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Message-ID: <CAHp75VeOK4ZWqTATHU+nXsqSsqGESemSUMYX685kVuPqpf0mig@mail.gmail.com>
Date: Mon, 18 Jan 2021 14:13:10 +0200
From: Andy Shevchenko <andy.shevchenko@...il.com>
To: Hans de Goede <hdegoede@...hat.com>
Cc: Lee Jones <lee.jones@...aro.org>,
Cezary Rojewski <cezary.rojewski@...el.com>,
Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
Jie Yang <yang.jie@...ux.intel.com>,
Mark Brown <broonie@...nel.org>, patches@...nsource.cirrus.com,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Charles Keepax <ckeepax@...nsource.cirrus.com>,
ALSA Development Mailing List <alsa-devel@...a-project.org>
Subject: Re: [PATCH v2 12/12] extcon: arizona: Drop the arizona extcon driver
On Sun, Jan 17, 2021 at 6:06 PM Hans de Goede <hdegoede@...hat.com> wrote:
>
> The codec drivers for arizona codecs now take care of jack-detect
> handling themselves; and drivers/mfd/arizona-core.c no longer
> instantiates a "arizona-extcon" child-device for these.
>
> This means that the "arizona-extcon" driver is no longer needed
> (there are no longer any devices for it to bind to), so it can
> be dropped.
Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.co>
> Signed-off-by: Hans de Goede <hdegoede@...hat.com>
> ---
> MAINTAINERS | 1 -
> drivers/extcon/Kconfig | 8 -
> drivers/extcon/Makefile | 1 -
> drivers/extcon/extcon-arizona.c | 1816 -------------------------------
> 4 files changed, 1826 deletions(-)
> delete mode 100644 drivers/extcon/extcon-arizona.c
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 66b56928cc47..9ded82d53c18 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -19255,7 +19255,6 @@ F: Documentation/devicetree/bindings/sound/wlf,arizona.yaml
> F: Documentation/hwmon/wm83??.rst
> F: arch/arm/mach-s3c/mach-crag6410*
> F: drivers/clk/clk-wm83*.c
> -F: drivers/extcon/extcon-arizona.c
> F: drivers/gpio/gpio-*wm*.c
> F: drivers/gpio/gpio-arizona.c
> F: drivers/hwmon/wm83??-hwmon.c
> diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
> index af58ebca2bf6..e3db936becfd 100644
> --- a/drivers/extcon/Kconfig
> +++ b/drivers/extcon/Kconfig
> @@ -21,14 +21,6 @@ config EXTCON_ADC_JACK
> help
> Say Y here to enable extcon device driver based on ADC values.
>
> -config EXTCON_ARIZONA
> - tristate "Wolfson Arizona EXTCON support"
> - depends on MFD_ARIZONA && INPUT && SND_SOC
> - help
> - Say Y here to enable support for external accessory detection
> - with Wolfson Arizona devices. These are audio CODECs with
> - advanced audio accessory detection support.
> -
> config EXTCON_AXP288
> tristate "X-Power AXP288 EXTCON support"
> depends on MFD_AXP20X && USB_SUPPORT && X86 && ACPI
> diff --git a/drivers/extcon/Makefile b/drivers/extcon/Makefile
> index fe10a1b7d18b..1b390d934ca9 100644
> --- a/drivers/extcon/Makefile
> +++ b/drivers/extcon/Makefile
> @@ -6,7 +6,6 @@
> obj-$(CONFIG_EXTCON) += extcon-core.o
> extcon-core-objs += extcon.o devres.o
> obj-$(CONFIG_EXTCON_ADC_JACK) += extcon-adc-jack.o
> -obj-$(CONFIG_EXTCON_ARIZONA) += extcon-arizona.o
> obj-$(CONFIG_EXTCON_AXP288) += extcon-axp288.o
> obj-$(CONFIG_EXTCON_FSA9480) += extcon-fsa9480.o
> obj-$(CONFIG_EXTCON_GPIO) += extcon-gpio.o
> diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
> deleted file mode 100644
> index aae82db542a5..000000000000
> --- a/drivers/extcon/extcon-arizona.c
> +++ /dev/null
> @@ -1,1816 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0-or-later
> -/*
> - * extcon-arizona.c - Extcon driver Wolfson Arizona devices
> - *
> - * Copyright (C) 2012-2014 Wolfson Microelectronics plc
> - */
> -
> -#include <linux/kernel.h>
> -#include <linux/module.h>
> -#include <linux/i2c.h>
> -#include <linux/slab.h>
> -#include <linux/interrupt.h>
> -#include <linux/err.h>
> -#include <linux/gpio/consumer.h>
> -#include <linux/gpio.h>
> -#include <linux/input.h>
> -#include <linux/platform_device.h>
> -#include <linux/pm_runtime.h>
> -#include <linux/property.h>
> -#include <linux/regulator/consumer.h>
> -#include <linux/extcon-provider.h>
> -
> -#include <sound/soc.h>
> -
> -#include <linux/mfd/arizona/core.h>
> -#include <linux/mfd/arizona/pdata.h>
> -#include <linux/mfd/arizona/registers.h>
> -#include <dt-bindings/mfd/arizona.h>
> -
> -#define ARIZONA_MAX_MICD_RANGE 8
> -
> -#define ARIZONA_MICD_CLAMP_MODE_JDL 0x4
> -#define ARIZONA_MICD_CLAMP_MODE_JDH 0x5
> -#define ARIZONA_MICD_CLAMP_MODE_JDL_GP5H 0x9
> -#define ARIZONA_MICD_CLAMP_MODE_JDH_GP5H 0xb
> -
> -#define ARIZONA_TST_CAP_DEFAULT 0x3
> -#define ARIZONA_TST_CAP_CLAMP 0x1
> -
> -#define ARIZONA_HPDET_MAX 10000
> -
> -#define HPDET_DEBOUNCE 500
> -#define DEFAULT_MICD_TIMEOUT 2000
> -
> -#define ARIZONA_HPDET_WAIT_COUNT 15
> -#define ARIZONA_HPDET_WAIT_DELAY_MS 20
> -
> -#define QUICK_HEADPHONE_MAX_OHM 3
> -#define MICROPHONE_MIN_OHM 1257
> -#define MICROPHONE_MAX_OHM 30000
> -
> -#define MICD_DBTIME_TWO_READINGS 2
> -#define MICD_DBTIME_FOUR_READINGS 4
> -
> -#define MICD_LVL_1_TO_7 (ARIZONA_MICD_LVL_1 | ARIZONA_MICD_LVL_2 | \
> - ARIZONA_MICD_LVL_3 | ARIZONA_MICD_LVL_4 | \
> - ARIZONA_MICD_LVL_5 | ARIZONA_MICD_LVL_6 | \
> - ARIZONA_MICD_LVL_7)
> -
> -#define MICD_LVL_0_TO_7 (ARIZONA_MICD_LVL_0 | MICD_LVL_1_TO_7)
> -
> -#define MICD_LVL_0_TO_8 (MICD_LVL_0_TO_7 | ARIZONA_MICD_LVL_8)
> -
> -struct arizona_extcon_info {
> - struct device *dev;
> - struct arizona *arizona;
> - struct mutex lock;
> - struct regulator *micvdd;
> - struct input_dev *input;
> -
> - u16 last_jackdet;
> -
> - int micd_mode;
> - const struct arizona_micd_config *micd_modes;
> - int micd_num_modes;
> -
> - const struct arizona_micd_range *micd_ranges;
> - int num_micd_ranges;
> -
> - bool micd_reva;
> - bool micd_clamp;
> -
> - struct delayed_work hpdet_work;
> - struct delayed_work micd_detect_work;
> - struct delayed_work micd_timeout_work;
> -
> - bool hpdet_active;
> - bool hpdet_done;
> - bool hpdet_retried;
> -
> - int num_hpdet_res;
> - unsigned int hpdet_res[3];
> -
> - bool mic;
