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Arizona FLL fixes and Clocking Improvements

PATCH In review Charles Keepax 4 participants 20 messages Sep 2, 2016 – Oct 24, 2016

Subsystems (6)
Sound ASoC Multifunction devices (MFD) Wolfson microelectronics drivers +2 more subsystems
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Charles Keepax

author
#0 lore raw

cover Arizona FLL fixes and Clocking Improvements

Hi,

The first 3 patches in this series fix some small issues with the FLL configuration in the driver. The second 3 patches add support for requesting the input clocks for the CODEC through the clock framework. This is some what of an intermediate step until all the clocking itself in the CODEC can be brought under the clock framework but as there are machine drivers that want to be merged now with source clocks that require gating and difficult to resolve issues between the SPI and clock framework an intermediate solution seems warranted.

Whilst the two halfs of this series do fairly different things, I have sent them as once series as they touch a lot of the same code, so this seemed the simpler approach to pushing them both through. The series is based of Mark's ASoC for-next tree.

Thanks,
Charles

Charles Keepax (5):
ASoC: arizona: Correct handling of FLL theta in synchroniser mode
ASoC: arizona: Allow specification of base for arizona_is_enabled_fll
ASoC: arizona: Avoid changing SYNC_ENA whilst the FLL_ENA is set
ASoC: arizona: Add gating for clock when used for direct MCLK
ASoC: arizona: Add gating for source clocks of the FLLs

Sylwester Nawrocki (1):
mfd: arizona: Add gating of external MCLKn clocks

 drivers/mfd/arizona-core.c       |  30 +++++++++-
 include/linux/mfd/arizona/core.h |   9 +++
 sound/soc/codecs/arizona.c       | 124 +++++++++++++++++++++++++++++++++++----
 sound/soc/codecs/arizona.h       |   2 +
 sound/soc/codecs/cs47l24.c       |   6 +-
 sound/soc/codecs/wm5102.c        |   9 ++-
 sound/soc/codecs/wm5110.c        |  10 +++-
 sound/soc/codecs/wm8997.c        |   9 ++-
 sound/soc/codecs/wm8998.c        |   6 +-
 9 files changed, 179 insertions(+), 26 deletions(-)
Signature · 1 line
2.1.4
author
#1 lore raw

PATCH 1/6 ASoC: arizona: Correct handling of FLL theta in synchroniser mode

Theta/lambda is used to give the fractional portion of the FLL frequency multiplication. When the synchroniser is active the reference path lambda value is hard coded in the hardware to 65536. This patch corrects the handling of theta such that it is scaled to match this denominator, when the synchroniser is active.

Signed-off-by Charles Keepax <[email protected]>
---
 sound/soc/codecs/arizona.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
sound/soc/codecs/arizona.c +6 -2
index ccb3ca2..ded235f 100644
@@ -1920,8 +1920,8 @@ static struct {
 
 struct arizona_fll_cfg {
 	int n;
-	int theta;
-	int lambda;
+	unsigned int theta;
+	unsigned int lambda;
 	int refdiv;
 	int outdiv;
 	int fratio;

@@ -2233,6 +2233,10 @@ static int arizona_enable_fll(struct arizona_fll *fll)
 	    fll->ref_src != fll->sync_src) {
 		arizona_calc_fll(fll, &cfg, fll->ref_freq, false);
 
+		/* Ref path hardcodes lambda to 65536 when sync is on */
+		if (fll->sync_src >= 0 && cfg.lambda)
+			cfg.theta = (cfg.theta * (1 << 16)) / cfg.lambda;
+
 		arizona_apply_fll(arizona, fll->base, &cfg, fll->ref_src,
 				  false);
 		if (fll->sync_src >= 0) {
Signature · 1 line
2.1.4
maintainer
#2 lore raw

Applied "ASoC: arizona: Correct handling of FLL theta in synchroniser mode" to the asoc tree

The patch

ASoC: arizona: Correct handling of FLL theta in synchroniser mode

has been applied to the asoc tree at

git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks,
Mark

Quoted 1 line

From e87d9ae8886783f3a5a8dd6863e8261783214e3b Mon Sep 17 00:00:00 2001

From: Charles Keepax <[email protected]>
Date: Fri, 2 Sep 2016 16:52:43 +0100
Subject: [PATCH] ASoC: arizona: Correct handling of FLL theta in synchroniser
mode

Theta/lambda is used to give the fractional portion of the FLL frequency multiplication. When the synchroniser is active the reference path lambda value is hard coded in the hardware to 65536. This patch corrects the handling of theta such that it is scaled to match this denominator, when the synchroniser is active.

Signed-off-by Charles Keepax <[email protected]>
Signed-off-by Mark Brown <[email protected]>
---
 sound/soc/codecs/arizona.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
sound/soc/codecs/arizona.c +6 -2
index ccb3ca2f77a4..ded235f3090f 100644
@@ -1920,8 +1920,8 @@ static struct {
 
 struct arizona_fll_cfg {
 	int n;
-	int theta;
-	int lambda;
+	unsigned int theta;
+	unsigned int lambda;
 	int refdiv;
 	int outdiv;
 	int fratio;

@@ -2233,6 +2233,10 @@ static int arizona_enable_fll(struct arizona_fll *fll)
 	    fll->ref_src != fll->sync_src) {
 		arizona_calc_fll(fll, &cfg, fll->ref_freq, false);
 
+		/* Ref path hardcodes lambda to 65536 when sync is on */
+		if (fll->sync_src >= 0 && cfg.lambda)
+			cfg.theta = (cfg.theta * (1 << 16)) / cfg.lambda;
+
 		arizona_apply_fll(arizona, fll->base, &cfg, fll->ref_src,
 				  false);
 		if (fll->sync_src >= 0) {
Signature · 1 line
2.9.3
author
#3 lore raw

PATCH 2/6 ASoC: arizona: Allow specification of base for arizona_is_enabled_fll

In reply to Charles Keepax

In preparation for future improvements allow a base to be passed to arizona_is_enabled_fll, this will allow it to be used to check the state of the synchroniser path as well.

Signed-off-by Charles Keepax <[email protected]>
---
 sound/soc/codecs/arizona.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
sound/soc/codecs/arizona.c +3 -3
index ded235f..463979f4 100644
@@ -2188,13 +2188,13 @@ static void arizona_apply_fll(struct arizona *arizona, unsigned int base,
 				 ARIZONA_FLL1_CTRL_UPD | cfg->n);
 }
 
-static int arizona_is_enabled_fll(struct arizona_fll *fll)
+static int arizona_is_enabled_fll(struct arizona_fll *fll, int base)
 {
 	struct arizona *arizona = fll->arizona;
 	unsigned int reg;
 	int ret;
 
-	ret = regmap_read(arizona->regmap, fll->base + 1, &reg);
+	ret = regmap_read(arizona->regmap, base + 1, &reg);
 	if (ret != 0) {
 		arizona_fll_err(fll, "Failed to read current state: %d\n",
 				ret);

@@ -2208,7 +2208,7 @@ static int arizona_enable_fll(struct arizona_fll *fll)
 {
 	struct arizona *arizona = fll->arizona;
 	bool use_sync = false;
-	int already_enabled = arizona_is_enabled_fll(fll);
+	int already_enabled = arizona_is_enabled_fll(fll, fll->base);
 	struct arizona_fll_cfg cfg;
 	int i;
 	unsigned int val;
Signature · 1 line
2.1.4
maintainer
#4 lore raw

Applied "ASoC: arizona: Allow specification of base for arizona_is_enabled_fll" to the asoc tree

The patch

ASoC: arizona: Allow specification of base for arizona_is_enabled_fll

has been applied to the asoc tree at

git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks,
Mark

Quoted 1 line

From 62bb7104687c0ac1e85b1cf45a85a20b492b06a6 Mon Sep 17 00:00:00 2001

From: Charles Keepax <[email protected]>
Date: Fri, 2 Sep 2016 16:52:44 +0100
Subject: [PATCH] ASoC: arizona: Allow specification of base for
arizona_is_enabled_fll

In preparation for future improvements allow a base to be passed to arizona_is_enabled_fll, this will allow it to be used to check the state of the synchroniser path as well.

