diff options
| author | David Brownell <dbrownell@users.sourceforge.net> | 2006-06-26 16:16:09 -0700 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2006-06-26 16:16:09 -0700 |
| commit | c15e5d10b160ca0fe71f5865c771bf4ad0e7ed85 (patch) | |
| tree | 5eca5f4cab3c63025656824e468f4ea0e06db854 | |
| parent | 284185c73d3156f4438d5599ae69793b44d825ab (diff) | |
ARM: OMAP: Add bitbank SPI driver for Innovator 1510 touchscreen
Add bitbang SPI driver for Innovator 1510 touchscreen, using the new
framework. Compile-tested only.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
| -rw-r--r-- | arch/arm/mach-omap1/board-innovator.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/arm/mach-omap1/board-innovator.c b/arch/arm/mach-omap1/board-innovator.c index 43260aa20f86..4cbc62db5b5d 100644 --- a/arch/arm/mach-omap1/board-innovator.c +++ b/arch/arm/mach-omap1/board-innovator.c @@ -177,6 +177,10 @@ static struct platform_device innovator_kp_device = { #ifdef CONFIG_ARCH_OMAP15XX +#include <linux/spi/spi.h> +#include <linux/spi/ads7846.h> + + /* Only FPGA needs to be mapped here. All others are done with ioremap */ static struct map_desc innovator1510_io_desc[] __initdata = { { @@ -212,14 +216,44 @@ static struct platform_device innovator1510_lcd_device = { .id = -1, }; +static struct platform_device innovator1510_spi_device = { + .name = "spi_inn1510", + .id = -1, +}; + static struct platform_device *innovator1510_devices[] __initdata = { &innovator_flash_device, &innovator1510_smc91x_device, &innovator_mcbsp1_device, &innovator_kp_device, &innovator1510_lcd_device, + &innovator1510_spi_device, }; +static int innovator_get_pendown_state(void) +{ + return !(fpga_read(OMAP1510_FPGA_TOUCHSCREEN) & (1 << 5)); +} + +static const struct ads7846_platform_data innovator1510_ts_info = { + .model = 7846, + .vref_delay_usecs = 100, /* internal, no capacitor */ + .x_plate_ohms = 419, + .y_plate_ohms = 486, + .get_pendown_state = innovator_get_pendown_state, +}; + +static struct spi_board_info __initdata innovator1510_boardinfo[] = { { + /* FPGA (bus "10") CS0 has an ads7846e */ + .modalias = "ads7846", + .platform_data = &innovator1510_ts_info, + .irq = OMAP1510_INT_FPGA_TS, + .max_speed_hz = 120000 /* max sample rate at 3V */ + * 26 /* command + data + overhead */, + .bus_num = 10, + .chip_select = 0, +} }; + #endif /* CONFIG_ARCH_OMAP15XX */ #ifdef CONFIG_ARCH_OMAP16XX @@ -350,6 +384,8 @@ static void __init innovator_init(void) #ifdef CONFIG_ARCH_OMAP15XX if (cpu_is_omap1510()) { platform_add_devices(innovator1510_devices, ARRAY_SIZE(innovator1510_devices)); + spi_register_board_info(innovator1510_boardinfo, + ARRAY_SIZE(innovator1510_boardinfo)); } #endif #ifdef CONFIG_ARCH_OMAP16XX |