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Subject[PATCH v3 14/16] ALSA: hda: cs35l41: Move external boost handling to lib for ASoC use
Date
To add support for external boost for ASoC move the HDA external
boost implementation to the shared lib.

Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
---
include/sound/cs35l41.h | 4 +
sound/pci/hda/cs35l41_hda.c | 119 ++----------------------------
sound/soc/codecs/cs35l41-lib.c | 129 ++++++++++++++++++++++++++++++++-
3 files changed, 137 insertions(+), 115 deletions(-)

diff --git a/include/sound/cs35l41.h b/include/sound/cs35l41.h
index a8537bccedcf..2b2d1d17e552 100644
--- a/include/sound/cs35l41.h
+++ b/include/sound/cs35l41.h
@@ -799,5 +799,9 @@ int cs35l41_set_channels(struct device *dev, struct regmap *reg,
int cs35l41_boost_config(struct device *dev, struct regmap *regmap, int boost_ind, int boost_cap,
int boost_ipk);
int cs35l41_gpio_config(struct regmap *regmap, struct cs35l41_hw_cfg *hw_cfg);
+int cs35l41_init_boost(struct device *dev, struct regmap *regmap,
+ struct cs35l41_hw_cfg *hw_cfg);
+bool cs35l41_safe_reset(struct regmap *regmap, enum cs35l41_boost_type b_type);
+int cs35l41_global_enable(struct regmap *regmap, enum cs35l41_boost_type b_type, int enable);

#endif /* __CS35L41_H */
diff --git a/sound/pci/hda/cs35l41_hda.c b/sound/pci/hda/cs35l41_hda.c
index 2ae074c8613e..190002cdd429 100644
--- a/sound/pci/hda/cs35l41_hda.c
+++ b/sound/pci/hda/cs35l41_hda.c
@@ -32,94 +32,6 @@ static const struct reg_sequence cs35l41_hda_mute[] = {
{ CS35L41_AMP_DIG_VOL_CTRL, 0x0000A678 }, // AMP_VOL_PCM Mute
};