Signed-off-by Charles Keepax <[email protected]>
Signed-off-by Mark Brown <[email protected]>
---
 sound/soc/codecs/arizona.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
sound/soc/codecs/arizona.c +3 -3
index ecfdbfcae366..5455d0e87f0f 100644
@@ -2188,13 +2188,13 @@ static void arizona_apply_fll(struct arizona *arizona, unsigned int base,
 				 ARIZONA_FLL1_CTRL_UPD | cfg->n);
 }
 
-static int arizona_is_enabled_fll(struct arizona_fll *fll)
+static int arizona_is_enabled_fll(struct arizona_fll *fll, int base)
 {
 	struct arizona *arizona = fll->arizona;
 	unsigned int reg;
 	int ret;
 
-	ret = regmap_read(arizona->regmap, fll->base + 1, &reg);
+	ret = regmap_read(arizona->regmap, base + 1, &reg);
 	if (ret != 0) {
 		arizona_fll_err(fll, "Failed to read current state: %d\n",
 				ret);

@@ -2208,7 +2208,7 @@ static int arizona_enable_fll(struct arizona_fll *fll)
 {
 	struct arizona *arizona = fll->arizona;
 	bool use_sync = false;
-	int already_enabled = arizona_is_enabled_fll(fll);
+	int already_enabled = arizona_is_enabled_fll(fll, fll->base);
 	struct arizona_fll_cfg cfg;
 	int i;
 	unsigned int val;
Signature · 1 line
2.8.1
author
#5 lore raw

PATCH 3/6 ASoC: arizona: Avoid changing SYNC_ENA whilst the FLL_ENA is set

In reply to Charles Keepax

For best performance changing the synchroniser state whilst the FLL is running should be avoided. As this has been done fairly regularly in practice rather than hard preventing this, simply improve the FLL enable sequence and give a warning if the user changes the synchroniser state.

Signed-off-by Charles Keepax <[email protected]>
---
 sound/soc/codecs/arizona.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)
sound/soc/codecs/arizona.c +8 -2
index 463979f4..be24387 100644
@@ -2209,12 +2209,15 @@ static int arizona_enable_fll(struct arizona_fll *fll)
 	struct arizona *arizona = fll->arizona;
 	bool use_sync = false;
 	int already_enabled = arizona_is_enabled_fll(fll, fll->base);
+	int sync_enabled = arizona_is_enabled_fll(fll, fll->base + 0x10);
 	struct arizona_fll_cfg cfg;
 	int i;
 	unsigned int val;
 
 	if (already_enabled < 0)
 		return already_enabled;
+	if (sync_enabled < 0)
+		return sync_enabled;
 
 	if (already_enabled) {
 		/* Facilitate smooth refclk across the transition */

@@ -2259,6 +2262,9 @@ static int arizona_enable_fll(struct arizona_fll *fll)
 		return -EINVAL;
 	}
 
+	if (already_enabled && !!sync_enabled != use_sync)
+		arizona_fll_warn(fll, "Synchroniser changed on active FLL\n");
+
 	/*
 	 * Increase the bandwidth if we're not using a low frequency
 	 * sync source.

@@ -2274,12 +2280,12 @@ static int arizona_enable_fll(struct arizona_fll *fll)
 	if (!already_enabled)
 		pm_runtime_get_sync(arizona->dev);
 
-	regmap_update_bits_async(arizona->regmap, fll->base + 1,
-				 ARIZONA_FLL1_ENA, ARIZONA_FLL1_ENA);
 	if (use_sync)
 		regmap_update_bits_async(arizona->regmap, fll->base + 0x11,
 					 ARIZONA_FLL1_SYNC_ENA,
 					 ARIZONA_FLL1_SYNC_ENA);
+	regmap_update_bits_async(arizona->regmap, fll->base + 1,
+				 ARIZONA_FLL1_ENA, ARIZONA_FLL1_ENA);
 
 	if (already_enabled)
 		regmap_update_bits_async(arizona->regmap, fll->base + 1,
Signature · 1 line
2.1.4
author
#6 lore raw

PATCH 4/6 mfd: arizona: Add gating of external MCLKn clocks

In reply to Charles Keepax

From: Sylwester Nawrocki <[email protected]>

This patch adds requesting of the clocks supplied on MCLK1, MCLK2 pins, gating of the 32k clock is added to the arizona_clk32k_enable(), arizona_clk32k_disable() helpers.

It's a temporary change until the CODEC's clock controller gets exposed through the clk API and is helpful for board configurations where the MCLK clocks are not provided by always on oscillators.

Signed-off-by Sylwester Nawrocki <[email protected]>
Signed-off-by Charles Keepax <[email protected]>
---
 drivers/mfd/arizona-core.c       | 30 ++++++++++++++++++++++++++++--
 include/linux/mfd/arizona/core.h |  9 +++++++++
 2 files changed, 37 insertions(+), 2 deletions(-)
drivers/mfd/arizona-core.c +28 -2
index e4f97b3..4fa0fae 100644
@@ -10,6 +10,7 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/gpio.h>

@@ -49,7 +50,15 @@ int arizona_clk32k_enable(struct arizona *arizona)
 		case ARIZONA_32KZ_MCLK1:
 			ret = pm_runtime_get_sync(arizona->dev);
 			if (ret != 0)
-				goto out;
+				goto err_ref;
+			ret = clk_prepare_enable(arizona->mclk[ARIZONA_MCLK1]);
+			if (ret != 0)
+				goto err_pm;
+			break;
+		case ARIZONA_32KZ_MCLK2:
+			ret = clk_prepare_enable(arizona->mclk[ARIZONA_MCLK2]);
+			if (ret != 0)
+				goto err_ref;
 			break;
 		}
 

@@ -58,7 +67,9 @@ int arizona_clk32k_enable(struct arizona *arizona)
 					 ARIZONA_CLK_32K_ENA);
 	}
 
-out:
+err_pm:
+	pm_runtime_put_sync(arizona->dev);
+err_ref:
 	if (ret != 0)
 		arizona->clk32k_ref--;
 

@@ -83,6 +94,10 @@ int arizona_clk32k_disable(struct arizona *arizona)
 		switch (arizona->pdata.clk32k_src) {
 		case ARIZONA_32KZ_MCLK1:
 			pm_runtime_put_sync(arizona->dev);
+			clk_disable_unprepare(arizona->mclk[ARIZONA_MCLK1]);
+			break;
+		case ARIZONA_32KZ_MCLK2:
+			clk_disable_unprepare(arizona->mclk[ARIZONA_MCLK2]);
 			break;
 		}
 	}

@@ -1000,6 +1015,7 @@ static const struct mfd_cell wm8998_devs[] = {
 
 int arizona_dev_init(struct arizona *arizona)
 {
+	const char * const mclk_name[] = { "mclk1", "mclk2" };
 	struct device *dev = arizona->dev;
 	const char *type_name = NULL;
 	unsigned int reg, val, mask;

@@ -1016,6 +1032,16 @@ int arizona_dev_init(struct arizona *arizona)
 	else
 		arizona_of_get_core_pdata(arizona);
 
