994c84ea52
This adds generic support for the "debug board" LEDs used by most of TI's OMAP reference boards, and board-specific support for the H4. It's derived from the not-as-generic stuff used by OMAP1 H2/H3/P2. Those should be able to switch easily to this version, and clean up some of the omap1-specific code. In addition to H4 support, one key improvement is supporting not just the "old" ARM debug LED API (with timer and idle LEDs, plus four that can be handy for kernel debugging), but it also supports the "new" generic LED API (most useful for usermode stuff IMO). Either or both APIs can be enabled. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
384 lines
8.7 KiB
C
384 lines
8.7 KiB
C
/*
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* linux/arch/arm/mach-omap2/board-h4.c
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*
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* Copyright (C) 2005 Nokia Corporation
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* Author: Paul Mundt <paul.mundt@nokia.com>
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*
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* Modified from mach-omap/omap1/board-generic.c
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/delay.h>
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#include <linux/workqueue.h>
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#include <linux/input.h>
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#include <asm/hardware.h>
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#include <asm/mach-types.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/flash.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/gpioexpander.h>
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#include <asm/arch/mux.h>
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#include <asm/arch/usb.h>
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#include <asm/arch/irda.h>
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#include <asm/arch/board.h>
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#include <asm/arch/common.h>
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#include <asm/arch/keypad.h>
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#include <asm/arch/menelaus.h>
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#include <asm/arch/dma.h>
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#include "prcm-regs.h"
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#include <asm/io.h>
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static unsigned int row_gpios[6] = { 88, 89, 124, 11, 6, 96 };
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static unsigned int col_gpios[7] = { 90, 91, 100, 36, 12, 97, 98 };
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static int h4_keymap[] = {
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KEY(0, 0, KEY_LEFT),
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KEY(0, 1, KEY_RIGHT),
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KEY(0, 2, KEY_A),
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KEY(0, 3, KEY_B),
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KEY(0, 4, KEY_C),
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KEY(1, 0, KEY_DOWN),
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KEY(1, 1, KEY_UP),
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KEY(1, 2, KEY_E),
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KEY(1, 3, KEY_F),
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KEY(1, 4, KEY_G),
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KEY(2, 0, KEY_ENTER),
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KEY(2, 1, KEY_I),
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KEY(2, 2, KEY_J),
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KEY(2, 3, KEY_K),
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KEY(2, 4, KEY_3),
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KEY(3, 0, KEY_M),
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KEY(3, 1, KEY_N),
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KEY(3, 2, KEY_O),
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KEY(3, 3, KEY_P),
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KEY(3, 4, KEY_Q),
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KEY(4, 0, KEY_R),
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KEY(4, 1, KEY_4),
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KEY(4, 2, KEY_T),
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KEY(4, 3, KEY_U),
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KEY(4, 4, KEY_ENTER),
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KEY(5, 0, KEY_V),
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KEY(5, 1, KEY_W),
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KEY(5, 2, KEY_L),
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KEY(5, 3, KEY_S),
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KEY(5, 4, KEY_ENTER),
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0
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};
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static struct mtd_partition h4_partitions[] = {
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/* bootloader (U-Boot, etc) in first sector */
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{
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.name = "bootloader",
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.offset = 0,
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.size = SZ_128K,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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},
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/* bootloader params in the next sector */
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{
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.name = "params",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_128K,
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.mask_flags = 0,
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},
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/* kernel */
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{
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.name = "kernel",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_2M,
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.mask_flags = 0
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},
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/* file system */
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{
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.name = "filesystem",
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.offset = MTDPART_OFS_APPEND,
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.size = MTDPART_SIZ_FULL,
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.mask_flags = 0
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}
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};
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static struct flash_platform_data h4_flash_data = {
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.map_name = "cfi_probe",
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.width = 2,
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.parts = h4_partitions,
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.nr_parts = ARRAY_SIZE(h4_partitions),
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};
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static struct resource h4_flash_resource = {
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.start = H4_CS0_BASE,
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.end = H4_CS0_BASE + SZ_64M - 1,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device h4_flash_device = {
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.name = "omapflash",
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.id = 0,
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.dev = {
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.platform_data = &h4_flash_data,
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},
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.num_resources = 1,