-static const struct reg_sequence cs35l41_safe_to_reset[] = {
- { 0x00000040, 0x00000055 },
- { 0x00000040, 0x000000AA },
- { 0x0000393C, 0x000000C0, 6000},
- { 0x0000393C, 0x00000000 },
- { 0x00007414, 0x00C82222 },
- { 0x0000742C, 0x00000000 },
- { 0x00000040, 0x000000CC },
- { 0x00000040, 0x00000033 },
-};
-
-static const struct reg_sequence cs35l41_safe_to_active[] = {
- { 0x00000040, 0x00000055 },
- { 0x00000040, 0x000000AA },
- { 0x0000742C, 0x0000000F },
- { 0x0000742C, 0x00000079 },
- { 0x00007438, 0x00585941 },
- { CS35L41_PWR_CTRL1, 0x00000001, 3000 }, // GLOBAL_EN = 1
- { 0x0000742C, 0x000000F9 },
- { 0x00007438, 0x00580941 },
- { 0x00000040, 0x000000CC },
- { 0x00000040, 0x00000033 },
-};
-
-static const struct reg_sequence cs35l41_active_to_safe[] = {
- { 0x00000040, 0x00000055 },
- { 0x00000040, 0x000000AA },
- { 0x00007438, 0x00585941 },
- { CS35L41_PWR_CTRL1, 0x00000000 },
- { 0x0000742C, 0x00000009, 3000 },
- { 0x00007438, 0x00580941 },
- { 0x00000040, 0x000000CC },
- { 0x00000040, 0x00000033 },
-};
-
-static const struct reg_sequence cs35l41_reset_to_safe[] = {
- { 0x00000040, 0x00000055 },
- { 0x00000040, 0x000000AA },
- { 0x00007438, 0x00585941 },
- { 0x00007414, 0x08C82222 },
- { 0x0000742C, 0x00000009 },
- { 0x00000040, 0x000000CC },
- { 0x00000040, 0x00000033 },
-};
-
-static bool cs35l41_hda_safe_reset(struct cs35l41_hda *cs35l41)
-{
- switch (cs35l41->hw_cfg.bst_type) {
- case CS35L41_EXT_BOOST:
- regmap_write(cs35l41->regmap, CS35L41_GPIO1_CTRL1, 0x00000001);
- regmap_multi_reg_write(cs35l41->regmap, cs35l41_safe_to_reset,
- ARRAY_SIZE(cs35l41_safe_to_reset));
- return true;
- case CS35L41_EXT_BOOST_NO_VSPK_SWITCH:
- return false;
- default:
- return true;
- }
-};
-
-static int cs35l41_hda_global_enable(struct cs35l41_hda *cs35l41, int enable)
-{
- int ret;
-
- switch (cs35l41->hw_cfg.bst_type) {
- case CS35L41_INT_BOOST:
- ret = regmap_update_bits(cs35l41->regmap, CS35L41_PWR_CTRL1,
- CS35L41_GLOBAL_EN_MASK,
- enable << CS35L41_GLOBAL_EN_SHIFT);
- usleep_range(3000, 3100);
- break;
- case CS35L41_EXT_BOOST:
- case CS35L41_EXT_BOOST_NO_VSPK_SWITCH:
- if (enable)
- ret = regmap_multi_reg_write(cs35l41->regmap, cs35l41_safe_to_active,
- ARRAY_SIZE(cs35l41_safe_to_active));
- else
- ret = regmap_multi_reg_write(cs35l41->regmap, cs35l41_active_to_safe,
- ARRAY_SIZE(cs35l41_active_to_safe));
- break;
- default:
- ret = -EINVAL;
- break;
- }
-
- return ret;
-};
-
static void cs35l41_hda_playback_hook(struct device *dev, int action)
{
struct cs35l41_hda *cs35l41 = dev_get_drvdata(dev);
@@ -135,11 +47,11 @@ static void cs35l41_hda_playback_hook(struct device *dev, int action)
regmap_write(reg, CS35L41_GPIO1_CTRL1, 0x00008001);
break;
case HDA_GEN_PCM_ACT_PREPARE:
- ret = cs35l41_hda_global_enable(cs35l41, 1);
+ ret = cs35l41_global_enable(reg, cs35l41->hw_cfg.bst_type, 1);
break;
case HDA_GEN_PCM_ACT_CLEANUP:
regmap_multi_reg_write(reg, cs35l41_hda_mute, ARRAY_SIZE(cs35l41_hda_mute));
- ret = cs35l41_hda_global_enable(cs35l41, 0);
+ ret = cs35l41_global_enable(reg, cs35l41->hw_cfg.bst_type, 0);
break;
case HDA_GEN_PCM_ACT_CLOSE:
ret = regmap_update_bits(reg, CS35L41_PWR_CTRL2,
@@ -207,26 +119,9 @@ static int cs35l41_hda_apply_properties(struct cs35l41_hda *cs35l41)
if (!cs35l41->hw_cfg.valid)
return -EINVAL;

- switch (hw_cfg->bst_type) {
- case CS35L41_INT_BOOST:
- ret = cs35l41_boost_config(cs35l41->dev, cs35l41->regmap,
- hw_cfg->bst_ind, hw_cfg->bst_cap, hw_cfg->bst_ipk);
- if (ret)
- return ret;
- break;
- case CS35L41_EXT_BOOST:
- case CS35L41_EXT_BOOST_NO_VSPK_SWITCH:
- regmap_multi_reg_write(cs35l41->regmap, cs35l41_reset_to_safe,
- ARRAY_SIZE(cs35l41_reset_to_safe));
- ret = regmap_update_bits(cs35l41->regmap, CS35L41_PWR_CTRL2, CS35L41_BST_EN_MASK,
- CS35L41_BST_DIS_FET_OFF << CS35L41_BST_EN_SHIFT);
- if (ret)
- return ret;
- break;
- default:
- dev_err(cs35l41->dev, "Boost type %d not supported\n", hw_cfg->bst_type);
- return -EINVAL;
- }
+ ret = cs35l41_init_boost(cs35l41->dev, cs35l41->regmap, hw_cfg);
+ if (ret)
+ return ret;

