From 112bdfaa525fd5993e17885861342893f15290b0 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Mon, 16 Feb 2015 15:41:02 +0000 Subject: extcon: arizona: Deobfuscate arizona_extcon_do_magic arizona_extcon_do_magic does not lend a lot of clarity to the purpose of the function, and as all the registers used are described in the datasheet there is no need to obfuscate the code. This patch renames the function to arizona_extcon_hp_clamp, as it controls clamping on the headphone output. Signed-off-by: Charles Keepax Acked-by: Lee Jones Signed-off-by: Chanwoo Choi --- drivers/extcon/extcon-arizona.c | 36 ++++++++++++++++++++---------------- 1 file changed, 20 insertions(+), 16 deletions(-) (limited to 'drivers/extcon') diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c index 63f01c42aed4..95cf7f875bb3 100644 --- a/drivers/extcon/extcon-arizona.c +++ b/drivers/extcon/extcon-arizona.c @@ -136,18 +136,22 @@ static const char *arizona_cable[] = { static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info); -static void arizona_extcon_do_magic(struct arizona_extcon_info *info, - unsigned int magic) +static void arizona_extcon_hp_clamp(struct arizona_extcon_info *info, + bool clamp) { struct arizona *arizona = info->arizona; + unsigned int val = 0; int ret; + if (clamp) + val = ARIZONA_RMV_SHRT_HP1L; + mutex_lock(&arizona->dapm->card->dapm_mutex); - arizona->hpdet_magic = magic; + arizona->hpdet_clamp = clamp; - /* Keep the HP output stages disabled while doing the magic */ - if (magic) { + /* Keep the HP output stages disabled while doing the clamp */ + if (clamp) { ret = regmap_update_bits(arizona->regmap, ARIZONA_OUTPUT_ENABLES_1, ARIZONA_OUT1L_ENA | @@ -158,20 +162,20 @@ static void arizona_extcon_do_magic(struct arizona_extcon_info *info, ret); } - ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, - magic); + ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1L, + ARIZONA_RMV_SHRT_HP1L, val); if (ret != 0) - dev_warn(arizona->dev, "Failed to do magic: %d\n", + dev_warn(arizona->dev, "Failed to do clamp: %d\n", ret); - ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, - magic); + ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1R, + ARIZONA_RMV_SHRT_HP1R, val); if (ret != 0) - dev_warn(arizona->dev, "Failed to do magic: %d\n", + dev_warn(arizona->dev, "Failed to do clamp: %d\n", ret); - /* Restore the desired state while not doing the magic */ - if (!magic) { + /* Restore the desired state while not doing the clamp */ + if (!clamp) { ret = regmap_update_bits(arizona->regmap, ARIZONA_OUTPUT_ENABLES_1, ARIZONA_OUT1L_ENA | @@ -603,7 +607,7 @@ done: ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL, 0); - arizona_extcon_do_magic(info, 0); + arizona_extcon_hp_clamp(info, false); if (id_gpio) gpio_set_value_cansleep(id_gpio, 0); @@ -648,7 +652,7 @@ static void arizona_identify_headphone(struct arizona_extcon_info *info) if (info->mic) arizona_stop_mic(info); - arizona_extcon_do_magic(info, 0x4000); + arizona_extcon_hp_clamp(info, true); ret = regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1, @@ -699,7 +703,7 @@ static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info) info->hpdet_active = true; - arizona_extcon_do_magic(info, 0x4000); + arizona_extcon_hp_clamp(info, true); ret = regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1, -- cgit v1.2.3