74617fb6b8
Patch from Richard Purdie Add functionality to allow machine specific reboot handlers on ARM. Add machine specific reboot and poweroff handlers for all PXA Zaurus models. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
339 lines
7.7 KiB
C
339 lines
7.7 KiB
C
/*
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* Support for Sharp SL-C6000x PDAs
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* Model: (Tosa)
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*
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* Copyright (c) 2005 Dirk Opfer
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*
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* Based on code written by Sharp/Lineo for 2.4 kernels
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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/platform_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 <linux/pm.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/system.h>
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#include <asm/arch/irda.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/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/tosa.h>
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#include <asm/hardware/scoop.h>
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#include <asm/mach/sharpsl_param.h>
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#include "generic.h"
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/*
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* SCOOP Device
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*/
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static struct resource tosa_scoop_resources[] = {
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[0] = {
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.start = TOSA_CF_PHYS,
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.end = TOSA_CF_PHYS + 0xfff,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct scoop_config tosa_scoop_setup = {
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.io_dir = TOSA_SCOOP_IO_DIR,
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.io_out = TOSA_SCOOP_IO_OUT,
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};
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struct platform_device tosascoop_device = {
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.name = "sharp-scoop",
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.id = 0,
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.dev = {
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.platform_data = &tosa_scoop_setup,
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},
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.num_resources = ARRAY_SIZE(tosa_scoop_resources),
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.resource = tosa_scoop_resources,
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};
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/*
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* SCOOP Device Jacket
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*/
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static struct resource tosa_scoop_jc_resources[] = {
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[0] = {
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.start = TOSA_SCOOP_PHYS + 0x40,
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.end = TOSA_SCOOP_PHYS + 0xfff,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct scoop_config tosa_scoop_jc_setup = {
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.io_dir = TOSA_SCOOP_JC_IO_DIR,
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.io_out = TOSA_SCOOP_JC_IO_OUT,
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};
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struct platform_device tosascoop_jc_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 = &tosa_scoop_jc_setup,
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.parent = &tosascoop_device.dev,
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},
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.num_resources = ARRAY_SIZE(tosa_scoop_jc_resources),
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.resource = tosa_scoop_jc_resources,
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};
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/*
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* PCMCIA
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*/
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static struct scoop_pcmcia_dev tosa_pcmcia_scoop[] = {
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{
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.dev = &tosascoop_device.dev,
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.irq = TOSA_IRQ_GPIO_CF_IRQ,
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.cd_irq = TOSA_IRQ_GPIO_CF_CD,
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.cd_irq_str = "PCMCIA0 CD",
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},{
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.dev = &tosascoop_jc_device.dev,
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.irq = TOSA_IRQ_GPIO_JC_CF_IRQ,
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.cd_irq = -1,
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},
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};
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static void tosa_pcmcia_init(void)
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{
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/* Setup default state of GPIO outputs
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before we enable them as outputs. */
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GPSR(GPIO48_nPOE) = GPIO_bit(GPIO48_nPOE) |
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GPIO_bit(GPIO49_nPWE) | GPIO_bit(GPIO50_nPIOR) |
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GPIO_bit(GPIO51_nPIOW) | GPIO_bit(GPIO52_nPCE_1) |
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GPIO_bit(GPIO53_nPCE_2);
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pxa_gpio_mode(GPIO48_nPOE_MD);
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pxa_gpio_mode(GPIO49_nPWE_MD);
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pxa_gpio_mode(GPIO50_nPIOR_MD);
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pxa_gpio_mode(GPIO51_nPIOW_MD);
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pxa_gpio_mode(GPIO55_nPREG_MD);
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pxa_gpio_mode(GPIO56_nPWAIT_MD);
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pxa_gpio_mode(GPIO57_nIOIS16_MD);
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pxa_gpio_mode(GPIO52_nPCE_1_MD);
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pxa_gpio_mode(GPIO53_nPCE_2_MD);
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pxa_gpio_mode(GPIO54_pSKTSEL_MD);
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}
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static struct scoop_pcmcia_config tosa_pcmcia_config = {
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.devs = &tosa_pcmcia_scoop[0],
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.num_devs = 2,
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.pcmcia_init = tosa_pcmcia_init,
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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 tosa_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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set_scoop_gpio(&tosascoop_jc_device.dev,TOSA_SCOOP_JC_USB_PULLUP);
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break;
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case PXA2XX_UDC_CMD_DISCONNECT:
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reset_scoop_gpio(&tosascoop_jc_device.dev,TOSA_SCOOP_JC_USB_PULLUP);
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break;
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}
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}
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static int tosa_udc_is_connected(void)
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{
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return ((GPLR(TOSA_GPIO_USB_IN) & GPIO_bit(TOSA_GPIO_USB_IN)) == 0);
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}
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static struct pxa2xx_udc_mach_info udc_info __initdata = {
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.udc_command = tosa_udc_command,
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.udc_is_connected = tosa_udc_is_connected,
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};
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/*
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* MMC/SD Device
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*/
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static struct pxamci_platform_data tosa_mci_platform_data;