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.resource = &h4_flash_resource,
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};
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static struct resource h4_smc91x_resources[] = {
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[0] = {
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.start = OMAP24XX_ETHR_START, /* Physical */
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.end = OMAP24XX_ETHR_START + 0xf,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
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.end = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device h4_smc91x_device = {
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.name = "smc91x",
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.id = -1,
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.num_resources = ARRAY_SIZE(h4_smc91x_resources),
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.resource = h4_smc91x_resources,
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};
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/* Select between the IrDA and aGPS module
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*/
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static int h4_select_irda(struct device *dev, int state)
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{
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unsigned char expa;
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int err = 0;
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if ((err = read_gpio_expa(&expa, 0x21))) {
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printk(KERN_ERR "Error reading from I/O expander\n");
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return err;
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}
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/* 'P6' enable/disable IRDA_TX and IRDA_RX */
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if (state & IR_SEL) { /* IrDa */
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if ((err = write_gpio_expa(expa | 0x01, 0x21))) {
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printk(KERN_ERR "Error writing to I/O expander\n");
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return err;
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}
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} else {
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if ((err = write_gpio_expa(expa & ~0x01, 0x21))) {
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printk(KERN_ERR "Error writing to I/O expander\n");
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return err;
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}
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}
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return err;
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}
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static void set_trans_mode(struct work_struct *work)
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{
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struct omap_irda_config *irda_config =
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container_of(work, struct omap_irda_config, gpio_expa.work);
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int mode = irda_config->mode;
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unsigned char expa;
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int err = 0;
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if ((err = read_gpio_expa(&expa, 0x20)) != 0) {
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printk(KERN_ERR "Error reading from I/O expander\n");
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}
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expa &= ~0x01;
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if (!(mode & IR_SIRMODE)) { /* MIR/FIR */
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expa |= 0x01;
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}
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if ((err = write_gpio_expa(expa, 0x20)) != 0) {
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printk(KERN_ERR "Error writing to I/O expander\n");
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}
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}
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static int h4_transceiver_mode(struct device *dev, int mode)
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{
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struct omap_irda_config *irda_config = dev->platform_data;
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irda_config->mode = mode;
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cancel_delayed_work(&irda_config->gpio_expa);
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PREPARE_DELAYED_WORK(&irda_config->gpio_expa, set_trans_mode);
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schedule_delayed_work(&irda_config->gpio_expa, 0);
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return 0;
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}
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static struct omap_irda_config h4_irda_data = {
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.transceiver_cap = IR_SIRMODE | IR_MIRMODE | IR_FIRMODE,
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.transceiver_mode = h4_transceiver_mode,
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.select_irda = h4_select_irda,
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.rx_channel = OMAP24XX_DMA_UART3_RX,
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.tx_channel = OMAP24XX_DMA_UART3_TX,
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.dest_start = OMAP_UART3_BASE,
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.src_start = OMAP_UART3_BASE,
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.tx_trigger = OMAP24XX_DMA_UART3_TX,
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.rx_trigger = OMAP24XX_DMA_UART3_RX,
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};
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static struct resource h4_irda_resources[] = {
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[0] = {
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.start = INT_24XX_UART3_IRQ,
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.end = INT_24XX_UART3_IRQ,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device h4_irda_device = {
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.name = "omapirda",
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.id = -1,
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.dev = {
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.platform_data = &h4_irda_data,
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},
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.num_resources = 1,
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.resource = h4_irda_resources,
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};
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static struct omap_kp_platform_data h4_kp_data = {
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.rows = 6,
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.cols = 7,
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.keymap = h4_keymap,
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.keymapsize = ARRAY_SIZE(h4_keymap),
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.rep = 1,
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.row_gpios = row_gpios,
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.col_gpios = col_gpios,
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};
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static struct platform_device h4_kp_device = {
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.name = "omap-keypad",
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.id = -1,
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.dev = {
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.platform_data = &h4_kp_data,
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},
