327 lines
7.4 KiB
C
327 lines
7.4 KiB
C
/*
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* Support for Sharp SL-C7xx PDAs
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* Models: SL-C700 (Corgi), SL-C750 (Shepherd), SL-C760 (Husky)
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*
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* Copyright (c) 2004-2005 Richard Purdie
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*
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* Based on Sharp's 2.4 kernel patches/lubbock.c
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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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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/major.h>
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#include <linux/fs.h>
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#include <linux/interrupt.h>
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#include <linux/mmc/host.h>
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#include <asm/setup.h>
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#include <asm/memory.h>
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#include <asm/mach-types.h>
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#include <asm/hardware.h>
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#include <asm/irq.h>
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#include <asm/io.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <asm/arch/pxa-regs.h>
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#include <asm/arch/irq.h>
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#include <asm/arch/mmc.h>
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#include <asm/arch/udc.h>
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#include <asm/arch/corgi.h>
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#include <asm/mach/sharpsl_param.h>
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#include <asm/hardware/scoop.h>
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#include <video/w100fb.h>
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#include "generic.h"
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/*
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* Corgi SCOOP Device
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*/
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static struct resource corgi_scoop_resources[] = {
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[0] = {
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.start = 0x10800000,
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.end = 0x10800fff,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct scoop_config corgi_scoop_setup = {
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.io_dir = CORGI_SCOOP_IO_DIR,
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.io_out = CORGI_SCOOP_IO_OUT,
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};
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struct platform_device corgiscoop_device = {
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.name = "sharp-scoop",
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.id = -1,
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.dev = {
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.platform_data = &corgi_scoop_setup,
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},
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.num_resources = ARRAY_SIZE(corgi_scoop_resources),
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.resource = corgi_scoop_resources,
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};
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/*
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* Corgi SSP Device
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*
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* Set the parent as the scoop device because a lot of SSP devices
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* also use scoop functions and this makes the power up/down order
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* work correctly.
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*/
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static struct platform_device corgissp_device = {
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.name = "corgi-ssp",
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.dev = {
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.parent = &corgiscoop_device.dev,
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},
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.id = -1,
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};
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/*
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* Corgi w100 Frame Buffer Device
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*/
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static struct w100fb_mach_info corgi_fb_info = {
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.w100fb_ssp_send = corgi_ssp_lcdtg_send,
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.comadj = -1,
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.phadadj = -1,
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};
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static struct resource corgi_fb_resources[] = {
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[0] = {
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.start = 0x08000000,
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.end = 0x08ffffff,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device corgifb_device = {
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.name = "w100fb",
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.id = -1,
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.dev = {
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.platform_data = &corgi_fb_info,
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.parent = &corgissp_device.dev,
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},
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.num_resources = ARRAY_SIZE(corgi_fb_resources),
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.resource = corgi_fb_resources,
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};
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/*
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* Corgi Backlight Device
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*/
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static struct platform_device corgibl_device = {
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.name = "corgi-bl",
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.dev = {
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.parent = &corgifb_device.dev,
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},
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.id = -1,
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};
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/*
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* MMC/SD Device
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*
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* The card detect interrupt isn't debounced so we delay it by HZ/4
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* to give the card a chance to fully insert/eject.
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*/
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static struct mmc_detect {
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struct timer_list detect_timer;
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void *devid;
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} mmc_detect;
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static void mmc_detect_callback(unsigned long data)
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{
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mmc_detect_change(mmc_detect.devid);
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}
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static irqreturn_t corgi_mmc_detect_int(int irq, void *devid, struct pt_regs *regs)
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{
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mmc_detect.devid=devid;
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mod_timer(&mmc_detect.detect_timer, jiffies + HZ/4);
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return IRQ_HANDLED;
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}
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static int corgi_mci_init(struct device *dev, irqreturn_t (*unused_detect_int)(int, void *, struct pt_regs *), void *data)
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{
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int err;
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/* setup GPIO for PXA25x MMC controller */
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pxa_gpio_mode(GPIO6_MMCCLK_MD);
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pxa_gpio_mode(GPIO8_MMCCS0_MD);
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pxa_gpio_mode(CORGI_GPIO_nSD_DETECT | GPIO_IN);
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pxa_gpio_mode(CORGI_GPIO_SD_PWR | GPIO_OUT);
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init_timer(&mmc_detect.detect_timer);
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mmc_detect.detect_timer.function = mmc_detect_callback;
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mmc_detect.detect_timer.data = (unsigned long) &mmc_detect;
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err = request_irq(CORGI_IRQ_GPIO_nSD_DETECT, corgi_mmc_detect_int, SA_INTERRUPT,
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"MMC card detect", data);
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if (err) {
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printk(KERN_ERR "corgi_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
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return -1;
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}