> - bool detecting;
> - int jack_flips;
> -
> - int hpdet_ip_version;
> -
> - struct extcon_dev *edev;
> -
> - struct gpio_desc *micd_pol_gpio;
> -};
> -
> -static const struct arizona_micd_config micd_default_modes[] = {
> - { ARIZONA_ACCDET_SRC, 1, 0 },
> - { 0, 2, 1 },
> -};
> -
> -static const struct arizona_micd_range micd_default_ranges[] = {
> - { .max = 11, .key = BTN_0 },
> - { .max = 28, .key = BTN_1 },
> - { .max = 54, .key = BTN_2 },
> - { .max = 100, .key = BTN_3 },
> - { .max = 186, .key = BTN_4 },
> - { .max = 430, .key = BTN_5 },
> -};
> -
> -/* The number of levels in arizona_micd_levels valid for button thresholds */
> -#define ARIZONA_NUM_MICD_BUTTON_LEVELS 64
> -
> -static const int arizona_micd_levels[] = {
> - 3, 6, 8, 11, 13, 16, 18, 21, 23, 26, 28, 31, 34, 36, 39, 41, 44, 46,
> - 49, 52, 54, 57, 60, 62, 65, 67, 70, 73, 75, 78, 81, 83, 89, 94, 100,
> - 105, 111, 116, 122, 127, 139, 150, 161, 173, 186, 196, 209, 220, 245,
> - 270, 295, 321, 348, 375, 402, 430, 489, 550, 614, 681, 752, 903, 1071,
> - 1257, 30000,
> -};
> -
> -static const unsigned int arizona_cable[] = {
> - EXTCON_MECHANICAL,
> - EXTCON_JACK_MICROPHONE,
> - EXTCON_JACK_HEADPHONE,
> - EXTCON_JACK_LINE_OUT,
> - EXTCON_NONE,
> -};
> -
> -static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info);
> -
> -static void arizona_extcon_hp_clamp(struct arizona_extcon_info *info,
> - bool clamp)
> -{
> - struct arizona *arizona = info->arizona;
> - unsigned int mask = 0, val = 0;
> - unsigned int cap_sel = 0;
> - int ret;
> -
> - switch (arizona->type) {
> - case WM8998:
> - case WM1814:
> - mask = 0;
> - break;
> - case WM5110:
> - case WM8280:
> - mask = ARIZONA_HP1L_SHRTO | ARIZONA_HP1L_FLWR |
> - ARIZONA_HP1L_SHRTI;
> - if (clamp) {
> - val = ARIZONA_HP1L_SHRTO;
> - cap_sel = ARIZONA_TST_CAP_CLAMP;
> - } else {
> - val = ARIZONA_HP1L_FLWR | ARIZONA_HP1L_SHRTI;
> - cap_sel = ARIZONA_TST_CAP_DEFAULT;
> - }
> -
> - ret = regmap_update_bits(arizona->regmap,
> - ARIZONA_HP_TEST_CTRL_1,
> - ARIZONA_HP1_TST_CAP_SEL_MASK,
> - cap_sel);
> - if (ret != 0)
> - dev_warn(arizona->dev,
> - "Failed to set TST_CAP_SEL: %d\n", ret);
> - break;
> - default:
> - mask = ARIZONA_RMV_SHRT_HP1L;
> - if (clamp)
> - val = ARIZONA_RMV_SHRT_HP1L;
> - break;
> - }
> -
> - snd_soc_dapm_mutex_lock(arizona->dapm);
> -
> - arizona->hpdet_clamp = clamp;
> -
> - /* 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 |
> - ARIZONA_OUT1R_ENA, 0);
> - if (ret != 0)
> - dev_warn(arizona->dev,
> - "Failed to disable headphone outputs: %d\n",
> - ret);
> - }
> -
> - if (mask) {
> - ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1L,
> - mask, val);
> - if (ret != 0)
> - dev_warn(arizona->dev, "Failed to do clamp: %d\n",
> - ret);
> -
> - ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1R,
> - mask, val);
> - if (ret != 0)
> - dev_warn(arizona->dev, "Failed to do clamp: %d\n",
> - ret);
> - }
> -
> - /* Restore the desired state while not doing the clamp */
> - if (!clamp) {
> - ret = regmap_update_bits(arizona->regmap,
> - ARIZONA_OUTPUT_ENABLES_1,
> - ARIZONA_OUT1L_ENA |
> - ARIZONA_OUT1R_ENA, arizona->hp_ena);
> - if (ret != 0)
> - dev_warn(arizona->dev,
> - "Failed to restore headphone outputs: %d\n",
> - ret);
> - }
> -
> - snd_soc_dapm_mutex_unlock(arizona->dapm);
> -}
> -
> -static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
> -{
> - struct arizona *arizona = info->arizona;
> -
> - mode %= info->micd_num_modes;
> -
> - gpiod_set_value_cansleep(info->micd_pol_gpio,
> - info->micd_modes[mode].gpio);
> -
> - regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
> - ARIZONA_MICD_BIAS_SRC_MASK,
> - info->micd_modes[mode].bias <<
> - ARIZONA_MICD_BIAS_SRC_SHIFT);
> - regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
> - ARIZONA_ACCDET_SRC, info->micd_modes[mode].src);
> -
> - info->micd_mode = mode;
> -
> - dev_dbg(arizona->dev, "Set jack polarity to %d\n", mode);
> -}
> -
> -static const char *arizona_extcon_get_micbias(struct arizona_extcon_info *info)
> -{
> - switch (info->micd_modes[0].bias) {
> - case 1:
> - return "MICBIAS1";
> - case 2:
> - return "MICBIAS2";
> - case 3:
> - return "MICBIAS3";
> - default:
> - return "MICVDD";
> - }
> -}
> -
> -static void arizona_extcon_pulse_micbias(struct arizona_extcon_info *info)
> -{
> - struct arizona *arizona = info->arizona;
> - const char *widget = arizona_extcon_get_micbias(info);
> - struct snd_soc_dapm_context *dapm = arizona->dapm;
> - struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
> - int ret;
> -
> - ret = snd_soc_component_force_enable_pin(component, widget);
> - if (ret != 0)
> - dev_warn(arizona->dev, "Failed to enable %s: %d\n",
> - widget, ret);
> -
> - snd_soc_dapm_sync(dapm);
> -
> - if (!arizona->pdata.micd_force_micbias) {
> - ret = snd_soc_component_disable_pin(component, widget);
> - if (ret != 0)
> - dev_warn(arizona->dev, "Failed to disable %s: %d\n",
> - widget, ret);
> -
> - snd_soc_dapm_sync(dapm);
> - }
> -}
> -
> -static void arizona_start_mic(struct arizona_extcon_info *info)
> -{
> - struct arizona *arizona = info->arizona;
> - bool change;
> - int ret;
> - unsigned int mode;
> -
> - /* Microphone detection can't use idle mode */
> - pm_runtime_get(info->dev);
> -
> - if (info->detecting) {
> - ret = regulator_allow_bypass(info->micvdd, false);
> - if (ret != 0) {
> - dev_err(arizona->dev,
> - "Failed to regulate MICVDD: %d\n",
> - ret);
> - }
> - }
> -
> - ret = regulator_enable(info->micvdd);
> - if (ret != 0) {
> - dev_err(arizona->dev, "Failed to enable MICVDD: %d\n",
> - ret);
> - }
> -
> - if (info->micd_reva) {
> - const struct reg_sequence reva[] = {
> - { 0x80, 0x3 },
> - { 0x294, 0x0 },
> - { 0x80, 0x0 },
> - };
> -
> - regmap_multi_reg_write(arizona->regmap, reva, ARRAY_SIZE(reva));
> - }
> -
> - if (info->detecting && arizona->pdata.micd_software_compare)
> - mode = ARIZONA_ACCDET_MODE_ADC;
> - else
> - mode = ARIZONA_ACCDET_MODE_MIC;
> -
> - regmap_update_bits(arizona->regmap,
