct qcom_cc_desc lcc_msm8960_desc = {
+ .config = &lcc_msm8960_regmap_config,
+ .clks = lcc_msm8960_clks,
+ .num_clks = ARRAY_SIZE(lcc_msm8960_clks),
+};
+
+static const struct of_device_id lcc_msm8960_match_table[] = {
+ { .compatible = "qcom,lcc-msm8960" },
+ { .compatible = "qcom,lcc-apq8064" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, lcc_msm8960_match_table);
+
+static int lcc_msm8960_probe(struct platform_device *pdev)
+{
+ u32 val;
+ struct regmap *regmap;
+
+ regmap = qcom_cc_map(pdev, &lcc_msm8960_desc);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ /* Use the correct frequency plan depending on speed of PLL4 */
+ val = regmap_read(regmap, 0x4, &val);
+ if (val == 0x12) {
+ slimbus_src.freq_tbl = clk_tbl_aif_osr_492;
+ mi2s_osr_src.freq_tbl = clk_tbl_aif_osr_492;
+ codec_i2s_mic_osr_src.freq_tbl = clk_tbl_aif_osr_492;
+ spare_i2s_mic_osr_src.freq_tbl = clk_tbl_aif_osr_492;
+ codec_i2s_spkr_osr_src.freq_tbl = clk_tbl_aif_osr_492;
+ spare_i2s_spkr_osr_src.freq_tbl = clk_tbl_aif_osr_492;
+ pcm_src.freq_tbl = clk_tbl_pcm_492;
+ }
+ /* Enable PLL4 source on the LPASS Primary PLL Mux */
+ regmap_write(regmap, 0xc4, 0x1);
+
+ return qcom_cc_really_probe(pdev, &lcc_msm8960_desc, regmap);
+}
+
+static int lcc_msm8960_remove(struct platform_device *pdev)
+{
+ qcom_cc_remove(pdev);
+ return 0;
+}
+
+static struct platform_driver lcc_msm8960_driver = {
+ .probe = lcc_msm8960_probe,
+ .remove = lcc_msm8960_remove,
+ .driver = {
+ .name = "lcc-msm8960",
+ .owner = THIS_MODULE,
+ .of_match_table = lcc_msm8960_match_table,
+ },
+};
+module_platform_driver(lcc_msm8960_driver);
+
+MODULE_DESCRIPTION("QCOM LCC MSM8960 Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:lcc-msm8960");
diff --git a/include/dt-bindings/clock/qcom,lcc-msm8960.h b/include/dt-bindings/clock/qcom,lcc-msm8960.h
new file mode 100644
index 000000000000..4fb2aa64d9fe
--- /dev/null
+++ b/include/dt-bindings/clock/qcom,lcc-msm8960.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _DT_BINDINGS_CLK_LCC_MSM8960_H
+#define _DT_BINDINGS_CLK_LCC_MSM8960_H
+
+#define PLL4 0
+#define MI2S_OSR_SRC 1
+#define MI2S_OSR_CLK 2
+#define MI2S_DIV_CLK 3
+#define MI2S_BIT_DIV_CLK 4
+#define MI2S_BIT_CLK 5
+#define PCM_SRC 6
+#define PCM_CLK_OUT 7
+#define PCM_CLK 8
+#define SLIMBUS_SRC 9
+#define AUDIO_SLIMBUS_CLK 10
+#define SPS_SLIMBUS_CLK 11
+#define CODEC_I2S_MIC_OSR_SRC 12
+#define CODEC_I2S_MIC_OSR_CLK 13
+#define CODEC_I2S_MIC_DIV_CLK 14
+#define CODEC_I2S_MIC_BIT_DIV_CLK 15
+#define CODEC_I2S_MIC_BIT_CLK 16
+#define SPARE_I2S_MIC_OSR_SRC 17
+#define SPARE_I2S_MIC_OSR_CLK 18
+#define SPARE_I2S_MIC_DIV_CLK 19
+#define SPARE_I2S_MIC_BIT_DIV_CLK 20
+#define SPARE_I2S_MIC_BIT_CLK 21
+#define CODEC_I2S_SPKR_OSR_SRC 22
+#define CODEC_I2S_SPKR_OSR_CLK 23
+#define CODEC_I2S_SPKR_DIV_CLK 24
+#define CODEC_I2S_SPKR_BIT_DIV_CLK 25
+#define CODEC_I2S_SPKR_BIT_CLK 26
+#define SPARE_I2S_SPKR_OSR_SRC 27
+#define SPARE_I2S_SPKR_OSR_CLK 28
+#define SPARE_I2S_SPKR_DIV_CLK 29
+#define SPARE_I2S_SPKR_BIT_DIV_CLK 30
+#define SPARE_I2S_SPKR_BIT_CLK 31
+
+#endif
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v2 8/8] devicetree: bindings: Document qcom,lcc
2014-11-26 1:35 [PATCH v2 0/8] qcom audio clock control drivers Stephen Boyd
` (6 preceding siblings ...)
2014-11-26 1:35 ` [PATCH v2 7/8] clk: qcom: Add MSM8960/APQ8064 " Stephen Boyd
@ 2014-11-26 1:35 ` Stephen Boyd
7 siblings, 0 replies; 10+ messages in thread
From: Stephen Boyd @ 2014-11-26 1:35 UTC (permalink / raw)
To: linux-arm-kernel
From: Rajendra Nayak <rnayak@codeaurora.org>
Document the LPASS (low power audio subsystem) clock controller
found on Qualcomm devices.
Cc: <devicetree@vger.kernel.org>
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
.../devicetree/bindings/clock/qcom,lcc.txt | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/qcom,lcc.txt
diff --git a/Documentation/devicetree/bindings/clock/qcom,lcc.txt b/Documentation/devicetree/bindings/clock/qcom,lcc.txt
new file mode 100644
index 000000000000..dd755be63a01
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/qcom,lcc.txt
@@ -0,0 +1,21 @@
+Qualcomm LPASS Clock & Reset Controller Binding
+------------------------------------------------
+
+Required properties :
+- compatible : shall contain only one of the following:
+
+ "qcom,lcc-msm8960"
+ "qcom,lcc-apq8064"
+ "qcom,lcc-ipq8064"
+
+- reg : shall contain base register location and length
+- #clock-cells : shall contain 1
+- #reset-cells : shall contain 1
+
+Example:
+ clock-controller at 28000000 {
+ compatible = "qcom,lcc-ipq8064";
+ reg = <0x28000000 0x1000>;
+ #clock-cells = <1>;
+ #reset-cells = <1>;
+ };
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 10+ messages in thread