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Date: Fri, 22 Feb 2013 17:57:53 +0000
From: Nick Dyer <nick.dyer@...ev.co.uk>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>,
Daniel Kurtz <djkurtz@...omium.org>,
Henrik Rydberg <rydberg@...omail.se>,
Joonyoung Shim <jy0922.shim@...sung.com>,
Alan.Bowens@...el.com, linux-input@...r.kernel.org,
linux-kernel@...r.kernel.org, pmeerw@...erw.net,
bleung@...omium.org, olofj@...omium.org
Cc: Nick Dyer <nick.dyer@...ev.co.uk>
Subject: [PATCH 06/40] Input: atmel_mxt_ts - Remove unnecessary platform data
It is not necessary to download these values to the chip on every probe, since
they are stored in non-volatile memory. They only represent a tiny subset of
the available configuration options, tracking all of these options in platform
data would be a sisyphean task. It makes platform data more complex and makes
device integration more error-prone because it duplicates information set
elsewhere. In addition, different versions of maXTouch chips may have these
values in different places or may not even have them at all.
Signed-off-by: Nick Dyer <nick.dyer@...ev.co.uk>
---
arch/arm/mach-exynos/mach-nuri.c | 5 ---
arch/arm/mach-exynos/mach-universal_c210.c | 5 ---
arch/arm/mach-s5pv210/mach-goni.c | 5 ---
drivers/input/touchscreen/atmel_mxt_ts.c | 50 ----------------------------
include/linux/i2c/atmel_mxt_ts.h | 6 +---
5 files changed, 1 insertion(+), 70 deletions(-)
diff --git a/arch/arm/mach-exynos/mach-nuri.c b/arch/arm/mach-exynos/mach-nuri.c
index c05d7aa..770d314 100644
--- a/arch/arm/mach-exynos/mach-nuri.c
+++ b/arch/arm/mach-exynos/mach-nuri.c
@@ -335,13 +335,8 @@ static struct i2c_board_info i2c1_devs[] __initdata = {
/* TSP */
static struct mxt_platform_data mxt_platform_data = {
- .x_line = 18,
- .y_line = 11,
.x_size = 1024,
.y_size = 600,
- .blen = 0x1,
- .threshold = 0x28,
- .voltage = 2800000, /* 2.8V */
.orient = MXT_DIAGONAL_COUNTER,
.irqflags = IRQF_TRIGGER_FALLING,
};
diff --git a/arch/arm/mach-exynos/mach-universal_c210.c b/arch/arm/mach-exynos/mach-universal_c210.c
index ebc9dd3..8de6e36 100644
--- a/arch/arm/mach-exynos/mach-universal_c210.c
+++ b/arch/arm/mach-exynos/mach-universal_c210.c
@@ -605,13 +605,8 @@ static struct i2c_board_info i2c5_devs[] __initdata = {
/* I2C3 (TSP) */
static struct mxt_platform_data qt602240_platform_data = {
- .x_line = 19,
- .y_line = 11,
.x_size = 800,
.y_size = 480,
- .blen = 0x11,
- .threshold = 0x28,
- .voltage = 2800000, /* 2.8V */
.orient = MXT_DIAGONAL,
.irqflags = IRQF_TRIGGER_FALLING,
};
diff --git a/arch/arm/mach-s5pv210/mach-goni.c b/arch/arm/mach-s5pv210/mach-goni.c
index 55e1dba..2743751 100644
--- a/arch/arm/mach-s5pv210/mach-goni.c
+++ b/arch/arm/mach-s5pv210/mach-goni.c
@@ -240,13 +240,8 @@ static void __init goni_radio_init(void)
/* TSP */
static struct mxt_platform_data qt602240_platform_data = {
- .x_line = 17,
- .y_line = 11,
.x_size = 800,
.y_size = 480,
- .blen = 0x21,
- .threshold = 0x28,
- .voltage = 2800000, /* 2.8V */
.orient = MXT_DIAGONAL,
.irqflags = IRQF_TRIGGER_FALLING,
};
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 9e734dc..fa294d1 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -737,54 +737,6 @@ static int mxt_make_highchg(struct mxt_data *data)
return 0;
}
-static void mxt_handle_pdata(struct mxt_data *data)
-{
- const struct mxt_platform_data *pdata = data->pdata;
- u8 voltage;
-
- /* Set touchscreen lines */
- mxt_write_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_XSIZE,
- pdata->x_line);
- mxt_write_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_YSIZE,
- pdata->y_line);
-
- /* Set touchscreen orient */
- mxt_write_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_ORIENT,
- pdata->orient);
-
- /* Set touchscreen burst length */
- mxt_write_object(data, MXT_TOUCH_MULTI_T9,
- MXT_TOUCH_BLEN, pdata->blen);
-
- /* Set touchscreen threshold */
- mxt_write_object(data, MXT_TOUCH_MULTI_T9,
- MXT_TOUCH_TCHTHR, pdata->threshold);
-
- /* Set touchscreen resolution */
- mxt_write_object(data, MXT_TOUCH_MULTI_T9,
- MXT_TOUCH_XRANGE_LSB, (pdata->x_size - 1) & 0xff);
- mxt_write_object(data, MXT_TOUCH_MULTI_T9,
- MXT_TOUCH_XRANGE_MSB, (pdata->x_size - 1) >> 8);
- mxt_write_object(data, MXT_TOUCH_MULTI_T9,
- MXT_TOUCH_YRANGE_LSB, (pdata->y_size - 1) & 0xff);
- mxt_write_object(data, MXT_TOUCH_MULTI_T9,
- MXT_TOUCH_YRANGE_MSB, (pdata->y_size - 1) >> 8);
-
- /* Set touchscreen voltage */
- if (pdata->voltage) {
- if (pdata->voltage < MXT_VOLTAGE_DEFAULT) {
- voltage = (MXT_VOLTAGE_DEFAULT - pdata->voltage) /
- MXT_VOLTAGE_STEP;
- voltage = 0xff - voltage + 1;
- } else
- voltage = (pdata->voltage - MXT_VOLTAGE_DEFAULT) /
- MXT_VOLTAGE_STEP;
-
- mxt_write_object(data, MXT_SPT_CTECONFIG_T28,
- MXT_CTE_VOLTAGE, voltage);
- }
-}
-
static int mxt_get_info(struct mxt_data *data)
{
struct i2c_client *client = data->client;
@@ -903,8 +855,6 @@ static int mxt_initialize(struct mxt_data *data)
return error;
}
- mxt_handle_pdata(data);
-
error = mxt_t6_command(data, MXT_COMMAND_BACKUPNV, MXT_BACKUP_VALUE, false);
if (!error)
mxt_soft_reset(data, MXT_RESET_VALUE);
diff --git a/include/linux/i2c/atmel_mxt_ts.h b/include/linux/i2c/atmel_mxt_ts.h
index ef59c22..6a879a6 100644
--- a/include/linux/i2c/atmel_mxt_ts.h
+++ b/include/linux/i2c/atmel_mxt_ts.h
@@ -30,14 +30,10 @@ struct mxt_platform_data {
const u8 *config;
size_t config_length;
- unsigned int x_line;
- unsigned int y_line;
unsigned int x_size;
unsigned int y_size;
- unsigned int blen;
- unsigned int threshold;
- unsigned int voltage;
unsigned char orient;
+
unsigned long irqflags;
u8(*read_chg) (void);
};
--
1.7.10.4
--
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