> - ARIZONA_ACCESSORY_DETECT_MODE_1,
> - ARIZONA_ACCDET_MODE_MASK, mode);
> -
> - arizona_extcon_pulse_micbias(info);
> -
> - ret = regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
> - ARIZONA_MICD_ENA, ARIZONA_MICD_ENA,
> - &change);
> - if (ret < 0) {
> - dev_err(arizona->dev, "Failed to enable micd: %d\n", ret);
> - } else if (!change) {
> - regulator_disable(info->micvdd);
> - pm_runtime_put_autosuspend(info->dev);
> - }
> -}
> -
> -static void arizona_stop_mic(struct arizona_extcon_info *info)
> -{
> - struct arizona *arizona = info->arizona;
> - const char *widget = arizona_extcon_get_micbias(info);
> - struct snd_soc_dapm_context *dapm = arizona->dapm;
> - struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
> - bool change = false;
> - int ret;
> -
> - ret = regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
> - ARIZONA_MICD_ENA, 0,
> - &change);
> - if (ret < 0)
> - dev_err(arizona->dev, "Failed to disable micd: %d\n", ret);
> -
> - ret = snd_soc_component_disable_pin(component, widget);
> - if (ret != 0)
> - dev_warn(arizona->dev,
> - "Failed to disable %s: %d\n",
> - widget, ret);
> -
> - snd_soc_dapm_sync(dapm);
> -
> - if (info->micd_reva) {
> - const struct reg_sequence reva[] = {
> - { 0x80, 0x3 },
> - { 0x294, 0x2 },
> - { 0x80, 0x0 },
> - };
> -
> - regmap_multi_reg_write(arizona->regmap, reva, ARRAY_SIZE(reva));
> - }
> -
> - ret = regulator_allow_bypass(info->micvdd, true);
> - if (ret != 0) {
> - dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n",
> - ret);
> - }
> -
> - if (change) {
> - regulator_disable(info->micvdd);
> - pm_runtime_mark_last_busy(info->dev);
> - pm_runtime_put_autosuspend(info->dev);
> - }
> -}
> -
> -static struct {
> - unsigned int threshold;
> - unsigned int factor_a;
> - unsigned int factor_b;
> -} arizona_hpdet_b_ranges[] = {
> - { 100, 5528, 362464 },
> - { 169, 11084, 6186851 },
> - { 169, 11065, 65460395 },
> -};
> -
> -#define ARIZONA_HPDET_B_RANGE_MAX 0x3fb
> -
> -static struct {
> - int min;
> - int max;
> -} arizona_hpdet_c_ranges[] = {
> - { 0, 30 },
> - { 8, 100 },
> - { 100, 1000 },
> - { 1000, 10000 },
> -};
> -
> -static int arizona_hpdet_read(struct arizona_extcon_info *info)
> -{
> - struct arizona *arizona = info->arizona;
> - unsigned int val, range;
> - int ret;
> -
> - ret = regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_2, &val);
> - if (ret != 0) {
> - dev_err(arizona->dev, "Failed to read HPDET status: %d\n",
> - ret);
> - return ret;
> - }
> -
> - switch (info->hpdet_ip_version) {
> - case 0:
> - if (!(val & ARIZONA_HP_DONE)) {
> - dev_err(arizona->dev, "HPDET did not complete: %x\n",
> - val);
> - return -EAGAIN;
> - }
> -
> - val &= ARIZONA_HP_LVL_MASK;
> - break;
> -
> - case 1:
> - if (!(val & ARIZONA_HP_DONE_B)) {
> - dev_err(arizona->dev, "HPDET did not complete: %x\n",
> - val);
> - return -EAGAIN;
> - }
> -
> - ret = regmap_read(arizona->regmap, ARIZONA_HP_DACVAL, &val);
> - if (ret != 0) {
> - dev_err(arizona->dev, "Failed to read HP value: %d\n",
> - ret);
> - return -EAGAIN;
> - }
> -
> - regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
> - &range);
> - range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK)
> - >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
> -
> - if (range < ARRAY_SIZE(arizona_hpdet_b_ranges) - 1 &&
> - (val < arizona_hpdet_b_ranges[range].threshold ||
> - val >= ARIZONA_HPDET_B_RANGE_MAX)) {
> - range++;
> - dev_dbg(arizona->dev, "Moving to HPDET range %d\n",
> - range);
> - regmap_update_bits(arizona->regmap,
> - ARIZONA_HEADPHONE_DETECT_1,
> - ARIZONA_HP_IMPEDANCE_RANGE_MASK,
> - range <<
> - ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
> - return -EAGAIN;
> - }
> -
> - /* If we go out of range report top of range */
> - if (val < arizona_hpdet_b_ranges[range].threshold ||
> - val >= ARIZONA_HPDET_B_RANGE_MAX) {
> - dev_dbg(arizona->dev, "Measurement out of range\n");
> - return ARIZONA_HPDET_MAX;
> - }
> -
> - dev_dbg(arizona->dev, "HPDET read %d in range %d\n",
> - val, range);
> -
> - val = arizona_hpdet_b_ranges[range].factor_b
> - / ((val * 100) -
> - arizona_hpdet_b_ranges[range].factor_a);
> - break;
> -
> - case 2:
> - if (!(val & ARIZONA_HP_DONE_B)) {
> - dev_err(arizona->dev, "HPDET did not complete: %x\n",
> - val);
> - return -EAGAIN;
> - }
> -
> - val &= ARIZONA_HP_LVL_B_MASK;
> - /* Convert to ohms, the value is in 0.5 ohm increments */
> - val /= 2;
> -
> - regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
> - &range);
> - range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK)
> - >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
> -
> - /* Skip up a range, or report? */
> - if (range < ARRAY_SIZE(arizona_hpdet_c_ranges) - 1 &&
> - (val >= arizona_hpdet_c_ranges[range].max)) {
> - range++;
> - dev_dbg(arizona->dev, "Moving to HPDET range %d-%d\n",
> - arizona_hpdet_c_ranges[range].min,
> - arizona_hpdet_c_ranges[range].max);
> - regmap_update_bits(arizona->regmap,
> - ARIZONA_HEADPHONE_DETECT_1,
> - ARIZONA_HP_IMPEDANCE_RANGE_MASK,
> - range <<
> - ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
> - return -EAGAIN;
> - }
> -
> - if (range && (val < arizona_hpdet_c_ranges[range].min)) {
> - dev_dbg(arizona->dev, "Reporting range boundary %d\n",
> - arizona_hpdet_c_ranges[range].min);
> - val = arizona_hpdet_c_ranges[range].min;
> - }
> - break;
> -
> - default:
> - dev_warn(arizona->dev, "Unknown HPDET IP revision %d\n",
> - info->hpdet_ip_version);
> - return -EINVAL;
> - }
> -
> - dev_dbg(arizona->dev, "HP impedance %d ohms\n", val);
> - return val;
> -}
> -
> -static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading,
> - bool *mic)
> -{
> - struct arizona *arizona = info->arizona;
> - int id_gpio = arizona->pdata.hpdet_id_gpio;
> -
> - if (!arizona->pdata.hpdet_acc_id)
> - return 0;
> -
> - /*
> - * If we're using HPDET for accessory identification we need
> - * to take multiple measurements, step through them in sequence.
