/arch/arm/mach-pxa/corgi.c

  1/*
  2 * Support for Sharp SL-C7xx PDAs
  3 * Models: SL-C700 (Corgi), SL-C750 (Shepherd), SL-C760 (Husky)
  4 *
  5 * Copyright (c) 2004-2005 Richard Purdie
  6 *
  7 * Based on Sharp's 2.4 kernel patches/lubbock.c
  8 *
  9 * This program is free software; you can redistribute it and/or modify
 10 * it under the terms of the GNU General Public License version 2 as
 11 * published by the Free Software Foundation.
 12 *
 13 */
 14
 15#include <linux/kernel.h>
 16#include <linux/init.h>
 17#include <linux/device.h>
 18#include <linux/major.h>
 19#include <linux/fs.h>
 20#include <linux/interrupt.h>
 21#include <linux/mmc/host.h>
 22
 23#include <asm/setup.h>
 24#include <asm/memory.h>
 25#include <asm/mach-types.h>
 26#include <asm/hardware.h>
 27#include <asm/irq.h>
 28#include <asm/io.h>
 29
 30#include <asm/mach/arch.h>
 31#include <asm/mach/map.h>
 32#include <asm/mach/irq.h>
 33
 34#include <asm/arch/pxa-regs.h>
 35#include <asm/arch/irq.h>
 36#include <asm/arch/mmc.h>
 37#include <asm/arch/udc.h>
 38#include <asm/arch/corgi.h>
 39
 40#include <asm/mach/sharpsl_param.h>
 41#include <asm/hardware/scoop.h>
 42#include <video/w100fb.h>
 43
 44#include "generic.h"
 45
 46
 47/*
 48 * Corgi SCOOP Device
 49 */
 50static struct resource corgi_scoop_resources[] = {
 51	[0] = {
 52		.start		= 0x10800000,
 53		.end		= 0x10800fff,
 54		.flags		= IORESOURCE_MEM,
 55	},
 56};
 57
 58static struct scoop_config corgi_scoop_setup = {
 59	.io_dir 	= CORGI_SCOOP_IO_DIR,
 60	.io_out		= CORGI_SCOOP_IO_OUT,
 61};
 62
 63struct platform_device corgiscoop_device = {
 64	.name		= "sharp-scoop",
 65	.id		= -1,
 66	.dev		= {
 67 		.platform_data	= &corgi_scoop_setup,
 68	},
 69	.num_resources	= ARRAY_SIZE(corgi_scoop_resources),
 70	.resource	= corgi_scoop_resources,
 71};
 72
 73
 74/*
 75 * Corgi SSP Device
 76 *
 77 * Set the parent as the scoop device because a lot of SSP devices
 78 * also use scoop functions and this makes the power up/down order
 79 * work correctly.
 80 */
 81static struct platform_device corgissp_device = {
 82	.name		= "corgi-ssp",
 83	.dev		= {
 84 		.parent = &corgiscoop_device.dev,
 85	},
 86	.id		= -1,
 87};
 88
 89
 90/*
 91 * Corgi w100 Frame Buffer Device
 92 */
 93static struct w100fb_mach_info corgi_fb_info = {
 94	.w100fb_ssp_send 	= corgi_ssp_lcdtg_send,
 95	.comadj 			= -1,
 96	.phadadj 			= -1,
 97};
 98
 99static struct resource corgi_fb_resources[] = {
100	[0] = {
101		.start		= 0x08000000,
102		.end		= 0x08ffffff,
103		.flags		= IORESOURCE_MEM,
104	},
105};
106
107static struct platform_device corgifb_device = {
108	.name		= "w100fb",
109	.id		= -1,
110	.dev		= {
111 		.platform_data	= &corgi_fb_info,
112 		.parent = &corgissp_device.dev,
113	},
114	.num_resources	= ARRAY_SIZE(corgi_fb_resources),
115	.resource	= corgi_fb_resources,
116};
117
118
119/*
120 * Corgi Backlight Device
121 */
122static struct platform_device corgibl_device = {
123	.name		= "corgi-bl",
124	.dev		= {
125 		.parent = &corgifb_device.dev,
126	},
127	.id		= -1,
128};
129
130
131/*
132 * MMC/SD Device
133 *
134 * The card detect interrupt isn't debounced so we delay it by HZ/4
135 * to give the card a chance to fully insert/eject.
