mfd: Add device tree bindings for Arizona class devices
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>hifive-unleashed-5.1
Mark Brown
parent
67c9929691
commit
d781009ca6
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@ -0,0 +1,62 @@
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Wolfson Arizona class audio SoCs
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These devices are audio SoCs with extensive digital capabilites and a range
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of analogue I/O.
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Required properties:
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- compatible : one of the following chip-specific strings:
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"wlf,wm5102"
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"wlf,wm5110"
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- reg : I2C slave address when connected using I2C, chip select number when
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using SPI.
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- interrupts : The interrupt line the /IRQ signal for the device is
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connected to.
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- interrupt-controller : Arizona class devices contain interrupt controllers
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and may provide interrupt services to other devices.
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- interrupt-parent : The parent interrupt controller.
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- #interrupt-cells: the number of cells to describe an IRQ, this should be 2.
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The first cell is the IRQ number.
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The second cell is the flags, encoded as the trigger masks from
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Documentation/devicetree/bindings/interrupts.txt
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- gpio-controller : Indicates this device is a GPIO controller.
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- #gpio-cells : Must be 2. The first cell is the pin number and the
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second cell is used to specify optional parameters (currently unused).
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- AVDD1-supply, DBVDD1-supply, DBVDD2-supply, DBVDD3-supply, CPVDD-supply,
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SPKVDDL-supply, SPKVDDR-supply : power supplies for the device, as covered
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in Documentation/devicetree/bindings/regulator/regulator.txt
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Optional properties:
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- wlf,reset : GPIO specifier for the GPIO controlling /RESET
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- wlf,ldoena : GPIO specifier for the GPIO controlling LDOENA
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- wlf,gpio-defaults : A list of GPIO configuration register values. If
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absent, no configuration of these registers is performed. If any
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entry has a value that is out of range for a 16 bit register then
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the chip default will be used. If present exactly five values must
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be specified.
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Example:
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codec: wm5102@1a {
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compatible = "wlf,wm5102";
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reg = <0x1a>;
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interrupts = <347>;
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#interrupt-cells = <2>;
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interrupt-parent = <&gic>;
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gpio-controller;
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#gpio-cells = <2>;
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wlf,gpio-defaults = <
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0x00000000, /* AIF1TXLRCLK */
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0xffffffff,
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0xffffffff,
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0xffffffff,
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0xffffffff,
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>;
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};
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@ -16,6 +16,9 @@
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#include <linux/interrupt.h>
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#include <linux/mfd/core.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/of_gpio.h>
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#include <linux/pm_runtime.h>
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#include <linux/regmap.h>
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#include <linux/regulator/consumer.h>
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@ -462,6 +465,70 @@ const struct dev_pm_ops arizona_pm_ops = {
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};
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EXPORT_SYMBOL_GPL(arizona_pm_ops);
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#ifdef CONFIG_OF
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int arizona_of_get_type(struct device *dev)
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{
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const struct of_device_id *id = of_match_device(arizona_of_match, dev);
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if (id)
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return (int)id->data;
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else
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return 0;
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}
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EXPORT_SYMBOL_GPL(arizona_of_get_type);
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static int arizona_of_get_core_pdata(struct arizona *arizona)
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{
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int ret, i;
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arizona->pdata.reset = of_get_named_gpio(arizona->dev->of_node,
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"wlf,reset", 0);
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if (arizona->pdata.reset < 0)
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arizona->pdata.reset = 0;
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arizona->pdata.ldoena = of_get_named_gpio(arizona->dev->of_node,
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"wlf,ldoena", 0);
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if (arizona->pdata.ldoena < 0)
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arizona->pdata.ldoena = 0;
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ret = of_property_read_u32_array(arizona->dev->of_node,
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"wlf,gpio-defaults",
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arizona->pdata.gpio_defaults,
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ARRAY_SIZE(arizona->pdata.gpio_defaults));
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if (ret >= 0) {
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/*
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* All values are literal except out of range values
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* which are chip default, translate into platform
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* data which uses 0 as chip default and out of range
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* as zero.