+	BUILD_BUG_ON(ARRAY_SIZE(arizona->mclk) != ARRAY_SIZE(mclk_name));
+	for (i = 0; i < ARRAY_SIZE(arizona->mclk); i++) {
+		arizona->mclk[i] = devm_clk_get(arizona->dev, mclk_name[i]);
+		if (IS_ERR(arizona->mclk[i])) {
+			dev_info(arizona->dev, "Failed to get %s: %ld\n",
+				 mclk_name[i], PTR_ERR(arizona->mclk[i]));
+			arizona->mclk[i] = NULL;
+		}
+	}
+
 	regcache_cache_only(arizona->regmap, true);
 
 	switch (arizona->type) {
include/linux/mfd/arizona/core.h +9 -0
index 58ab4c0..b9909bb 100644
@@ -13,6 +13,7 @@
 #ifndef _WM_ARIZONA_CORE_H
 #define _WM_ARIZONA_CORE_H
 
+#include <linux/clk.h>
 #include <linux/interrupt.h>
 #include <linux/notifier.h>
 #include <linux/regmap.h>

@@ -21,6 +22,12 @@
 
 #define ARIZONA_MAX_CORE_SUPPLIES 2
 
+enum {
+	ARIZONA_MCLK1,
+	ARIZONA_MCLK2,
+	ARIZONA_NUM_MCLK
+};
+
 enum arizona_type {
 	WM5102 = 1,
 	WM5110 = 2,

@@ -139,6 +146,8 @@ struct arizona {
 	struct mutex clk_lock;
 	int clk32k_ref;
 
+	struct clk *mclk[ARIZONA_NUM_MCLK];
+
 	bool ctrlif_error;
 
 	struct snd_soc_dapm_context *dapm;
Signature · 1 line
2.1.4
#7 lore raw

Re: [PATCH 4/6] mfd: arizona: Add gating of external MCLKn clocks

Quoted 10 lines · Charles Keepax

From: Sylwester Nawrocki <[email protected]>

This patch adds requesting of the clocks supplied on MCLK1, MCLK2 pins, gating of the 32k clock is added to the arizona_clk32k_enable(), arizona_clk32k_disable() helpers.

It's a temporary change until the CODEC's clock controller gets exposed through the clk API and is helpful for board configurations where the MCLK clocks are not provided by always on oscillators.

Quoted 6 lines
Signed-off-by Sylwester Nawrocki <[email protected]>
Signed-off-by Charles Keepax <[email protected]>
---
 drivers/mfd/arizona-core.c       | 30 ++++++++++++++++++++++++++++--
 include/linux/mfd/arizona/core.h |  9 +++++++++
 2 files changed, 37 insertions(+), 2 deletions(-)
Acked-for-MFD-by Lee Jones <[email protected]>

Can I take this?

Quoted 110 lines
drivers/mfd/arizona-core.c +28 -2
index e4f97b3..4fa0fae 100644
@@ -10,6 +10,7 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/gpio.h>

@@ -49,7 +50,15 @@ int arizona_clk32k_enable(struct arizona *arizona)
 		case ARIZONA_32KZ_MCLK1:
 			ret = pm_runtime_get_sync(arizona->dev);
 			if (ret != 0)
-				goto out;
+				goto err_ref;
+			ret = clk_prepare_enable(arizona->mclk[ARIZONA_MCLK1]);
+			if (ret != 0)
+				goto err_pm;
+			break;
+		case ARIZONA_32KZ_MCLK2:
+			ret = clk_prepare_enable(arizona->mclk[ARIZONA_MCLK2]);
+			if (ret != 0)
+				goto err_ref;
 			break;
 		}
 

@@ -58,7 +67,9 @@ int arizona_clk32k_enable(struct arizona *arizona)
 					 ARIZONA_CLK_32K_ENA);
 	}
 
-out:
+err_pm:
+	pm_runtime_put_sync(arizona->dev);
+err_ref:
 	if (ret != 0)
 		arizona->clk32k_ref--;
 

@@ -83,6 +94,10 @@ int arizona_clk32k_disable(struct arizona *arizona)
 		switch (arizona->pdata.clk32k_src) {
 		case ARIZONA_32KZ_MCLK1:
 			pm_runtime_put_sync(arizona->dev);
+			clk_disable_unprepare(arizona->mclk[ARIZONA_MCLK1]);
+			break;
+		case ARIZONA_32KZ_MCLK2:
+			clk_disable_unprepare(arizona->mclk[ARIZONA_MCLK2]);
 			break;
 		}
 	}

@@ -1000,6 +1015,7 @@ static const struct mfd_cell wm8998_devs[] = {
 
 int arizona_dev_init(struct arizona *arizona)
 {
+	const char * const mclk_name[] = { "mclk1", "mclk2" };
 	struct device *dev = arizona->dev;
 	const char *type_name = NULL;
 	unsigned int reg, val, mask;

@@ -1016,6 +1032,16 @@ int arizona_dev_init(struct arizona *arizona)
 	else
 		arizona_of_get_core_pdata(arizona);
 
+	BUILD_BUG_ON(ARRAY_SIZE(arizona->mclk) != ARRAY_SIZE(mclk_name));
+	for (i = 0; i < ARRAY_SIZE(arizona->mclk); i++) {
+		arizona->mclk[i] = devm_clk_get(arizona->dev, mclk_name[i]);
+		if (IS_ERR(arizona->mclk[i])) {
+			dev_info(arizona->dev, "Failed to get %s: %ld\n",
+				 mclk_name[i], PTR_ERR(arizona->mclk[i]));
+			arizona->mclk[i] = NULL;
+		}
+	}
+
 	regcache_cache_only(arizona->regmap, true);
 
 	switch (arizona->type) {
include/linux/mfd/arizona/core.h +9 -0
index 58ab4c0..b9909bb 100644
@@ -13,6 +13,7 @@
 #ifndef _WM_ARIZONA_CORE_H
 #define _WM_ARIZONA_CORE_H
 
+#include <linux/clk.h>
 #include <linux/interrupt.h>
 #include <linux/notifier.h>
 #include <linux/regmap.h>

@@ -21,6 +22,12 @@
 
 #define ARIZONA_MAX_CORE_SUPPLIES 2
 
+enum {
+	ARIZONA_MCLK1,
+	ARIZONA_MCLK2,
+	ARIZONA_NUM_MCLK
+};
+
 enum arizona_type {
 	WM5102 = 1,
 	WM5110 = 2,

@@ -139,6 +146,8 @@ struct arizona {
 	struct mutex clk_lock;
 	int clk32k_ref;
 
+	struct clk *mclk[ARIZONA_NUM_MCLK];
+
 	bool ctrlif_error;
 
 	struct snd_soc_dapm_context *dapm;
Signature · 4 lines
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
author
#8 lore raw

Re: [PATCH 4/6] mfd: arizona: Add gating of external MCLKn clocks

Quoted 19 lines · Lee Jones
Quoted 10 lines · Charles Keepax

From: Sylwester Nawrocki <[email protected]>

This patch adds requesting of the clocks supplied on MCLK1, MCLK2 pins, gating of the 32k clock is added to the arizona_clk32k_enable(), arizona_clk32k_disable() helpers.

It's a temporary change until the CODEC's clock controller gets exposed through the clk API and is helpful for board configurations where the MCLK clocks are not provided by always on oscillators.

