forked from Minki/linux
86640cae60
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>
360 lines
8.7 KiB
C
360 lines
8.7 KiB
C
/*
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* linux/arch/arm/mach-at91/board-cap9adk.c
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*
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* Copyright (C) 2007 Stelian Pop <stelian.pop@leadtechdesign.com>
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* Copyright (C) 2007 Lead Tech Design <www.leadtechdesign.com>
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* Copyright (C) 2005 SAN People
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* Copyright (C) 2007 Atmel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/ads7846.h>
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#include <linux/fb.h>
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#include <linux/mtd/physmap.h>
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#include <video/atmel_lcdc.h>
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#include <asm/hardware.h>
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#include <asm/setup.h>
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#include <asm/mach-types.h>
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#include <asm/irq.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <asm/arch/board.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/at91cap9_matrix.h>
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#include <asm/arch/at91sam926x_mc.h>
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#include "generic.h"
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static void __init cap9adk_map_io(void)
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{
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/* Initialize processor: 12 MHz crystal */
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at91cap9_initialize(12000000);
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/* Setup the LEDs: USER1 and USER2 LED for cpu/timer... */
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at91_init_leds(AT91_PIN_PA10, AT91_PIN_PA11);
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/* ... POWER LED always on */
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at91_set_gpio_output(AT91_PIN_PC29, 1);
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/* Setup the serial ports and console */
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at91_register_uart(0, 0, 0); /* DBGU = ttyS0 */
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at91_set_serial_console(0);
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}
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static void __init cap9adk_init_irq(void)
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{
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at91cap9_init_interrupts(NULL);
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}
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/*
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* USB Host port
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*/
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static struct at91_usbh_data __initdata cap9adk_usbh_data = {
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.ports = 2,
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};
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/*
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* ADS7846 Touchscreen
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*/
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#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
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static int ads7843_pendown_state(void)
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{
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return !at91_get_gpio_value(AT91_PIN_PC4); /* Touchscreen PENIRQ */
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}
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static struct ads7846_platform_data ads_info = {
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.model = 7843,
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.x_min = 150,
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.x_max = 3830,
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.y_min = 190,
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.y_max = 3830,
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.vref_delay_usecs = 100,
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.x_plate_ohms = 450,
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.y_plate_ohms = 250,
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.pressure_max = 15000,
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.debounce_max = 1,
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.debounce_rep = 0,
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.debounce_tol = (~0),
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.get_pendown_state = ads7843_pendown_state,
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};
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static void __init cap9adk_add_device_ts(void)
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{
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at91_set_gpio_input(AT91_PIN_PC4, 1); /* Touchscreen PENIRQ */
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at91_set_gpio_input(AT91_PIN_PC5, 1); /* Touchscreen BUSY */
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}
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#else
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static void __init cap9adk_add_device_ts(void) {}
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#endif
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/*
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* SPI devices.
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*/
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static struct spi_board_info cap9adk_spi_devices[] = {
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#if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
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{ /* DataFlash card */
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.modalias = "mtd_dataflash",
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.chip_select = 0,
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.max_speed_hz = 15 * 1000 * 1000,
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.bus_num = 0,
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},
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#endif
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#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
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{
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.modalias = "ads7846",
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.chip_select = 3, /* can be 2 or 3, depending on J2 jumper */
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.max_speed_hz = 125000 * 26, /* (max sample rate @ 3V) * (cmd + data + overhead) */
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.bus_num = 0,
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.platform_data = &ads_info,
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.irq = AT91_PIN_PC4,
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},
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#endif
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};
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/*
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* MCI (SD/MMC)
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*/
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static struct at91_mmc_data __initdata cap9adk_mmc_data = {
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.wire4 = 1,
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// .det_pin = ... not connected
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// .wp_pin = ... not connected
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// .vcc_pin = ... not connected
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};
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/*
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* MACB Ethernet device
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*/
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static struct at91_eth_data __initdata cap9adk_macb_data = {
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.is_rmii = 1,
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};
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/*
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* NAND flash
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*/
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static struct mtd_partition __initdata cap9adk_nand_partitions[] = {
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{
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.name = "NAND partition",
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.offset = 0,
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.size = MTDPART_SIZ_FULL,
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},
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};
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static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
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{
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*num_partitions = ARRAY_SIZE(cap9adk_nand_partitions);
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return cap9adk_nand_partitions;
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}
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static struct at91_nand_data __initdata cap9adk_nand_data = {
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.ale = 21,
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.cle = 22,
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// .det_pin = ... not connected
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// .rdy_pin = ... not connected
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.enable_pin = AT91_PIN_PD15,
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.partition_info = nand_partitions,
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#if defined(CONFIG_MTD_NAND_AT91_BUSWIDTH_16)
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.bus_width_16 = 1,
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#else
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.bus_width_16 = 0,
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#endif
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};
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/*
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* NOR flash
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*/
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static struct mtd_partition cap9adk_nor_partitions[] = {
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{
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.name = "NOR partition",
