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android_kernel_motorola_sm6225/arch/arm/mach-omap2/board-omap3beagle.c
David Brownell bb3b9d8eb9 ARM: OMAP3: Initialize regulators for Beagle and Overo 
Initialize regulators for Beagle and Overo.

Patch is based on earlier patches posted to linux-omap mailing
list.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-05-28 14:04:03 -07:00

428 lines
10 KiB
C
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/*
* linux/arch/arm/mach-omap2/board-omap3beagle.c
*
* Copyright (C) 2008 Texas Instruments
*
* Modified from mach-omap2/board-3430sdp.c
*
* Initial code: Syed Mohammed Khasim
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/nand.h>
#include <linux/regulator/machine.h>
#include <linux/i2c/twl4030.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/flash.h>
#include <mach/board.h>
#include <mach/common.h>
#include <mach/gpmc.h>
#include <mach/nand.h>
#include <mach/mux.h>
#include <mach/usb.h>
#include <mach/timer-gp.h>
#include "mmc-twl4030.h"
#define GPMC_CS0_BASE 0x60
#define GPMC_CS_SIZE 0x30
#define NAND_BLOCK_SIZE SZ_128K
static struct mtd_partition omap3beagle_nand_partitions[] = {
/* All the partition sizes are listed in terms of NAND block size */
{
.name = "X-Loader",
.offset = 0,
.size = 4 * NAND_BLOCK_SIZE,
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
{
.name = "U-Boot",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
.size = 15 * NAND_BLOCK_SIZE,
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
{
.name = "U-Boot Env",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x260000 */
.size = 1 * NAND_BLOCK_SIZE,
},
{
.name = "Kernel",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
.size = 32 * NAND_BLOCK_SIZE,
},
{
.name = "File System",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
.size = MTDPART_SIZ_FULL,
},
};
static struct omap_nand_platform_data omap3beagle_nand_data = {
.options = NAND_BUSWIDTH_16,
.parts = omap3beagle_nand_partitions,
.nr_parts = ARRAY_SIZE(omap3beagle_nand_partitions),
.dma_channel = -1, /* disable DMA in OMAP NAND driver */
.nand_setup = NULL,
.dev_ready = NULL,
};
static struct resource omap3beagle_nand_resource = {
.flags = IORESOURCE_MEM,
};
static struct platform_device omap3beagle_nand_device = {
.name = "omap2-nand",
.id = -1,
.dev = {
.platform_data = &omap3beagle_nand_data,
},
.num_resources = 1,
.resource = &omap3beagle_nand_resource,
};
#include "sdram-micron-mt46h32m32lf-6.h"
static struct omap_uart_config omap3_beagle_uart_config __initdata = {
.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
};
static struct twl4030_hsmmc_info mmc[] = {
{
.mmc = 1,
.wires = 8,
.gpio_wp = 29,
},
{} /* Terminator */
};
static struct platform_device omap3_beagle_lcd_device = {
.name = "omap3beagle_lcd",
.id = -1,
};
static struct omap_lcd_config omap3_beagle_lcd_config __initdata = {
.ctrl_name = "internal",
};
static struct regulator_consumer_supply beagle_vmmc1_supply = {
.supply = "vmmc",
};
static struct regulator_consumer_supply beagle_vsim_supply = {
.supply = "vmmc_aux",
};
static struct gpio_led gpio_leds[];
static int beagle_twl_gpio_setup(struct device *dev,
unsigned gpio, unsigned ngpio)
{
/* gpio + 0 is "mmc0_cd" (input/IRQ) */
omap_cfg_reg(AH8_34XX_GPIO29);
mmc[0].gpio_cd = gpio + 0;
twl4030_mmc_init(mmc);
/* link regulators to MMC adapters */
beagle_vmmc1_supply.dev = mmc[0].dev;
beagle_vsim_supply.dev = mmc[0].dev;
/* REVISIT: need ehci-omap hooks for external VBUS
* power switch and overcurrent detect
*/
gpio_request(gpio + 1, "EHCI_nOC");
gpio_direction_input(gpio + 1);
/* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1);
/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
return 0;
}
static struct twl4030_gpio_platform_data beagle_gpio_data = {
.gpio_base = OMAP_MAX_GPIO_LINES,
.irq_base = TWL4030_GPIO_IRQ_BASE,
.irq_end = TWL4030_GPIO_IRQ_END,
.use_leds = true,
.pullups = BIT(1),
.pulldowns = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
| BIT(15) | BIT(16) | BIT(17),
.setup = beagle_twl_gpio_setup,
};
static struct regulator_consumer_supply beagle_vdac_supply = {
.supply = "vdac",
.dev = &omap3_beagle_lcd_device.dev,
};
static struct regulator_consumer_supply beagle_vdvi_supply = {
.supply = "vdvi",
.dev = &omap3_beagle_lcd_device.dev,
};
/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
static struct regulator_init_data beagle_vmmc1 = {
.constraints = {
.min_uV = 1850000,
.max_uV = 3150000,
.valid_modes_mask = REGULATOR_MODE_NORMAL
| REGULATOR_MODE_STANDBY,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
| REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
},
.num_consumer_supplies = 1,
.consumer_supplies = &beagle_vmmc1_supply,
};
/* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
static struct regulator_init_data beagle_vsim = {
.constraints = {
.min_uV = 1800000,
.max_uV = 3000000,
.valid_modes_mask = REGULATOR_MODE_NORMAL
