[ARM] 4765/1: [AT91] AT91CAP9A-DK board support

Add support for the Atmel AT91CAP9A-DK Evaluation Kit board.

Signed-off-by: Stelian Pop <stelian@popies.net>
Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 359 insertions, 0 deletions

diff --git a/arch/arm/mach-at91/board-cap9adk.c b/arch/arm/mach-at91/board-cap9adk.c
new file mode 100644
index 00000000000..18543713154
--- /dev/null
+++ b/arch/arm/mach-at91/board-cap9adk.c
@@ -0,0 +1,359 @@
+/*
+ * linux/arch/arm/mach-at91/board-cap9adk.c
+ *
+ *  Copyright (C) 2007 Stelian Pop <stelian.pop@leadtechdesign.com>
+ *  Copyright (C) 2007 Lead Tech Design <www.leadtechdesign.com>
+ *  Copyright (C) 2005 SAN People
+ *  Copyright (C) 2007 Atmel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/ads7846.h>
+#include <linux/fb.h>
+#include <linux/mtd/physmap.h>
+
+#include <video/atmel_lcdc.h>
+
+#include <asm/hardware.h>
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <asm/arch/board.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/at91cap9_matrix.h>
+#include <asm/arch/at91sam926x_mc.h>
+
+#include "generic.h"
+
+
+static void __init cap9adk_map_io(void)
+{
+	/* Initialize processor: 12 MHz crystal */
+	at91cap9_initialize(12000000);
+
+	/* Setup the LEDs: USER1 and USER2 LED for cpu/timer... */
+	at91_init_leds(AT91_PIN_PA10, AT91_PIN_PA11);
+	/* ... POWER LED always on */
+	at91_set_gpio_output(AT91_PIN_PC29, 1);
+
+	/* Setup the serial ports and console */
+	at91_register_uart(0, 0, 0);		/* DBGU = ttyS0 */
+	at91_set_serial_console(0);
+}
+
+static void __init cap9adk_init_irq(void)
+{
+	at91cap9_init_interrupts(NULL);
+}
+
+
+/*
+ * USB Host port
+ */
+static struct at91_usbh_data __initdata cap9adk_usbh_data = {
+	.ports		= 2,
+};
+
+
+/*
+ * ADS7846 Touchscreen
+ */
+#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
+static int ads7843_pendown_state(void)
+{
+	return !at91_get_gpio_value(AT91_PIN_PC4);	/* Touchscreen PENIRQ */
+}
+
+static struct ads7846_platform_data ads_info = {
+	.model			= 7843,
+	.x_min			= 150,
+	.x_max			= 3830,
+	.y_min			= 190,
+	.y_max			= 3830,
+	.vref_delay_usecs	= 100,
+	.x_plate_ohms		= 450,
+	.y_plate_ohms		= 250,
+	.pressure_max		= 15000,
+	.debounce_max		= 1,
+	.debounce_rep		= 0,
+	.debounce_tol		= (~0),
+	.get_pendown_state	= ads7843_pendown_state,
+};
+
+static void __init cap9adk_add_device_ts(void)
+{
+	at91_set_gpio_input(AT91_PIN_PC4, 1);	/* Touchscreen PENIRQ */
+	at91_set_gpio_input(AT91_PIN_PC5, 1);	/* Touchscreen BUSY */
+}
+#else
+static void __init cap9adk_add_device_ts(void) {}
+#endif
+
+
+/*
+ * SPI devices.
