Re: [PATCH 3/3] AM3517: Add support for TSC2004 driver

[Tony Lindgren <tony@atomide.com>]

Hi,

* hvaibhav@ti.com <hvaibhav@ti.com> [091119 06:46]:
> From: Vaibhav Hiremath <hvaibhav@ti.com>
> 
> 
> Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
> ---
>  arch/arm/mach-omap2/board-am3517evm.c |   62 +++++++++++++++++++++++++++++++++
>  1 files changed, 62 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/arm/mach-omap2/board-am3517evm.c b/arch/arm/mach-omap2/board-am3517evm.c
> index 415a13d..ae47b51 100644
> --- a/arch/arm/mach-omap2/board-am3517evm.c
> +++ b/arch/arm/mach-omap2/board-am3517evm.c
> @@ -20,6 +20,8 @@
>  #include <linux/init.h>
>  #include <linux/platform_device.h>
>  #include <linux/gpio.h>
> +#include <linux/irq.h>
> +#include <linux/i2c/tsc2004.h>
>  
>  #include <mach/hardware.h>
>  #include <asm/mach-types.h>
> @@ -27,10 +29,64 @@
>  #include <asm/mach/map.h>
>  
>  #include <plat/board.h>
> +#include <plat/mux.h>
>  #include <plat/common.h>
>  #include <plat/usb.h>
>  
>  /*
> + * TSC 2004 Support
> + */
> +#define	GPIO_TSC2004_IRQ	65
> +
> +static int tsc2004_init_irq(void)
> +{
> +	int ret = 0;
> +
> +	ret = gpio_request(GPIO_TSC2004_IRQ, "tsc2004-irq");
> +	if (ret < 0) {
> +		printk(KERN_WARNING "failed to request GPIO#%d: %d\n",
> +				GPIO_TSC2004_IRQ, ret);
> +		return ret;
> +	}
> +
> +	if (gpio_direction_input(GPIO_TSC2004_IRQ)) {
> +		printk(KERN_WARNING "GPIO#%d cannot be configured as "
> +				"input\n", GPIO_TSC2004_IRQ);
> +		return -ENXIO;
> +	}
> +
> +	omap_set_gpio_debounce(GPIO_TSC2004_IRQ, 1);
> +	omap_set_gpio_debounce_time(GPIO_TSC2004_IRQ, 0xa);
> +	return ret;
> +}
> +
> +static void tsc2004_exit_irq(void)
> +{
> +	gpio_free(GPIO_TSC2004_IRQ);
> +}
> +
> +static int tsc2004_get_irq_level(void)
> +{
> +	return gpio_get_value(GPIO_TSC2004_IRQ) ? 0 : 1;
> +}
> +
> +struct tsc2004_platform_data am3517evm_tsc2004data = {
> +	.model = 2004,
> +	.x_plate_ohms = 180,
> +	.get_pendown_state = tsc2004_get_irq_level,
> +	.init_platform_hw = tsc2004_init_irq,
> +	.exit_platform_hw = tsc2004_exit_irq,
> +};
> +
> +static struct i2c_board_info __initdata am3517evm_tsc_i2c_boardinfo[] = {
> +	{
> +		I2C_BOARD_INFO("tsc2004", 0x4B),
> +		.type		= "tsc2004",
> +		.platform_data	= &am3517evm_tsc2004data,
> +	},
> +};
> +
> +/*
>   * Board initialization
>   */
>  static struct omap_board_config_kernel am3517_evm_config[] __initdata = {
> @@ -67,6 +123,12 @@ static void __init am3517_evm_init(void)
>  
>  	omap_serial_init();
>  	usb_ehci_init(&ehci_pdata);
> +
> +	/* TSC 2004 */
> +	omap_cfg_reg(U1_34XX_GPIO65);
> +	am3517evm_tsc_i2c_boardinfo[0].irq = gpio_to_irq(GPIO_TSC2004_IRQ);
> +	i2c_register_board_info(1, am3517evm_tsc_i2c_boardinfo,
> +				ARRAY_SIZE(am3517evm_tsc_i2c_boardinfo));
>  }
>  
>  static void __init am3517_evm_map_io(void)

Can you please leave out the omap_cfg_reg call for new mux registers
from this patch? This way it will still compile and we can patch
in the muxing later on.

Regards,

Tony