Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762266Ab3DBUvl (ORCPT ); Tue, 2 Apr 2013 16:51:41 -0400 Received: from opensource.wolfsonmicro.com ([80.75.67.52]:51073 "EHLO opensource.wolfsonmicro.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760449Ab3DBUvk (ORCPT ); Tue, 2 Apr 2013 16:51:40 -0400 From: Mark Brown To: Samuel Ortiz Cc: linux-kernel@vger.kernel.org, patches@opensource.wolfsonmicro.com, Grant Likely , devicetree-discuss@lists.ozlabs.org, Mark Brown Subject: [PATCH] mfd: Add device tree bindings for Arizona class devices Date: Tue, 2 Apr 2013 21:51:18 +0100 Message-Id: <1364935878-11500-1-git-send-email-broonie@opensource.wolfsonmicro.com> X-Mailer: git-send-email 1.7.10.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7491 Lines: 243 Signed-off-by: Mark Brown --- Documentation/devicetree/bindings/mfd/arizona.txt | 62 +++++++++++++++++++++ drivers/mfd/arizona-core.c | 53 ++++++++++++++++++ drivers/mfd/arizona-i2c.c | 10 +++- drivers/mfd/arizona-spi.c | 10 +++- drivers/mfd/arizona.h | 12 ++++ 5 files changed, 143 insertions(+), 4 deletions(-) create mode 100644 Documentation/devicetree/bindings/mfd/arizona.txt diff --git a/Documentation/devicetree/bindings/mfd/arizona.txt b/Documentation/devicetree/bindings/mfd/arizona.txt new file mode 100644 index 0000000..7b61d05 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/arizona.txt @@ -0,0 +1,62 @@ +Wolfson Arizona class audio SoCs + +These devices are audio SoCs with extensive digital capabilites and a range +of analogue I/O. + +Required properties: + + - compatible : one of the following chip-specific strings: + "wlf,wm5102" + "wlf,wm5110" + - reg : I2C slave address when connected using I2C, chip select number when + using SPI. + + - interrupts : The interrupt line the /IRQ signal for the device is + connected to. + - interrupt-controller : Arizona class devices contain interrupt controllers + and may provide interrupt services to other devices. + - interrupt-parent : The parent interrupt controller. + - #interrupt-cells: the number of cells to describe an IRQ, this should be 2. + The first cell is the IRQ number. + The second cell is the flags, encoded as the trigger masks from + Documentation/devicetree/bindings/interrupts.txt + + - gpio-controller : Indicates this device is a GPIO controller. + - #gpio-cells : Must be 2. The first cell is the pin number and the + second cell is used to specify optional parameters (currently unused). + + - AVDD1-supply, DBVDD1-supply, DBVDD2-supply, DBVDD3-supply, CPVDD-supply, + SPKVDDL-supply, SPKVDDR-supply : power supplies for the device, as covered + in Documentation/devicetree/bindings/regulator/regulator.txt + +Optional properties: + + - reset : GPIO specifier for the GPIO controlling /RESET + - ldoena : GPIO specifier for the GPIO controlling LDOENA + + - gpio-defaults : A list of GPIO configuration register values. If + absent, no configuration of these registers is performed. If any + entry has a value that is out of range for a 16 bit register then + the chip default will be used. If present exactly five values must + be specified. + +Example: + +codec: wm5102@1a { + compatible = "wlf,wm5102"; + reg = <0x1a>; + interrupts = <347>; + #interrupt-cells = <2>; + interrupt-parent = <&gic>; + + gpio-controller; + #gpio-cells = <2>; + + gpio-defaults = < + 0x00000000, /* AIF1TXLRCLK */ + 0xffffffff, + 0xffffffff, + 0xffffffff, + 0xffffffff, + >; +}; diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c index 7201a83..3def03f 100644 --- a/drivers/mfd/arizona-core.c +++ b/drivers/mfd/arizona-core.c @@ -428,6 +428,59 @@ const struct dev_pm_ops arizona_pm_ops = { }; EXPORT_SYMBOL_GPL(arizona_pm_ops); +#ifdef CONFIG_OF +int arizona_of_get_type(struct device *dev) +{ + return of_match_device(arizona_of_match, dev); +} + +int