+ */
+static struct spi_board_info cap9adk_spi_devices[] = {
+#if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
+	{	/* DataFlash card */
+		.modalias	= "mtd_dataflash",
+		.chip_select	= 0,
+		.max_speed_hz	= 15 * 1000 * 1000,
+		.bus_num	= 0,
+	},
+#endif
+#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
+	{
+		.modalias	= "ads7846",
+		.chip_select	= 3,		/* can be 2 or 3, depending on J2 jumper */
+		.max_speed_hz	= 125000 * 26,	/* (max sample rate @ 3V) * (cmd + data + overhead) */
+		.bus_num	= 0,
+		.platform_data	= &ads_info,
+		.irq		= AT91_PIN_PC4,
+	},
+#endif
+};
+
+
+/*
+ * MCI (SD/MMC)
+ */
+static struct at91_mmc_data __initdata cap9adk_mmc_data = {
+	.wire4		= 1,
+//	.det_pin	= ... not connected
+//	.wp_pin		= ... not connected
+//	.vcc_pin	= ... not connected
+};
+
+
+/*
+ * MACB Ethernet device
+ */
+static struct at91_eth_data __initdata cap9adk_macb_data = {
+	.is_rmii	= 1,
+};
+
+
+/*
+ * NAND flash
+ */
+static struct mtd_partition __initdata cap9adk_nand_partitions[] = {
+	{
+		.name	= "NAND partition",
+		.offset	= 0,
+		.size	= MTDPART_SIZ_FULL,
+	},
+};
+
+static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
+{
+	*num_partitions = ARRAY_SIZE(cap9adk_nand_partitions);
+	return cap9adk_nand_partitions;
+}
+
+static struct at91_nand_data __initdata cap9adk_nand_data = {
+	.ale		= 21,
+	.cle		= 22,
+//	.det_pin	= ... not connected
+//	.rdy_pin	= ... not connected
+	.enable_pin	= AT91_PIN_PD15,
+	.partition_info	= nand_partitions,
+#if defined(CONFIG_MTD_NAND_AT91_BUSWIDTH_16)
+	.bus_width_16	= 1,
+#else
+	.bus_width_16	= 0,
+#endif
+};
+
+
+/*
+ * NOR flash
+ */
+static struct mtd_partition cap9adk_nor_partitions[] = {
+	{
+		.name		= "NOR partition",
+		.offset		= 0,
+		.size		= MTDPART_SIZ_FULL,
+	},
+};
+
+static struct physmap_flash_data cap9adk_nor_data = {
+	.width		= 2,
+	.parts		= cap9adk_nor_partitions,
+	.nr_parts	= ARRAY_SIZE(cap9adk_nor_partitions),
+};
+
+#define NOR_BASE	AT91_CHIPSELECT_0
+#define NOR_SIZE	0x800000
+
+static struct resource nor_flash_resources[] = {
+	{
+		.start	= NOR_BASE,
+		.end	= NOR_BASE + NOR_SIZE - 1,
+		.flags	= IORESOURCE_MEM,
+	}
+};
+
+static struct platform_device cap9adk_nor_flash = {
+	.name		= "physmap-flash",
+	.id		= 0,
+	.dev		= {
+				.platform_data	= &cap9adk_nor_data,
+	},
+	.resource	= nor_flash_resources,
+	.num_resources	= ARRAY_SIZE(nor_flash_resources),
+};
+
+static __init void cap9adk_add_device_nor(void)
+{
+	unsigned long csa;
+
+	csa = at91_sys_read(AT91_MATRIX_EBICSA);
+	at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
+
+	/* set the bus interface characteristics */
+	at91_sys_write(AT91_SMC_SETUP(0), AT91_SMC_NWESETUP_(4) | AT91_SMC_NCS_WRSETUP_(2)
+			| AT91_SMC_NRDSETUP_(4) | AT91_SMC_NCS_RDSETUP_(2));
+
+	at91_sys_write(AT91_SMC_PULSE(0), AT91_SMC_NWEPULSE_(8) | AT91_SMC_NCS_WRPULSE_(10)
+			| AT91_SMC_NRDPULSE_(8) | AT91_SMC_NCS_RDPULSE_(10));
+
+	at91_sys_write(AT91_SMC_CYCLE(0), AT91_SMC_NWECYCLE_(16) | AT91_SMC_NRDCYCLE_(16));
+