> - */
> - info->hpdet_res[info->num_hpdet_res++] = *reading;
> -
> - /* Only check the mic directly if we didn't already ID it */
> - if (id_gpio && info->num_hpdet_res == 1) {
> - dev_dbg(arizona->dev, "Measuring mic\n");
> -
> - regmap_update_bits(arizona->regmap,
> - ARIZONA_ACCESSORY_DETECT_MODE_1,
> - ARIZONA_ACCDET_MODE_MASK |
> - ARIZONA_ACCDET_SRC,
> - ARIZONA_ACCDET_MODE_HPR |
> - info->micd_modes[0].src);
> -
> - gpio_set_value_cansleep(id_gpio, 1);
> -
> - regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
> - ARIZONA_HP_POLL, ARIZONA_HP_POLL);
> - return -EAGAIN;
> - }
> -
> - /* OK, got both. Now, compare... */
> - dev_dbg(arizona->dev, "HPDET measured %d %d\n",
> - info->hpdet_res[0], info->hpdet_res[1]);
> -
> - /* Take the headphone impedance for the main report */
> - *reading = info->hpdet_res[0];
> -
> - /* Sometimes we get false readings due to slow insert */
> - if (*reading >= ARIZONA_HPDET_MAX && !info->hpdet_retried) {
> - dev_dbg(arizona->dev, "Retrying high impedance\n");
> - info->num_hpdet_res = 0;
> - info->hpdet_retried = true;
> - arizona_start_hpdet_acc_id(info);
> - pm_runtime_put(info->dev);
> - return -EAGAIN;
> - }
> -
> - /*
> - * If we measure the mic as high impedance
> - */
> - if (!id_gpio || info->hpdet_res[1] > 50) {
> - dev_dbg(arizona->dev, "Detected mic\n");
> - *mic = true;
> - info->detecting = true;
> - } else {
> - dev_dbg(arizona->dev, "Detected headphone\n");
> - }
> -
> - /* Make sure everything is reset back to the real polarity */
> - regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
> - ARIZONA_ACCDET_SRC, info->micd_modes[0].src);
> -
> - return 0;
> -}
> -
> -static irqreturn_t arizona_hpdet_irq(int irq, void *data)
> -{
> - struct arizona_extcon_info *info = data;
> - struct arizona *arizona = info->arizona;
> - int id_gpio = arizona->pdata.hpdet_id_gpio;
> - unsigned int report = EXTCON_JACK_HEADPHONE;
> - int ret, reading;
> - bool mic = false;
> -
> - mutex_lock(&info->lock);
> -
> - /* If we got a spurious IRQ for some reason then ignore it */
> - if (!info->hpdet_active) {
> - dev_warn(arizona->dev, "Spurious HPDET IRQ\n");
> - mutex_unlock(&info->lock);
> - return IRQ_NONE;
> - }
> -
> - /* If the cable was removed while measuring ignore the result */
> - ret = extcon_get_state(info->edev, EXTCON_MECHANICAL);
> - if (ret < 0) {
> - dev_err(arizona->dev, "Failed to check cable state: %d\n",
> - ret);
> - goto out;
> - } else if (!ret) {
> - dev_dbg(arizona->dev, "Ignoring HPDET for removed cable\n");
> - goto done;
> - }
> -
> - ret = arizona_hpdet_read(info);
> - if (ret == -EAGAIN)
> - goto out;
> - else if (ret < 0)
> - goto done;
> - reading = ret;
> -
> - /* Reset back to starting range */
> - regmap_update_bits(arizona->regmap,
> - ARIZONA_HEADPHONE_DETECT_1,
> - ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
> - 0);
> -
> - ret = arizona_hpdet_do_id(info, &reading, &mic);
> - if (ret == -EAGAIN)
> - goto out;
> - else if (ret < 0)
> - goto done;
> -
> - /* Report high impedence cables as line outputs */
> - if (reading >= 5000)
> - report = EXTCON_JACK_LINE_OUT;
> - else
> - report = EXTCON_JACK_HEADPHONE;
> -
> - ret = extcon_set_state_sync(info->edev, report, true);
> - if (ret != 0)
> - dev_err(arizona->dev, "Failed to report HP/line: %d\n",
> - ret);
> -
> -done:
> - /* Reset back to starting range */
> - regmap_update_bits(arizona->regmap,
> - ARIZONA_HEADPHONE_DETECT_1,
> - ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
> - 0);
> -
> - arizona_extcon_hp_clamp(info, false);
> -
> - if (id_gpio)
> - gpio_set_value_cansleep(id_gpio, 0);
> -
> - /* If we have a mic then reenable MICDET */
> - if (mic || info->mic)
> - arizona_start_mic(info);
> -
> - if (info->hpdet_active) {
> - pm_runtime_put_autosuspend(info->dev);
> - info->hpdet_active = false;
> - }
> -
> - info->hpdet_done = true;
> -
> -out:
> - mutex_unlock(&info->lock);
> -
> - return IRQ_HANDLED;
> -}
> -
> -static void arizona_identify_headphone(struct arizona_extcon_info *info)
> -{
> - struct arizona *arizona = info->arizona;
> - int ret;
> -
> - if (info->hpdet_done)
> - return;
> -
> - dev_dbg(arizona->dev, "Starting HPDET\n");
> -
> - /* Make sure we keep the device enabled during the measurement */
> - pm_runtime_get(info->dev);
> -
> - info->hpdet_active = true;
> -
> - arizona_stop_mic(info);
> -
> - arizona_extcon_hp_clamp(info, true);
> -
> - ret = regmap_update_bits(arizona->regmap,
> - ARIZONA_ACCESSORY_DETECT_MODE_1,
> - ARIZONA_ACCDET_MODE_MASK,
> - arizona->pdata.hpdet_channel);
> - if (ret != 0) {
> - dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
> - goto err;
> - }
> -
> - ret = regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
> - ARIZONA_HP_POLL, ARIZONA_HP_POLL);
> - if (ret != 0) {
> - dev_err(arizona->dev, "Can't start HPDETL measurement: %d\n",
> - ret);
> - goto err;
> - }
> -
> - return;
> -
> -err:
> - arizona_extcon_hp_clamp(info, false);
> - pm_runtime_put_autosuspend(info->dev);
> -
> - /* Just report headphone */
> - ret = extcon_set_state_sync(info->edev, EXTCON_JACK_HEADPHONE, true);
> - if (ret != 0)
> - dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
> -
> - if (info->mic)
> - arizona_start_mic(info);
> -
> - info->hpdet_active = false;
> -}
> -
> -static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info)
> -{
> - struct arizona *arizona = info->arizona;
> - int hp_reading = 32;
> - bool mic;
> - int ret;
> -
> - dev_dbg(arizona->dev, "Starting identification via HPDET\n");
> -
> - /* Make sure we keep the device enabled during the measurement */
> - pm_runtime_get_sync(info->dev);
> -
> - info->hpdet_active = true;
> -
> - arizona_extcon_hp_clamp(info, true);
> -
> - ret = regmap_update_bits(arizona->regmap,
> - ARIZONA_ACCESSORY_DETECT_MODE_1,
> - ARIZONA_ACCDET_SRC | ARIZONA_ACCDET_MODE_MASK,
> - info->micd_modes[0].src |
> - arizona->pdata.hpdet_channel);
> - if (ret != 0) {
> - dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
> - goto err;
> - }
> -
> - if (arizona->pdata.hpdet_acc_id_line) {
> - ret = regmap_update_bits(arizona->regmap,
> - ARIZONA_HEADPHONE_DETECT_1,
> - ARIZONA_HP_POLL, ARIZONA_HP_POLL);
> - if (ret != 0) {
> - dev_err(arizona->dev,
> - "Can't start HPDETL measurement: %d\n",
> - ret);
> - goto err;
> - }
> - } else {
> - arizona_hpdet_do_id(info, &hp_reading, &mic);
> - }
> -
> - return;
> -
> -err:
> - /* Just report headphone */
> - ret = extcon_set_state_sync(info->edev, EXTCON_JACK_HEADPHONE, true);
> - if (ret != 0)
> - dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
> -
> - info->hpdet_active = false;
> -}
> -
> -static void arizona_micd_timeout_work(struct work_struct *work)
> -{
> - struct arizona_extcon_info *info = container_of(work,
> - struct arizona_extcon_info,
> - micd_timeout_work.work);
> -
> - mutex_lock(&info->lock);
> -
> - dev_dbg(info->arizona->dev, "MICD timed out, reporting HP\n");
> -
> - info->detecting = false;
> -
> - arizona_identify_headphone(info);
> -
> - mutex_unlock(&info->lock);
> -}
> -
> -static int arizona_micd_adc_read(struct arizona_extcon_info *info)
> -{
> - struct arizona *arizona = info->arizona;
> - unsigned int val;
> - int ret;
> -
> - /* Must disable MICD before we read the ADCVAL */
> - regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
> - ARIZONA_MICD_ENA, 0);
> -
> - ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_4, &val);
> - if (ret != 0) {
> - dev_err(arizona->dev,
> - "Failed to read MICDET_ADCVAL: %d\n", ret);
> - return ret;
> - }
> -
> - dev_dbg(arizona->dev, "MICDET_ADCVAL: %x\n", val);
> -
> - val &= ARIZONA_MICDET_ADCVAL_MASK;
> - if (val < ARRAY_SIZE(arizona_micd_levels))
> - val = arizona_micd_levels[val];
> - else
> - val = INT_MAX;
> -
> - if (val <= QUICK_HEADPHONE_MAX_OHM)
> - val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_0;
> - else if (val <= MICROPHONE_MIN_OHM)
> - val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_1;
> - else if (val <= MICROPHONE_MAX_OHM)
> - val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_8;
> - else
> - val = ARIZONA_MICD_LVL_8;
> -
> - return val;
> -}
> -
> -static int arizona_micd_read(struct arizona_extcon_info *info)
> -{
> - struct arizona *arizona = info->arizona;
> - unsigned int val = 0;
> - int ret, i;
> -
> - for (i = 0; i < 10 && !(val & MICD_LVL_0_TO_8); i++) {
> - ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val);
> - if (ret != 0) {
> - dev_err(arizona->dev,
> - "Failed to read MICDET: %d\n", ret);
> - return ret;
> - }
> -
> - dev_dbg(arizona->dev, "MICDET: %x\n", val);
> -
> - if (!(val & ARIZONA_MICD_VALID)) {
> - dev_warn(arizona->dev,
> - "Microphone detection state invalid\n");
> - return -EINVAL;
> - }
> - }
> -
> - if (i == 10 && !(val & MICD_LVL_0_TO_8)) {
> - dev_err(arizona->dev, "Failed to get valid MICDET value\n");
> - return -EINVAL;
> - }
> -
> - return val;
> -}
> -
> -static int arizona_micdet_reading(void *priv)
> -{
> - struct arizona_extcon_info *info = priv;
> - struct arizona *arizona = info->arizona;
> - int ret, val;
> -
> - if (info->detecting && arizona->pdata.micd_software_compare)
> - ret = arizona_micd_adc_read(info);
> - else
> - ret = arizona_micd_read(info);
> - if (ret < 0)
> - return ret;
> -
> - val = ret;
> -
> - /* Due to jack detect this should never happen */
> - if (!(val & ARIZONA_MICD_STS)) {
> - dev_warn(arizona->dev, "Detected open circuit\n");
> - info->mic = false;
> - info->detecting = false;
> - arizona_identify_headphone(info);
> - return 0;
> - }
> -
> - /* If we got a high impedence we should have a headset, report it. */
> - if (val & ARIZONA_MICD_LVL_8) {
> - info->mic = true;
> - info->detecting = false;
> -
> - arizona_identify_headphone(info);
> -
> - ret = extcon_set_state_sync(info->edev,
> - EXTCON_JACK_MICROPHONE, true);
> - if (ret != 0)
> - dev_err(arizona->dev, "Headset report failed: %d\n",
> - ret);
> -
> - /* Don't need to regulate for button detection */
> - ret = regulator_allow_bypass(info->micvdd, true);
> - if (ret != 0) {
> - dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n",
> - ret);
> - }
> -
> - return 0;
> - }
> -
> - /* If we detected a lower impedence during initial startup
> - * then we probably have the wrong polarity, flip it. Don't
> - * do this for the lowest impedences to speed up detection of
> - * plain headphones. If both polarities report a low
> - * impedence then give up and report headphones.
