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Input: stmpe-ts - enforce device tree only mode

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The STMPE MFD is only used with device tree configured systems (and STMPE
MFD core depends on OF), so force the configuration to come from device
tree only.

Tested-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2015-05-22 13:44:33 -07:00
parent f91a3f08b7
commit e4b88e1989
3 changed files with 6 additions and 68 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/input/touchscreen/Kconfig
View File

@ -958,6 +958,7 @@ config TOUCHSCREEN_ST1232
config TOUCHSCREEN_STMPE
tristate "STMicroelectronics STMPE touchscreens"
depends on MFD_STMPE
depends on (OF || COMPILE_TEST)
help
Say Y here if you want support for STMicroelectronics
STMPE touchscreen controllers.

29
drivers/input/touchscreen/stmpe-ts.c
View File

@ -267,27 +267,10 @@ static void stmpe_ts_close(struct input_dev *dev)
static void stmpe_ts_get_platform_info(struct platform_device *pdev,
struct stmpe_touch *ts)
{
struct stmpe *stmpe = dev_get_drvdata(pdev->dev.parent);
struct device_node *np = pdev->dev.of_node;
struct stmpe_ts_platform_data *ts_pdata = NULL;
ts->stmpe = stmpe;
if (stmpe->pdata && stmpe->pdata->ts) {
ts_pdata = stmpe->pdata->ts;
ts->sample_time = ts_pdata->sample_time;
ts->mod_12b = ts_pdata->mod_12b;
ts->ref_sel = ts_pdata->ref_sel;
ts->adc_freq = ts_pdata->adc_freq;
ts->ave_ctrl = ts_pdata->ave_ctrl;
ts->touch_det_delay = ts_pdata->touch_det_delay;
ts->settling = ts_pdata->settling;
ts->fraction_z = ts_pdata->fraction_z;
ts->i_drive = ts_pdata->i_drive;
} else if (np) {
u32 val;
u32 val;
if (np) {
if (!of_property_read_u32(np, "st,sample-time", &val))
ts->sample_time = val;
if (!of_property_read_u32(np, "st,mod-12b", &val))
@ -311,6 +294,7 @@ static void stmpe_ts_get_platform_info(struct platform_device *pdev,
static int stmpe_input_probe(struct platform_device *pdev)
{
struct stmpe *stmpe = dev_get_drvdata(pdev->dev.parent);
struct stmpe_touch *ts;
struct input_dev *idev;
int error;
@ -329,6 +313,7 @@ static int stmpe_input_probe(struct platform_device *pdev)
return -ENOMEM;
platform_set_drvdata(pdev, ts);
ts->stmpe = stmpe;
ts->idev = idev;
ts->dev = &pdev->dev;
@ -351,14 +336,13 @@ static int stmpe_input_probe(struct platform_device *pdev)
idev->name = STMPE_TS_NAME;
idev->phys = STMPE_TS_NAME"/input0";
idev->id.bustype = BUS_I2C;
idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
idev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
idev->open = stmpe_ts_open;
idev->close = stmpe_ts_close;
input_set_drvdata(idev, ts);
input_set_capability(idev, EV_KEY, BTN_TOUCH);
input_set_abs_params(idev, ABS_X, 0, XY_MASK, 0, 0);
input_set_abs_params(idev, ABS_Y, 0, XY_MASK, 0, 0);
input_set_abs_params(idev, ABS_PRESSURE, 0x0, 0xff, 0, 0);
@ -390,15 +374,12 @@ static struct platform_driver stmpe_ts_driver = {
};
module_platform_driver(stmpe_ts_driver);
#ifdef CONFIG_OF
static const struct of_device_id stmpe_ts_ids[] = {
{ .compatible = "st,stmpe-ts", },
{ },
};
MODULE_DEVICE_TABLE(of, stmpe_ts_ids);
#endif
MODULE_AUTHOR("Luotao Fu <l.fu@pengutronix.de>");
MODULE_DESCRIPTION("STMPEXXX touchscreen driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" STMPE_TS_NAME);

44
include/linux/mfd/stmpe.h
View File

@ -117,47 +117,6 @@ extern int stmpe_disable(struct stmpe *stmpe, unsigned int blocks);
#define STMPE_GPIO_NOREQ_811_TOUCH (0xf0)
/**
* struct stmpe_ts_platform_data - stmpe811 touch screen controller platform
* data
* @sample_time: ADC converstion time in number of clock.
* (0 -> 36 clocks, 1 -> 44 clocks, 2 -> 56 clocks, 3 -> 64 clocks,
* 4 -> 80 clocks, 5 -> 96 clocks, 6 -> 144 clocks),
* recommended is 4.
* @mod_12b: ADC Bit mode (0 -> 10bit ADC, 1 -> 12bit ADC)
* @ref_sel: ADC reference source
* (0 -> internal reference, 1 -> external reference)
* @adc_freq: ADC Clock speed
* (0 -> 1.625 MHz, 1 -> 3.25 MHz, 2 || 3 -> 6.5 MHz)
* @ave_ctrl: Sample average control
* (0 -> 1 sample, 1 -> 2 samples, 2 -> 4 samples, 3 -> 8 samples)
* @touch_det_delay: Touch detect interrupt delay
* (0 -> 10 us, 1 -> 50 us, 2 -> 100 us, 3 -> 500 us,
* 4-> 1 ms, 5 -> 5 ms, 6 -> 10 ms, 7 -> 50 ms)
* recommended is 3
* @settling: Panel driver settling time
* (0 -> 10 us, 1 -> 100 us, 2 -> 500 us, 3 -> 1 ms,
* 4 -> 5 ms, 5 -> 10 ms, 6 for 50 ms, 7 -> 100 ms)
* recommended is 2
* @fraction_z: Length of the fractional part in z
* (fraction_z ([0..7]) = Count of the fractional part)
* recommended is 7
* @i_drive: current limit value of the touchscreen drivers
* (0 -> 20 mA typical 35 mA max, 1 -> 50 mA typical 80 mA max)
*
* */
struct stmpe_ts_platform_data {
u8 sample_time;
u8 mod_12b;
u8 ref_sel;
u8 adc_freq;
u8 ave_ctrl;
u8 touch_det_delay;
u8 settling;
u8 fraction_z;
u8 i_drive;
};
/**
* struct stmpe_platform_data - STMPE platform data
* @id: device id to distinguish between multiple STMPEs on the same board
@ -168,7 +127,6 @@ struct stmpe_ts_platform_data {
* @irq_over_gpio: true if gpio is used to get irq
* @irq_gpio: gpio number over which irq will be requested (significant only if
* irq_over_gpio is true)
* @ts: touchscreen-specific platform data
*/
struct stmpe_platform_data {
int id;
@ -178,8 +136,6 @@ struct stmpe_platform_data {
bool irq_over_gpio;
int irq_gpio;
int autosleep_timeout;
struct stmpe_ts_platform_data *ts;
};
#endif