linux/drivers/mfd/arizona-spi.c
Linus Torvalds 8350e8331b - New Drivers
- Add support for Maxim MAX77714 PMIC
 
  - Remove Drivers
    - Remove support for ST-Ericsson AB8500 DebugFS
 
  - New Device Support
    - Add support for Silergy SY7636A to Simple MFD I2C
    - Add support for MediaTek MT6366 PMIC to MT6358 IRQ
    - Add support for Charger to Intel PMIC CRC
    - Add support for Raptor Lake to Intel LPSS PCI
 
  - New Functionality
    - Add support for Reboot to Rockchip RK808
 
  - Fix-ups
    - Device Tree changes (inc. YAML conversion); silergy,sy7636a, maxim,max77843,
                                   google,cros-ec, maxim,max14577, maxim,max77802,
 				  maxim,max77714, qcom,tcsr, qcom,spmi-pmic,
 				  stericsson,ab8500, stericsson,db8500-prcmu,
 				  samsung,exynos5433-lpass, mt6397, syscon, brcm,cru
    - Visible to menuconfig; simple-mfd-i2c
    - Clean-up or clarify code; max77686, intel_soc_pmic_crc
    - Improve error handling; mc13xxx-core, stmfx, asic3
    - Pass device information to child devices; iqs62x, intel-lpss-acpi
    - Individually identify IRQ domains; intel_soc_pmic_core
    - Remove superfluous code; dbx500-prcmu, exynos-lpass
    - Staticify and constify; arizona-i2c
    - Mark sometimes used data as __maybe_unused; atmel-flexcom
    - Account for different ACPI tables on AOSP/Windows platforms; arizona-spi
    - Use provided (platform) APIs; ab8500-core
    - Trivial (whitespace, spelling); rohm-bd9576
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Merge tag 'mfd-next-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "New Drivers:
   - Add support for Maxim MAX77714 PMIC

  Removed Drivers:
   - Remove support for ST-Ericsson AB8500 DebugFS

  New Device Support:
   - Add support for Silergy SY7636A to Simple MFD I2C
   - Add support for MediaTek MT6366 PMIC to MT6358 IRQ
   - Add support for Charger to Intel PMIC CRC
   - Add support for Raptor Lake to Intel LPSS PCI

  New Functionality:
   - Add support for Reboot to Rockchip RK808

  Fix-ups:
   - Device Tree changes (includcing YAML conversion) for
     silergy,sy7636a, maxim,max77843, google,cros-ec, maxim,max14577,
     maxim,max77802, maxim,max77714, qcom,tcsr, qcom,spmi-pmic,
     stericsson,ab8500, stericsson,db8500-prcmu,
     samsung,exynos5433-lpass, mt6397, syscon, brcm,cru
   - Visible to menuconfig; simple-mfd-i2c
   - Clean-up or clarify code; max77686, intel_soc_pmic_crc
   - Improve error handling; mc13xxx-core, stmfx, asic3
   - Pass device information to child devices; iqs62x, intel-lpss-acpi
   - Individually identify IRQ domains; intel_soc_pmic_core
   - Remove superfluous code; dbx500-prcmu, exynos-lpass
   - Staticify and constify; arizona-i2c
   - Mark sometimes used data as __maybe_unused; atmel-flexcom
   - Account for different ACPI tables on AOSP/Windows platforms; arizona-spi
   - Use provided (platform) APIs; ab8500-core
   - Trivial (whitespace, spelling); rohm-bd9576"

* tag 'mfd-next-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (50 commits)
  dt-bindings: mfd: syscon: Add microchip,lan966x-cpu-syscon compatible
  mfd: bd9576: fix typos in comments
  mfd: Use platform_get_irq() to get the interrupt
  mfd: db8500-prcmu: Remove unused inline function
  mfd: arizona-spi: Add Android board ACPI table handling
  mfd: arizona-spi: Split Windows ACPI init code into its own function
  mfd: asic3: Add missing iounmap() on error asic3_mfd_probe
  MAINTAINERS: Rectify entry for ROHM MULTIFUNCTION BD9571MWV-M PMIC DEVICE DRIVERS
  mfd: intel-lpss: Provide an SSP type to the driver
  dt-bindings: mfd: brcm,cru: Rename pinctrl node
  dt-bindings: Add compatibles for undocumented trivial syscons
  mfd: atmel-flexcom: Fix compilation warning
  dt-bindings: mfd: Add compatible for the MediaTek MT6366 PMIC
  dt-bindings: mfd: samsung,exynos5433-lpass: Convert to dtschema
  mfd: exynos-lpass: Drop unneeded syscon.h include
  mfd: intel-lpss: Add Intel Raptor Lake PCH-S PCI IDs
  mfd: ab8500: Drop debugfs module
  mfd: sta2x11: Use GFP_KERNEL instead of GFP_ATOMIC
  mfd: ab8500: Rewrite bindings in YAML
  mfd: qcom-spmi-pmic: Add pm8953 compatible
  ...
2022-03-25 13:56:18 -07:00