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set_irq_type(CORGI_IRQ_GPIO_nSD_DETECT, IRQT_BOTHEDGE);
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return 0;
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}
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static void corgi_mci_setpower(struct device *dev, unsigned int vdd)
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{
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struct pxamci_platform_data* p_d = dev->platform_data;
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if (( 1 << vdd) & p_d->ocr_mask) {
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printk(KERN_DEBUG "%s: on\n", __FUNCTION__);
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GPSR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
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} else {
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printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
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GPCR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
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}
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}
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static void corgi_mci_exit(struct device *dev, void *data)
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{
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free_irq(CORGI_IRQ_GPIO_nSD_DETECT, data);
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del_timer(&mmc_detect.detect_timer);
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}
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static struct pxamci_platform_data corgi_mci_platform_data = {
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.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
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.init = corgi_mci_init,
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.setpower = corgi_mci_setpower,
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.exit = corgi_mci_exit,
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};
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/*
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* USB Device Controller
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*/
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static void corgi_udc_command(int cmd)
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{
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switch(cmd) {
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case PXA2XX_UDC_CMD_CONNECT:
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GPSR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
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break;
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case PXA2XX_UDC_CMD_DISCONNECT:
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GPCR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
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break;
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}
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}
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static struct pxa2xx_udc_mach_info udc_info __initdata = {
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/* no connect GPIO; corgi can't tell connection status */
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.udc_command = corgi_udc_command,
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};
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static struct platform_device *devices[] __initdata = {
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&corgiscoop_device,
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&corgissp_device,
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&corgifb_device,
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&corgibl_device,
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};
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static void __init corgi_init(void)
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{
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corgi_fb_info.comadj=sharpsl_param.comadj;
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corgi_fb_info.phadadj=sharpsl_param.phadadj;
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pxa_gpio_mode(CORGI_GPIO_USB_PULLUP | GPIO_OUT);
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pxa_set_udc_info(&udc_info);
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pxa_set_mci_info(&corgi_mci_platform_data);
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platform_add_devices(devices, ARRAY_SIZE(devices));
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}
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static void __init fixup_corgi(struct machine_desc *desc,
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struct tag *tags, char **cmdline, struct meminfo *mi)
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{
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sharpsl_save_param();
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mi->nr_banks=1;
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mi->bank[0].start = 0xa0000000;
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mi->bank[0].node = 0;
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if (machine_is_corgi())
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mi->bank[0].size = (32*1024*1024);
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else
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mi->bank[0].size = (64*1024*1024);
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}
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static void __init corgi_init_irq(void)
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{
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pxa_init_irq();
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}
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static struct map_desc corgi_io_desc[] __initdata = {
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/* virtual physical length */
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/* { 0xf1000000, 0x08000000, 0x01000000, MT_DEVICE },*/ /* LCDC (readable for Qt driver) */
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/* { 0xef700000, 0x10800000, 0x00001000, MT_DEVICE },*/ /* SCOOP */
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{ 0xef800000, 0x00000000, 0x00800000, MT_DEVICE }, /* Boot Flash */
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};
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static void __init corgi_map_io(void)
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{
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pxa_map_io();
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iotable_init(corgi_io_desc,ARRAY_SIZE(corgi_io_desc));
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/* setup sleep mode values */
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PWER = 0x00000002;
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PFER = 0x00000000;
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PRER = 0x00000002;
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PGSR0 = 0x0158C000;
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PGSR1 = 0x00FF0080;
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PGSR2 = 0x0001C004;
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/* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
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PCFR |= PCFR_OPDE;
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}
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#ifdef CONFIG_MACH_CORGI
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MACHINE_START(CORGI, "SHARP Corgi")
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.phys_ram = 0xa0000000,
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.phys_io = 0x40000000,
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.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
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.fixup = fixup_corgi,
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.map_io = corgi_map_io,
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.init_irq = corgi_init_irq,
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.init_machine = corgi_init,
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.timer = &pxa_timer,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_SHEPHERD
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MACHINE_START(SHEPHERD, "SHARP Shepherd")
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.phys_ram = 0xa0000000,
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.phys_io = 0x40000000,
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.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
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.fixup = fixup_corgi,
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.map_io = corgi_map_io,
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.init_irq = corgi_init_irq,
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.init_machine = corgi_init,
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.timer = &pxa_timer,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_HUSKY
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MACHINE_START(HUSKY, "SHARP Husky")
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.phys_ram = 0xa0000000,
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.phys_io = 0x40000000,
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.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
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.fixup = fixup_corgi,
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.map_io = corgi_map_io,
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.init_irq = corgi_init_irq,
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.init_machine = corgi_init,
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.timer = &pxa_timer,
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MACHINE_END
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#endif
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