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static int tosa_mci_init(struct device *dev, irqreturn_t (*tosa_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(TOSA_GPIO_nSD_DETECT | GPIO_IN);
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tosa_mci_platform_data.detect_delay = msecs_to_jiffies(250);
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err = request_irq(TOSA_IRQ_GPIO_nSD_DETECT, tosa_detect_int, SA_INTERRUPT,
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"MMC/SD card detect", data);
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if (err) {
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printk(KERN_ERR "tosa_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(TOSA_IRQ_GPIO_nSD_DETECT, IRQT_BOTHEDGE);
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return 0;
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}
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static void tosa_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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set_scoop_gpio(&tosascoop_device.dev,TOSA_SCOOP_PWR_ON);
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} else {
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reset_scoop_gpio(&tosascoop_device.dev,TOSA_SCOOP_PWR_ON);
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}
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}
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static int tosa_mci_get_ro(struct device *dev)
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{
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return (read_scoop_reg(&tosascoop_device.dev, SCOOP_GPWR)&TOSA_SCOOP_SD_WP);
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}
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static void tosa_mci_exit(struct device *dev, void *data)
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{
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free_irq(TOSA_IRQ_GPIO_nSD_DETECT, data);
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}
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static struct pxamci_platform_data tosa_mci_platform_data = {
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.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
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.init = tosa_mci_init,
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.get_ro = tosa_mci_get_ro,
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.setpower = tosa_mci_setpower,
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.exit = tosa_mci_exit,
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};
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/*
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* Irda
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*/
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static void tosa_irda_transceiver_mode(struct device *dev, int mode)
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{
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if (mode & IR_OFF) {
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reset_scoop_gpio(&tosascoop_device.dev,TOSA_SCOOP_IR_POWERDWN);
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pxa_gpio_mode(GPIO47_STTXD|GPIO_DFLT_LOW);
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pxa_gpio_mode(GPIO47_STTXD|GPIO_OUT);
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} else {
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pxa_gpio_mode(GPIO47_STTXD_MD);
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set_scoop_gpio(&tosascoop_device.dev,TOSA_SCOOP_IR_POWERDWN);
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}
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}
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static struct pxaficp_platform_data tosa_ficp_platform_data = {
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.transceiver_cap = IR_SIRMODE | IR_OFF,
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.transceiver_mode = tosa_irda_transceiver_mode,
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};
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/*
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* Tosa Keyboard
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*/
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static struct platform_device tosakbd_device = {
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.name = "tosa-keyboard",
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.id = -1,
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};
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/*
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* Tosa LEDs
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*/
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static struct platform_device tosaled_device = {
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.name = "tosa-led",
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.id = -1,
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};
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static struct platform_device *devices[] __initdata = {
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&tosascoop_device,
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&tosascoop_jc_device,
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&tosakbd_device,
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&tosaled_device,
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};
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static void tosa_poweroff(void)
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{
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RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
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pxa_gpio_mode(TOSA_GPIO_ON_RESET | GPIO_OUT);
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GPSR(TOSA_GPIO_ON_RESET) = GPIO_bit(TOSA_GPIO_ON_RESET);
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mdelay(1000);
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arm_machine_restart('h');
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}
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static void tosa_restart(char mode)
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{
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/* Bootloader magic for a reboot */
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if((MSC0 & 0xffff0000) == 0x7ff00000)
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MSC0 = (MSC0 & 0xffff) | 0x7ee00000;
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tosa_poweroff();
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}
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static void __init tosa_init(void)
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{
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pm_power_off = tosa_poweroff;
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arm_pm_restart = tosa_restart;
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pxa_gpio_mode(TOSA_GPIO_ON_RESET | GPIO_IN);
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pxa_gpio_mode(TOSA_GPIO_TC6393_INT | GPIO_IN);
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pxa_gpio_mode(TOSA_GPIO_USB_IN | GPIO_IN);
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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 = 0x00000000;
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PGSR1 = 0x00FF0002;
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PGSR2 = 0x00014000;
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PCFR |= PCFR_OPDE;
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/* enable batt_fault */
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PMCR = 0x01;
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pxa_set_mci_info(&tosa_mci_platform_data);
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pxa_set_udc_info(&udc_info);
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pxa_set_ficp_info(&tosa_ficp_platform_data);
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platform_scoop_config = &tosa_pcmcia_config;
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platform_add_devices(devices, ARRAY_SIZE(devices));
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}
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static void __init fixup_tosa(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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mi->bank[0].size = (64*1024*1024);
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}
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MACHINE_START(TOSA, "SHARP Tosa")
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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_tosa,
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.map_io = pxa_map_io,
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.init_irq = pxa_init_irq,
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.init_machine = tosa_init,
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.timer = &pxa_timer,
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MACHINE_END
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