300 lines
8.3 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* arizona-spi.c -- Arizona SPI bus interface
*
* Copyright 2012 Wolfson Microelectronics plc
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*/
#include <linux/acpi.h>
#include <linux/err.h>
#include <linux/gpio/consumer.h>
#include <linux/gpio/machine.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <linux/spi/spi.h>
#include <linux/of.h>
#include <uapi/linux/input-event-codes.h>
#include <linux/mfd/arizona/core.h>
#include "arizona.h"
#ifdef CONFIG_ACPI
static const struct acpi_gpio_params reset_gpios = { 1, 0, false };
static const struct acpi_gpio_params ldoena_gpios = { 2, 0, false };
static const struct acpi_gpio_mapping arizona_acpi_gpios[] = {
{ "reset-gpios", &reset_gpios, 1, },
{ "wlf,ldoena-gpios", &ldoena_gpios, 1 },
{ }
};
/*
* The ACPI resources for the device only describe external GPIO-s. They do
* not provide mappings for the GPIO-s coming from the Arizona codec itself.
*/
static const struct gpiod_lookup arizona_soc_gpios[] = {
{ "arizona", 2, "wlf,spkvdd-ena", 0, GPIO_ACTIVE_HIGH },
{ "arizona", 4, "wlf,micd-pol", 0, GPIO_ACTIVE_LOW },
};
static void arizona_spi_acpi_remove_lookup(void *lookup)
{
gpiod_remove_lookup_table(lookup);
}
/* For ACPI tables from boards which ship with Windows as factory OS */
static int arizona_spi_acpi_windows_probe(struct arizona *arizona)
{
struct gpiod_lookup_table *lookup;
acpi_status status;
int ret;
/* Add mappings for the 2 ACPI declared GPIOs used for reset and ldo-ena */
devm_acpi_dev_add_driver_gpios(arizona->dev, arizona_acpi_gpios);
/* Add lookups for the SoCs own GPIOs used for micdet-polarity and spkVDD-enable */
lookup = devm_kzalloc(arizona->dev,
struct_size(lookup, table, ARRAY_SIZE(arizona_soc_gpios) + 1),
GFP_KERNEL);
if (!lookup)
return -ENOMEM;
lookup->dev_id = dev_name(arizona->dev);
memcpy(lookup->table, arizona_soc_gpios, sizeof(arizona_soc_gpios));
gpiod_add_lookup_table(lookup);
ret = devm_add_action_or_reset(arizona->dev, arizona_spi_acpi_remove_lookup, lookup);
if (ret)
return ret;
/* Enable 32KHz clock from SoC to codec for jack-detect */
status = acpi_evaluate_object(ACPI_HANDLE(arizona->dev), "CLKE", NULL, NULL);
if (ACPI_FAILURE(status))
dev_warn(arizona->dev, "Failed to enable 32KHz clk ACPI error %d\n", status);
return 0;
}
/* For ACPI tables from boards which ship with Android as factory OS */
static int arizona_spi_acpi_android_probe(struct arizona *arizona)
{
int ret;
/*
* Get the reset GPIO, treating -ENOENT as -EPROBE_DEFER to wait for
* the x86-android-tablets module to register the board specific GPIO
* lookup table.
*/
arizona->pdata.reset = devm_gpiod_get(arizona->dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(arizona->pdata.reset)) {
ret = PTR_ERR(arizona->pdata.reset);
if (ret == -ENOENT) {
dev_info_once(arizona->dev,
"Deferring probe till GPIO lookup is registered\n");
ret = -EPROBE_DEFER;
}
return dev_err_probe(arizona->dev, ret, "getting reset GPIO\n");
}
return 0;
}
/*
* The AOSP 3.5 mm Headset: Accessory Specification gives the following values:
* Function A Play/Pause: 0 ohm
* Function D Voice assistant: 135 ohm
* Function B Volume Up 240 ohm
* Function C Volume Down 470 ohm
* Minimum Mic DC resistance 1000 ohm
* Minimum Ear speaker impedance 16 ohm
* Note the first max value below must be less then the min. speaker impedance,
* to allow CTIA/OMTP detection to work. The other max values are the closest
* value from extcon-arizona.c:arizona_micd_levels halfway 2 button resistances.
*/
static const struct arizona_micd_range arizona_micd_aosp_ranges[] = {
{ .max = 11, .key = KEY_PLAYPAUSE },
{ .max = 186, .key = KEY_VOICECOMMAND },
{ .max = 348, .key = KEY_VOLUMEUP },
{ .max = 752, .key = KEY_VOLUMEDOWN },
};
static int arizona_spi_acpi_probe(struct arizona *arizona)
{
struct acpi_device *adev = ACPI_COMPANION(arizona->dev);
int ret;
if (acpi_dev_hid_uid_match(adev, "10WM5102", NULL))
ret = arizona_spi_acpi_android_probe(arizona);
else