+	at91_sys_write(AT91_SMC_MODE(0), AT91_SMC_READMODE | AT91_SMC_WRITEMODE
+			| AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE
+			| AT91_SMC_DBW_16 | AT91_SMC_TDF_(1));
+
+	platform_device_register(&cap9adk_nor_flash);
+}
+
+
+/*
+ * LCD Controller
+ */
+#if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
+static struct fb_videomode at91_tft_vga_modes[] = {
+	{
+	        .name           = "TX09D50VM1CCA @ 60",
+		.refresh	= 60,
+		.xres		= 240,		.yres		= 320,
+		.pixclock	= KHZ2PICOS(4965),
+
+		.left_margin	= 1,		.right_margin	= 33,
+		.upper_margin	= 1,		.lower_margin	= 0,
+		.hsync_len	= 5,		.vsync_len	= 1,
+
+		.sync		= FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+		.vmode		= FB_VMODE_NONINTERLACED,
+	},
+};
+
+static struct fb_monspecs at91fb_default_monspecs = {
+	.manufacturer	= "HIT",
+	.monitor        = "TX09D70VM1CCA",
+
+	.modedb		= at91_tft_vga_modes,
+	.modedb_len	= ARRAY_SIZE(at91_tft_vga_modes),
+	.hfmin		= 15000,
+	.hfmax		= 64000,
+	.vfmin		= 50,
+	.vfmax		= 150,
+};
+
+#define AT91CAP9_DEFAULT_LCDCON2 	(ATMEL_LCDC_MEMOR_LITTLE \
+					| ATMEL_LCDC_DISTYPE_TFT    \
+					| ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
+
+static void at91_lcdc_power_control(int on)
+{
+	if (on)
+		at91_set_gpio_value(AT91_PIN_PC0, 0);	/* power up */
+	else
+		at91_set_gpio_value(AT91_PIN_PC0, 1);	/* power down */
+}
+
+/* Driver datas */
+static struct atmel_lcdfb_info __initdata cap9adk_lcdc_data = {
+	.default_bpp			= 16,
+	.default_dmacon			= ATMEL_LCDC_DMAEN,
+	.default_lcdcon2		= AT91CAP9_DEFAULT_LCDCON2,
+	.default_monspecs		= &at91fb_default_monspecs,
+	.atmel_lcdfb_power_control	= at91_lcdc_power_control,
+	.guard_time			= 1,
+};
+
+#else
+static struct atmel_lcdfb_info __initdata cap9adk_lcdc_data;
+#endif
+
+
+/*
+ * AC97
+ */
+static struct atmel_ac97_data cap9adk_ac97_data = {
+//	.reset_pin	= ... not connected
+};
+
+
+static void __init cap9adk_board_init(void)
+{
+	/* Serial */
+	at91_add_device_serial();
+	/* USB Host */
+	set_irq_type(AT91CAP9_ID_UHP, IRQT_HIGH);
+	at91_add_device_usbh(&cap9adk_usbh_data);
+	/* SPI */
+	at91_add_device_spi(cap9adk_spi_devices, ARRAY_SIZE(cap9adk_spi_devices));
+	/* Touchscreen */
+	cap9adk_add_device_ts();
+	/* MMC */
+	at91_add_device_mmc(1, &cap9adk_mmc_data);
+	/* Ethernet */
+	at91_add_device_eth(&cap9adk_macb_data);
+	/* NAND */
+	at91_add_device_nand(&cap9adk_nand_data);
+	/* NOR Flash */
+	cap9adk_add_device_nor();
+	/* I2C */
+	at91_add_device_i2c(NULL, 0);
+	/* LCD Controller */
+	set_irq_type(AT91CAP9_ID_LCDC, IRQT_HIGH);
+	at91_add_device_lcdc(&cap9adk_lcdc_data);
+	/* AC97 */
+	at91_add_device_ac97(&cap9adk_ac97_data);
+}
+
+MACHINE_START(AT91CAP9ADK, "Atmel AT91CAP9A-DK")
+	/* Maintainer: Stelian Pop <stelian.pop@leadtechdesign.com> */
+	.phys_io	= AT91_BASE_SYS,
+	.io_pg_offst	= (AT91_VA_BASE_SYS >> 18) & 0xfffc,
+	.boot_params	= AT91_SDRAM_BASE + 0x100,
+	.timer		= &at91sam926x_timer,
+	.map_io		= cap9adk_map_io,
+	.init_irq	= cap9adk_init_irq,
+	.init_machine	= cap9adk_board_init,
+MACHINE_END