[PATCH] Input: stmpe-ts - enforce device tree only mode

[Dmitry Torokhov]

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.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
---

Not tested as no device, please give it a spin.

 drivers/input/touchscreen/Kconfig    |  1 +
 drivers/input/touchscreen/stmpe-ts.c | 29 ++++--------------------
 include/linux/mfd/stmpe.h            | 44 ------------------------------------
 3 files changed, 6 insertions(+), 68 deletions(-)

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 80f6386..7afa6a2 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -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.
diff --git a/drivers/input/touchscreen/stmpe-ts.c b/drivers/input/touchscreen/stmpe-ts.c
index e4977c6..e414d43 100644
--- a/drivers/input/touchscreen/stmpe-ts.c
+++ b/drivers/input/touchscreen/stmpe-ts.c
@@ -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@xxxxxxxxxxxxxx>");
 MODULE_DESCRIPTION("STMPEXXX touchscreen driver");
 MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:" STMPE_TS_NAME);
diff --git a/include/linux/mfd/stmpe.h b/include/linux/mfd/stmpe.h
index c9d8690..cb83883 100644
--- a/include/linux/mfd/stmpe.h
+++ b/include/linux/mfd/stmpe.h
@@ -118,47 +118,6 @@ 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
  * @blocks: bitmask of blocks to enable (use STMPE_BLOCK_*)
@@ -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
-- 
2.2.0.rc0.207.ga3a616c


-- 
Dmitry
--
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