Quoted 6 lines
Signed-off-by Sylwester Nawrocki <[email protected]>
Signed-off-by Charles Keepax <[email protected]>
---
 drivers/mfd/arizona-core.c       | 30 ++++++++++++++++++++++++++++--
 include/linux/mfd/arizona/core.h |  9 +++++++++
 2 files changed, 37 insertions(+), 2 deletions(-)
Quoted 4 lines
Acked-for-MFD-by Lee Jones <[email protected]>

Can I take this?

The two following ASoC patches depend on it, so its probably slightly easier if they go through together.

Thanks,
Charles

#9 lore raw

Re: [PATCH 4/6] mfd: arizona: Add gating of external MCLKn clocks

Quoted 20 lines · Charles Keepax
Quoted 19 lines · Lee Jones
Quoted 16 lines · Charles Keepax

From: Sylwester Nawrocki <[email protected]>

This patch adds requesting of the clocks supplied on MCLK1, MCLK2 pins, gating of the 32k clock is added to the arizona_clk32k_enable(), arizona_clk32k_disable() helpers.

It's a temporary change until the CODEC's clock controller gets exposed through the clk API and is helpful for board configurations where the MCLK clocks are not provided by always on oscillators.

Signed-off-by Sylwester Nawrocki <[email protected]>
Signed-off-by Charles Keepax <[email protected]>
---
 drivers/mfd/arizona-core.c       | 30 ++++++++++++++++++++++++++++--
 include/linux/mfd/arizona/core.h |  9 +++++++++
 2 files changed, 37 insertions(+), 2 deletions(-)
Quoted 7 lines
Quoted 4 lines
Acked-for-MFD-by Lee Jones <[email protected]>

Can I take this?

The two following ASoC patches depend on it, so its probably slightly easier if they go through together.

Okay, let me know when you have all your Acks.

Signature · 4 lines
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
author
#10 lore raw

Re: [PATCH 4/6] mfd: arizona: Add gating of external MCLKn clocks

Quoted 24 lines · Lee Jones
Quoted 22 lines · Charles Keepax
Quoted 21 lines · Lee Jones
Quoted 10 lines · Charles Keepax

From: Sylwester Nawrocki <[email protected]>

This patch adds requesting of the clocks supplied on MCLK1, MCLK2 pins, gating of the 32k clock is added to the arizona_clk32k_enable(), arizona_clk32k_disable() helpers.

It's a temporary change until the CODEC's clock controller gets exposed through the clk API and is helpful for board configurations where the MCLK clocks are not provided by always on oscillators.

Quoted 6 lines
Signed-off-by Sylwester Nawrocki <[email protected]>
Signed-off-by Charles Keepax <[email protected]>
---
 drivers/mfd/arizona-core.c       | 30 ++++++++++++++++++++++++++++--
 include/linux/mfd/arizona/core.h |  9 +++++++++
 2 files changed, 37 insertions(+), 2 deletions(-)
Acked-for-MFD-by Lee Jones <[email protected]>
Quoted 8 lines
Quoted 5 lines
Quoted 2 lines

Can I take this?

The two following ASoC patches depend on it, so its probably slightly easier if they go through together.

Okay, let me know when you have all your Acks.

Hi Lee, I see you have merged this patch on your public MFD branch, is it possible to send Mark a branch to pull from now? So we can get the other two patches merged.

Thanks,
Charles

#11 lore raw

Re: [PATCH 4/6] mfd: arizona: Add gating of external MCLKn clocks

Quoted 31 lines · Charles Keepax
Quoted 30 lines · Lee Jones
Quoted 27 lines · Charles Keepax
Quoted 19 lines · Lee Jones
Quoted 10 lines · Charles Keepax

From: Sylwester Nawrocki <[email protected]>

This patch adds requesting of the clocks supplied on MCLK1, MCLK2 pins, gating of the 32k clock is added to the arizona_clk32k_enable(), arizona_clk32k_disable() helpers.

It's a temporary change until the CODEC's clock controller gets exposed through the clk API and is helpful for board configurations where the MCLK clocks are not provided by always on oscillators.

Quoted 6 lines
Signed-off-by Sylwester Nawrocki <[email protected]>
Signed-off-by Charles Keepax <[email protected]>
---
 drivers/mfd/arizona-core.c       | 30 ++++++++++++++++++++++++++++--
 include/linux/mfd/arizona/core.h |  9 +++++++++
 2 files changed, 37 insertions(+), 2 deletions(-)
Quoted 4 lines
Acked-for-MFD-by Lee Jones <[email protected]>

Can I take this?

The two following ASoC patches depend on it, so its probably slightly easier if they go through together.

Quoted 6 lines
Quoted 2 lines

Okay, let me know when you have all your Acks.

Hi Lee, I see you have merged this patch on your public MFD branch, is it possible to send Mark a branch to pull from now? So we can get the other two patches merged.

Done.

Signature · 4 lines
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
maintainer
#12 lore raw

Re: [PATCH 4/6] mfd: arizona: Add gating of external MCLKn clocks

In reply to Lee Jones
Quoted 5 lines · Lee Jones

On Fri, 02 Sep 2016, Charles Keepax wrote:

Acked-for-MFD-by Lee Jones <[email protected]>

Can I take this?

The easiest thing would be if you applied it and then sent me a pull request.

#13 lore raw

[GIT PULL] Immutable branch between MFD and Regulator due for the v4.9 merge window

Mark,

As requested.

Quoted 9 lines · Mark Brown
Quoted 5 lines · Lee Jones

On Fri, 02 Sep 2016, Charles Keepax wrote:

Acked-for-MFD-by Lee Jones <[email protected]>

Can I take this?

The easiest thing would be if you applied it and then sent me a pull request.

The following changes since commit 29b4817d4018df78086157ea3a55c1d9424a7cfc:

Linux 4.8-rc1 (2016-08-07 18:18:00 -0700)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git ib-mfd-regulator-v4.9-1

for you to fetch changes up to cdd8da8cc66b3d205120560649e530978ccbc567:

mfd: arizona: Add gating of external MCLKn clocks (2016-10-04 15:46:07 +0100)

----------------------------------------------------------------
Immutable branch between MFD and Regulator due for the v4.9 merge window

----------------------------------------------------------------
Sylwester Nawrocki (1):
mfd: arizona: Add gating of external MCLKn clocks

 drivers/mfd/arizona-core.c       | 30 ++++++++++++++++++++++++++++--
 include/linux/mfd/arizona/core.h |  9 +++++++++
 2 files changed, 37 insertions(+), 2 deletions(-)
Signature · 4 lines
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
author
#14 lore raw

PATCH 5/6 ASoC: arizona: Add gating for clock when used for direct MCLK

In reply to Charles Keepax

Whilst ultimately we would like to move all the clocking over to the clock framework, as an intermediate step to get people going for now gating the source clocks for SYSCLK/ASYNCCLK when they are configured to come directly from an MCLK pin.