> - */
> - if (val & MICD_LVL_1_TO_7) {
> - if (info->jack_flips >= info->micd_num_modes * 10) {
> - dev_dbg(arizona->dev, "Detected HP/line\n");
> -
> - info->detecting = false;
> -
> - arizona_identify_headphone(info);
> - } else {
> - info->micd_mode++;
> - if (info->micd_mode == info->micd_num_modes)
> - info->micd_mode = 0;
> - arizona_extcon_set_mode(info, info->micd_mode);
> -
> - info->jack_flips++;
> -
> - if (arizona->pdata.micd_software_compare)
> - regmap_update_bits(arizona->regmap,
> - ARIZONA_MIC_DETECT_1,
> - ARIZONA_MICD_ENA,
> - ARIZONA_MICD_ENA);
> -
> - queue_delayed_work(system_power_efficient_wq,
> - &info->micd_timeout_work,
> - msecs_to_jiffies(arizona->pdata.micd_timeout));
> - }
> -
> - return 0;
> - }
> -
> - /*
> - * If we're still detecting and we detect a short then we've
> - * got a headphone.
> - */
> - dev_dbg(arizona->dev, "Headphone detected\n");
> - info->detecting = false;
> -
> - arizona_identify_headphone(info);
> -
> - return 0;
> -}
> -
> -static int arizona_button_reading(void *priv)
> -{
> - struct arizona_extcon_info *info = priv;
> - struct arizona *arizona = info->arizona;
> - int val, key, lvl, i;
> -
> - val = arizona_micd_read(info);
> - if (val < 0)
> - return val;
> -
> - /*
> - * If we're still detecting and we detect a short then we've
> - * got a headphone. Otherwise it's a button press.
> - */
> - if (val & MICD_LVL_0_TO_7) {
> - if (info->mic) {
> - dev_dbg(arizona->dev, "Mic button detected\n");
> -
> - lvl = val & ARIZONA_MICD_LVL_MASK;
> - lvl >>= ARIZONA_MICD_LVL_SHIFT;
> -
> - for (i = 0; i < info->num_micd_ranges; i++)
> - input_report_key(info->input,
> - info->micd_ranges[i].key, 0);
> -
> - if (lvl && ffs(lvl) - 1 < info->num_micd_ranges) {
> - key = info->micd_ranges[ffs(lvl) - 1].key;
> - input_report_key(info->input, key, 1);
> - input_sync(info->input);
> - } else {
> - dev_err(arizona->dev, "Button out of range\n");
> - }
> - } else {
> - dev_warn(arizona->dev, "Button with no mic: %x\n",
> - val);
> - }
> - } else {
> - dev_dbg(arizona->dev, "Mic button released\n");
> - for (i = 0; i < info->num_micd_ranges; i++)
> - input_report_key(info->input,
> - info->micd_ranges[i].key, 0);
> - input_sync(info->input);
> - arizona_extcon_pulse_micbias(info);
> - }
> -
> - return 0;
> -}
> -
> -static void arizona_micd_detect(struct work_struct *work)
> -{
> - struct arizona_extcon_info *info = container_of(work,
> - struct arizona_extcon_info,
> - micd_detect_work.work);
> - struct arizona *arizona = info->arizona;
> - int ret;
> -
> - cancel_delayed_work_sync(&info->micd_timeout_work);
> -
> - mutex_lock(&info->lock);
> -
> - /* If the cable was removed while measuring ignore the result */
> - ret = extcon_get_state(info->edev, EXTCON_MECHANICAL);
> - if (ret < 0) {
> - dev_err(arizona->dev, "Failed to check cable state: %d\n",
> - ret);
> - mutex_unlock(&info->lock);
> - return;
> - } else if (!ret) {
> - dev_dbg(arizona->dev, "Ignoring MICDET for removed cable\n");
> - mutex_unlock(&info->lock);
> - return;
> - }
> -
> - if (info->detecting)
> - arizona_micdet_reading(info);
> - else
> - arizona_button_reading(info);
> -
> - pm_runtime_mark_last_busy(info->dev);
> - mutex_unlock(&info->lock);
> -}
> -
> -static irqreturn_t arizona_micdet(int irq, void *data)
> -{
> - struct arizona_extcon_info *info = data;
> - struct arizona *arizona = info->arizona;
> - int debounce = arizona->pdata.micd_detect_debounce;
> -
> - cancel_delayed_work_sync(&info->micd_detect_work);
> - cancel_delayed_work_sync(&info->micd_timeout_work);
> -
> - mutex_lock(&info->lock);
> - if (!info->detecting)
> - debounce = 0;
> - mutex_unlock(&info->lock);
> -
> - if (debounce)
> - queue_delayed_work(system_power_efficient_wq,
> - &info->micd_detect_work,
> - msecs_to_jiffies(debounce));
> - else
> - arizona_micd_detect(&info->micd_detect_work.work);
> -
> - return IRQ_HANDLED;
> -}
> -
> -static void arizona_hpdet_work(struct work_struct *work)
> -{
> - struct arizona_extcon_info *info = container_of(work,
> - struct arizona_extcon_info,
> - hpdet_work.work);
> -
> - mutex_lock(&info->lock);
> - arizona_start_hpdet_acc_id(info);
> - mutex_unlock(&info->lock);
> -}
> -
> -static int arizona_hpdet_wait(struct arizona_extcon_info *info)
> -{
> - struct arizona *arizona = info->arizona;
> - unsigned int val;
> - int i, ret;
> -
> - for (i = 0; i < ARIZONA_HPDET_WAIT_COUNT; i++) {
> - ret = regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_2,
> - &val);
> - if (ret) {
> - dev_err(arizona->dev,
> - "Failed to read HPDET state: %d\n", ret);
> - return ret;
> - }
> -
> - switch (info->hpdet_ip_version) {
> - case 0:
> - if (val & ARIZONA_HP_DONE)
> - return 0;
> - break;
> - default:
> - if (val & ARIZONA_HP_DONE_B)
> - return 0;
> - break;
> - }
> -
> - msleep(ARIZONA_HPDET_WAIT_DELAY_MS);
> - }
> -
> - dev_warn(arizona->dev, "HPDET did not appear to complete\n");
> -
> - return -ETIMEDOUT;
> -}
> -
> -static irqreturn_t arizona_jackdet(int irq, void *data)
> -{
> - struct arizona_extcon_info *info = data;
> - struct arizona *arizona = info->arizona;
> - unsigned int val, present, mask;
> - bool cancelled_hp, cancelled_mic;
> - int ret, i;
> -
> - cancelled_hp = cancel_delayed_work_sync(&info->hpdet_work);
> - cancelled_mic = cancel_delayed_work_sync(&info->micd_timeout_work);
> -
> - pm_runtime_get_sync(info->dev);
> -
> - mutex_lock(&info->lock);
> -
> - if (info->micd_clamp) {
> - mask = ARIZONA_MICD_CLAMP_STS;
> - present = 0;
> - } else {
> - mask = ARIZONA_JD1_STS;
> - if (arizona->pdata.jd_invert)
> - present = 0;
> - else
> - present = ARIZONA_JD1_STS;
> - }
> -
> - ret = regmap_read(arizona->regmap, ARIZONA_AOD_IRQ_RAW_STATUS, &val);
> - if (ret != 0) {
> - dev_err(arizona->dev, "Failed to read jackdet status: %d\n",
> - ret);
> - mutex_unlock(&info->lock);
> - pm_runtime_put_autosuspend(info->dev);
> - return IRQ_NONE;
> - }
> -
> - val &= mask;
> - if (val == info->last_jackdet) {
> - dev_dbg(arizona->dev, "Suppressing duplicate JACKDET\n");
> - if (cancelled_hp)
> - queue_delayed_work(system_power_efficient_wq,
> - &info->hpdet_work,
> - msecs_to_jiffies(HPDET_DEBOUNCE));
> -
> - if (cancelled_mic) {
> - int micd_timeout = arizona->pdata.micd_timeout;
> -
> - queue_delayed_work(system_power_efficient_wq,
> - &info->micd_timeout_work,
> - msecs_to_jiffies(micd_timeout));
> - }
> -
> - goto out;
> - }
