mirror of
https://github.com/torvalds/linux
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175 lines
3.8 KiB
C
175 lines
3.8 KiB
C
/*
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* Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include <linux/gpio.h>
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#include <linux/irq.h>
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#include <linux/platform_device.h>
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#include <asm/mach/arch.h>
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#include <mach/common.h>
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#include <mach/iomux.h>
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#include <mach/imxfb.h>
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#include <mach/hardware.h>
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#include <mach/mmc.h>
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#include "devices.h"
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static int pcm970_pins[] = {
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/* SDHC */
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PB4_PF_SD2_D0,
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PB5_PF_SD2_D1,
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PB6_PF_SD2_D2,
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PB7_PF_SD2_D3,
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PB8_PF_SD2_CMD,
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PB9_PF_SD2_CLK,
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GPIO_PORTC | 28 | GPIO_GPIO | GPIO_IN, /* card detect */
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/* display */
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PA5_PF_LSCLK,
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PA6_PF_LD0,
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PA7_PF_LD1,
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PA8_PF_LD2,
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PA9_PF_LD3,
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PA10_PF_LD4,
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PA11_PF_LD5,
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PA12_PF_LD6,
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PA13_PF_LD7,
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PA14_PF_LD8,
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PA15_PF_LD9,
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PA16_PF_LD10,
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PA17_PF_LD11,
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PA18_PF_LD12,
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PA19_PF_LD13,
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PA20_PF_LD14,
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PA21_PF_LD15,
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PA22_PF_LD16,
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PA23_PF_LD17,
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PA24_PF_REV,
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PA25_PF_CLS,
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PA26_PF_PS,
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PA27_PF_SPL_SPR,
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PA28_PF_HSYNC,
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PA29_PF_VSYNC,
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PA30_PF_CONTRAST,
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PA31_PF_OE_ACD,
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/*
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* it seems the data line misses a pullup, so we must enable
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* the internal pullup as a local workaround
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*/
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PD17_PF_I2C_DATA | GPIO_PUEN,
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PD18_PF_I2C_CLK,
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/* Camera */
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PB10_PF_CSI_D0,
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PB11_PF_CSI_D1,
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PB12_PF_CSI_D2,
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PB13_PF_CSI_D3,
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PB14_PF_CSI_D4,
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PB15_PF_CSI_MCLK,
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PB16_PF_CSI_PIXCLK,
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PB17_PF_CSI_D5,
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PB18_PF_CSI_D6,
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PB19_PF_CSI_D7,
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PB20_PF_CSI_VSYNC,
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PB21_PF_CSI_HSYNC,
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};
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static int pcm970_sdhc2_get_ro(struct device *dev)
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{
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return gpio_get_value(GPIO_PORTC + 28);
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}
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static int pcm970_sdhc2_init(struct device *dev, irq_handler_t detect_irq, void *data)
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{
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int ret;
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ret = request_irq(IRQ_GPIOC(29), detect_irq, IRQF_TRIGGER_FALLING,
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"imx-mmc-detect", data);
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if (ret)
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return ret;
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ret = gpio_request(GPIO_PORTC + 28, "imx-mmc-ro");
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if (ret) {
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free_irq(IRQ_GPIOC(29), data);
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return ret;
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}
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gpio_direction_input(GPIO_PORTC + 28);
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return 0;
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}
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static void pcm970_sdhc2_exit(struct device *dev, void *data)
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{
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free_irq(IRQ_GPIOC(29), data);
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gpio_free(GPIO_PORTC + 28);
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}
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static struct imxmmc_platform_data sdhc_pdata = {
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.get_ro = pcm970_sdhc2_get_ro,
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.init = pcm970_sdhc2_init,
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.exit = pcm970_sdhc2_exit,
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};
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/*
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* Connected is a portrait Sharp-QVGA display
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* of type: LQ035Q7DH06
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*/
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static struct imx_fb_platform_data pcm038_fb_data = {
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.pixclock = 188679, /* in ps (5.3MHz) */
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.xres = 240,
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.yres = 320,
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.bpp = 16,
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.hsync_len = 7,
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.left_margin = 5,
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.right_margin = 16,
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.vsync_len = 1,
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.upper_margin = 7,
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.lower_margin = 9,
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.fixed_screen_cpu = 0,
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/*
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* - HSYNC active high
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* - VSYNC active high
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* - clk notenabled while idle
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* - clock not inverted
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* - data not inverted
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* - data enable low active
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* - enable sharp mode
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*/
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.pcr = 0xFA0080C0,
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.pwmr = 0x00A903FF,
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.lscr1 = 0x00120300,
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.dmacr = 0x00020010,
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};
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/*
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* system init for baseboard usage. Will be called by pcm038 init.
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*
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* Add platform devices present on this baseboard and init
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* them from CPU side as far as required to use them later on
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*/
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void __init pcm970_baseboard_init(void)
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{
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mxc_gpio_setup_multiple_pins(pcm970_pins, ARRAY_SIZE(pcm970_pins),
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"PCM970");
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mxc_register_device(&mxc_fb_device, &pcm038_fb_data);
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mxc_register_device(&mxc_sdhc_device1, &sdhc_pdata);
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}
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