ret = arizona_spi_acpi_windows_probe(arizona);
if (ret)
return ret;
/*
* Some DSDTs wrongly declare the IRQ trigger-type as IRQF_TRIGGER_FALLING
* The IRQ line will stay low when a new IRQ event happens between reading
* the IRQ status flags and acknowledging them. When the IRQ line stays
* low like this the IRQ will never trigger again when its type is set
* to IRQF_TRIGGER_FALLING. Correct the IRQ trigger-type to fix this.
*
* Note theoretically it is possible that some boards are not capable
* of handling active low level interrupts. In that case setting the
* flag to IRQF_TRIGGER_FALLING would not be a bug (and we would need
* to work around this) but so far all known usages of IRQF_TRIGGER_FALLING
* are a bug in the board's DSDT.
*/
arizona->pdata.irq_flags = IRQF_TRIGGER_LOW;
/* Wait 200 ms after jack insertion */
arizona->pdata.micd_detect_debounce = 200;
/* Use standard AOSP values for headset-button mappings */
arizona->pdata.micd_ranges = arizona_micd_aosp_ranges;
arizona->pdata.num_micd_ranges = ARRAY_SIZE(arizona_micd_aosp_ranges);
return 0;
}
static const struct acpi_device_id arizona_acpi_match[] = {
{
.id = "WM510204",
.driver_data = WM5102,
},
{
.id = "WM510205",
.driver_data = WM5102,
},
{
.id = "10WM5102",
.driver_data = WM5102,
},
{ }
};
MODULE_DEVICE_TABLE(acpi, arizona_acpi_match);
#else
static int arizona_spi_acpi_probe(struct arizona *arizona)
{
return -ENODEV;
}
#endif
static int arizona_spi_probe(struct spi_device *spi)
{
const struct spi_device_id *id = spi_get_device_id(spi);
const void *match_data;
struct arizona *arizona;
const struct regmap_config *regmap_config = NULL;
unsigned long type = 0;
int ret;
match_data = device_get_match_data(&spi->dev);
if (match_data)
type = (unsigned long)match_data;
else if (id)
type = id->driver_data;
switch (type) {
case WM5102:
if (IS_ENABLED(CONFIG_MFD_WM5102))
regmap_config = &wm5102_spi_regmap;
break;
case WM5110:
case WM8280:
if (IS_ENABLED(CONFIG_MFD_WM5110))
regmap_config = &wm5110_spi_regmap;
break;
case WM1831:
case CS47L24:
if (IS_ENABLED(CONFIG_MFD_CS47L24))
regmap_config = &cs47l24_spi_regmap;
break;
default:
dev_err(&spi->dev, "Unknown device type %ld\n", type);
return -EINVAL;
}
if (!regmap_config) {
dev_err(&spi->dev,
"No kernel support for device type %ld\n", type);
return -EINVAL;
}
arizona = devm_kzalloc(&spi->dev, sizeof(*arizona), GFP_KERNEL);
if (arizona == NULL)
return -ENOMEM;
arizona->regmap = devm_regmap_init_spi(spi, regmap_config);
if (IS_ERR(arizona->regmap)) {
ret = PTR_ERR(arizona->regmap);
dev_err(&spi->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
arizona->type = type;
arizona->dev = &spi->dev;
arizona->irq = spi->irq;
if (has_acpi_companion(&spi->dev)) {
ret = arizona_spi_acpi_probe(arizona);
if (ret)
return ret;
}
return arizona_dev_init(arizona);
}
static void arizona_spi_remove(struct spi_device *spi)
{
struct arizona *arizona = spi_get_drvdata(spi);
arizona_dev_exit(arizona);
}
static const struct spi_device_id arizona_spi_ids[] = {
{ "wm5102", WM5102 },
{ "wm5110", WM5110 },
{ "wm8280", WM8280 },
{ "wm1831", WM1831 },
{ "cs47l24", CS47L24 },
{ },
};
MODULE_DEVICE_TABLE(spi, arizona_spi_ids);
#ifdef CONFIG_OF
static const struct of_device_id arizona_spi_of_match[] = {
{ .compatible = "wlf,wm5102", .data = (void *)WM5102 },
{ .compatible = "wlf,wm5110", .data = (void *)WM5110 },
{ .compatible = "wlf,wm8280", .data = (void *)WM8280 },
{ .compatible = "wlf,wm1831", .data = (void *)WM1831 },
{ .compatible = "cirrus,cs47l24", .data = (void *)CS47L24 },
{},
};
#endif
static struct spi_driver arizona_spi_driver = {
.driver = {
.name = "arizona",
.pm = &arizona_pm_ops,
.of_match_table = of_match_ptr(arizona_spi_of_match),
.acpi_match_table = ACPI_PTR(arizona_acpi_match),
},
.probe = arizona_spi_probe,
.remove = arizona_spi_remove,
.id_table = arizona_spi_ids,
};
module_spi_driver(arizona_spi_driver);
MODULE_SOFTDEP("pre: arizona_ldo1");
MODULE_DESCRIPTION("Arizona SPI bus interface");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");