diff options
| author | Stefan Agner <stefan.agner@toradex.com> | 2014-01-24 17:29:43 +0100 |
|---|---|---|
| committer | Philippe Schenker <philippe.schenker@toradex.com> | 2020-08-13 16:04:31 +0200 |
| commit | 95820e5d3ff253905cdf8ca5cb651cfcf58d3b8f (patch) | |
| tree | ba142db0edc5544d91283f416abe8a2fa04d7fa0 /drivers/input/touchscreen/fusion_F0710A.c | |
| parent | 113567a7d96ce2ea060990676031395978a7c8ad (diff) | |
input: touchscreen: added platform data for Fusion touchscreen
Added platform data struct to define interrupt and reset GPIO. This
allows to initialize the touchscreen controller inside the driver
rather then in each platform and use the driver as a module.
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Acked-by: Max Krummenacher <max.krummenacher@toradex.com>
(cherry picked from commit cb82730b70f31af3b43041ac4e47de69c18016c9)
(cherry picked from commit b0c045aef6b33205bffc1489a2887a88eae8809e)
(cherry picked from commit ef325506b3e38edc8b780e5457f88008871fa4da)
(cherry picked from commit 69245736934d58b14e803a25b9af9ab9620288cd)
Diffstat (limited to 'drivers/input/touchscreen/fusion_F0710A.c')
| -rw-r--r-- | drivers/input/touchscreen/fusion_F0710A.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/fusion_F0710A.c b/drivers/input/touchscreen/fusion_F0710A.c index af110b067a23..94a643e7a7c1 100644 --- a/drivers/input/touchscreen/fusion_F0710A.c +++ b/drivers/input/touchscreen/fusion_F0710A.c @@ -16,6 +16,7 @@ #include <linux/delay.h> #include <asm/irq.h> #include <linux/gpio.h> +#include <linux/input/fusion_F0710A.h> #include "fusion_F0710A.h" @@ -264,10 +265,52 @@ const static u8* g_ver_product[4] = { static int fusion_F0710A_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { + struct fusion_f0710a_init_data *pdata = i2c->dev.platform_data; int ret; u8 ver_product, ver_id; u32 version; + if (pdata == NULL) + { + dev_err(&i2c->dev, "No platform data for Fusion driver\n"); + return -ENODEV; + } + + /* Request pinmuxing, if necessary */ + if (pdata->pinmux_fusion_pins != NULL) + { + ret = pdata->pinmux_fusion_pins(); + if (ret < 0) { + dev_err(&i2c->dev, "muxing GPIOs failed\n"); + return -ENODEV; + } + } + + if ((gpio_request(pdata->gpio_int, "SO-DIMM 28 (Iris X16-38 Pen)") == 0) && + (gpio_direction_input(pdata->gpio_int) == 0)) { + gpio_export(pdata->gpio_int, 0); + } else { + printk(KERN_WARNING "Could not obtain GPIO for Fusion pen down\n"); + return -ENODEV; + } + + if ((gpio_request(pdata->gpio_reset, "SO-DIMM 30 (Iris X16-39 RST)") == 0) && + (gpio_direction_output(pdata->gpio_reset, 1) == 0)) { + + /* Generate a 0 => 1 edge explicitly... */ + gpio_set_value(pdata->gpio_reset, 0); + mdelay(10); + gpio_set_value(pdata->gpio_reset, 1); + + gpio_export(pdata->gpio_reset, 0); + } else { + printk(KERN_WARNING "Could not obtain GPIO for Fusion reset\n"); + return -ENODEV; + } + + /* Use Pen Down GPIO as sampling interrupt */ + i2c->irq = gpio_to_irq(pdata->gpio_int); + if(!i2c->irq) { dev_err(&i2c->dev, "fusion_F0710A irq < 0 \n"); @@ -393,6 +436,10 @@ static SIMPLE_DEV_PM_OPS(fusion_F0710A_pm_ops, static int fusion_F0710A_remove(struct i2c_client *i2c) { + struct fusion_f0710a_init_data *pdata = i2c->dev.platform_data; + + gpio_free(pdata->gpio_int); + gpio_free(pdata->gpio_reset); destroy_workqueue(fusion_F0710A.workq); free_irq(i2c->irq, &fusion_F0710A); input_unregister_device(fusion_F0710A.input); |