Signed-off-by Charles Keepax <[email protected]>
---
 sound/soc/codecs/arizona.c | 40 ++++++++++++++++++++++++++++++++++++++++
 sound/soc/codecs/arizona.h |  2 ++
 sound/soc/codecs/cs47l24.c |  6 ++++--
 sound/soc/codecs/wm5102.c  |  9 +++++++--
 sound/soc/codecs/wm5110.c  | 10 +++++++---
 sound/soc/codecs/wm8997.c  |  9 +++++++--
 sound/soc/codecs/wm8998.c  |  6 ++++--
 7 files changed, 71 insertions(+), 11 deletions(-)
sound/soc/codecs/arizona.c +40 -0
index be24387..2a019e9 100644
@@ -1195,6 +1195,46 @@ static int arizona_set_opclk(struct snd_soc_codec *codec, unsigned int clk,
 	return -EINVAL;
 }
 
+int arizona_clk_ev(struct snd_soc_dapm_widget *w,
+		   struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
+	struct arizona *arizona = dev_get_drvdata(codec->dev->parent);
+	unsigned int val;
+	int clk_idx;
+	int ret;
+
+	ret = regmap_read(arizona->regmap, w->reg, &val);
+	if (ret) {
+		dev_err(codec->dev, "Failed to check clock source: %d\n", ret);
+		return ret;
+	}
+
+	val = (val & ARIZONA_SYSCLK_SRC_MASK) >> ARIZONA_SYSCLK_SRC_SHIFT;
+
+	switch (val) {
+	case ARIZONA_CLK_SRC_MCLK1:
+		clk_idx = ARIZONA_MCLK1;
+		break;
+	case ARIZONA_CLK_SRC_MCLK2:
+		clk_idx = ARIZONA_MCLK2;
+		break;
+	default:
+		return 0;
+	}
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		return clk_prepare_enable(arizona->mclk[clk_idx]);
+	case SND_SOC_DAPM_POST_PMD:
+		clk_disable_unprepare(arizona->mclk[clk_idx]);
+		return 0;
+	default:
+		return 0;
+	}
+}
+EXPORT_SYMBOL_GPL(arizona_clk_ev);
+
 int arizona_set_sysclk(struct snd_soc_codec *codec, int clk_id,
 		       int source, unsigned int freq, int dir)
 {
sound/soc/codecs/arizona.h +2 -0
index 69da1ef..1728771 100644
@@ -272,6 +272,8 @@ extern int arizona_eq_coeff_put(struct snd_kcontrol *kcontrol,
 extern int arizona_lhpf_coeff_put(struct snd_kcontrol *kcontrol,
 				  struct snd_ctl_elem_value *ucontrol);
 
+extern int arizona_clk_ev(struct snd_soc_dapm_widget *w,
+			  struct snd_kcontrol *kcontrol, int event);
 extern int arizona_set_sysclk(struct snd_soc_codec *codec, int clk_id,
 			      int source, unsigned int freq, int dir);
sound/soc/codecs/cs47l24.c +4 -2
index 257b152..5e8f979 100644
@@ -335,9 +335,11 @@ static const struct snd_kcontrol_new cs47l24_aec_loopback_mux =
 
 static const struct snd_soc_dapm_widget cs47l24_dapm_widgets[] = {
 SND_SOC_DAPM_SUPPLY("SYSCLK", ARIZONA_SYSTEM_CLOCK_1,
-		    ARIZONA_SYSCLK_ENA_SHIFT, 0, NULL, 0),
+		    ARIZONA_SYSCLK_ENA_SHIFT, 0, arizona_clk_ev,
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("ASYNCCLK", ARIZONA_ASYNC_CLOCK_1,
-		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, NULL, 0),
+		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, arizona_clk_ev,
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("OPCLK", ARIZONA_OUTPUT_SYSTEM_CLOCK,
 		    ARIZONA_OPCLK_ENA_SHIFT, 0, NULL, 0),
 SND_SOC_DAPM_SUPPLY("ASYNCOPCLK", ARIZONA_OUTPUT_ASYNC_CLOCK,
sound/soc/codecs/wm5102.c +7 -2
index ed03ed27..a891344 100644
@@ -607,6 +607,9 @@ static int wm5102_sysclk_ev(struct snd_soc_dapm_widget *w,
 		break;
 	case SND_SOC_DAPM_PRE_PMD:
 		break;
+	case SND_SOC_DAPM_PRE_PMU:
+	case SND_SOC_DAPM_POST_PMD:
+		return arizona_clk_ev(w, kcontrol, event);
 	default:
 		return 0;
 	}

@@ -1077,9 +1080,11 @@ static const struct snd_kcontrol_new wm5102_aec_loopback_mux =
 static const struct snd_soc_dapm_widget wm5102_dapm_widgets[] = {
 SND_SOC_DAPM_SUPPLY("SYSCLK", ARIZONA_SYSTEM_CLOCK_1, ARIZONA_SYSCLK_ENA_SHIFT,
 		    0, wm5102_sysclk_ev,
-		    SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+		    SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD |
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("ASYNCCLK", ARIZONA_ASYNC_CLOCK_1,
-		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, NULL, 0),
+		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, arizona_clk_ev,
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("OPCLK", ARIZONA_OUTPUT_SYSTEM_CLOCK,
 		    ARIZONA_OPCLK_ENA_SHIFT, 0, NULL, 0),
 SND_SOC_DAPM_SUPPLY("ASYNCOPCLK", ARIZONA_OUTPUT_ASYNC_CLOCK,
sound/soc/codecs/wm5110.c +7 -3
index 53d35fe..a4331ad 100644
@@ -183,7 +183,9 @@ static int wm5110_sysclk_ev(struct snd_soc_dapm_widget *w,
 				regmap_write_async(regmap, patch[i].reg,
 						   patch[i].def);
 		break;
-
+	case SND_SOC_DAPM_PRE_PMU:
+	case SND_SOC_DAPM_POST_PMD:
+		return arizona_clk_ev(w, kcontrol, event);
 	default:
 		break;
 	}

@@ -1073,9 +1075,11 @@ static const struct snd_kcontrol_new wm5110_output_anc_src[] = {
 
 static const struct snd_soc_dapm_widget wm5110_dapm_widgets[] = {
 SND_SOC_DAPM_SUPPLY("SYSCLK", ARIZONA_SYSTEM_CLOCK_1, ARIZONA_SYSCLK_ENA_SHIFT,
-		    0, wm5110_sysclk_ev, SND_SOC_DAPM_POST_PMU),
+		    0, wm5110_sysclk_ev, SND_SOC_DAPM_POST_PMU |
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("ASYNCCLK", ARIZONA_ASYNC_CLOCK_1,
-		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, NULL, 0),
+		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, arizona_clk_ev,
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("OPCLK", ARIZONA_OUTPUT_SYSTEM_CLOCK,
 		    ARIZONA_OPCLK_ENA_SHIFT, 0, NULL, 0),
 SND_SOC_DAPM_SUPPLY("ASYNCOPCLK", ARIZONA_OUTPUT_ASYNC_CLOCK,
sound/soc/codecs/wm8997.c +7 -2
index 2f2821b..f5f5d43 100644
@@ -108,6 +108,9 @@ static int wm8997_sysclk_ev(struct snd_soc_dapm_widget *w,
 		break;
 	case SND_SOC_DAPM_PRE_PMD:
 		break;
+	case SND_SOC_DAPM_PRE_PMU:
+	case SND_SOC_DAPM_POST_PMD:
+		return arizona_clk_ev(w, kcontrol, event);
 	default:
 		return 0;
 	}

