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/*
* (C) 2011 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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.
*
*
*/
#define pr_fmt(fmt) "tx25: " fmt
#include <common.h>
#include <init.h>
#include <driver.h>
#include <linux/sizes.h>
#include <gpio.h>
#include <environment.h>
#include <mach/imx25-regs.h>
#include <asm/armlinux.h>
#include <asm/sections.h>
#include <asm/barebox-arm.h>
#include <io.h>
#include <partition.h>
#include <generated/mach-types.h>
#include <mach/imx-nand.h>
#include <mach/iomux-mx25.h>
#include <mach/generic.h>
#include <mach/iim.h>
#include <linux/err.h>
#include <mach/devices-imx25.h>
#include <mach/bbu.h>
#include <asm/mmu.h>
#define TX25_FEC_PWR_GPIO IMX_GPIO_NR(4, 9)
#define TX25_FEC_RST_GPIO IMX_GPIO_NR(4, 7)
static struct gpio fec_gpios[] = {
{
.gpio = TX25_FEC_PWR_GPIO,
.flags = GPIOF_OUT_INIT_LOW,
.label = "fec-pwr",
}, {
.gpio = TX25_FEC_RST_GPIO,
.flags = GPIOF_OUT_INIT_LOW,
.label = "fec-rst",
},
};
static void noinline gpio_fec_active(void)
{
int ret;
/* power down phy, put into reset */
ret = gpio_request_array(fec_gpios, ARRAY_SIZE(fec_gpios));
if (ret) {
pr_err("Failed to request fec gpios: %s\n", strerror(-ret));
return;
}
udelay(10);
/* power up phy, but leave in reset */
gpio_set_value(TX25_FEC_PWR_GPIO, 1);
udelay(100);
/* FEC driver picks up the reset gpio later */
gpio_free(TX25_FEC_RST_GPIO);
}
static int tx25_init(void)
{
if (!of_machine_is_compatible("karo,imx25-tx25"))
return 0;
gpio_fec_active();
barebox_set_hostname("tx25");
armlinux_set_architecture(MACH_TYPE_TX25);
armlinux_set_serial(imx_uid());
imx_bbu_external_nand_register_handler("nand", "/dev/nand0.boot",
BBU_HANDLER_FLAG_DEFAULT);
return 0;
}
console_initcall(tx25_init);
static iomux_v3_cfg_t tx25_lcdc_gpios[] = {
MX25_PAD_A18__GPIO_2_4, /* LCD Reset (active LOW) */
MX25_PAD_PWM__GPIO_1_26, /* LCD Backlight brightness 0: full 1: off */
MX25_PAD_A19__GPIO_2_5, /* LCD Power Enable 0: off 1: on */
MX25_PAD_LSCLK__LSCLK,
MX25_PAD_LD0__LD0,
MX25_PAD_LD1__LD1,
MX25_PAD_LD2__LD2,
MX25_PAD_LD3__LD3,
MX25_PAD_LD4__LD4,
MX25_PAD_LD5__LD5,
MX25_PAD_LD6__LD6,
MX25_PAD_LD7__LD7,
MX25_PAD_LD8__LD8,
MX25_PAD_LD9__LD9,
MX25_PAD_LD10__LD10,
MX25_PAD_LD11__LD11,
MX25_PAD_LD12__LD12,
MX25_PAD_LD13__LD13,
MX25_PAD_LD14__LD14,
MX25_PAD_LD15__LD15,
MX25_PAD_D15__LD16,
MX25_PAD_D14__LD17,
MX25_PAD_HSYNC__HSYNC,
MX25_PAD_VSYNC__VSYNC,
MX25_PAD_OE_ACD__OE_ACD,
};
static struct imx_fb_videomode stk5_fb_mode = {
.bpp = 16,
.mode = {
.name = "G-ETV570G0DMU",
.pixclock = 33333,
.xres = 640,
.yres = 480,
.hsync_len = 64,
.left_margin = 96,
.right_margin = 80,
.vsync_len = 3,
.upper_margin = 46,
.lower_margin = 39,
},
.pcr = PCR_TFT | PCR_COLOR | PCR_FLMPOL | PCR_LPPOL | PCR_SCLK_SEL,
};
#define STK5_LCD_BACKLIGHT_GPIO IMX_GPIO_NR(1, 26)
#define STK5_LCD_RESET_GPIO IMX_GPIO_NR(2, 4)
#define STK5_LCD_POWER_GPIO IMX_GPIO_NR(2, 5)
static void tx25_fb_enable(int enable)
{
if (enable) {
gpio_direction_output(STK5_LCD_RESET_GPIO, 1);
gpio_direction_output(STK5_LCD_POWER_GPIO, 1);
mdelay(300);
gpio_direction_output(STK5_LCD_BACKLIGHT_GPIO, 0);
} else {
gpio_direction_output(STK5_LCD_BACKLIGHT_GPIO, 1);
gpio_direction_output(STK5_LCD_RESET_GPIO, 0);
gpio_direction_output(STK5_LCD_POWER_GPIO, 0);
}
}
static struct imx_fb_platform_data tx25_fb_data = {
.mode = &stk5_fb_mode,
.num_modes = 1,
.dmacr = 0x80040060,
.enable = tx25_fb_enable,
};
static int tx25_init_fb(void)
{
if (!IS_ENABLED(CONFIG_DRIVER_VIDEO_IMX))
return 0;
if (!of_machine_is_compatible("karo,imx25-tx25"))
return 0;
tx25_fb_enable(0);
mxc_iomux_v3_setup_multiple_pads(tx25_lcdc_gpios,
ARRAY_SIZE(tx25_lcdc_gpios));
imx25_add_fb(&tx25_fb_data);
return 0;
}
device_initcall(tx25_init_fb);
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