Moving this control from being a side-effect of the LDO1 regulator driver to a specific exported function.
Signed-off-by: Richard Fitzgerald rf@opensource.wolfsonmicro.com --- drivers/mfd/arizona-core.c | 84 ++++++++++++++++++++++++++++++++++++++ include/linux/mfd/arizona/core.h | 12 +++++ 2 files changed, 96 insertions(+), 0 deletions(-)
diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c index 58e1fe5..a1b4fe6 100644 --- a/drivers/mfd/arizona-core.c +++ b/drivers/mfd/arizona-core.c @@ -94,6 +94,89 @@ int arizona_clk32k_disable(struct arizona *arizona) } EXPORT_SYMBOL_GPL(arizona_clk32k_disable);
+int arizona_dvfs_up(struct arizona *arizona, unsigned int mask) +{ + unsigned int new_flags; + int ret = 0; + + mutex_lock(&arizona->subsys_max_lock); + + new_flags = arizona->subsys_max_rq | mask; + + if (arizona->subsys_max_rq != new_flags) { + switch (arizona->type) { + case WM5102: + case WM8997: + ret = regulator_set_voltage(arizona->dcvdd, + 1800000, 1800000); + if (ret != 0) { + dev_err(arizona->dev, + "Failed to raise dcvdd (%u)\n", ret); + goto err; + } + + ret = regmap_update_bits(arizona->regmap, + ARIZONA_DYNAMIC_FREQUENCY_SCALING_1, + ARIZONA_SUBSYS_MAX_FREQ, 1); + if (ret != 0) { + dev_err(arizona->dev, + "Failed to enable subsys max (%u)\n", + ret); + regulator_set_voltage(arizona->dcvdd, + 1200000, 1800000); + goto err; + } + break; + + default: + break; + } + + arizona->subsys_max_rq = new_flags; + } +err: + mutex_unlock(&arizona->subsys_max_lock); + return ret; +} +EXPORT_SYMBOL_GPL(arizona_dvfs_up); + +int arizona_dvfs_down(struct arizona *arizona, unsigned int mask) +{ + int ret = 0; + + mutex_lock(&arizona->subsys_max_lock); + + arizona->subsys_max_rq &= ~mask; + + if (arizona->subsys_max_rq == 0) { + switch (arizona->type) { + case WM5102: + case WM8997: + ret = regmap_update_bits(arizona->regmap, + ARIZONA_DYNAMIC_FREQUENCY_SCALING_1, + ARIZONA_SUBSYS_MAX_FREQ, 0); + if (ret != 0) + dev_err(arizona->dev, + "Failed to disable subsys max (%u)\n", + ret); + + ret = regulator_set_voltage(arizona->dcvdd, + 1200000, 1800000); + if (ret != 0) + dev_err(arizona->dev, + "Failed to lower dcvdd (%u)\n", ret); + break; + + default: + break; + } + } + + mutex_unlock(&arizona->subsys_max_lock); + return ret; +} +EXPORT_SYMBOL_GPL(arizona_dvfs_down); + static irqreturn_t arizona_clkgen_err(int irq, void *data) { struct arizona *arizona = data; @@ -645,6 +728,7 @@ int arizona_dev_init(struct arizona *arizona)
dev_set_drvdata(arizona->dev, arizona); mutex_init(&arizona->clk_lock); + mutex_init(&arizona->subsys_max_lock);
if (dev_get_platdata(arizona->dev)) memcpy(&arizona->pdata, dev_get_platdata(arizona->dev), diff --git a/include/linux/mfd/arizona/core.h b/include/linux/mfd/arizona/core.h index 76564af..b4b8a7e 100644 --- a/include/linux/mfd/arizona/core.h +++ b/include/linux/mfd/arizona/core.h @@ -132,11 +132,23 @@ struct arizona { struct mutex clk_lock; int clk32k_ref;
+ struct mutex subsys_max_lock; + unsigned int subsys_max_rq; + struct snd_soc_dapm_context *dapm; };
+#define ARIZONA_DVFS_SR1_RQ 0x00000001 +#define ARIZONA_DVFS_SR2_RQ 0x00000002 +#define ARIZONA_DVFS_SR3_RQ 0x00000004 +#define ARIZONA_DVFS_ASR1_RQ 0x00000010 +#define ARIZONA_DVFS_ASR2_RQ 0x00000020 +#define ARIZONA_DVFS_ADSP1_RQ 0x00010000 + int arizona_clk32k_enable(struct arizona *arizona); int arizona_clk32k_disable(struct arizona *arizona); +int arizona_dvfs_up(struct arizona *arizona, unsigned int mask); +int arizona_dvfs_down(struct arizona *arizona, unsigned int mask);
int arizona_request_irq(struct arizona *arizona, int irq, char *name, irq_handler_t handler, void *data);