> - info->last_jackdet = val;
> -
> - if (info->last_jackdet == present) {
> - dev_dbg(arizona->dev, "Detected jack\n");
> - ret = extcon_set_state_sync(info->edev,
> - EXTCON_MECHANICAL, true);
> -
> - if (ret != 0)
> - dev_err(arizona->dev, "Mechanical report failed: %d\n",
> - ret);
> -
> - info->detecting = true;
> - info->mic = false;
> - info->jack_flips = 0;
> -
> - if (!arizona->pdata.hpdet_acc_id) {
> - arizona_start_mic(info);
> - } else {
> - queue_delayed_work(system_power_efficient_wq,
> - &info->hpdet_work,
> - msecs_to_jiffies(HPDET_DEBOUNCE));
> - }
> -
> - if (info->micd_clamp || !arizona->pdata.jd_invert)
> - regmap_update_bits(arizona->regmap,
> - ARIZONA_JACK_DETECT_DEBOUNCE,
> - ARIZONA_MICD_CLAMP_DB |
> - ARIZONA_JD1_DB, 0);
> - } else {
> - dev_dbg(arizona->dev, "Detected jack removal\n");
> -
> - arizona_stop_mic(info);
> -
> - info->num_hpdet_res = 0;
> - for (i = 0; i < ARRAY_SIZE(info->hpdet_res); i++)
> - info->hpdet_res[i] = 0;
> - info->mic = false;
> - info->hpdet_done = false;
> - info->hpdet_retried = false;
> -
> - for (i = 0; i < info->num_micd_ranges; i++)
> - input_report_key(info->input,
> - info->micd_ranges[i].key, 0);
> - input_sync(info->input);
> -
> - for (i = 0; i < ARRAY_SIZE(arizona_cable) - 1; i++) {
> - ret = extcon_set_state_sync(info->edev,
> - arizona_cable[i], false);
> - if (ret != 0)
> - dev_err(arizona->dev,
> - "Removal report failed: %d\n", ret);
> - }
> -
> - /*
> - * If the jack was removed during a headphone detection we
> - * need to wait for the headphone detection to finish, as
> - * it can not be aborted. We don't want to be able to start
> - * a new headphone detection from a fresh insert until this
> - * one is finished.
> - */
> - arizona_hpdet_wait(info);
> -
> - regmap_update_bits(arizona->regmap,
> - ARIZONA_JACK_DETECT_DEBOUNCE,
> - ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB,
> - ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB);
> - }
> -
> -out:
> - /* Clear trig_sts to make sure DCVDD is not forced up */
> - regmap_write(arizona->regmap, ARIZONA_AOD_WKUP_AND_TRIG,
> - ARIZONA_MICD_CLAMP_FALL_TRIG_STS |
> - ARIZONA_MICD_CLAMP_RISE_TRIG_STS |
> - ARIZONA_JD1_FALL_TRIG_STS |
> - ARIZONA_JD1_RISE_TRIG_STS);
> -
> - mutex_unlock(&info->lock);
> -
> - pm_runtime_mark_last_busy(info->dev);
> - pm_runtime_put_autosuspend(info->dev);
> -
> - return IRQ_HANDLED;
> -}
> -
> -/* Map a level onto a slot in the register bank */
> -static void arizona_micd_set_level(struct arizona *arizona, int index,
> - unsigned int level)
> -{
> - int reg;
> - unsigned int mask;
> -
> - reg = ARIZONA_MIC_DETECT_LEVEL_4 - (index / 2);
> -
> - if (!(index % 2)) {
> - mask = 0x3f00;
> - level <<= 8;
> - } else {
> - mask = 0x3f;
> - }
> -
> - /* Program the level itself */
> - regmap_update_bits(arizona->regmap, reg, mask, level);
> -}
> -
> -static int arizona_extcon_get_micd_configs(struct device *dev,
> - struct arizona *arizona)
> -{
> - const char * const prop = "wlf,micd-configs";
> - const int entries_per_config = 3;
> - struct arizona_micd_config *micd_configs;
> - int nconfs, ret;
> - int i, j;
> - u32 *vals;
> -
> - nconfs = device_property_count_u32(arizona->dev, prop);
> - if (nconfs <= 0)
> - return 0;
> -
> - vals = kcalloc(nconfs, sizeof(u32), GFP_KERNEL);
> - if (!vals)
> - return -ENOMEM;
> -
> - ret = device_property_read_u32_array(arizona->dev, prop, vals, nconfs);
> - if (ret < 0)
> - goto out;
> -
> - nconfs /= entries_per_config;
> - micd_configs = devm_kcalloc(dev, nconfs, sizeof(*micd_configs),
> - GFP_KERNEL);
> - if (!micd_configs) {
> - ret = -ENOMEM;
> - goto out;
> - }
> -
> - for (i = 0, j = 0; i < nconfs; ++i) {
> - micd_configs[i].src = vals[j++] ? ARIZONA_ACCDET_SRC : 0;
> - micd_configs[i].bias = vals[j++];
> - micd_configs[i].gpio = vals[j++];
> - }
> -
> - arizona->pdata.micd_configs = micd_configs;
> - arizona->pdata.num_micd_configs = nconfs;
> -
> -out:
> - kfree(vals);
> - return ret;
> -}
> -
> -static int arizona_extcon_device_get_pdata(struct device *dev,
> - struct arizona *arizona)
> -{
> - struct arizona_pdata *pdata = &arizona->pdata;
> - unsigned int val = ARIZONA_ACCDET_MODE_HPL;
> - int ret;
> -
> - device_property_read_u32(arizona->dev, "wlf,hpdet-channel", &val);
> - switch (val) {
> - case ARIZONA_ACCDET_MODE_HPL:
> - case ARIZONA_ACCDET_MODE_HPR:
> - pdata->hpdet_channel = val;
> - break;
> - default:
> - dev_err(arizona->dev,
> - "Wrong wlf,hpdet-channel DT value %d\n", val);
> - pdata->hpdet_channel = ARIZONA_ACCDET_MODE_HPL;
> - }
> -
> - device_property_read_u32(arizona->dev, "wlf,micd-detect-debounce",
> - &pdata->micd_detect_debounce);
> -
> - device_property_read_u32(arizona->dev, "wlf,micd-bias-start-time",
> - &pdata->micd_bias_start_time);
> -
> - device_property_read_u32(arizona->dev, "wlf,micd-rate",
> - &pdata->micd_rate);
> -
> - device_property_read_u32(arizona->dev, "wlf,micd-dbtime",
> - &pdata->micd_dbtime);
> -
> - device_property_read_u32(arizona->dev, "wlf,micd-timeout-ms",
> - &pdata->micd_timeout);
> -
> - pdata->micd_force_micbias = device_property_read_bool(arizona->dev,
> - "wlf,micd-force-micbias");
> -
> - pdata->micd_software_compare = device_property_read_bool(arizona->dev,
> - "wlf,micd-software-compare");
> -
> - pdata->jd_invert = device_property_read_bool(arizona->dev,
> - "wlf,jd-invert");
> -
> - device_property_read_u32(arizona->dev, "wlf,gpsw", &pdata->gpsw);
> -
> - pdata->jd_gpio5 = device_property_read_bool(arizona->dev,
> - "wlf,use-jd2");
> - pdata->jd_gpio5_nopull = device_property_read_bool(arizona->dev,
> - "wlf,use-jd2-nopull");
> -
> - ret = arizona_extcon_get_micd_configs(dev, arizona);
> - if (ret < 0)
> - dev_err(arizona->dev, "Failed to read micd configs: %d\n", ret);
> -
> - return 0;
> -}
> -
> -static int arizona_extcon_probe(struct platform_device *pdev)
> -{
> - struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
> - struct arizona_pdata *pdata = &arizona->pdata;
> - struct arizona_extcon_info *info;
> - unsigned int val;
> - unsigned int clamp_mode;
> - int jack_irq_fall, jack_irq_rise;
> - int ret, mode, i, j;
> -
> - if (!arizona->dapm || !arizona->dapm->card)
> - return -EPROBE_DEFER;
> -
> - info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
> - if (!info)
> - return -ENOMEM;
> -
> - if (!dev_get_platdata(arizona->dev))
> - arizona_extcon_device_get_pdata(&pdev->dev, arizona);
