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authorThomas Niederprüm <niederp@physik.uni-kl.de>2015-01-22 02:01:58 +0300
committerMark Brown <broonie@kernel.org>2015-01-27 20:13:25 +0300
commitf04b1e760a51120f358826d815d12c3f8ecdf1b4 (patch)
tree15ab3cf75b2dd1d2622c0874532890514e418d05 /sound/soc/codecs/sta32x.c
parent1c34c876c4abb219381dcb7096206f1a609f119b (diff)
downloadlinux-f04b1e760a51120f358826d815d12c3f8ecdf1b4.tar.xz
ASoC: sta32x: add device tree binding.
make the sta32x driver usable with device tree configs. Code is heavily based on the sta350 driver. Signed-off-by: Thomas Niederprüm <niederp@physik.uni-kl.de> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/sta32x.c')
-rw-r--r--sound/soc/codecs/sta32x.c108
1 files changed, 106 insertions, 2 deletions
diff --git a/sound/soc/codecs/sta32x.c b/sound/soc/codecs/sta32x.c
index ec2372498c92..669b67f8cee3 100644
--- a/sound/soc/codecs/sta32x.c
+++ b/sound/soc/codecs/sta32x.c
@@ -24,6 +24,8 @@
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/gpio/consumer.h>
@@ -893,15 +895,49 @@ static int sta32x_probe(struct snd_soc_codec *codec)
dev_err(codec->dev, "Failed to startup device\n");
return ret;
}
- /* set thermal warning adjustment and recovery */
+
+ /* CONFA */
if (!pdata->thermal_warning_recovery)
thermal |= STA32X_CONFA_TWAB;
if (!pdata->thermal_warning_adjustment)
thermal |= STA32X_CONFA_TWRB;
+ if (!pdata->fault_detect_recovery)
+ thermal |= STA32X_CONFA_FDRB;
regmap_update_bits(sta32x->regmap, STA32X_CONFA,
- STA32X_CONFA_TWAB | STA32X_CONFA_TWRB,
+ STA32X_CONFA_TWAB | STA32X_CONFA_TWRB |
+ STA32X_CONFA_FDRB,
thermal);
+ /* CONFC */
+ regmap_update_bits(sta32x->regmap, STA32X_CONFC,
+ STA32X_CONFC_CSZ_MASK,
+ pdata->drop_compensation_ns
+ << STA32X_CONFC_CSZ_SHIFT);
+
+ /* CONFE */
+ regmap_update_bits(sta32x->regmap, STA32X_CONFE,
+ STA32X_CONFE_MPCV,
+ pdata->max_power_use_mpcc ?
+ STA32X_CONFE_MPCV : 0);
+ regmap_update_bits(sta32x->regmap, STA32X_CONFE,
+ STA32X_CONFE_MPC,
+ pdata->max_power_correction ?
+ STA32X_CONFE_MPC : 0);
+ regmap_update_bits(sta32x->regmap, STA32X_CONFE,
+ STA32X_CONFE_AME,
+ pdata->am_reduction_mode ?
+ STA32X_CONFE_AME : 0);
+ regmap_update_bits(sta32x->regmap, STA32X_CONFE,
+ STA32X_CONFE_PWMS,
+ pdata->odd_pwm_speed_mode ?
+ STA32X_CONFE_PWMS : 0);
+
+ /* CONFF */
+ regmap_update_bits(sta32x->regmap, STA32X_CONFF,
+ STA32X_CONFF_IDE,
+ pdata->invalid_input_detect_mute ?
+ STA32X_CONFF_IDE : 0);
+
/* select output configuration */
regmap_update_bits(sta32x->regmap, STA32X_CONFF,
STA32X_CONFF_OCFG_MASK,
@@ -977,7 +1013,66 @@ static const struct regmap_config sta32x_regmap = {
.rd_table = &sta32x_read_regs,
.volatile_table = &sta32x_volatile_regs,
};
+
+#ifdef CONFIG_OF
+static const struct of_device_id st32x_dt_ids[] = {
+ { .compatible = "st,sta32x", },
+ { }
};
+MODULE_DEVICE_TABLE(of, st32x_dt_ids);
+
+static int sta32x_probe_dt(struct device *dev, struct sta32x_priv *sta32x)
+{
+ struct device_node *np = dev->of_node;
+ struct sta32x_platform_data *pdata;
+ u16 tmp;
+
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+
+ of_property_read_u8(np, "st,output-conf",
+ &pdata->output_conf);
+ of_property_read_u8(np, "st,ch1-output-mapping",
+ &pdata->ch1_output_mapping);
+ of_property_read_u8(np, "st,ch2-output-mapping",
+ &pdata->ch2_output_mapping);
+ of_property_read_u8(np, "st,ch3-output-mapping",
+ &pdata->ch3_output_mapping);
+
+ if (of_get_property(np, "st,thermal-warning-recovery", NULL))
+ pdata->thermal_warning_recovery = 1;
+ if (of_get_property(np, "st,thermal-warning-adjustment", NULL))
+ pdata->thermal_warning_adjustment = 1;
+ if (of_get_property(np, "st,needs_esd_watchdog", NULL))
+ pdata->needs_esd_watchdog = 1;
+
+ tmp = 140;
+ of_property_read_u16(np, "st,drop-compensation-ns", &tmp);
+ pdata->drop_compensation_ns = clamp_t(u16, tmp, 0, 300) / 20;
+
+ /* CONFE */
+ if (of_get_property(np, "st,max-power-use-mpcc", NULL))
+ pdata->max_power_use_mpcc = 1;
+
+ if (of_get_property(np, "st,max-power-correction", NULL))
+ pdata->max_power_correction = 1;
+
+ if (of_get_property(np, "st,am-reduction-mode", NULL))
+ pdata->am_reduction_mode = 1;
+
+ if (of_get_property(np, "st,odd-pwm-speed-mode", NULL))
+ pdata->odd_pwm_speed_mode = 1;
+
+ /* CONFF */
+ if (of_get_property(np, "st,invalid-input-detect-mute", NULL))
+ pdata->invalid_input_detect_mute = 1;
+
+ sta32x->pdata = pdata;
+
+ return 0;
+}
+#endif
static int sta32x_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
@@ -994,6 +1089,14 @@ static int sta32x_i2c_probe(struct i2c_client *i2c,
mutex_init(&sta32x->coeff_lock);
sta32x->pdata = dev_get_platdata(dev);
+#ifdef CONFIG_OF
+ if (dev->of_node) {
+ ret = sta32x_probe_dt(dev, sta32x);
+ if (ret < 0)
+ return ret;
+ }
+#endif
+
/* GPIOs */
sta32x->gpiod_nreset = devm_gpiod_get(dev, "reset");
if (IS_ERR(sta32x->gpiod_nreset)) {
@@ -1051,6 +1154,7 @@ static struct i2c_driver sta32x_i2c_driver = {
.driver = {
.name = "sta32x",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(st32x_dt_ids),
},
.probe = sta32x_i2c_probe,
.remove = sta32x_i2c_remove,