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author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2023-12-04 23:05:21 +0100 |
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committer | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2023-12-07 14:28:35 +0100 |
commit | 9c0a5b3f9e55cf9a3dc85843666cae28adfdf7e3 (patch) | |
tree | d9ce0997265c6effdfc7fda9a4bee7cf60e44bae /drivers/w1 | |
parent | 271c81935801d6449bb7bab5ccfc6cd38238c62b (diff) | |
download | lwn-9c0a5b3f9e55cf9a3dc85843666cae28adfdf7e3.tar.gz lwn-9c0a5b3f9e55cf9a3dc85843666cae28adfdf7e3.zip |
w1: gpio: Don't use platform data for driver data
struct device's .platform_data isn't for drivers to write to. For
driver-specific data there is .driver_data instead.
As there is no in-tree platform that provides w1_gpio_platform_data,
drop the include file and replace it by a local struct w1_gpio_ddata.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/8f7ebe03ddaa5a5c6e2b36fecdf59da7fc373527.1701727212.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Diffstat (limited to 'drivers/w1')
-rw-r--r-- | drivers/w1/masters/w1-gpio.c | 56 |
1 files changed, 27 insertions, 29 deletions
diff --git a/drivers/w1/masters/w1-gpio.c b/drivers/w1/masters/w1-gpio.c index e45acb6d916e..8d65db65178c 100644 --- a/drivers/w1/masters/w1-gpio.c +++ b/drivers/w1/masters/w1-gpio.c @@ -9,7 +9,6 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/slab.h> -#include <linux/w1-gpio.h> #include <linux/gpio/consumer.h> #include <linux/of_platform.h> #include <linux/err.h> @@ -18,9 +17,16 @@ #include <linux/w1.h> +struct w1_gpio_ddata { + struct gpio_desc *gpiod; + struct gpio_desc *pullup_gpiod; + void (*enable_external_pullup)(int enable); + unsigned int pullup_duration; +}; + static u8 w1_gpio_set_pullup(void *data, int delay) { - struct w1_gpio_platform_data *pdata = data; + struct w1_gpio_ddata *pdata = data; if (delay) { pdata->pullup_duration = delay; @@ -46,14 +52,14 @@ static u8 w1_gpio_set_pullup(void *data, int delay) static void w1_gpio_write_bit(void *data, u8 bit) { - struct w1_gpio_platform_data *pdata = data; + struct w1_gpio_ddata *pdata = data; gpiod_set_value(pdata->gpiod, bit); } static u8 w1_gpio_read_bit(void *data) { - struct w1_gpio_platform_data *pdata = data; + struct w1_gpio_ddata *pdata = data; return gpiod_get_value(pdata->gpiod) ? 1 : 0; } @@ -69,35 +75,25 @@ MODULE_DEVICE_TABLE(of, w1_gpio_dt_ids); static int w1_gpio_probe(struct platform_device *pdev) { struct w1_bus_master *master; - struct w1_gpio_platform_data *pdata; + struct w1_gpio_ddata *pdata; struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; /* Enforce open drain mode by default */ enum gpiod_flags gflags = GPIOD_OUT_LOW_OPEN_DRAIN; int err; - if (of_have_populated_dt()) { - pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); - if (!pdata) - return -ENOMEM; - - /* - * This parameter means that something else than the gpiolib has - * already set the line into open drain mode, so we should just - * driver it high/low like we are in full control of the line and - * open drain will happen transparently. - */ - if (of_property_present(np, "linux,open-drain")) - gflags = GPIOD_OUT_LOW; - - pdev->dev.platform_data = pdata; - } - pdata = dev_get_platdata(dev); + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; - if (!pdata) { - dev_err(dev, "No configuration data\n"); - return -ENXIO; - } + /* + * This parameter means that something else than the gpiolib has + * already set the line into open drain mode, so we should just + * driver it high/low like we are in full control of the line and + * open drain will happen transparently. + */ + if (of_property_present(np, "linux,open-drain")) + gflags = GPIOD_OUT_LOW; master = devm_kzalloc(dev, sizeof(struct w1_bus_master), GFP_KERNEL); @@ -152,7 +148,7 @@ static int w1_gpio_probe(struct platform_device *pdev) static int w1_gpio_remove(struct platform_device *pdev) { struct w1_bus_master *master = platform_get_drvdata(pdev); - struct w1_gpio_platform_data *pdata = dev_get_platdata(&pdev->dev); + struct w1_gpio_ddata *pdata = master->data; if (pdata->enable_external_pullup) pdata->enable_external_pullup(0); @@ -167,7 +163,8 @@ static int w1_gpio_remove(struct platform_device *pdev) static int __maybe_unused w1_gpio_suspend(struct device *dev) { - struct w1_gpio_platform_data *pdata = dev_get_platdata(dev); + struct w1_bus_master *master = dev_get_drvdata(dev); + struct w1_gpio_ddata *pdata = master->data; if (pdata->enable_external_pullup) pdata->enable_external_pullup(0); @@ -177,7 +174,8 @@ static int __maybe_unused w1_gpio_suspend(struct device *dev) static int __maybe_unused w1_gpio_resume(struct device *dev) { - struct w1_gpio_platform_data *pdata = dev_get_platdata(dev); + struct w1_bus_master *master = dev_get_drvdata(dev); + struct w1_gpio_ddata *pdata = master->data; if (pdata->enable_external_pullup) pdata->enable_external_pullup(1); |