| REGULATOR_MODE_STANDBY,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
| REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
},
.num_consumer_supplies = 1,
.consumer_supplies = &beagle_vsim_supply,
};
/* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
static struct regulator_init_data beagle_vdac = {
.constraints = {
.min_uV = 1800000,
.max_uV = 1800000,
.valid_modes_mask = REGULATOR_MODE_NORMAL
| REGULATOR_MODE_STANDBY,
.valid_ops_mask = REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
},
.num_consumer_supplies = 1,
.consumer_supplies = &beagle_vdac_supply,
};
/* VPLL2 for digital video outputs */
static struct regulator_init_data beagle_vpll2 = {
.constraints = {
.name = "VDVI",
.min_uV = 1800000,
.max_uV = 1800000,
.valid_modes_mask = REGULATOR_MODE_NORMAL
| REGULATOR_MODE_STANDBY,
.valid_ops_mask = REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
},
.num_consumer_supplies = 1,
.consumer_supplies = &beagle_vdvi_supply,
};
static struct twl4030_platform_data beagle_twldata = {
.irq_base = TWL4030_IRQ_BASE,
.irq_end = TWL4030_IRQ_END,
/* platform_data for children goes here */
.gpio = &beagle_gpio_data,
.vmmc1 = &beagle_vmmc1,
.vsim = &beagle_vsim,
.vdac = &beagle_vdac,
.vpll2 = &beagle_vpll2,
};
static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
{
I2C_BOARD_INFO("twl4030", 0x48),
.flags = I2C_CLIENT_WAKE,
.irq = INT_34XX_SYS_NIRQ,
.platform_data = &beagle_twldata,
},
};
static int __init omap3_beagle_i2c_init(void)
{
omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
ARRAY_SIZE(beagle_i2c_boardinfo));
/* Bus 3 is attached to the DVI port where devices like the pico DLP
* projector don't work reliably with 400kHz */
omap_register_i2c_bus(3, 100, NULL, 0);
return 0;
}
static void __init omap3_beagle_init_irq(void)
{
omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
omap_init_irq();
#ifdef CONFIG_OMAP_32K_TIMER
omap2_gp_clockevent_set_gptimer(12);
#endif
omap_gpio_init();
}
static struct gpio_led gpio_leds[] = {
{
.name = "beagleboard::usr0",
.default_trigger = "heartbeat",
.gpio = 150,
},
{
.name = "beagleboard::usr1",
.default_trigger = "mmc0",
.gpio = 149,
},
{
.name = "beagleboard::pmu_stat",
.gpio = -EINVAL, /* gets replaced */
.active_low = true,
},
};
static struct gpio_led_platform_data gpio_led_info = {
.leds = gpio_leds,
.num_leds = ARRAY_SIZE(gpio_leds),
};
static struct platform_device leds_gpio = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &gpio_led_info,
},
};
static struct gpio_keys_button gpio_buttons[] = {
{
.code = BTN_EXTRA,
.gpio = 7,
.desc = "user",
.wakeup = 1,
},
};
static struct gpio_keys_platform_data gpio_key_info = {
.buttons = gpio_buttons,
.nbuttons = ARRAY_SIZE(gpio_buttons),
};
static struct platform_device keys_gpio = {
.name = "gpio-keys",
.id = -1,
.dev = {
.platform_data = &gpio_key_info,
},
};
static struct omap_board_config_kernel omap3_beagle_config[] __initdata = {
{ OMAP_TAG_UART, &omap3_beagle_uart_config },
{ OMAP_TAG_LCD, &omap3_beagle_lcd_config },
};
static struct platform_device *omap3_beagle_devices[] __initdata = {
&omap3_beagle_lcd_device,
&leds_gpio,
&keys_gpio,
};
static void __init omap3beagle_flash_init(void)
{
u8 cs = 0;
u8 nandcs = GPMC_CS_NUM + 1;
u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
/* find out the chip-select on which NAND exists */
while (cs < GPMC_CS_NUM) {
u32 ret = 0;
ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
if ((ret & 0xC00) == 0x800) {
printk(KERN_INFO "Found NAND on CS%d\n", cs);
if (nandcs > GPMC_CS_NUM)
nandcs = cs;
}
cs++;
}
if (nandcs > GPMC_CS_NUM) {
printk(KERN_INFO "NAND: Unable to find configuration "
"in GPMC\n ");
return;
}
if (nandcs < GPMC_CS_NUM) {
omap3beagle_nand_data.cs = nandcs;
omap3beagle_nand_data.gpmc_cs_baseaddr = (void *)
(gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
omap3beagle_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
if (platform_device_register(&omap3beagle_nand_device) < 0)
printk(KERN_ERR "Unable to register NAND device\n");
}
}
static void __init omap3_beagle_init(void)
{
omap3_beagle_i2c_init();
platform_add_devices(omap3_beagle_devices,
ARRAY_SIZE(omap3_beagle_devices));
omap_board_config = omap3_beagle_config;
omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
omap_serial_init();
omap_cfg_reg(J25_34XX_GPIO170);
gpio_request(170, "DVI_nPD");
/* REVISIT leave DVI powered down until it's needed ... */
gpio_direction_output(170, true);
usb_musb_init();
omap3beagle_flash_init();
}
static void __init omap3_beagle_map_io(void)
{
omap2_set_globals_343x();
omap2_map_common_io();
}
MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
/* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
.phys_io = 0x48000000,
.io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
.boot_params = 0x80000100,
.map_io = omap3_beagle_map_io,
.init_irq = omap3_beagle_init_irq,
.init_machine = omap3_beagle_init,
.timer = &omap_timer,
MACHINE_END
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