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};
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static struct platform_device h4_lcd_device = {
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.name = "lcd_h4",
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.id = -1,
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};
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static struct resource h4_led_resources[] = {
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[0] = {
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device h4_led_device = {
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.name = "omap_dbg_led",
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.id = -1,
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.num_resources = ARRAY_SIZE(h4_led_resources),
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.resource = h4_led_resources,
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};
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static struct platform_device *h4_devices[] __initdata = {
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&h4_smc91x_device,
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&h4_flash_device,
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&h4_irda_device,
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&h4_kp_device,
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&h4_lcd_device,
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&h4_led_device,
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};
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static inline void __init h4_init_smc91x(void)
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{
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/* Make sure CS1 timings are correct */
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GPMC_CONFIG1_1 = 0x00011200;
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GPMC_CONFIG2_1 = 0x001f1f01;
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GPMC_CONFIG3_1 = 0x00080803;
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GPMC_CONFIG4_1 = 0x1c091c09;
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GPMC_CONFIG5_1 = 0x041f1f1f;
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GPMC_CONFIG6_1 = 0x000004c4;
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GPMC_CONFIG7_1 = 0x00000f40 | (0x08000000 >> 24);
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udelay(100);
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omap_cfg_reg(M15_24XX_GPIO92);
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if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
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printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
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OMAP24XX_ETHR_GPIO_IRQ);
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return;
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}
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omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
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}
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static void __init omap_h4_init_irq(void)
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{
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omap2_init_common_hw();
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omap_init_irq();
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omap_gpio_init();
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h4_init_smc91x();
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}
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static struct omap_uart_config h4_uart_config __initdata = {
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.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
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};
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static struct omap_mmc_config h4_mmc_config __initdata = {
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.mmc [0] = {
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.enabled = 1,
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.wire4 = 1,
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.wp_pin = -1,
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.power_pin = -1,
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.switch_pin = -1,
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},
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};
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static struct omap_lcd_config h4_lcd_config __initdata = {
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.ctrl_name = "internal",
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};
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static struct omap_board_config_kernel h4_config[] = {
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{ OMAP_TAG_UART, &h4_uart_config },
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{ OMAP_TAG_MMC, &h4_mmc_config },
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{ OMAP_TAG_LCD, &h4_lcd_config },
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};
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static void __init omap_h4_init(void)
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{
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/*
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* Make sure the serial ports are muxed on at this point.
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* You have to mux them off in device drivers later on
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* if not needed.
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*/
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#if defined(CONFIG_OMAP_IR) || defined(CONFIG_OMAP_IR_MODULE)
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omap_cfg_reg(K15_24XX_UART3_TX);
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omap_cfg_reg(K14_24XX_UART3_RX);
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#endif
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#if defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
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if (omap_has_menelaus()) {
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row_gpios[5] = 0;
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col_gpios[2] = 15;
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col_gpios[6] = 18;
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}
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#endif
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platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
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omap_board_config = h4_config;
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omap_board_config_size = ARRAY_SIZE(h4_config);
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omap_serial_init();
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}
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static void __init omap_h4_map_io(void)
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{
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omap2_map_common_io();
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}
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MACHINE_START(OMAP_H4, "OMAP2420 H4 board")
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/* Maintainer: Paul Mundt <paul.mundt@nokia.com> */
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.phys_io = 0x48000000,
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.io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
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.boot_params = 0x80000100,
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.map_io = omap_h4_map_io,
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.init_irq = omap_h4_init_irq,
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.init_machine = omap_h4_init,
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.timer = &omap_timer,
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MACHINE_END
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