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*/
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for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
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if (arizona->pdata.gpio_defaults[i] > 0xffff)
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arizona->pdata.gpio_defaults[i] = 0;
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if (arizona->pdata.gpio_defaults[i] == 0)
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arizona->pdata.gpio_defaults[i] = 0x10000;
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}
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} else {
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dev_err(arizona->dev, "Failed to parse GPIO defaults: %d\n",
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ret);
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}
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return 0;
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}
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const struct of_device_id arizona_of_match[] = {
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{ .compatible = "wlf,wm5102", .data = (void *)WM5102 },
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{ .compatible = "wlf,wm5110", .data = (void *)WM5110 },
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{},
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};
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EXPORT_SYMBOL_GPL(arizona_of_match);
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#else
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static inline int arizona_of_get_core_pdata(struct arizona *arizona)
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{
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return 0;
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}
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#endif
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static struct mfd_cell early_devs[] = {
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{ .name = "arizona-ldo1" },
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};
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@ -495,6 +562,8 @@ int arizona_dev_init(struct arizona *arizona)
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dev_set_drvdata(arizona->dev, arizona);
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mutex_init(&arizona->clk_lock);
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arizona_of_get_core_pdata(arizona);
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if (dev_get_platdata(arizona->dev))
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memcpy(&arizona->pdata, dev_get_platdata(arizona->dev),
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sizeof(arizona->pdata));
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@ -27,9 +27,14 @@ static int arizona_i2c_probe(struct i2c_client *i2c,
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{
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struct arizona *arizona;
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const struct regmap_config *regmap_config;
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int ret;
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int ret, type;
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switch (id->driver_data) {
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if (i2c->dev.of_node)
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type = arizona_of_get_type(&i2c->dev);
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else
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type = id->driver_data;
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switch (type) {
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#ifdef CONFIG_MFD_WM5102
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case WM5102:
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regmap_config = &wm5102_i2c_regmap;
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@ -84,6 +89,7 @@ static struct i2c_driver arizona_i2c_driver = {
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.name = "arizona",
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.owner = THIS_MODULE,
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.pm = &arizona_pm_ops,
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.of_match_table = of_match_ptr(arizona_of_match),
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},
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.probe = arizona_i2c_probe,
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.remove = arizona_i2c_remove,
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@ -27,9 +27,14 @@ static int arizona_spi_probe(struct spi_device *spi)
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const struct spi_device_id *id = spi_get_device_id(spi);
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struct arizona *arizona;
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const struct regmap_config *regmap_config;
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int ret;
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int ret, type;
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switch (id->driver_data) {
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if (spi->dev.of_node)
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type = arizona_of_get_type(&spi->dev);
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else
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type = id->driver_data;
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switch (type) {
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#ifdef CONFIG_MFD_WM5102
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case WM5102:
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regmap_config = &wm5102_spi_regmap;
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@ -84,6 +89,7 @@ static struct spi_driver arizona_spi_driver = {
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.name = "arizona",
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.owner = THIS_MODULE,
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.pm = &arizona_pm_ops,
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.of_match_table = of_match_ptr(arizona_of_match),
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},
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.probe = arizona_spi_probe,
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.remove = arizona_spi_remove,
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@ -13,6 +13,7 @@
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#ifndef _WM5102_H
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#define _WM5102_H
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#include <linux/of.h>
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#include <linux/regmap.h>
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#include <linux/pm.h>
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@ -26,6 +27,8 @@ extern const struct regmap_config wm5110_spi_regmap;
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extern const struct dev_pm_ops arizona_pm_ops;
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extern const struct of_device_id arizona_of_match[];
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extern const struct regmap_irq_chip wm5102_aod;
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extern const struct regmap_irq_chip wm5102_irq;
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@ -37,4 +40,13 @@ int arizona_dev_exit(struct arizona *arizona);
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int arizona_irq_init(struct arizona *arizona);
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int arizona_irq_exit(struct arizona *arizona);
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#ifdef CONFIG_OF
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int arizona_of_get_type(struct device *dev);
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#else
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static inline int arizona_of_get_type(struct device *dev)
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{
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return 0;
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}
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#endif
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#endif
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