extcon: arizona: Allow configuration of MICBIAS rise time

Allow configuration of the rise time for MICBIAS via platform data, the
delay required depends on things like the external component selection.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 9e1d104..635b707 100644 (file)
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -417,6 +417,12 @@ static int arizona_extcon_probe(struct platform_device *pdev)
                }
        }
 
+       if (arizona->pdata.micd_bias_start_time)
+               regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
+                                  ARIZONA_MICD_BIAS_STARTTIME_MASK,
+                                  arizona->pdata.micd_bias_start_time
+                                  << ARIZONA_MICD_BIAS_STARTTIME_SHIFT);
+
        arizona_extcon_set_mode(info, 0);
 
        info->input = devm_input_allocate_device(&pdev->dev);

diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h
index 8b1d1da..5b05088 100644 (file)
--- a/include/linux/mfd/arizona/pdata.h
+++ b/include/linux/mfd/arizona/pdata.h
@@ -99,6 +99,9 @@ struct arizona_pdata {
        /** GPIO for mic detection polarity */
        int micd_pol_gpio;
 
+       /** Mic detect ramp rate */
+       int micd_bias_start_time;
+
        /** Headset polarity configurations */
        struct arizona_micd_config *micd_configs;
        int num_micd_configs;