@@ -408,9 +411,11 @@ static const struct snd_kcontrol_new wm8997_aec_loopback_mux =
 static const struct snd_soc_dapm_widget wm8997_dapm_widgets[] = {
 SND_SOC_DAPM_SUPPLY("SYSCLK", ARIZONA_SYSTEM_CLOCK_1, ARIZONA_SYSCLK_ENA_SHIFT,
 		    0, wm8997_sysclk_ev,
-		    SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+		    SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD |
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("ASYNCCLK", ARIZONA_ASYNC_CLOCK_1,
-		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, NULL, 0),
+		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, arizona_clk_ev,
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("OPCLK", ARIZONA_OUTPUT_SYSTEM_CLOCK,
 		    ARIZONA_OPCLK_ENA_SHIFT, 0, NULL, 0),
 SND_SOC_DAPM_SUPPLY("ASYNCOPCLK", ARIZONA_OUTPUT_ASYNC_CLOCK,
sound/soc/codecs/wm8998.c +4 -2
index bcc2e10..3eaa361 100644
@@ -541,9 +541,11 @@ static const struct snd_kcontrol_new wm8998_aec_loopback_mux[] = {
 
 static const struct snd_soc_dapm_widget wm8998_dapm_widgets[] = {
 SND_SOC_DAPM_SUPPLY("SYSCLK", ARIZONA_SYSTEM_CLOCK_1,
-		    ARIZONA_SYSCLK_ENA_SHIFT, 0, NULL, 0),
+		    ARIZONA_SYSCLK_ENA_SHIFT, 0, arizona_clk_ev,
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("ASYNCCLK", ARIZONA_ASYNC_CLOCK_1,
-		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, NULL, 0),
+		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, arizona_clk_ev,
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("OPCLK", ARIZONA_OUTPUT_SYSTEM_CLOCK,
 		    ARIZONA_OPCLK_ENA_SHIFT, 0, NULL, 0),
 SND_SOC_DAPM_SUPPLY("ASYNCOPCLK", ARIZONA_OUTPUT_ASYNC_CLOCK,
Signature · 1 line
2.1.4
Tested-by on v1 5/6
#15 lore raw

Re: [PATCH 5/6] ASoC: arizona: Add gating for clock when used for direct MCLK

Quoted 6 lines · Charles Keepax

Whilst ultimately we would like to move all the clocking over to the clock framework, as an intermediate step to get people going for now gating the source clocks for SYSCLK/ASYNCCLK when they are configured to come directly from an MCLK pin.

Signed-off-by Charles Keepax <[email protected]>

I've tested this patch on TM2 board with WM5110 codec and I didn't notice any issues. The clock management looked good with this patch.

Tested-by Sylwester Nawrocki <[email protected]>
maintainer
#16 lore raw

Applied "ASoC: arizona: Add gating for clock when used for direct MCLK" to the asoc tree

In reply to Charles Keepax

The patch

ASoC: arizona: Add gating for clock when used for direct MCLK

has been applied to the asoc tree at

git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks,
Mark

Quoted 1 line

From 7a4413d0dc964eecbed8dcb0e0d0b6e0aa9051f1 Mon Sep 17 00:00:00 2001

From: Charles Keepax <[email protected]>
Date: Fri, 21 Oct 2016 14:15:57 +0100
Subject: [PATCH] ASoC: arizona: Add gating for clock when used for direct MCLK

Whilst ultimately we would like to move all the clocking over to the clock framework, as an intermediate step to get people going for now gating the source clocks for SYSCLK/ASYNCCLK when they are configured to come directly from an MCLK pin.

Signed-off-by Charles Keepax <[email protected]>
Tested-by Sylwester Nawrocki <[email protected]>
Signed-off-by Mark Brown <[email protected]>
---
 sound/soc/codecs/arizona.c | 40 ++++++++++++++++++++++++++++++++++++++++
 sound/soc/codecs/arizona.h |  2 ++
 sound/soc/codecs/cs47l24.c |  6 ++++--
 sound/soc/codecs/wm5102.c  |  9 +++++++--
 sound/soc/codecs/wm5110.c  | 10 +++++++---
 sound/soc/codecs/wm8997.c  |  9 +++++++--
 sound/soc/codecs/wm8998.c  |  6 ++++--
 7 files changed, 71 insertions(+), 11 deletions(-)
sound/soc/codecs/arizona.c +40 -0
index 846ca079845f..10be50ae2f76 100644
@@ -1233,6 +1233,46 @@ static int arizona_set_opclk(struct snd_soc_codec *codec, unsigned int clk,
 	return -EINVAL;
 }
 
+int arizona_clk_ev(struct snd_soc_dapm_widget *w,
+		   struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
+	struct arizona *arizona = dev_get_drvdata(codec->dev->parent);
+	unsigned int val;
+	int clk_idx;
+	int ret;
+
+	ret = regmap_read(arizona->regmap, w->reg, &val);
+	if (ret) {
+		dev_err(codec->dev, "Failed to check clock source: %d\n", ret);
+		return ret;
+	}
+
+	val = (val & ARIZONA_SYSCLK_SRC_MASK) >> ARIZONA_SYSCLK_SRC_SHIFT;
+
+	switch (val) {
+	case ARIZONA_CLK_SRC_MCLK1:
+		clk_idx = ARIZONA_MCLK1;
+		break;
+	case ARIZONA_CLK_SRC_MCLK2:
+		clk_idx = ARIZONA_MCLK2;
+		break;
+	default:
+		return 0;
+	}
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		return clk_prepare_enable(arizona->mclk[clk_idx]);
+	case SND_SOC_DAPM_POST_PMD:
+		clk_disable_unprepare(arizona->mclk[clk_idx]);
+		return 0;
+	default:
+		return 0;
+	}
+}
+EXPORT_SYMBOL_GPL(arizona_clk_ev);
+
 int arizona_set_sysclk(struct snd_soc_codec *codec, int clk_id,
 		       int source, unsigned int freq, int dir)
 {
sound/soc/codecs/arizona.h +2 -0
index 850aa338ba29..9d0997bec870 100644
@@ -273,6 +273,8 @@ extern int arizona_eq_coeff_put(struct snd_kcontrol *kcontrol,
 extern int arizona_lhpf_coeff_put(struct snd_kcontrol *kcontrol,
 				  struct snd_ctl_elem_value *ucontrol);
 
+extern int arizona_clk_ev(struct snd_soc_dapm_widget *w,
+			  struct snd_kcontrol *kcontrol, int event);
 extern int arizona_set_sysclk(struct snd_soc_codec *codec, int clk_id,
 			      int source, unsigned int freq, int dir);
sound/soc/codecs/cs47l24.c +4 -2
index 5b22564f037c..7df6a6769038 100644
@@ -335,9 +335,11 @@ static const struct snd_kcontrol_new cs47l24_aec_loopback_mux =
 
 static const struct snd_soc_dapm_widget cs47l24_dapm_widgets[] = {
 SND_SOC_DAPM_SUPPLY("SYSCLK", ARIZONA_SYSTEM_CLOCK_1,
-		    ARIZONA_SYSCLK_ENA_SHIFT, 0, NULL, 0),
+		    ARIZONA_SYSCLK_ENA_SHIFT, 0, arizona_clk_ev,
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("ASYNCCLK", ARIZONA_ASYNC_CLOCK_1,
-		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, NULL, 0),
+		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, arizona_clk_ev,
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("OPCLK", ARIZONA_OUTPUT_SYSTEM_CLOCK,
 		    ARIZONA_OPCLK_ENA_SHIFT, 0, NULL, 0),
 SND_SOC_DAPM_SUPPLY("ASYNCOPCLK", ARIZONA_OUTPUT_ASYNC_CLOCK,
sound/soc/codecs/wm5102.c +7 -2
index 93876c6d48ee..bb3de5b3d816 100644
@@ -607,6 +607,9 @@ static int wm5102_sysclk_ev(struct snd_soc_dapm_widget *w,
 		break;
 	case SND_SOC_DAPM_PRE_PMD:
 		break;
+	case SND_SOC_DAPM_PRE_PMU:
+	case SND_SOC_DAPM_POST_PMD:
+		return arizona_clk_ev(w, kcontrol, event);
 	default:
 		return 0;
 	}

