ARM: OMAP: Add bitbank SPI driver for Innovator 1510 touchscreen (c15e5d10) · Commits · 戴 / test

arch/arm/mach-omap1/board-innovator.c

+36 −0

Original line number	Diff line number	Diff line
		@@ -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

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