| Message ID | 20230430-nokia770-regression-v1-1-97704e36b094@linaro.org (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Fix up Nokia 770 regression | expand |
On Sun, Apr 30, 2023 at 11:22:16AM +0200, Linus Walleij wrote: > The ADS7846 has some limited support for using GPIO descriptors, > let's convert it over completely and fix all users to provide > GPIOs in descriptor tables. > > The Nokia 770 now has dynamic allocation of IRQ numbers, so this > needs to be fixed for it to work. > > Fixes: 92bf78b33b0b ("gpio: omap: use dynamic allocation of base") > Signed-off-by: Linus Walleij <linus.walleij@linaro.org> > --- > arch/arm/mach-omap1/board-nokia770.c | 12 +++++++++++- > arch/arm/mach-pxa/spitz.c | 11 ++++++++++- > arch/mips/alchemy/devboards/db1000.c | 11 ++++++++++- > drivers/input/touchscreen/ads7846.c | 32 ++++++++------------------------ > include/linux/spi/ads7846.h | 2 -- > 5 files changed, 39 insertions(+), 29 deletions(-) > > diff --git a/arch/arm/mach-omap1/board-nokia770.c b/arch/arm/mach-omap1/board-nokia770.c > index a501a473ffd6..eb7652670447 100644 > --- a/arch/arm/mach-omap1/board-nokia770.c > +++ b/arch/arm/mach-omap1/board-nokia770.c > @@ -118,7 +118,16 @@ static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = > .debounce_max = 10, > .debounce_tol = 3, > .debounce_rep = 1, > - .gpio_pendown = ADS7846_PENDOWN_GPIO, > +}; > + > +static struct gpiod_lookup_table nokia770_ads7846_gpio_table = { > + /* SPI bus 2, device with chip select 0 */ > + .dev_id = "spi2.0", > + .table = { > + GPIO_LOOKUP("gpio-0-15", ADS7846_PENDOWN_GPIO, > + "pendown", GPIO_ACTIVE_HIGH), > + { } > + }, > }; I would like to eventually get rid of GPIO_LOOKUP in favor of PROPERTY_ENTRY_GPIO. Can we try something like the draft below (just typed, not even compiled): diff --git a/arch/arm/mach-omap1/board-nokia770.c b/arch/arm/mach-omap1/board-nokia770.c index a501a473ffd6..34b8e392b917 100644 --- a/arch/arm/mach-omap1/board-nokia770.c +++ b/arch/arm/mach-omap1/board-nokia770.c @@ -12,6 +12,7 @@ #include <linux/init.h> #include <linux/mutex.h> #include <linux/platform_device.h> +#include <linux/property.h> #include <linux/input.h> #include <linux/omapfb.h> @@ -35,6 +36,24 @@ #include "clock.h" #include "mmc.h" +static const struct software_node nokia770_mpuio_gpiochip_node = { + .name = "mpuio", +}; + +static const struct software_node nokia770_gpiochip1_node = { + .name = "gpio-0-15", +}; + +static const struct software_node nokia770_gpiochip2_node = { + .name = "gpio-16-31", +}; + +static const struct software_node nokia770_gpiochip_nodes[] = { + &nokia770_mpuio_gpiochip_node + &nokia770_gpiochip1_node, + &nokia770_gpiochip2_node, +}; + #define ADS7846_PENDOWN_GPIO 15 static const unsigned int nokia770_keymap[] = { @@ -102,6 +121,17 @@ static const struct omap_lcd_config nokia770_lcd_config __initconst = { .ctrl_name = "hwa742", }; +static const struct property_entry nokia770_mipid_props[] = { + PROPERTY_ENTRY_GPIO("reset-gpios", &nokia770_gpiochip1_node, + 13, GPIO_ACTIVE_LOW), + { } +}; + +static const struct software_node nokia770_mipid_swnode = { + .name = "lcd_mipid", + .properties = nokia770_mipid_props, +}; + static void __init mipid_dev_init(void) { nokia770_mipid_platform_data.nreset_gpio = 13; @@ -110,15 +140,22 @@ static void __init mipid_dev_init(void) omapfb_set_lcd_config(&nokia770_lcd_config); } -static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = { - .x_max = 0x0fff, - .y_max = 0x0fff, - .x_plate_ohms = 180, - .pressure_max = 255, - .debounce_max = 10, - .debounce_tol = 3, - .debounce_rep = 1, - .gpio_pendown = ADS7846_PENDOWN_GPIO, +static const struct property_entry nokia770_ads7846_props[] = { + PROPERTY_ENTRY_U32("touchscreen-size-x", 4096), + PROPERTY_ENTRY_U32("touchscreen-size-y", 4096), + PROPERTY_ENTRY_U32("touchscreen-max-pressure", 256), + PROPERTY_ENTRY_U32("touchscreen-average-samples", 10), + PROPERTY_ENTRY_U16("ti,x-plate-ohms", 180), + PROPERTY_ENTRY_U16("ti,debounce-tol", 3), + PROPERTY_ENTRY_U16("ti,debounce-rep", 1), + PROPERTY_ENTRY_GPIO("pendown-gpios", &nokia770_gpiochip1_node, + ADS7846_PENDOWN_GPIO, GPIO_ACTIVE_HIGH), + { } +}; + +static const struct software_node nokia770_ads7846_swnode = { + .name = "ads7846", + .properties = nokia770_ads7846_props, }; static struct spi_board_info nokia770_spi_board_info[] __initdata = { @@ -128,13 +165,14 @@ static struct spi_board_info nokia770_spi_board_info[] __initdata = { .chip_select = 3, .max_speed_hz = 12000000, .platform_data = &nokia770_mipid_platform_data, + .swnode = &nokia770_mipid_swnode, }, [1] = { .modalias = "ads7846", .bus_num = 2, .chip_select = 0, .max_speed_hz = 2500000, - .platform_data = &nokia770_ads7846_platform_data, + .swnode = &nokia770_ads7846_swnode, }, }; @@ -212,14 +250,15 @@ static inline void nokia770_mmc_init(void) #endif #if IS_ENABLED(CONFIG_I2C_CBUS_GPIO) -static struct gpiod_lookup_table nokia770_cbus_gpio_table = { - .dev_id = "i2c-cbus-gpio.2", - .table = { - GPIO_LOOKUP_IDX("mpuio", 9, NULL, 0, 0), /* clk */ - GPIO_LOOKUP_IDX("mpuio", 10, NULL, 1, 0), /* dat */ - GPIO_LOOKUP_IDX("mpuio", 11, NULL, 2, 0), /* sel */ - { }, - }, +static const struct software_node_ref_args nokia770_cbus_gpio_refs[] = { + SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_swnode, 9, 0), + SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_swnode, 10, 0), + SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_swnode, 11, 0), +}; + +static const struct property_entry nokia770_ads7846_props[] = { + PROPERTY_ENTRY_REF_ARRAY("gpios", nokia770_cbus_gpio_refs), + { } }; static struct platform_device nokia770_cbus_device = { @@ -253,7 +292,8 @@ static void __init nokia770_cbus_init(void) nokia770_i2c_board_info_2[1].irq = gpio_to_irq(tahvo_irq_gpio); i2c_register_board_info(2, nokia770_i2c_board_info_2, ARRAY_SIZE(nokia770_i2c_board_info_2)); - gpiod_add_lookup_table(&nokia770_cbus_gpio_table); + device_create_managed_software_node(&nokia770_cbus_device.dev, + nokia770_cbus_props, NULL); platform_device_register(&nokia770_cbus_device); } #else /* CONFIG_I2C_CBUS_GPIO */ @@ -273,6 +313,7 @@ static void __init omap_nokia770_init(void) /* Unmask SleepX signal */ omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004); + software_node_register_node_group(nokia770_gpiochip_swnodes); platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices)); nokia770_spi_board_info[1].irq = gpio_to_irq(15); spi_register_board_info(nokia770_spi_board_info, This will need switching ads7846.c from using of_property* to device_property* so that it can parse software nodes. Thanks.
