@@ -8,15 +8,16 @@
#include <linux/irq.h>
#include <linux/gpio.h>
#include <linux/gpio/machine.h>
+#include <linux/gpio/property.h>
#include <linux/kernel.h>
#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>
#include <linux/spi/spi.h>
-#include <linux/spi/ads7846.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
@@ -35,6 +36,25 @@
#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,
+ NULL
+};
+
#define ADS7846_PENDOWN_GPIO 15
static const unsigned int nokia770_keymap[] = {
@@ -85,40 +105,46 @@ static struct platform_device *nokia770_devices[] __initdata = {
&nokia770_kp_device,
};
-static void mipid_shutdown(struct mipid_platform_data *pdata)
-{
- if (pdata->nreset_gpio != -1) {
- printk(KERN_INFO "shutdown LCD\n");
- gpio_set_value(pdata->nreset_gpio, 0);
- msleep(120);
- }
-}
-
-static struct mipid_platform_data nokia770_mipid_platform_data = {
- .shutdown = mipid_shutdown,
-};
+static struct mipid_platform_data nokia770_mipid_platform_data = { };
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;
nokia770_mipid_platform_data.data_lines = 16;
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_LOW),
+ { }
+};
+
+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 +154,14 @@ 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 +239,16 @@ 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 +282,8 @@ 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 */
@@ -273,8 +303,8 @@ static void __init omap_nokia770_init(void)
/* Unmask SleepX signal */
omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
+ software_node_register_node_group(nokia770_gpiochip_nodes);
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,
ARRAY_SIZE(nokia770_spi_board_info));
omap_serial_init();
@@ -506,10 +506,18 @@ 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_LOW),
+ { }
+ },
+};
+
static void spitz_bl_kick_battery(void)
{
void (*kick_batt)(void);
@@ -594,6 +602,7 @@ 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));
@@ -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_LOW),
+ { }
+ },
+};
+
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));
@@ -24,11 +24,8 @@
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/pm.h>
-#include <linux/of.h>
-#include <linux/of_gpio.h>
-#include <linux/of_device.h>
+#include <linux/property.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 +137,7 @@ 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 +220,7 @@ 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 +986,6 @@ 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 +994,15 @@ 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;
@@ -1119,7 +1104,6 @@ static int ads7846_setup_spi_msg(struct ads7846 *ts,
return 0;
}
-#ifdef CONFIG_OF
static const struct of_device_id ads7846_dt_ids[] = {
{ .compatible = "ti,tsc2046", .data = (void *) 7846 },
{ .compatible = "ti,ads7843", .data = (void *) 7843 },
@@ -1130,20 +1114,14 @@ static const struct of_device_id ads7846_dt_ids[] = {
};
MODULE_DEVICE_TABLE(of, ads7846_dt_ids);
-static const struct ads7846_platform_data *ads7846_probe_dt(struct device *dev)
+static const struct ads7846_platform_data *ads7846_get_props(struct device *dev)
{
struct ads7846_platform_data *pdata;
- struct device_node *node = dev->of_node;
- const struct of_device_id *match;
+ const struct platform_device_id *pdev_id;
u32 value;
- if (!node) {
- dev_err(dev, "Device does not have associated DT data\n");
- return ERR_PTR(-EINVAL);
- }
-
- match = of_match_device(ads7846_dt_ids, dev);
- if (!match) {
+ pdev_id = device_get_match_data(dev);
+ if (!pdev_id) {
dev_err(dev, "Unknown device model\n");
return ERR_PTR(-EINVAL);
}
@@ -1152,60 +1130,51 @@ static const struct ads7846_platform_data *ads7846_probe_dt(struct device *dev)
if (!pdata)
return ERR_PTR(-ENOMEM);
- pdata->model = (unsigned long)match->data;
+ pdata->model = (unsigned long)pdev_id->driver_data;
- of_property_read_u16(node, "ti,vref-delay-usecs",
- &pdata->vref_delay_usecs);
- of_property_read_u16(node, "ti,vref-mv", &pdata->vref_mv);
- pdata->keep_vref_on = of_property_read_bool(node, "ti,keep-vref-on");
+ device_property_read_u16(dev, "ti,vref-delay-usecs",
+ &pdata->vref_delay_usecs);
+ device_property_read_u16(dev, "ti,vref-mv", &pdata->vref_mv);
+ pdata->keep_vref_on = device_property_read_bool(dev, "ti,keep-vref-on");
- pdata->swap_xy = of_property_read_bool(node, "ti,swap-xy");
+ pdata->swap_xy = device_property_read_bool(dev, "ti,swap-xy");
- of_property_read_u16(node, "ti,settle-delay-usec",
- &pdata->settle_delay_usecs);
- of_property_read_u16(node, "ti,penirq-recheck-delay-usecs",
