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[ARM] 5260/1: [AT91] Touchscreen on AT91SAM9RL 

This patch adds initialization of the Touchscreen controller for the
AT91SAM9RL processor.

Signed-off-by: Justin Waters <justin.waters@timesys.com>
Signed-off-by: Dan Liang <dan.liang@atmel.com>
Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Andrew Victor 2008-09-18 19:45:35 +01:00 committed by Russell King
parent a7307bf225
commit f7647e63f3
4 changed files with 51 additions and 0 deletions
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1
arch/arm/configs/at91sam9rlek_defconfig
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@ -496,6 +496,7 @@ CONFIG_INPUT_TOUCHSCREEN=y
# CONFIG_TOUCHSCREEN_PENMOUNT is not set
# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set
# CONFIG_TOUCHSCREEN_TOUCHWIN is not set
CONFIG_TOUCHSCREEN_ATMEL_TSADCC=y
# CONFIG_TOUCHSCREEN_UCB1400 is not set
# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
# CONFIG_INPUT_MISC is not set

45
arch/arm/mach-at91/at91sam9rl_devices.c
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@ -526,6 +526,51 @@ static void __init at91_add_device_tc(void) { }
#endif
/* --------------------------------------------------------------------
* Touchscreen
* -------------------------------------------------------------------- */
#if defined(CONFIG_TOUCHSCREEN_ATMEL_TSADCC) || defined(CONFIG_TOUCHSCREEN_ATMEL_TSADCC_MODULE)
static u64 tsadcc_dmamask = DMA_BIT_MASK(32);
static struct resource tsadcc_resources[] = {
[0] = {
.start = AT91SAM9RL_BASE_TSC,
.end = AT91SAM9RL_BASE_TSC + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9RL_ID_TSC,
.end = AT91SAM9RL_ID_TSC,
.flags = IORESOURCE_IRQ,
}
};
static struct platform_device at91sam9rl_tsadcc_device = {
.name = "atmel_tsadcc",
.id = -1,
.dev = {
.dma_mask = &tsadcc_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
.resource = tsadcc_resources,
.num_resources = ARRAY_SIZE(tsadcc_resources),
};
void __init at91_add_device_tsadcc(void)
{
at91_set_A_periph(AT91_PIN_PA17, 0); /* AD0_XR */
at91_set_A_periph(AT91_PIN_PA18, 0); /* AD1_XL */
at91_set_A_periph(AT91_PIN_PA19, 0); /* AD2_YT */
at91_set_A_periph(AT91_PIN_PA20, 0); /* AD3_TB */
platform_device_register(&at91sam9rl_tsadcc_device);
}
#else
void __init at91_add_device_tsadcc(void) {}
#endif
/* --------------------------------------------------------------------
* RTC
* -------------------------------------------------------------------- */

2
arch/arm/mach-at91/board-sam9rlek.c
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@ -195,6 +195,8 @@ static void __init ek_board_init(void)
at91_add_device_mmc(0, &ek_mmc_data);
/* LCD Controller */
at91_add_device_lcdc(&ek_lcdc_data);
/* Touch Screen Controller */
at91_add_device_tsadcc();
}
MACHINE_START(AT91SAM9RLEK, "Atmel AT91SAM9RL-EK")

3
arch/arm/mach-at91/include/mach/board.h
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@ -172,6 +172,9 @@ extern void __init at91_add_device_ac97(struct atmel_ac97_data *data);
/* ISI */
extern void __init at91_add_device_isi(void);
/* Touchscreen Controller */
extern void __init at91_add_device_tsadcc(void);
/* LEDs */
extern void __init at91_init_leds(u8 cpu_led, u8 timer_led);
extern void __init at91_gpio_leds(struct gpio_led *leds, int nr);