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staging: ste_rmi4: kill platform_data hack 

There is only one instance of the platform data for synaptics_i2c_rmi4
in the mainline kernel, so there is no point of pretending its
variable here. The only member that has a dependency on the platform
is actually the interrupt number, and there is a field in the
i2c_client structure that gets initialized from the board info,
so we can trivially move the board_into into the platform without
knowledge of the platform_data structure.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Arnd Bergmann 2013-03-21 22:51:10 +01:00 committed by Linus Walleij
parent ab0fc6ce48
commit e5a1f68203
5 changed files with 23 additions and 48 deletions
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7
arch/arm/mach-ux500/board-mop500-u8500uib.c
View File

@ -16,8 +16,11 @@
#include "board-mop500.h"
/* Dummy data that can be overridden by staging driver */
struct i2c_board_info __initdata __weak mop500_i2c3_devices_u8500[] = {
static struct i2c_board_info __initdata mop500_i2c3_devices_u8500[] = {
{
I2C_BOARD_INFO("synaptics_rmi4_i2c", 0x4B),
.irq = NOMADIK_GPIO_TO_IRQ(84),
},
};
/*

1
drivers/staging/ste_rmi4/Makefile
View File

@ -2,4 +2,3 @@
# Makefile for the RMI4 touchscreen driver.
#
obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_I2C_RMI4) += synaptics_i2c_rmi4.o
obj-$(CONFIG_MACH_MOP500) += board-mop500-u8500uib-rmi4.o

31
drivers/staging/ste_rmi4/board-mop500-u8500uib-rmi4.c
View File

@ -1,31 +0,0 @@
/*
* Some platform data for the RMI4 touchscreen that will override the __weak
* platform data in the Ux500 machine if this driver is activated.
*/
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <mach/irqs.h>
#include "synaptics_i2c_rmi4.h"
/*
* Synaptics RMI4 touchscreen interface on the U8500 UIB
*/
/*
* Descriptor structure.
* Describes the number of i2c devices on the bus that speak RMI.
*/
static struct synaptics_rmi4_platform_data rmi4_i2c_dev_platformdata = {
.irq_number = NOMADIK_GPIO_TO_IRQ(84),
.irq_type = (IRQF_TRIGGER_FALLING | IRQF_SHARED),
.x_flip = false,
.y_flip = true,
};
struct i2c_board_info __initdata mop500_i2c3_devices_u8500[] = {
{
I2C_BOARD_INFO("synaptics_rmi4_i2c", 0x4B),
.platform_data = &rmi4_i2c_dev_platformdata,
},
};

31
drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c
View File

@ -864,6 +864,16 @@ static int synaptics_rmi4_i2c_query_device(struct synaptics_rmi4_data *pdata)
return 0;
}
/*
* Descriptor structure.
* Describes the number of i2c devices on the bus that speak RMI.
*/
static struct synaptics_rmi4_platform_data synaptics_rmi4_platformdata = {
.irq_type = (IRQF_TRIGGER_FALLING | IRQF_SHARED),
.x_flip = false,
.y_flip = true,
};
/**
* synaptics_rmi4_probe() - Initialze the i2c-client touchscreen driver
* @i2c: i2c client structure pointer
@ -890,10 +900,8 @@ static int synaptics_rmi4_probe
return -EIO;
}
if (!platformdata) {
dev_err(&client->dev, "%s: no platform data\n", __func__);
return -EINVAL;
}
if (!platformdata)
platformdata = &synaptics_rmi4_platformdata;
/* Allocate and initialize the instance data for this client */
rmi4_data = kcalloc(2, sizeof(struct synaptics_rmi4_data),
@ -977,13 +985,13 @@ static int synaptics_rmi4_probe
synaptics_rmi4_i2c_block_read(rmi4_data,
rmi4_data->fn01_data_base_addr + 1, intr_status,
rmi4_data->number_of_interrupt_register);
retval = request_threaded_irq(platformdata->irq_number, NULL,
retval = request_threaded_irq(client->irq, NULL,
synaptics_rmi4_irq,
platformdata->irq_type,
DRIVER_NAME, rmi4_data);
if (retval) {
dev_err(&client->dev, "%s:Unable to get attn irq %d\n",
__func__, platformdata->irq_number);
__func__, client->irq);
goto err_query_dev;
}
@ -996,7 +1004,7 @@ static int synaptics_rmi4_probe
return retval;
err_free_irq:
free_irq(platformdata->irq_number, rmi4_data);
free_irq(client->irq, rmi4_data);
err_query_dev:
regulator_disable(rmi4_data->regulator);
err_regulator_enable:
@ -1019,11 +1027,10 @@ err_input:
static int synaptics_rmi4_remove(struct i2c_client *client)
{
struct synaptics_rmi4_data *rmi4_data = i2c_get_clientdata(client);
const struct synaptics_rmi4_platform_data *pdata = rmi4_data->board;
rmi4_data->touch_stopped = true;
wake_up(&rmi4_data->wait);
free_irq(pdata->irq_number, rmi4_data);
free_irq(client->irq, rmi4_data);
input_unregister_device(rmi4_data->input_dev);
regulator_disable(rmi4_data->regulator);
regulator_put(rmi4_data->regulator);
@ -1046,10 +1053,9 @@ static int synaptics_rmi4_suspend(struct device *dev)
int retval;
unsigned char intr_status;
struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev);
const struct synaptics_rmi4_platform_data *pdata = rmi4_data->board;
rmi4_data->touch_stopped = true;
disable_irq(pdata->irq_number);
disable_irq(rmi4_data->i2c_client->irq);
retval = synaptics_rmi4_i2c_block_read(rmi4_data,
rmi4_data->fn01_data_base_addr + 1,
@ -1080,11 +1086,10 @@ static int synaptics_rmi4_resume(struct device *dev)
int retval;
unsigned char intr_status;
struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev);
const struct synaptics_rmi4_platform_data *pdata = rmi4_data->board;
regulator_enable(rmi4_data->regulator);
enable_irq(pdata->irq_number);
enable_irq(rmi4_data->i2c_client->irq);
rmi4_data->touch_stopped = false;
retval = synaptics_rmi4_i2c_block_read(rmi4_data,

1
drivers/staging/ste_rmi4/synaptics_i2c_rmi4.h
View File

@ -38,7 +38,6 @@
* This structure gives platform data for rmi4.
*/
struct synaptics_rmi4_platform_data {
int irq_number;
int irq_type;
bool x_flip;
bool y_flip;