arizona_of_get_core_pdata(struct arizona *arizona) +{ + int ret, i; + + arizona->pdata.reset = of_get_named_gpio(arizona->dev.of_node, + "reset", 0); + if (arizona->pdata.reset < 0) + arizona->pdata.reset = 0; + + arizona->pdata.ldoena = of_get_named_gpio(arizona->dev.of_node, + "ldoena", 0); + if (arizona->pdata.ldoena < 0) + arizona->pdata.ldoena = 0; + + ret = of_property_read_u32_array(arizona->dev.of_node, "gpio-defaults", + arizona->pdata.gpio_defaults, + ARRAY_SIZE(arizona->pdata.gpio_defaults)); + if (ret >= 0) { + /* + * All values are literal except out of range values + * which are chip default, translate into platform + * data which uses 0 as chip default and out of range + * as zero. + */ + for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) { + if (pdata->gpio_cfg[i] == 0) { + pdata->gpio_cfg[i] = 0x10000; + } else if (pdata->gpio_defaults[i] > 0xffff) { + pdata->gpio_cfg[i] = 0; + } + } + } else { + dev_err(arizona->dev, "Failed to parse GPIO defaults: %d\n", + ret); + } + + return 0; +} + +const struct of_device_id arizona_of_match[] = { + { .compatible = "wlf,wm5102", .data = WM5102 }, + { .compatible = "wlf,wm5110", .data = WM5110 }, + {}, +}; +EXPORT_SYMBOL_GPL(arizona_of_match); +#endif + static struct mfd_cell early_devs[] = { { .name = "arizona-ldo1" }, }; diff --git a/drivers/mfd/arizona-i2c.c b/drivers/mfd/arizona-i2c.c index 44a1bb9..deb267e 100644 --- a/drivers/mfd/arizona-i2c.c +++ b/drivers/mfd/arizona-i2c.c @@ -27,9 +27,14 @@ static int arizona_i2c_probe(struct i2c_client *i2c, { struct arizona *arizona; const struct regmap_config *regmap_config; - int ret; + int ret, type; - switch (id->driver_data) { + if (i2c->dev.of_node) + type = arizona_of_get_type(&i2c->dev); + else + type = id->driver_data; + + switch (type) { #ifdef CONFIG_MFD_WM5102 case WM5102: regmap_config = &wm5102_i2c_regmap; @@ -84,6 +89,7 @@ static struct i2c_driver arizona_i2c_driver = { .name = "arizona", .owner = THIS_MODULE, .pm = &arizona_pm_ops, + .of_match_table = of_match_ptr(arizona_of_match), }, .probe = arizona_i2c_probe, .remove = arizona_i2c_remove, diff --git a/drivers/mfd/arizona-spi.c b/drivers/mfd/arizona-spi.c index 1b9fdd6..06d93ba 100644 --- a/drivers/mfd/arizona-spi.c +++ b/drivers/mfd/arizona-spi.c @@ -27,9 +27,14 @@ static int arizona_spi_probe(struct spi_device *spi) const struct spi_device_id *id = spi_get_device_id(spi); struct arizona *arizona; const struct regmap_config *regmap_config; - int ret; + int ret, type; - switch (id->driver_data) { + if (spi->dev.of_node) + type = arizona_of_get_type(&spi->dev); + else + type = id->driver_data; + + switch (type) { #ifdef CONFIG_MFD_WM5102 case WM5102: regmap_config = &wm5102_spi_regmap; @@ -84,6 +89,7 @@ static struct spi_driver arizona_spi_driver = { .name = "arizona", .owner = THIS_MODULE, .pm = &arizona_pm_ops, + .of_match_table = of_match_ptr(arizona_of_match), }, .probe = arizona_spi_probe, .remove = arizona_spi_remove, diff --git a/drivers/mfd/arizona.h b/drivers/mfd/arizona.h index 9798ae5..8bd31bb 100644 --- a/drivers/mfd/arizona.h +++ b/drivers/mfd/arizona.h @@ -13,6 +13,7 @@ #ifndef _WM5102_H #define _WM5102_H +#include #include #include @@ -26,6 +27,8 @@ extern const struct regmap_config wm5110_spi_regmap; extern const struct dev_pm_ops arizona_pm_ops; +extern const struct of_device_id arizona_of_match; + extern const struct regmap_irq_chip wm5102_aod; extern const struct regmap_irq_chip wm5102_irq; @@ -37,4 +40,13 @@ int arizona_dev_exit(struct arizona *arizona); int arizona_irq_init(struct arizona *arizona); int arizona_irq_exit(struct arizona *arizona); +#ifdef CONFIG_OF +int arizona_of_get_type(struct device *dev); +#else +static inline int arizona_of_get_type(struct device *dev) +{ + return 0; +} +#endif + #endif -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/