fafc9d3fa3
This patchis to add the first mmc controller support for pxa3xx. It's valid for pxa3[0|1|2]0. On zylonite, the first controller supports two slots, this patch only support the first one right now. Signed-off-by: Bridge Wu <bridge.wu@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
271 lines
6.2 KiB
C
271 lines
6.2 KiB
C
/*
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* linux/arch/arm/mach-pxa/zylonite.c
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*
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* Support for the PXA3xx Development Platform (aka Zylonite)
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*
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* Copyright (C) 2006 Marvell International Ltd.
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*
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* 2007-09-04: eric miao <eric.miao@marvell.com>
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* rewrite to align with latest kernel
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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/module.h>
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#include <linux/kernel.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/platform_device.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/hardware.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/pxafb.h>
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#include <asm/arch/zylonite.h>
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#include <asm/arch/mmc.h>
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#include "generic.h"
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#define MAX_SLOTS 2
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struct platform_mmc_slot zylonite_mmc_slot[MAX_SLOTS];
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int gpio_backlight;
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int gpio_eth_irq;
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int lcd_id;
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int lcd_orientation;
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static struct resource smc91x_resources[] = {
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[0] = {
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.start = ZYLONITE_ETH_PHYS + 0x300,
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.end = ZYLONITE_ETH_PHYS + 0xfffff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = -1, /* for run-time assignment */
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.end = -1,
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.flags = IORESOURCE_IRQ,
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}
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};
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static struct platform_device smc91x_device = {
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.name = "smc91x",
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.id = 0,
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.num_resources = ARRAY_SIZE(smc91x_resources),
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.resource = smc91x_resources,
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};
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#if defined(CONFIG_FB_PXA) || (CONFIG_FB_PXA_MODULES)
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static void zylonite_backlight_power(int on)
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{
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gpio_set_value(gpio_backlight, on);
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}
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static struct pxafb_mode_info toshiba_ltm035a776c_mode = {
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.pixclock = 110000,
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.xres = 240,
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.yres = 320,
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.bpp = 16,
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.hsync_len = 4,
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.left_margin = 6,
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.right_margin = 4,
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.vsync_len = 2,
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.upper_margin = 2,
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.lower_margin = 3,
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.sync = FB_SYNC_VERT_HIGH_ACT,
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};
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static struct pxafb_mode_info toshiba_ltm04c380k_mode = {
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.pixclock = 50000,
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.xres = 640,
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.yres = 480,
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.bpp = 16,
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.hsync_len = 1,
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.left_margin = 0x9f,
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.right_margin = 1,
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.vsync_len = 44,
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.upper_margin = 0,
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.lower_margin = 0,
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.sync = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
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};
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static struct pxafb_mach_info zylonite_toshiba_lcd_info = {
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.num_modes = 1,
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.lccr0 = LCCR0_Act,
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.lccr3 = LCCR3_PCP,
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.pxafb_backlight_power = zylonite_backlight_power,
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};
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static struct pxafb_mode_info sharp_ls037_modes[] = {
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[0] = {
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.pixclock = 158000,
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.xres = 240,
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.yres = 320,
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.bpp = 16,
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.hsync_len = 4,
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.left_margin = 39,
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.right_margin = 39,
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.vsync_len = 1,
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.upper_margin = 2,
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.lower_margin = 3,
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.sync = 0,
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},
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[1] = {
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.pixclock = 39700,
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.xres = 480,
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.yres = 640,
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.bpp = 16,
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.hsync_len = 8,
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.left_margin = 81,
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.right_margin = 81,
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.vsync_len = 1,
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.upper_margin = 2,
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.lower_margin = 7,
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.sync = 0,
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},
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};
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static struct pxafb_mach_info zylonite_sharp_lcd_info = {
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.modes = sharp_ls037_modes,
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.num_modes = 2,
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.lccr0 = LCCR0_Act,
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.lccr3 = LCCR3_PCP | LCCR3_HSP | LCCR3_VSP,
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.pxafb_backlight_power = zylonite_backlight_power,
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};
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static void __init zylonite_init_lcd(void)
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{
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/* backlight GPIO: output, default on */