diff --git a/arch/arm/mach-omap1/board-nokia770.c b/arch/arm/mach-omap1/board-nokia770.c index a501a473ffd6..eb7652670447 100644 --- a/arch/arm/mach-omap1/board-nokia770.c +++ b/arch/arm/mach-omap1/board-nokia770.c @@ -118,7 +118,16 @@ static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = .debounce_max = 10, .debounce_tol = 3, .debounce_rep = 1, - .gpio_pendown = ADS7846_PENDOWN_GPIO, +}; + +static struct gpiod_lookup_table nokia770_ads7846_gpio_table = { + /* SPI bus 2, device with chip select 0 */ + .dev_id = "spi2.0", + .table = { + GPIO_LOOKUP("gpio-0-15", ADS7846_PENDOWN_GPIO, + "pendown", GPIO_ACTIVE_HIGH), + { } + }, }; static struct spi_board_info nokia770_spi_board_info[] __initdata = { @@ -274,6 +283,7 @@ static void __init omap_nokia770_init(void) omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004); platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices)); + gpiod_add_lookup_table(&nokia770_ads7846_gpio_table); nokia770_spi_board_info[1].irq = gpio_to_irq(15); spi_register_board_info(nokia770_spi_board_info, ARRAY_SIZE(nokia770_spi_board_info)); diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c index 26f0ebc4d136..4d2a72804495 100644 --- a/arch/arm/mach-pxa/spitz.c +++ b/arch/arm/mach-pxa/spitz.c @@ -505,10 +505,18 @@ static struct ads7846_platform_data spitz_ads7846_info = { .x_plate_ohms = 419, .y_plate_ohms = 486, .pressure_max = 1024, - .gpio_pendown = SPITZ_GPIO_TP_INT, .wait_for_sync = spitz_ads7846_wait_for_hsync, }; +static struct gpiod_lookup_table spitz_ads7846_gpio_table = { + .dev_id = "spi2.0", + .table = { + GPIO_LOOKUP("gpio-pxa", SPITZ_GPIO_TP_INT, + "pendown", GPIO_ACTIVE_HIGH), + { }, + }, +}; + static void spitz_bl_kick_battery(void) { void (*kick_batt)(void); @@ -593,6 +601,7 @@ static void __init spitz_spi_init(void) else gpiod_add_lookup_table(&spitz_lcdcon_gpio_table); + gpiod_add_lookup_table(&spitz_ads7846_gpio_table); gpiod_add_lookup_table(&spitz_spi_gpio_table); pxa2xx_set_spi_info(2, &spitz_spi_info); spi_register_board_info(ARRAY_AND_SIZE(spitz_spi_devices)); diff --git a/arch/mips/alchemy/devboards/db1000.c b/arch/mips/alchemy/devboards/db1000.c index 2c52ee27b4f2..f37644859f89 100644 --- a/arch/mips/alchemy/devboards/db1000.c +++ b/arch/mips/alchemy/devboards/db1000.c @@ -381,13 +381,21 @@ static struct platform_device db1100_mmc1_dev = { static struct ads7846_platform_data db1100_touch_pd = { .model = 7846, .vref_mv = 3300, - .gpio_pendown = 21, }; static struct spi_gpio_platform_data db1100_spictl_pd = { .num_chipselect = 1, }; +static struct gpiod_lookup_table db1100_touch_gpio_table = { + .dev_id = "spi0.0", + .table = { + GPIO_LOOKUP("alchemy-gpio2", 21, + "pendown", GPIO_ACTIVE_HIGH), + { }, + }, +}; + static struct spi_board_info db1100_spi_info[] __initdata = { [0] = { .modalias = "ads7846", @@ -474,6 +482,7 @@ int __init db1000_dev_setup(void) pfc |= (1 << 0); /* SSI0 pins as GPIOs */ alchemy_wrsys(pfc, AU1000_SYS_PINFUNC); + gpiod_add_lookup_table(&db1100_touch_gpio_table); spi_register_board_info(db1100_spi_info, ARRAY_SIZE(db1100_spi_info)); diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c index bb1058b1e7fd..a3c623009247 100644 --- a/drivers/input/touchscreen/ads7846.c +++ b/drivers/input/touchscreen/ads7846.c @@ -25,10 +25,8 @@ #include <linux/slab.h> #include <linux/pm.h> #include <linux/of.h> -#include <linux/of_gpio.h> #include <linux/of_device.h> #include <linux/gpio/consumer.h> -#include <linux/gpio.h> #include <linux/spi/spi.h> #include <linux/spi/ads7846.h> #include <linux/regulator/consumer.h> @@ -140,7 +138,7 @@ struct ads7846 { int (*filter)(void *data, int data_idx, int *val); void *filter_data; int (*get_pendown_state)(void); - int gpio_pendown; + struct gpio_desc *gpio_pendown; void (*wait_for_sync)(void); }; @@ -223,7 +221,7 @@ static int get_pendown_state(struct ads7846 *ts) if (ts->get_pendown_state) return ts->get_pendown_state(); - return !gpio_get_value(ts->gpio_pendown); + return !gpiod_get_value(ts->gpio_pendown); } static void ads7846_report_pen_up(struct ads7846 *ts) @@ -989,8 +987,6 @@ static int ads7846_setup_pendown(struct spi_device *spi, struct ads7846 *ts, const struct ads7846_platform_data *pdata) { - int err; - /* * REVISIT when the irq can be triggered active-low, or if for some * reason the touchscreen isn't hooked up, we don't need to access @@ -999,25 +995,15 @@ static int ads7846_setup_pendown(struct spi_device *spi, if (pdata->get_pendown_state) { ts->get_pendown_state = pdata->get_pendown_state; - } else if (gpio_is_valid(pdata->gpio_pendown)) { - - err = devm_gpio_request_one(&spi->dev, pdata->gpio_pendown, - GPIOF_IN, "ads7846_pendown"); - if (err) { - dev_err(&spi->dev, - "failed to request/setup pendown GPIO%d: %d\n", - pdata->gpio_pendown, err); - return err; + } else { + ts->gpio_pendown = gpiod_get(&spi->dev, "pendown", GPIOD_IN); + if (IS_ERR(ts->gpio_pendown)) { + dev_err(&spi->dev, "failed to request pendown GPIO\n"); + return PTR_ERR(ts->gpio_pendown); } - - ts->gpio_pendown = pdata->gpio_pendown; - if (pdata->gpio_pendown_debounce) - gpiod_set_debounce(gpio_to_desc(ts->gpio_pendown), + gpiod_set_debounce(ts->gpio_pendown, pdata->gpio_pendown_debounce); - } else { - dev_err(&spi->dev, "no get_pendown_state nor gpio_pendown?\n"); - return -EINVAL; } return 0; @@ -1195,8 +1181,6 @@ static const struct ads7846_platform_data *ads7846_probe_dt(struct device *dev) pdata->wakeup = of_property_read_bool(node, "wakeup-source") || of_property_read_bool(node, "linux,wakeup"); - pdata->gpio_pendown = of_get_named_gpio(dev->of_node, "pendown-gpio", 0); - return pdata; } #else diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h index d424c1aadf38..a04c1c34c344 100644 --- a/include/linux/spi/ads7846.h +++ b/include/linux/spi/ads7846.h @@ -35,8 +35,6 @@ struct ads7846_platform_data { u16 debounce_tol; /* tolerance used for filtering */ u16 debounce_rep; /* additional consecutive good readings * required after the first two */ - int gpio_pendown; /* the GPIO used to decide the pendown - * state if get_pendown_state == NULL */ int gpio_pendown_debounce; /* platform specific debounce time for * the gpio_pendown */ int (*get_pendown_state)(void);
The ADS7846 has some limited support for using GPIO descriptors, let's convert it over completely and fix all users to provide GPIOs in descriptor tables. The Nokia 770 now has dynamic allocation of IRQ numbers, so this needs to be fixed for it to work. Fixes: 92bf78b33b0b ("gpio: omap: use dynamic allocation of base") Signed-off-by: Linus Walleij <linus.walleij@linaro.org> --- arch/arm/mach-omap1/board-nokia770.c | 12 +++++++++++- arch/arm/mach-pxa/spitz.c | 11 ++++++++++- arch/mips/alchemy/devboards/db1000.c | 11 ++++++++++- drivers/input/touchscreen/ads7846.c | 32 ++++++++------------------------ include/linux/spi/ads7846.h | 2 -- 5 files changed, 39 insertions(+), 29 deletions(-)