- &pdata->penirq_recheck_delay_usecs);
+ device_property_read_u16(dev, "ti,settle-delay-usec",
+ &pdata->settle_delay_usecs);
+ device_property_read_u16(dev, "ti,penirq-recheck-delay-usecs",
+ &pdata->penirq_recheck_delay_usecs);
- of_property_read_u16(node, "ti,x-plate-ohms", &pdata->x_plate_ohms);
- of_property_read_u16(node, "ti,y-plate-ohms", &pdata->y_plate_ohms);
+ device_property_read_u16(dev, "ti,x-plate-ohms", &pdata->x_plate_ohms);
+ device_property_read_u16(dev, "ti,y-plate-ohms", &pdata->y_plate_ohms);
- of_property_read_u16(node, "ti,x-min", &pdata->x_min);
- of_property_read_u16(node, "ti,y-min", &pdata->y_min);
- of_property_read_u16(node, "ti,x-max", &pdata->x_max);
- of_property_read_u16(node, "ti,y-max", &pdata->y_max);
+ device_property_read_u16(dev, "ti,x-min", &pdata->x_min);
+ device_property_read_u16(dev, "ti,y-min", &pdata->y_min);
+ device_property_read_u16(dev, "ti,x-max", &pdata->x_max);
+ device_property_read_u16(dev, "ti,y-max", &pdata->y_max);
/*
* touchscreen-max-pressure gets parsed during
* touchscreen_parse_properties()
*/
- of_property_read_u16(node, "ti,pressure-min", &pdata->pressure_min);
- if (!of_property_read_u32(node, "touchscreen-min-pressure", &value))
+ device_property_read_u16(dev, "ti,pressure-min", &pdata->pressure_min);
+ if (!device_property_read_u32(dev, "touchscreen-min-pressure", &value))
pdata->pressure_min = (u16) value;
- of_property_read_u16(node, "ti,pressure-max", &pdata->pressure_max);
+ device_property_read_u16(dev, "ti,pressure-max", &pdata->pressure_max);
- of_property_read_u16(node, "ti,debounce-max", &pdata->debounce_max);
- if (!of_property_read_u32(node, "touchscreen-average-samples", &value))
+ device_property_read_u16(dev, "ti,debounce-max", &pdata->debounce_max);
+ if (!device_property_read_u32(dev, "touchscreen-average-samples", &value))
pdata->debounce_max = (u16) value;
- of_property_read_u16(node, "ti,debounce-tol", &pdata->debounce_tol);
- of_property_read_u16(node, "ti,debounce-rep", &pdata->debounce_rep);
+ device_property_read_u16(dev, "ti,debounce-tol", &pdata->debounce_tol);
+ device_property_read_u16(dev, "ti,debounce-rep", &pdata->debounce_rep);
- of_property_read_u32(node, "ti,pendown-gpio-debounce",
+ device_property_read_u32(dev, "ti,pendown-gpio-debounce",
&pdata->gpio_pendown_debounce);
- 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);
+ pdata->wakeup = device_property_read_bool(dev, "wakeup-source") ||
+ device_property_read_bool(dev, "linux,wakeup");
return pdata;
}
-#else
-static const struct ads7846_platform_data *ads7846_probe_dt(struct device *dev)
-{
- dev_err(dev, "no platform data defined\n");
- return ERR_PTR(-EINVAL);
-}
-#endif
static void ads7846_regulator_disable(void *regulator)
{
@@ -1269,7 +1238,7 @@ static int ads7846_probe(struct spi_device *spi)
pdata = dev_get_platdata(dev);
if (!pdata) {
- pdata = ads7846_probe_dt(dev);
+ pdata = ads7846_get_props(dev);
if (IS_ERR(pdata))
return PTR_ERR(pdata);
}
@@ -1426,7 +1395,7 @@ static struct spi_driver ads7846_driver = {
.driver = {
.name = "ads7846",
.pm = pm_sleep_ptr(&ads7846_pm),
- .of_match_table = of_match_ptr(ads7846_dt_ids),
+ .of_match_table = ads7846_dt_ids,
},
.probe = ads7846_probe,
.remove = ads7846_remove,
@@ -7,6 +7,7 @@
*/
#include <linux/device.h>
#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/spi/spi.h>
@@ -41,6 +42,7 @@ struct mipid_device {
when we can issue the
next sleep in/out command */
unsigned long hw_guard_wait; /* max guard time in jiffies */
+ struct gpio_desc *reset;
struct omapfb_device *fbdev;
struct spi_device *spi;
@@ -556,6 +558,12 @@ static int mipid_spi_probe(struct spi_device *spi)
return -ENOMEM;
}
+ /* This will de-assert RESET if active */
+ md->reset = gpiod_get(&spi->dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(md->reset))
+ return dev_err_probe(&spi->dev, PTR_ERR(md->reset),
+ "no reset GPIO line\n");
+
spi->mode = SPI_MODE_0;
md->spi = spi;
dev_set_drvdata(&spi->dev, md);
@@ -574,6 +582,8 @@ static void mipid_spi_remove(struct spi_device *spi)
{
struct mipid_device *md = dev_get_drvdata(&spi->dev);
+ /* Asserts RESET */
+ gpiod_set_value(md->reset, 1);
mipid_disable(&md->panel);
kfree(md);
}
@@ -15,10 +15,8 @@ enum mipid_test_result {
#ifdef __KERNEL__
struct mipid_platform_data {
- int nreset_gpio;
int data_lines;
- void (*shutdown)(struct mipid_platform_data *pdata);
void (*set_bklight_level)(struct mipid_platform_data *pdata,
int level);
int (*get_bklight_level)(struct mipid_platform_data *pdata);
@@ -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);