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gpio_direction_output(gpio_backlight, 1);
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if (lcd_id & 0x20) {
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set_pxa_fb_info(&zylonite_sharp_lcd_info);
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return;
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}
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/* legacy LCD panels, it would be handy here if LCD panel type can
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* be decided at run-time
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*/
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if (1)
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zylonite_toshiba_lcd_info.modes = &toshiba_ltm035a776c_mode;
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else
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zylonite_toshiba_lcd_info.modes = &toshiba_ltm04c380k_mode;
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set_pxa_fb_info(&zylonite_toshiba_lcd_info);
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}
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#else
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static inline void zylonite_init_lcd(void) {}
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#endif
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#if defined(CONFIG_MMC)
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static int zylonite_mci_ro(struct device *dev)
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{
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struct platform_device *pdev = to_platform_device(dev);
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return gpio_get_value(zylonite_mmc_slot[pdev->id].gpio_wp);
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}
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static int zylonite_mci_init(struct device *dev,
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irq_handler_t zylonite_detect_int,
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void *data)
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{
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struct platform_device *pdev = to_platform_device(dev);
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int err, cd_irq, gpio_cd, gpio_wp;
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cd_irq = gpio_to_irq(zylonite_mmc_slot[pdev->id].gpio_cd);
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gpio_cd = zylonite_mmc_slot[pdev->id].gpio_cd;
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gpio_wp = zylonite_mmc_slot[pdev->id].gpio_wp;
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/*
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* setup GPIO for Zylonite MMC controller
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*/
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err = gpio_request(gpio_cd, "mmc card detect");
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if (err)
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goto err_request_cd;
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gpio_direction_input(gpio_cd);
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err = gpio_request(gpio_wp, "mmc write protect");
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if (err)
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goto err_request_wp;
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gpio_direction_input(gpio_wp);
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err = request_irq(cd_irq, zylonite_detect_int,
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IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
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"MMC card detect", data);
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if (err) {
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printk(KERN_ERR "%s: MMC/SD/SDIO: "
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"can't request card detect IRQ\n", __func__);
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goto err_request_irq;
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}
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return 0;
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err_request_irq:
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gpio_free(gpio_wp);
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err_request_wp:
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gpio_free(gpio_cd);
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err_request_cd:
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return err;
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}
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static void zylonite_mci_exit(struct device *dev, void *data)
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{
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struct platform_device *pdev = to_platform_device(dev);
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int cd_irq, gpio_cd, gpio_wp;
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cd_irq = gpio_to_irq(zylonite_mmc_slot[pdev->id].gpio_cd);
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gpio_cd = zylonite_mmc_slot[pdev->id].gpio_cd;
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gpio_wp = zylonite_mmc_slot[pdev->id].gpio_wp;
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free_irq(cd_irq, data);
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gpio_free(gpio_cd);
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gpio_free(gpio_wp);
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}
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static struct pxamci_platform_data zylonite_mci_platform_data = {
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.detect_delay = 20,
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.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
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.init = zylonite_mci_init,
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.exit = zylonite_mci_exit,
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.get_ro = zylonite_mci_ro,
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};
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static void __init zylonite_init_mmc(void)
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{
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pxa_set_mci_info(&zylonite_mci_platform_data);
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}
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#else
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static inline void zylonite_init_mmc(void) {}
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#endif
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static void __init zylonite_init(void)
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{
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/* board-processor specific initialization */
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zylonite_pxa300_init();
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zylonite_pxa320_init();
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/*
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* Note: We depend that the bootloader set
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* the correct value to MSC register for SMC91x.
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*/
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smc91x_resources[1].start = gpio_to_irq(gpio_eth_irq);
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smc91x_resources[1].end = gpio_to_irq(gpio_eth_irq);
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platform_device_register(&smc91x_device);
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zylonite_init_lcd();
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zylonite_init_mmc();
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}
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MACHINE_START(ZYLONITE, "PXA3xx Platform Development Kit (aka Zylonite)")
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.phys_io = 0x40000000,
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.boot_params = 0xa0000100,
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.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
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.map_io = pxa_map_io,
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.init_irq = pxa3xx_init_irq,
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.timer = &pxa_timer,
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.init_machine = zylonite_init,
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MACHINE_END
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