136 */
137static struct mmc_detect {
138	struct timer_list detect_timer;
139	void *devid;
140} mmc_detect;
141
142static void mmc_detect_callback(unsigned long data)
143{
144	mmc_detect_change(mmc_detect.devid);
145}
146
147static irqreturn_t corgi_mmc_detect_int(int irq, void *devid, struct pt_regs *regs)
148{
149	mmc_detect.devid=devid;
150	mod_timer(&mmc_detect.detect_timer, jiffies + HZ/4);
151	return IRQ_HANDLED;
152}
153
154static int corgi_mci_init(struct device *dev, irqreturn_t (*unused_detect_int)(int, void *, struct pt_regs *), void *data)
155{
156	int err;
157
158	/* setup GPIO for PXA25x MMC controller	*/
159	pxa_gpio_mode(GPIO6_MMCCLK_MD);
160	pxa_gpio_mode(GPIO8_MMCCS0_MD);
161	pxa_gpio_mode(CORGI_GPIO_nSD_DETECT | GPIO_IN);
162	pxa_gpio_mode(CORGI_GPIO_SD_PWR | GPIO_OUT);
163
164	init_timer(&mmc_detect.detect_timer);
165	mmc_detect.detect_timer.function = mmc_detect_callback;
166	mmc_detect.detect_timer.data = (unsigned long) &mmc_detect;
167
168	err = request_irq(CORGI_IRQ_GPIO_nSD_DETECT, corgi_mmc_detect_int, SA_INTERRUPT,
169			     "MMC card detect", data);
170	if (err) {
171		printk(KERN_ERR "corgi_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
172		return -1;
173	}
174
175	set_irq_type(CORGI_IRQ_GPIO_nSD_DETECT, IRQT_BOTHEDGE);
176
177	return 0;
178}
179
180static void corgi_mci_setpower(struct device *dev, unsigned int vdd)
181{
182	struct pxamci_platform_data* p_d = dev->platform_data;
183
184	if (( 1 << vdd) & p_d->ocr_mask) {
185		printk(KERN_DEBUG "%s: on\n", __FUNCTION__);
186		GPSR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
187	} else {
188		printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
189		GPCR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
190	}
191}
192
193static void corgi_mci_exit(struct device *dev, void *data)
194{
195	free_irq(CORGI_IRQ_GPIO_nSD_DETECT, data);
196	del_timer(&mmc_detect.detect_timer);
197}
198
199static struct pxamci_platform_data corgi_mci_platform_data = {
200	.ocr_mask	= MMC_VDD_32_33|MMC_VDD_33_34,
201	.init 		= corgi_mci_init,
202	.setpower 	= corgi_mci_setpower,
203	.exit		= corgi_mci_exit,
204};
205
206
207/*
208 * USB Device Controller
209 */
210static void corgi_udc_command(int cmd)
211{
212	switch(cmd)	{
213	case PXA2XX_UDC_CMD_CONNECT:
214		GPSR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
215		break;
216	case PXA2XX_UDC_CMD_DISCONNECT:
217		GPCR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
218		break;
219	}
220}
221
222static struct pxa2xx_udc_mach_info udc_info __initdata = {
223	/* no connect GPIO; corgi can't tell connection status */
224	.udc_command		= corgi_udc_command,
225};
226
227
228static struct platform_device *devices[] __initdata = {
229	&corgiscoop_device,
230	&corgissp_device,
231	&corgifb_device,
232	&corgibl_device,
233};
234
235static void __init corgi_init(void)
236{
237	corgi_fb_info.comadj=sharpsl_param.comadj;
238	corgi_fb_info.phadadj=sharpsl_param.phadadj;
239
240	pxa_gpio_mode(CORGI_GPIO_USB_PULLUP | GPIO_OUT);
241 	pxa_set_udc_info(&udc_info);
242	pxa_set_mci_info(&corgi_mci_platform_data);
243
244	platform_add_devices(devices, ARRAY_SIZE(devices));
245}
246
247static void __init fixup_corgi(struct machine_desc *desc,
248		struct tag *tags, char **cmdline, struct meminfo *mi)
249{
250	sharpsl_save_param();
251	mi->nr_banks=1;
252	mi->bank[0].start = 0xa0000000;
253	mi->bank[0].node = 0;
254	if (machine_is_corgi())
255		mi->bank[0].size = (32*1024*1024);
256	else
257		mi->bank[0].size = (64*1024*1024);
258}
259
260static void __init corgi_init_irq(void)
261{
262	pxa_init_irq();
263}
264
265static struct map_desc corgi_io_desc[] __initdata = {
266/*    virtual     physical    length      */
267/*	{ 0xf1000000, 0x08000000, 0x01000000, MT_DEVICE },*/ /* LCDC (readable for Qt driver) */
268/*	{ 0xef700000, 0x10800000, 0x00001000, MT_DEVICE },*/  /* SCOOP */
269	{ 0xef800000, 0x00000000, 0x00800000, MT_DEVICE }, /* Boot Flash */
270};
271
272static void __init corgi_map_io(void)
273{
274	pxa_map_io();
275	iotable_init(corgi_io_desc,ARRAY_SIZE(corgi_io_desc));
276
277	/* setup sleep mode values */
278	PWER  = 0x00000002;
279	PFER  = 0x00000000;
280	PRER  = 0x00000002;
281	PGSR0 = 0x0158C000;
282	PGSR1 = 0x00FF0080;
283	PGSR2 = 0x0001C004;
284	/* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
285	PCFR |= PCFR_OPDE;
286}
287
288#ifdef CONFIG_MACH_CORGI
289MACHINE_START(CORGI, "SHARP Corgi")
290	BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
291	FIXUP(fixup_corgi)
292	MAPIO(corgi_map_io)
293	INITIRQ(corgi_init_irq)
294	.init_machine = corgi_init,
295	.timer = &pxa_timer,
296MACHINE_END
297#endif
298
299#ifdef CONFIG_MACH_SHEPHERD
300MACHINE_START(SHEPHERD, "SHARP Shepherd")
301	BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
302	FIXUP(fixup_corgi)
303	MAPIO(corgi_map_io)
304	INITIRQ(corgi_init_irq)
305	.init_machine = corgi_init,
306	.timer = &pxa_timer,
307MACHINE_END
308#endif
309
310#ifdef CONFIG_MACH_HUSKY
311MACHINE_START(HUSKY, "SHARP Husky")
312	BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
313	FIXUP(fixup_corgi)
314	MAPIO(corgi_map_io)
315	INITIRQ(corgi_init_irq)
316	.init_machine = corgi_init,
317	.timer = &pxa_timer,
318MACHINE_END
319#endif
320