@@ -1077,9 +1080,11 @@ static const struct snd_kcontrol_new wm5102_aec_loopback_mux =
 static const struct snd_soc_dapm_widget wm5102_dapm_widgets[] = {
 SND_SOC_DAPM_SUPPLY("SYSCLK", ARIZONA_SYSTEM_CLOCK_1, ARIZONA_SYSCLK_ENA_SHIFT,
 		    0, wm5102_sysclk_ev,
-		    SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+		    SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD |
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("ASYNCCLK", ARIZONA_ASYNC_CLOCK_1,
-		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, NULL, 0),
+		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, arizona_clk_ev,
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("OPCLK", ARIZONA_OUTPUT_SYSTEM_CLOCK,
 		    ARIZONA_OPCLK_ENA_SHIFT, 0, NULL, 0),
 SND_SOC_DAPM_SUPPLY("ASYNCOPCLK", ARIZONA_OUTPUT_ASYNC_CLOCK,
sound/soc/codecs/wm5110.c +7 -3
index 06bae3b23fce..407dc4a43b07 100644
@@ -183,7 +183,9 @@ static int wm5110_sysclk_ev(struct snd_soc_dapm_widget *w,
 				regmap_write_async(regmap, patch[i].reg,
 						   patch[i].def);
 		break;
-
+	case SND_SOC_DAPM_PRE_PMU:
+	case SND_SOC_DAPM_POST_PMD:
+		return arizona_clk_ev(w, kcontrol, event);
 	default:
 		break;
 	}

@@ -1073,9 +1075,11 @@ static const struct snd_kcontrol_new wm5110_output_anc_src[] = {
 
 static const struct snd_soc_dapm_widget wm5110_dapm_widgets[] = {
 SND_SOC_DAPM_SUPPLY("SYSCLK", ARIZONA_SYSTEM_CLOCK_1, ARIZONA_SYSCLK_ENA_SHIFT,
-		    0, wm5110_sysclk_ev, SND_SOC_DAPM_POST_PMU),
+		    0, wm5110_sysclk_ev, SND_SOC_DAPM_POST_PMU |
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("ASYNCCLK", ARIZONA_ASYNC_CLOCK_1,
-		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, NULL, 0),
+		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, arizona_clk_ev,
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("OPCLK", ARIZONA_OUTPUT_SYSTEM_CLOCK,
 		    ARIZONA_OPCLK_ENA_SHIFT, 0, NULL, 0),
 SND_SOC_DAPM_SUPPLY("ASYNCOPCLK", ARIZONA_OUTPUT_ASYNC_CLOCK,
sound/soc/codecs/wm8997.c +7 -2
index 2f2821b3382f..f5f5d4352670 100644
@@ -108,6 +108,9 @@ static int wm8997_sysclk_ev(struct snd_soc_dapm_widget *w,
 		break;
 	case SND_SOC_DAPM_PRE_PMD:
 		break;
+	case SND_SOC_DAPM_PRE_PMU:
+	case SND_SOC_DAPM_POST_PMD:
+		return arizona_clk_ev(w, kcontrol, event);
 	default:
 		return 0;
 	}

@@ -408,9 +411,11 @@ static const struct snd_kcontrol_new wm8997_aec_loopback_mux =
 static const struct snd_soc_dapm_widget wm8997_dapm_widgets[] = {
 SND_SOC_DAPM_SUPPLY("SYSCLK", ARIZONA_SYSTEM_CLOCK_1, ARIZONA_SYSCLK_ENA_SHIFT,
 		    0, wm8997_sysclk_ev,
-		    SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+		    SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD |
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("ASYNCCLK", ARIZONA_ASYNC_CLOCK_1,
-		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, NULL, 0),
+		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, arizona_clk_ev,
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("OPCLK", ARIZONA_OUTPUT_SYSTEM_CLOCK,
 		    ARIZONA_OPCLK_ENA_SHIFT, 0, NULL, 0),
 SND_SOC_DAPM_SUPPLY("ASYNCOPCLK", ARIZONA_OUTPUT_ASYNC_CLOCK,
sound/soc/codecs/wm8998.c +4 -2
index bcc2e1060a6c..3eaa3615b82e 100644
@@ -541,9 +541,11 @@ static const struct snd_kcontrol_new wm8998_aec_loopback_mux[] = {
 
 static const struct snd_soc_dapm_widget wm8998_dapm_widgets[] = {
 SND_SOC_DAPM_SUPPLY("SYSCLK", ARIZONA_SYSTEM_CLOCK_1,
-		    ARIZONA_SYSCLK_ENA_SHIFT, 0, NULL, 0),
+		    ARIZONA_SYSCLK_ENA_SHIFT, 0, arizona_clk_ev,
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("ASYNCCLK", ARIZONA_ASYNC_CLOCK_1,
-		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, NULL, 0),
+		    ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, arizona_clk_ev,
+		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("OPCLK", ARIZONA_OUTPUT_SYSTEM_CLOCK,
 		    ARIZONA_OPCLK_ENA_SHIFT, 0, NULL, 0),
 SND_SOC_DAPM_SUPPLY("ASYNCOPCLK", ARIZONA_OUTPUT_ASYNC_CLOCK,
Signature · 1 line
2.8.1
author
#17 lore raw

PATCH 6/6 ASoC: arizona: Add gating for source clocks of the FLLs

In reply to Charles Keepax

Whilst ultimately we would like to move all the clocking over to the clock framework, as an intermediate step to get people going for now enable the source clocks for FLLs as they are powered up.

Signed-off-by Charles Keepax <[email protected]>
---
 sound/soc/codecs/arizona.c | 60 +++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 54 insertions(+), 6 deletions(-)
sound/soc/codecs/arizona.c +54 -6
index 2a019e9..780cf4f 100644
@@ -2244,6 +2244,42 @@ static int arizona_is_enabled_fll(struct arizona_fll *fll, int base)
 	return reg & ARIZONA_FLL1_ENA;
 }
 
+static int arizona_set_fll_clks(struct arizona_fll *fll, int base, bool ena)
+{
+	struct arizona *arizona = fll->arizona;
+	unsigned int val;
+	struct clk *clk;
+	int ret;
+
+	ret = regmap_read(arizona->regmap, base + 6, &val);
+	if (ret != 0) {
+		arizona_fll_err(fll, "Failed to read current source: %d\n",
+				ret);
+		return ret;
+	}
+
+	val &= ARIZONA_FLL1_CLK_REF_SRC_MASK;
+	val >>= ARIZONA_FLL1_CLK_REF_SRC_SHIFT;
+
+	switch (val) {
+	case ARIZONA_FLL_SRC_MCLK1:
+		clk = arizona->mclk[ARIZONA_MCLK1];
+		break;
+	case ARIZONA_FLL_SRC_MCLK2:
+		clk = arizona->mclk[ARIZONA_MCLK2];
+		break;
+	default:
+		return 0;
+	}
+
+	if (ena) {
+		return clk_prepare_enable(clk);
+	} else {
+		clk_disable_unprepare(clk);
+		return 0;
+	}
+}
+
 static int arizona_enable_fll(struct arizona_fll *fll)
 {
 	struct arizona *arizona = fll->arizona;

@@ -2266,6 +2302,10 @@ static int arizona_enable_fll(struct arizona_fll *fll)
 		udelay(32);
 		regmap_update_bits_async(fll->arizona->regmap, fll->base + 0x9,
 					 ARIZONA_FLL1_GAIN_MASK, 0);
+
+		if (arizona_is_enabled_fll(fll, fll->base + 0x10) > 0)
+			arizona_set_fll_clks(fll, fll->base + 0x10, false);
+		arizona_set_fll_clks(fll, fll->base, false);
 	}
 
 	/*

@@ -2320,10 +2360,13 @@ static int arizona_enable_fll(struct arizona_fll *fll)
 	if (!already_enabled)
 		pm_runtime_get_sync(arizona->dev);
 