if (hw_cfg->gpio1.valid) {
switch (hw_cfg->gpio1.func) {
@@ -505,7 +400,7 @@ int cs35l41_hda_probe(struct device *dev, const char *device_name, int id, int i
return 0;

err:
- if (cs35l41_hda_safe_reset(cs35l41))
+ if (cs35l41_safe_reset(cs35l41->regmap, cs35l41->hw_cfg.bst_type))
gpiod_set_value_cansleep(cs35l41->reset_gpio, 0);
gpiod_put(cs35l41->reset_gpio);

@@ -519,7 +414,7 @@ void cs35l41_hda_remove(struct device *dev)

component_del(cs35l41->dev, &cs35l41_hda_comp_ops);

- if (cs35l41_hda_safe_reset(cs35l41))
+ if (cs35l41_safe_reset(cs35l41->regmap, cs35l41->hw_cfg.bst_type))
gpiod_set_value_cansleep(cs35l41->reset_gpio, 0);
gpiod_put(cs35l41->reset_gpio);
}
diff --git a/sound/soc/codecs/cs35l41-lib.c b/sound/soc/codecs/cs35l41-lib.c
index 34ba163874a6..91270047bf35 100644
--- a/sound/soc/codecs/cs35l41-lib.c
+++ b/sound/soc/codecs/cs35l41-lib.c
@@ -954,9 +954,8 @@ static const unsigned char cs35l41_bst_slope_table[4] = {
0x75, 0x6B, 0x3B, 0x28
};

-
-int cs35l41_boost_config(struct device *dev, struct regmap *regmap, int boost_ind, int boost_cap,
- int boost_ipk)
+int cs35l41_boost_config(struct device *dev, struct regmap *regmap, int boost_ind,
+ int boost_cap, int boost_ipk)
{
unsigned char bst_lbst_val, bst_cbst_range, bst_ipk_scaled;
int ret;
@@ -1043,6 +1042,130 @@ int cs35l41_boost_config(struct device *dev, struct regmap *regmap, int boost_in
}
EXPORT_SYMBOL_GPL(cs35l41_boost_config);