> -
> - info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD");
> - if (IS_ERR(info->micvdd)) {
> - ret = PTR_ERR(info->micvdd);
> - dev_err(arizona->dev, "Failed to get MICVDD: %d\n", ret);
> - return ret;
> - }
> -
> - mutex_init(&info->lock);
> - info->arizona = arizona;
> - info->dev = &pdev->dev;
> - info->last_jackdet = ~(ARIZONA_MICD_CLAMP_STS | ARIZONA_JD1_STS);
> - INIT_DELAYED_WORK(&info->hpdet_work, arizona_hpdet_work);
> - INIT_DELAYED_WORK(&info->micd_detect_work, arizona_micd_detect);
> - INIT_DELAYED_WORK(&info->micd_timeout_work, arizona_micd_timeout_work);
> - platform_set_drvdata(pdev, info);
> -
> - switch (arizona->type) {
> - case WM5102:
> - switch (arizona->rev) {
> - case 0:
> - info->micd_reva = true;
> - break;
> - default:
> - info->micd_clamp = true;
> - info->hpdet_ip_version = 1;
> - break;
> - }
> - break;
> - case WM5110:
> - case WM8280:
> - switch (arizona->rev) {
> - case 0 ... 2:
> - break;
> - default:
> - info->micd_clamp = true;
> - info->hpdet_ip_version = 2;
> - break;
> - }
> - break;
> - case WM8998:
> - case WM1814:
> - info->micd_clamp = true;
> - info->hpdet_ip_version = 2;
> - break;
> - default:
> - break;
> - }
> -
> - info->edev = devm_extcon_dev_allocate(&pdev->dev, arizona_cable);
> - if (IS_ERR(info->edev)) {
> - dev_err(&pdev->dev, "failed to allocate extcon device\n");
> - return -ENOMEM;
> - }
> -
> - ret = devm_extcon_dev_register(&pdev->dev, info->edev);
> - if (ret < 0) {
> - dev_err(arizona->dev, "extcon_dev_register() failed: %d\n",
> - ret);
> - return ret;
> - }
> -
> - info->input = devm_input_allocate_device(&pdev->dev);
> - if (!info->input) {
> - dev_err(arizona->dev, "Can't allocate input dev\n");
> - ret = -ENOMEM;
> - return ret;
> - }
> -
> - info->input->name = "Headset";
> - info->input->phys = "arizona/extcon";
> -
> - if (!pdata->micd_timeout)
> - pdata->micd_timeout = DEFAULT_MICD_TIMEOUT;
> -
> - if (pdata->num_micd_configs) {
> - info->micd_modes = pdata->micd_configs;
> - info->micd_num_modes = pdata->num_micd_configs;
> - } else {
> - info->micd_modes = micd_default_modes;
> - info->micd_num_modes = ARRAY_SIZE(micd_default_modes);
> - }
> -
> - if (arizona->pdata.gpsw > 0)
> - regmap_update_bits(arizona->regmap, ARIZONA_GP_SWITCH_1,
> - ARIZONA_SW1_MODE_MASK, arizona->pdata.gpsw);
> -
> - if (pdata->micd_pol_gpio > 0) {
> - if (info->micd_modes[0].gpio)
> - mode = GPIOF_OUT_INIT_HIGH;
> - else
> - mode = GPIOF_OUT_INIT_LOW;
> -
> - ret = devm_gpio_request_one(&pdev->dev, pdata->micd_pol_gpio,
> - mode, "MICD polarity");
> - if (ret != 0) {
> - dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
> - pdata->micd_pol_gpio, ret);
> - return ret;
> - }
> -
> - info->micd_pol_gpio = gpio_to_desc(pdata->micd_pol_gpio);
> - } else {
> - if (info->micd_modes[0].gpio)
> - mode = GPIOD_OUT_HIGH;
> - else
> - mode = GPIOD_OUT_LOW;
> -
> - /* We can't use devm here because we need to do the get
> - * against the MFD device, as that is where the of_node
> - * will reside, but if we devm against that the GPIO
> - * will not be freed if the extcon driver is unloaded.
> - */
> - info->micd_pol_gpio = gpiod_get_optional(arizona->dev,
> - "wlf,micd-pol",
> - GPIOD_OUT_LOW);
> - if (IS_ERR(info->micd_pol_gpio)) {
> - ret = PTR_ERR(info->micd_pol_gpio);
> - dev_err(arizona->dev,
> - "Failed to get microphone polarity GPIO: %d\n",
> - ret);
> - return ret;
> - }
> - }
> -
> - if (arizona->pdata.hpdet_id_gpio > 0) {
> - ret = devm_gpio_request_one(&pdev->dev,
> - arizona->pdata.hpdet_id_gpio,
> - GPIOF_OUT_INIT_LOW,
> - "HPDET");
> - if (ret != 0) {
> - dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
> - arizona->pdata.hpdet_id_gpio, ret);
> - goto err_gpio;
> - }
> - }
> -
> - 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);
> -
> - if (arizona->pdata.micd_rate)
> - regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
> - ARIZONA_MICD_RATE_MASK,
> - arizona->pdata.micd_rate
> - << ARIZONA_MICD_RATE_SHIFT);
> -
> - switch (arizona->pdata.micd_dbtime) {
> - case MICD_DBTIME_FOUR_READINGS:
> - regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
> - ARIZONA_MICD_DBTIME_MASK,
> - ARIZONA_MICD_DBTIME);
> - break;
> - case MICD_DBTIME_TWO_READINGS:
> - regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
> - ARIZONA_MICD_DBTIME_MASK, 0);
> - break;
> - default:
> - break;
> - }
> -
> - BUILD_BUG_ON(ARRAY_SIZE(arizona_micd_levels) <
> - ARIZONA_NUM_MICD_BUTTON_LEVELS);
> -
> - if (arizona->pdata.num_micd_ranges) {
> - info->micd_ranges = pdata->micd_ranges;
> - info->num_micd_ranges = pdata->num_micd_ranges;
> - } else {
> - info->micd_ranges = micd_default_ranges;
> - info->num_micd_ranges = ARRAY_SIZE(micd_default_ranges);
> - }
> -
> - if (arizona->pdata.num_micd_ranges > ARIZONA_MAX_MICD_RANGE) {
> - dev_err(arizona->dev, "Too many MICD ranges: %d\n",
> - arizona->pdata.num_micd_ranges);
> - }
> -
> - if (info->num_micd_ranges > 1) {
> - for (i = 1; i < info->num_micd_ranges; i++) {
> - if (info->micd_ranges[i - 1].max >
> - info->micd_ranges[i].max) {
> - dev_err(arizona->dev,
> - "MICD ranges must be sorted\n");
> - ret = -EINVAL;
> - goto err_gpio;
> - }
> - }
> - }
> -
> - /* Disable all buttons by default */
> - regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
> - ARIZONA_MICD_LVL_SEL_MASK, 0x81);
> -
> - /* Set up all the buttons the user specified */
> - for (i = 0; i < info->num_micd_ranges; i++) {
> - for (j = 0; j < ARIZONA_NUM_MICD_BUTTON_LEVELS; j++)
> - if (arizona_micd_levels[j] >= info->micd_ranges[i].max)
> - break;
> -
> - if (j == ARIZONA_NUM_MICD_BUTTON_LEVELS) {
> - dev_err(arizona->dev, "Unsupported MICD level %d\n",
> - info->micd_ranges[i].max);
> - ret = -EINVAL;
> - goto err_gpio;
> - }
> -
> - dev_dbg(arizona->dev, "%d ohms for MICD threshold %d\n",
> - arizona_micd_levels[j], i);
> -
> - arizona_micd_set_level(arizona, i, j);
> - input_set_capability(info->input, EV_KEY,
> - info->micd_ranges[i].key);
> -
> - /* Enable reporting of that range */
> - regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
> - 1 << i, 1 << i);
> - }
> -
> - /* Set all the remaining keys to a maximum */
> - for (; i < ARIZONA_MAX_MICD_RANGE; i++)
> - arizona_micd_set_level(arizona, i, 0x3f);
> -
> - /*
> - * If we have a clamp use it, activating in conjunction with
> - * GPIO5 if that is connected for jack detect operation.