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.offset = 0,
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.size = MTDPART_SIZ_FULL,
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},
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};
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static struct physmap_flash_data cap9adk_nor_data = {
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.width = 2,
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.parts = cap9adk_nor_partitions,
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.nr_parts = ARRAY_SIZE(cap9adk_nor_partitions),
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};
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#define NOR_BASE AT91_CHIPSELECT_0
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#define NOR_SIZE 0x800000
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static struct resource nor_flash_resources[] = {
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{
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.start = NOR_BASE,
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.end = NOR_BASE + NOR_SIZE - 1,
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.flags = IORESOURCE_MEM,
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}
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};
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static struct platform_device cap9adk_nor_flash = {
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.name = "physmap-flash",
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.id = 0,
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.dev = {
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.platform_data = &cap9adk_nor_data,
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},
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.resource = nor_flash_resources,
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.num_resources = ARRAY_SIZE(nor_flash_resources),
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};
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static __init void cap9adk_add_device_nor(void)
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{
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unsigned long csa;
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csa = at91_sys_read(AT91_MATRIX_EBICSA);
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at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
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/* set the bus interface characteristics */
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at91_sys_write(AT91_SMC_SETUP(0), AT91_SMC_NWESETUP_(4) | AT91_SMC_NCS_WRSETUP_(2)
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| AT91_SMC_NRDSETUP_(4) | AT91_SMC_NCS_RDSETUP_(2));
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at91_sys_write(AT91_SMC_PULSE(0), AT91_SMC_NWEPULSE_(8) | AT91_SMC_NCS_WRPULSE_(10)
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| AT91_SMC_NRDPULSE_(8) | AT91_SMC_NCS_RDPULSE_(10));
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at91_sys_write(AT91_SMC_CYCLE(0), AT91_SMC_NWECYCLE_(16) | AT91_SMC_NRDCYCLE_(16));
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at91_sys_write(AT91_SMC_MODE(0), AT91_SMC_READMODE | AT91_SMC_WRITEMODE
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| AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE
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| AT91_SMC_DBW_16 | AT91_SMC_TDF_(1));
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platform_device_register(&cap9adk_nor_flash);
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}
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/*
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* LCD Controller
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*/
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#if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
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static struct fb_videomode at91_tft_vga_modes[] = {
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{
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.name = "TX09D50VM1CCA @ 60",
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.refresh = 60,
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.xres = 240, .yres = 320,
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.pixclock = KHZ2PICOS(4965),
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.left_margin = 1, .right_margin = 33,
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.upper_margin = 1, .lower_margin = 0,
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.hsync_len = 5, .vsync_len = 1,
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.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
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.vmode = FB_VMODE_NONINTERLACED,
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},
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};
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static struct fb_monspecs at91fb_default_monspecs = {
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.manufacturer = "HIT",
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.monitor = "TX09D70VM1CCA",
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.modedb = at91_tft_vga_modes,
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.modedb_len = ARRAY_SIZE(at91_tft_vga_modes),
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.hfmin = 15000,
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.hfmax = 64000,
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.vfmin = 50,
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.vfmax = 150,
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};
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#define AT91CAP9_DEFAULT_LCDCON2 (ATMEL_LCDC_MEMOR_LITTLE \
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| ATMEL_LCDC_DISTYPE_TFT \
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| ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
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static void at91_lcdc_power_control(int on)
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{
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if (on)
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at91_set_gpio_value(AT91_PIN_PC0, 0); /* power up */
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else
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at91_set_gpio_value(AT91_PIN_PC0, 1); /* power down */
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}
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/* Driver datas */
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static struct atmel_lcdfb_info __initdata cap9adk_lcdc_data = {
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.default_bpp = 16,
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.default_dmacon = ATMEL_LCDC_DMAEN,
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.default_lcdcon2 = AT91CAP9_DEFAULT_LCDCON2,
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.default_monspecs = &at91fb_default_monspecs,
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.atmel_lcdfb_power_control = at91_lcdc_power_control,
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.guard_time = 1,
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};
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#else
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static struct atmel_lcdfb_info __initdata cap9adk_lcdc_data;
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#endif
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/*
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* AC97
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*/
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static struct atmel_ac97_data cap9adk_ac97_data = {
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// .reset_pin = ... not connected
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};
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static void __init cap9adk_board_init(void)
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{
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/* Serial */
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at91_add_device_serial();
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/* USB Host */
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set_irq_type(AT91CAP9_ID_UHP, IRQT_HIGH);
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at91_add_device_usbh(&cap9adk_usbh_data);
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/* SPI */
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at91_add_device_spi(cap9adk_spi_devices, ARRAY_SIZE(cap9adk_spi_devices));
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/* Touchscreen */
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cap9adk_add_device_ts();
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/* MMC */
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at91_add_device_mmc(1, &cap9adk_mmc_data);
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/* Ethernet */
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at91_add_device_eth(&cap9adk_macb_data);
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/* NAND */
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at91_add_device_nand(&cap9adk_nand_data);
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/* NOR Flash */
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cap9adk_add_device_nor();
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/* I2C */
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at91_add_device_i2c(NULL, 0);
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/* LCD Controller */
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set_irq_type(AT91CAP9_ID_LCDC, IRQT_HIGH);
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at91_add_device_lcdc(&cap9adk_lcdc_data);
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/* AC97 */
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at91_add_device_ac97(&cap9adk_ac97_data);
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}
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MACHINE_START(AT91CAP9ADK, "Atmel AT91CAP9A-DK")
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/* Maintainer: Stelian Pop <stelian.pop@leadtechdesign.com> */
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.phys_io = AT91_BASE_SYS,
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.io_pg_offst = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
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.boot_params = AT91_SDRAM_BASE + 0x100,
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.timer = &at91sam926x_timer,
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.map_io = cap9adk_map_io,
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.init_irq = cap9adk_init_irq,
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.init_machine = cap9adk_board_init,
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MACHINE_END
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