/* * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de) * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. */ #include <linux/gpio.h> #include <linux/irq.h> #include <linux/platform_device.h> #include <linux/can/platform/sja1000.h> #include <asm/mach/arch.h> #include <mach/common.h> #include <mach/iomux-mx27.h> #include <mach/hardware.h> #include "devices-imx27.h" static const int pcm970_pins[] __initconst = { /* SDHC */ PB4_PF_SD2_D0, PB5_PF_SD2_D1, PB6_PF_SD2_D2, PB7_PF_SD2_D3, PB8_PF_SD2_CMD, PB9_PF_SD2_CLK, /* display */ PA5_PF_LSCLK, PA6_PF_LD0, PA7_PF_LD1, PA8_PF_LD2, PA9_PF_LD3, PA10_PF_LD4, PA11_PF_LD5, PA12_PF_LD6, PA13_PF_LD7, PA14_PF_LD8, PA15_PF_LD9, PA16_PF_LD10, PA17_PF_LD11, PA18_PF_LD12, PA19_PF_LD13, PA20_PF_LD14, PA21_PF_LD15, PA22_PF_LD16, PA23_PF_LD17, PA24_PF_REV, PA25_PF_CLS, PA26_PF_PS, PA27_PF_SPL_SPR, PA28_PF_HSYNC, PA29_PF_VSYNC, PA30_PF_CONTRAST, PA31_PF_OE_ACD, /* * it seems the data line misses a pullup, so we must enable * the internal pullup as a local workaround */ PD17_PF_I2C_DATA | GPIO_PUEN, PD18_PF_I2C_CLK, /* Camera */ PB10_PF_CSI_D0, PB11_PF_CSI_D1, PB12_PF_CSI_D2, PB13_PF_CSI_D3, PB14_PF_CSI_D4, PB15_PF_CSI_MCLK, PB16_PF_CSI_PIXCLK, PB17_PF_CSI_D5, PB18_PF_CSI_D6, PB19_PF_CSI_D7, PB20_PF_CSI_VSYNC, PB21_PF_CSI_HSYNC, }; static int pcm970_sdhc2_get_ro(struct device *dev) { return gpio_get_value(GPIO_PORTC + 28); } static int pcm970_sdhc2_init(struct device *dev, irq_handler_t detect_irq, void *data) { int ret; ret = request_irq(IRQ_GPIOC(29), detect_irq, IRQF_TRIGGER_FALLING, "imx-mmc-detect", data); if (ret) return ret; ret = gpio_request(GPIO_PORTC + 28, "imx-mmc-ro"); if (ret) { free_irq(IRQ_GPIOC(29), data); return ret; } gpio_direction_input(GPIO_PORTC + 28); return 0; } static void pcm970_sdhc2_exit(struct device *dev, void *data) { free_irq(IRQ_GPIOC(29), data); gpio_free(GPIO_PORTC + 28); } static const struct imxmmc_platform_data sdhc_pdata __initconst = { .get_ro = pcm970_sdhc2_get_ro, .init = pcm970_sdhc2_init, .exit = pcm970_sdhc2_exit, }; static struct imx_fb_videomode pcm970_modes[] = { { .mode = { .name = "Sharp-LQ035Q7", .refresh = 60, .xres = 240, .yres = 320, .pixclock = 188679, /* in ps (5.3MHz) */ .hsync_len = 7, .left_margin = 5, .right_margin = 16, .vsync_len = 1, .upper_margin = 7, .lower_margin = 9, }, /* * - HSYNC active high * - VSYNC active high * - clk notenabled while idle * - clock not inverted * - data not inverted * - data enable low active * - enable sharp mode */ .pcr = 0xF00080C0, .bpp = 16, }, { .mode = { .name = "TX090", .refresh = 60, .xres = 240, .yres = 320, .pixclock = 38255, .left_margin = 144, .right_margin = 0, .upper_margin = 7, .lower_margin = 40, .hsync_len = 96, .vsync_len = 1, }, /* * - HSYNC active low (1 << 22) * - VSYNC active low (1 << 23) * - clk notenabled while idle * - clock not inverted * - data not inverted * - data enable low active * - enable sharp mode */ .pcr = 0xF0008080 | (1<<22) | (1<<23) | (1<<19), .bpp = 32, }, }; static const struct imx_fb_platform_data pcm038_fb_data __initconst = { .mode = pcm970_modes, .num_modes = ARRAY_SIZE(pcm970_modes), .pwmr = 0x00A903FF, .lscr1 = 0x00120300, .dmacr = 0x00020010, }; static struct resource pcm970_sja1000_resources[] = { { .start = MX27_CS4_BASE_ADDR, .end = MX27_CS4_BASE_ADDR + 0x100 - 1, .flags = IORESOURCE_MEM, }, { .start = IRQ_GPIOE(19), .end = IRQ_GPIOE(19), .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE, }, }; static struct sja1000_platform_data pcm970_sja1000_platform_data = { .osc_freq = 16000000, .ocr = OCR_TX1_PULLDOWN | OCR_TX0_PUSHPULL, .cdr = CDR_CBP, }; static struct platform_device pcm970_sja1000 = { .name = "sja1000_platform", .dev = { .platform_data = &pcm970_sja1000_platform_data, }, .resource = pcm970_sja1000_resources, .num_resources = ARRAY_SIZE(pcm970_sja1000_resources), }; /* * system init for baseboard usage. Will be called by pcm038 init. * * Add platform devices present on this baseboard and init * them from CPU side as far as required to use them later on */ void __init pcm970_baseboard_init(void) { mxc_gpio_setup_multiple_pins(pcm970_pins, ARRAY_SIZE(pcm970_pins), "PCM970"); imx27_add_imx_fb(&pcm038_fb_data); mxc_gpio_mode(GPIO_PORTC | 28 | GPIO_GPIO | GPIO_IN); imx27_add_mxc_mmc(1, &sdhc_pdata); platform_device_register(&pcm970_sja1000); }