> - */
> - if (info->micd_clamp) {
> - if (arizona->pdata.jd_gpio5) {
> - /* Put the GPIO into input mode with optional pull */
> - val = 0xc101;
> - if (arizona->pdata.jd_gpio5_nopull)
> - val &= ~ARIZONA_GPN_PU;
> -
> - regmap_write(arizona->regmap, ARIZONA_GPIO5_CTRL,
> - val);
> -
> - if (arizona->pdata.jd_invert)
> - clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH_GP5H;
> - else
> - clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL_GP5H;
> - } else {
> - if (arizona->pdata.jd_invert)
> - clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH;
> - else
> - clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL;
> - }
> -
> - regmap_update_bits(arizona->regmap,
> - ARIZONA_MICD_CLAMP_CONTROL,
> - ARIZONA_MICD_CLAMP_MODE_MASK, clamp_mode);
> -
> - regmap_update_bits(arizona->regmap,
> - ARIZONA_JACK_DETECT_DEBOUNCE,
> - ARIZONA_MICD_CLAMP_DB,
> - ARIZONA_MICD_CLAMP_DB);
> - }
> -
> - arizona_extcon_set_mode(info, 0);
> -
> - pm_runtime_enable(&pdev->dev);
> - pm_runtime_idle(&pdev->dev);
> - pm_runtime_get_sync(&pdev->dev);
> -
> - if (info->micd_clamp) {
> - jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE;
> - jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL;
> - } else {
> - jack_irq_rise = ARIZONA_IRQ_JD_RISE;
> - jack_irq_fall = ARIZONA_IRQ_JD_FALL;
> - }
> -
> - ret = arizona_request_irq(arizona, jack_irq_rise,
> - "JACKDET rise", arizona_jackdet, info);
> - if (ret != 0) {
> - dev_err(&pdev->dev, "Failed to get JACKDET rise IRQ: %d\n",
> - ret);
> - goto err_pm;
> - }
> -
> - ret = arizona_set_irq_wake(arizona, jack_irq_rise, 1);
> - if (ret != 0) {
> - dev_err(&pdev->dev, "Failed to set JD rise IRQ wake: %d\n",
> - ret);
> - goto err_rise;
> - }
> -
> - ret = arizona_request_irq(arizona, jack_irq_fall,
> - "JACKDET fall", arizona_jackdet, info);
> - if (ret != 0) {
> - dev_err(&pdev->dev, "Failed to get JD fall IRQ: %d\n", ret);
> - goto err_rise_wake;
> - }
> -
> - ret = arizona_set_irq_wake(arizona, jack_irq_fall, 1);
> - if (ret != 0) {
> - dev_err(&pdev->dev, "Failed to set JD fall IRQ wake: %d\n",
> - ret);
> - goto err_fall;
> - }
> -
> - ret = arizona_request_irq(arizona, ARIZONA_IRQ_MICDET,
> - "MICDET", arizona_micdet, info);
> - if (ret != 0) {
> - dev_err(&pdev->dev, "Failed to get MICDET IRQ: %d\n", ret);
> - goto err_fall_wake;
> - }
> -
> - ret = arizona_request_irq(arizona, ARIZONA_IRQ_HPDET,
> - "HPDET", arizona_hpdet_irq, info);
> - if (ret != 0) {
> - dev_err(&pdev->dev, "Failed to get HPDET IRQ: %d\n", ret);
> - goto err_micdet;
> - }
> -
> - arizona_clk32k_enable(arizona);
> - regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_DEBOUNCE,
> - ARIZONA_JD1_DB, ARIZONA_JD1_DB);
> - regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
> - ARIZONA_JD1_ENA, ARIZONA_JD1_ENA);
> -
> - ret = regulator_allow_bypass(info->micvdd, true);
> - if (ret != 0)
> - dev_warn(arizona->dev, "Failed to set MICVDD to bypass: %d\n",
> - ret);
> -
> - ret = input_register_device(info->input);
> - if (ret) {
> - dev_err(&pdev->dev, "Can't register input device: %d\n", ret);
> - goto err_hpdet;
> - }
> -
> - pm_runtime_put(&pdev->dev);
> -
> - return 0;
> -
> -err_hpdet:
> - arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info);
> -err_micdet:
> - arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
> -err_fall_wake:
> - arizona_set_irq_wake(arizona, jack_irq_fall, 0);
> -err_fall:
> - arizona_free_irq(arizona, jack_irq_fall, info);
> -err_rise_wake:
> - arizona_set_irq_wake(arizona, jack_irq_rise, 0);
> -err_rise:
> - arizona_free_irq(arizona, jack_irq_rise, info);
> -err_pm:
> - pm_runtime_put(&pdev->dev);
> - pm_runtime_disable(&pdev->dev);
> -err_gpio:
> - gpiod_put(info->micd_pol_gpio);
> - return ret;
> -}
> -
> -static int arizona_extcon_remove(struct platform_device *pdev)
> -{
> - struct arizona_extcon_info *info = platform_get_drvdata(pdev);
> - struct arizona *arizona = info->arizona;
> - int jack_irq_rise, jack_irq_fall;
> - bool change;
> - int ret;
> -
> - ret = regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
> - ARIZONA_MICD_ENA, 0,
> - &change);
> - if (ret < 0) {
> - dev_err(&pdev->dev, "Failed to disable micd on remove: %d\n",
> - ret);
> - } else if (change) {
> - regulator_disable(info->micvdd);
> - pm_runtime_put(info->dev);
> - }
> -
> - gpiod_put(info->micd_pol_gpio);
> -
> - pm_runtime_disable(&pdev->dev);
> -
> - regmap_update_bits(arizona->regmap,
> - ARIZONA_MICD_CLAMP_CONTROL,
> - ARIZONA_MICD_CLAMP_MODE_MASK, 0);
> -
> - if (info->micd_clamp) {
> - jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE;
> - jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL;
> - } else {
> - jack_irq_rise = ARIZONA_IRQ_JD_RISE;
> - jack_irq_fall = ARIZONA_IRQ_JD_FALL;
> - }
> -
> - arizona_set_irq_wake(arizona, jack_irq_rise, 0);
> - arizona_set_irq_wake(arizona, jack_irq_fall, 0);
> - arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info);
> - arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
> - arizona_free_irq(arizona, jack_irq_rise, info);
> - arizona_free_irq(arizona, jack_irq_fall, info);
> - cancel_delayed_work_sync(&info->hpdet_work);
> - regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
> - ARIZONA_JD1_ENA, 0);
> - arizona_clk32k_disable(arizona);
> -
> - return 0;
> -}
> -
> -static struct platform_driver arizona_extcon_driver = {
> - .driver = {
> - .name = "arizona-extcon",
> - },
> - .probe = arizona_extcon_probe,
> - .remove = arizona_extcon_remove,
> -};
> -
> -module_platform_driver(arizona_extcon_driver);
> -
> -MODULE_DESCRIPTION("Arizona Extcon driver");
> -MODULE_AUTHOR("Mark Brown <broonie@...nsource.wolfsonmicro.com>");
> -MODULE_LICENSE("GPL");
> -MODULE_ALIAS("platform:extcon-arizona");
> --
> 2.28.0
>
--
With Best Regards,
Andy Shevchenko
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