-	if (use_sync)
+	if (use_sync) {
+		arizona_set_fll_clks(fll, fll->base + 0x10, true);
 		regmap_update_bits_async(arizona->regmap, fll->base + 0x11,
 					 ARIZONA_FLL1_SYNC_ENA,
 					 ARIZONA_FLL1_SYNC_ENA);
+	}
+	arizona_set_fll_clks(fll, fll->base, true);
 	regmap_update_bits_async(arizona->regmap, fll->base + 1,
 				 ARIZONA_FLL1_ENA, ARIZONA_FLL1_ENA);
 

@@ -2356,19 +2399,24 @@ static int arizona_enable_fll(struct arizona_fll *fll)
 static void arizona_disable_fll(struct arizona_fll *fll)
 {
 	struct arizona *arizona = fll->arizona;
-	bool change;
+	bool ref_change, sync_change;
 
 	regmap_update_bits_async(arizona->regmap, fll->base + 1,
 				 ARIZONA_FLL1_FREERUN, ARIZONA_FLL1_FREERUN);
 	regmap_update_bits_check(arizona->regmap, fll->base + 1,
-				 ARIZONA_FLL1_ENA, 0, &change);
-	regmap_update_bits(arizona->regmap, fll->base + 0x11,
-			   ARIZONA_FLL1_SYNC_ENA, 0);
+				 ARIZONA_FLL1_ENA, 0, &ref_change);
+	regmap_update_bits_check(arizona->regmap, fll->base + 0x11,
+				 ARIZONA_FLL1_SYNC_ENA, 0, &sync_change);
 	regmap_update_bits_async(arizona->regmap, fll->base + 1,
 				 ARIZONA_FLL1_FREERUN, 0);
 
-	if (change)
+	if (sync_change)
+		arizona_set_fll_clks(fll, fll->base + 0x10, false);
+
+	if (ref_change) {
+		arizona_set_fll_clks(fll, fll->base, false);
 		pm_runtime_put_autosuspend(arizona->dev);
+	}
 }
 
 int arizona_set_fll_refclk(struct arizona_fll *fll, int source,
Signature · 1 line
2.1.4
maintainer
#19 lore raw

Applied "ASoC: arizona: Add gating for source clocks of the FLLs" to the asoc tree

In reply to Charles Keepax

The patch

ASoC: arizona: Add gating for source clocks of the FLLs

has been applied to the asoc tree at

git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks,
Mark

Quoted 1 line

From ae1ea48c5c5998c5730cebaa2374ab02ad4d7d4f Mon Sep 17 00:00:00 2001

From: Charles Keepax <[email protected]>
Date: Fri, 21 Oct 2016 14:15:58 +0100
Subject: [PATCH] ASoC: arizona: Add gating for source clocks of the FLLs

Whilst ultimately we would like to move all the clocking over to the clock framework, as an intermediate step to get people going for now enable the source clocks for FLLs as they are powered up.

Signed-off-by Charles Keepax <[email protected]>
Tested-by Sylwester Nawrocki <[email protected]>
Signed-off-by Mark Brown <[email protected]>
---
 sound/soc/codecs/arizona.c | 60 +++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 54 insertions(+), 6 deletions(-)
sound/soc/codecs/arizona.c +54 -6
index 10be50ae2f76..7f7d4b31a7fd 100644
@@ -2282,6 +2282,42 @@ static int arizona_is_enabled_fll(struct arizona_fll *fll, int base)
 	return reg & ARIZONA_FLL1_ENA;
 }
 
+static int arizona_set_fll_clks(struct arizona_fll *fll, int base, bool ena)
+{
+	struct arizona *arizona = fll->arizona;
+	unsigned int val;
+	struct clk *clk;
+	int ret;
+
+	ret = regmap_read(arizona->regmap, base + 6, &val);
+	if (ret != 0) {
+		arizona_fll_err(fll, "Failed to read current source: %d\n",
+				ret);
+		return ret;
+	}
+
+	val &= ARIZONA_FLL1_CLK_REF_SRC_MASK;
+	val >>= ARIZONA_FLL1_CLK_REF_SRC_SHIFT;
+
+	switch (val) {
+	case ARIZONA_FLL_SRC_MCLK1:
+		clk = arizona->mclk[ARIZONA_MCLK1];
+		break;
+	case ARIZONA_FLL_SRC_MCLK2:
+		clk = arizona->mclk[ARIZONA_MCLK2];
+		break;
+	default:
+		return 0;
+	}
+
+	if (ena) {
+		return clk_prepare_enable(clk);
+	} else {
+		clk_disable_unprepare(clk);
+		return 0;
+	}
+}
+
 static int arizona_enable_fll(struct arizona_fll *fll)
 {
 	struct arizona *arizona = fll->arizona;

@@ -2304,6 +2340,10 @@ static int arizona_enable_fll(struct arizona_fll *fll)
 		udelay(32);
 		regmap_update_bits_async(fll->arizona->regmap, fll->base + 0x9,
 					 ARIZONA_FLL1_GAIN_MASK, 0);
+
+		if (arizona_is_enabled_fll(fll, fll->base + 0x10) > 0)
+			arizona_set_fll_clks(fll, fll->base + 0x10, false);
+		arizona_set_fll_clks(fll, fll->base, false);
 	}
 
 	/*

@@ -2358,10 +2398,13 @@ static int arizona_enable_fll(struct arizona_fll *fll)
 	if (!already_enabled)
 		pm_runtime_get_sync(arizona->dev);
 
-	if (use_sync)
+	if (use_sync) {
+		arizona_set_fll_clks(fll, fll->base + 0x10, true);
 		regmap_update_bits_async(arizona->regmap, fll->base + 0x11,
 					 ARIZONA_FLL1_SYNC_ENA,
 					 ARIZONA_FLL1_SYNC_ENA);
+	}
+	arizona_set_fll_clks(fll, fll->base, true);
 	regmap_update_bits_async(arizona->regmap, fll->base + 1,
 				 ARIZONA_FLL1_ENA, ARIZONA_FLL1_ENA);
 

@@ -2394,19 +2437,24 @@ static int arizona_enable_fll(struct arizona_fll *fll)
 static void arizona_disable_fll(struct arizona_fll *fll)
 {
 	struct arizona *arizona = fll->arizona;
-	bool change;
+	bool ref_change, sync_change;
 
 	regmap_update_bits_async(arizona->regmap, fll->base + 1,
 				 ARIZONA_FLL1_FREERUN, ARIZONA_FLL1_FREERUN);
 	regmap_update_bits_check(arizona->regmap, fll->base + 1,
-				 ARIZONA_FLL1_ENA, 0, &change);
-	regmap_update_bits(arizona->regmap, fll->base + 0x11,
-			   ARIZONA_FLL1_SYNC_ENA, 0);
+				 ARIZONA_FLL1_ENA, 0, &ref_change);
+	regmap_update_bits_check(arizona->regmap, fll->base + 0x11,
+				 ARIZONA_FLL1_SYNC_ENA, 0, &sync_change);
 	regmap_update_bits_async(arizona->regmap, fll->base + 1,
 				 ARIZONA_FLL1_FREERUN, 0);
 
-	if (change)
+	if (sync_change)
+		arizona_set_fll_clks(fll, fll->base + 0x10, false);
+
+	if (ref_change) {
+		arizona_set_fll_clks(fll, fll->base, false);
 		pm_runtime_put_autosuspend(arizona->dev);
+	}
 }
 
 int arizona_set_fll_refclk(struct arizona_fll *fll, int source,
Signature · 1 line
2.8.1