+static const struct reg_sequence cs35l41_safe_to_reset[] = {
+ { 0x00000040, 0x00000055 },
+ { 0x00000040, 0x000000AA },
+ { 0x0000393C, 0x000000C0, 6000},
+ { 0x0000393C, 0x00000000 },
+ { 0x00007414, 0x00C82222 },
+ { 0x0000742C, 0x00000000 },
+ { 0x00000040, 0x000000CC },
+ { 0x00000040, 0x00000033 },
+};
+
+static const struct reg_sequence cs35l41_active_to_safe[] = {
+ { 0x00000040, 0x00000055 },
+ { 0x00000040, 0x000000AA },
+ { 0x00007438, 0x00585941 },
+ { CS35L41_PWR_CTRL1, 0x00000000 },
+ { 0x0000742C, 0x00000009, 3000 },
+ { 0x00007438, 0x00580941 },
+ { 0x00000040, 0x000000CC },
+ { 0x00000040, 0x00000033 },
+};
+
+static const struct reg_sequence cs35l41_safe_to_active[] = {
+ { 0x00000040, 0x00000055 },
+ { 0x00000040, 0x000000AA },
+ { 0x0000742C, 0x0000000F },
+ { 0x0000742C, 0x00000079 },
+ { 0x00007438, 0x00585941 },
+ { CS35L41_PWR_CTRL1, 0x00000001, 3000 }, // GLOBAL_EN = 1
+ { 0x0000742C, 0x000000F9 },
+ { 0x00007438, 0x00580941 },
+ { 0x00000040, 0x000000CC },
+ { 0x00000040, 0x00000033 },
+};
+
+static const struct reg_sequence cs35l41_reset_to_safe[] = {
+ { 0x00000040, 0x00000055 },
+ { 0x00000040, 0x000000AA },
+ { 0x00007438, 0x00585941 },
+ { 0x00007414, 0x08C82222 },
+ { 0x0000742C, 0x00000009 },
+ { 0x00000040, 0x000000CC },
+ { 0x00000040, 0x00000033 },
+};
+
+int cs35l41_init_boost(struct device *dev, struct regmap *regmap,
+ struct cs35l41_hw_cfg *hw_cfg)
+{
+ int ret;
+
+ switch (hw_cfg->bst_type) {
+ case CS35L41_INT_BOOST:
+ ret = cs35l41_boost_config(dev, regmap, hw_cfg->bst_ind,
+ hw_cfg->bst_cap, hw_cfg->bst_ipk);
+ if (ret)
+ dev_err(dev, "Error in Boost DT config: %d\n", ret);
+ break;
+ case CS35L41_EXT_BOOST:
+ case CS35L41_EXT_BOOST_NO_VSPK_SWITCH:
+ /* Only CLSA0100 doesn't use GPIO as VSPK switch, but even on that laptop we can
+ * toggle GPIO1 as is not connected to anything.
+ * There will be no other device without VSPK switch.
+ */
+ regmap_write(regmap, CS35L41_GPIO1_CTRL1, 0x00000001);
+ regmap_multi_reg_write(regmap, cs35l41_reset_to_safe,
+ ARRAY_SIZE(cs35l41_reset_to_safe));
+ ret = regmap_update_bits(regmap, CS35L41_PWR_CTRL2, CS35L41_BST_EN_MASK,
+ CS35L41_BST_DIS_FET_OFF << CS35L41_BST_EN_SHIFT);
+ break;
+ default:
+ dev_err(dev, "Boost type %d not supported\n", hw_cfg->bst_type);
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(cs35l41_init_boost);
+
+bool cs35l41_safe_reset(struct regmap *regmap, enum cs35l41_boost_type b_type)
+{
+ switch (b_type) {
+ /* There is only one laptop that doesn't have VSPK switch. */
+ case CS35L41_EXT_BOOST_NO_VSPK_SWITCH:
+ return false;
+ case CS35L41_EXT_BOOST:
+ regmap_write(regmap, CS35L41_GPIO1_CTRL1, 0x00000001);
+ regmap_multi_reg_write(regmap, cs35l41_safe_to_reset,
+ ARRAY_SIZE(cs35l41_safe_to_reset));
+ return true;
+ default:
+ return true;
+ }
+}
+EXPORT_SYMBOL_GPL(cs35l41_safe_reset);
+
+int cs35l41_global_enable(struct regmap *regmap, enum cs35l41_boost_type b_type, int enable)
+{
+ int ret;
+
+ switch (b_type) {
+ case CS35L41_INT_BOOST:
+ ret = regmap_update_bits(regmap, CS35L41_PWR_CTRL1, CS35L41_GLOBAL_EN_MASK,
+ enable << CS35L41_GLOBAL_EN_SHIFT);
+ usleep_range(3000, 3100);
+ break;
+ case CS35L41_EXT_BOOST:
+ case CS35L41_EXT_BOOST_NO_VSPK_SWITCH:
+ if (enable)
+ ret = regmap_multi_reg_write(regmap, cs35l41_safe_to_active,
+ ARRAY_SIZE(cs35l41_safe_to_active));
+ else
+ ret = regmap_multi_reg_write(regmap, cs35l41_active_to_safe,
+ ARRAY_SIZE(cs35l41_active_to_safe));
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(cs35l41_global_enable);
+
int cs35l41_gpio_config(struct regmap *regmap, struct cs35l41_hw_cfg *hw_cfg)
{
struct cs35l41_gpio_cfg *gpio1 = &hw_cfg->gpio1;
--
2.35.1
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