1/*
  2 * linux/arch/arm/mach-omap1/board-palmz71.c
  3 *
  4 * Modified from board-generic.c
  5 *
  6 * Support for the Palm Zire71 PDA.
  7 *
  8 * Original version : Laurent Gonzalez
  9 *
 10 * Modified for zire71 : Marek Vasut
 11 *
 12 * This program is free software; you can redistribute it and/or modify
 13 * it under the terms of the GNU General Public License version 2 as
 14 * published by the Free Software Foundation.
 15 */
 16
 17#include <linux/delay.h>
 18#include <linux/kernel.h>
 19#include <linux/init.h>
 20#include <linux/platform_device.h>
 21#include <linux/notifier.h>
 22#include <linux/clk.h>
 23#include <linux/irq.h>
 24#include <linux/input.h>
 25#include <linux/interrupt.h>
 26#include <linux/mtd/mtd.h>
 27#include <linux/mtd/partitions.h>
 28#include <linux/mtd/physmap.h>
 29
 30#include <mach/hardware.h>
 31#include <asm/mach-types.h>
 32#include <asm/mach/arch.h>
 33#include <asm/mach/map.h>
 34
 35#include <mach/gpio.h>
 36#include <plat/flash.h>
 37#include <plat/mux.h>
 38#include <plat/usb.h>
 39#include <plat/dma.h>
 40#include <plat/tc.h>
 41#include <plat/board.h>
 42#include <plat/irda.h>
 43#include <plat/keypad.h>
 44#include <plat/common.h>
 45#include <plat/omap-alsa.h>
 46
 47#include <linux/spi/spi.h>
 48#include <linux/spi/ads7846.h>
 49
 50#define PALMZ71_USBDETECT_GPIO	0
 51#define PALMZ71_PENIRQ_GPIO	6
 52#define PALMZ71_MMC_WP_GPIO	8
 53#define PALMZ71_HDQ_GPIO 	11
 54
 55#define PALMZ71_HOTSYNC_GPIO	OMAP_MPUIO(1)
 56#define PALMZ71_CABLE_GPIO	OMAP_MPUIO(2)
 57#define PALMZ71_SLIDER_GPIO	OMAP_MPUIO(3)
 58#define PALMZ71_MMC_IN_GPIO	OMAP_MPUIO(4)
 59
 60static void __init
 61omap_palmz71_init_irq(void)
 62{
 63	omap1_init_common_hw();
 64	omap1_init_irq();
 65}
 66
 67static const unsigned int palmz71_keymap[] = {
 68	KEY(0, 0, KEY_F1),
 69	KEY(1, 0, KEY_F2),
 70	KEY(2, 0, KEY_F3),
 71	KEY(3, 0, KEY_F4),
 72	KEY(4, 0, KEY_POWER),
 73	KEY(0, 1, KEY_LEFT),
 74	KEY(1, 1, KEY_DOWN),
 75	KEY(2, 1, KEY_UP),
 76	KEY(3, 1, KEY_RIGHT),
 77	KEY(4, 1, KEY_ENTER),
 78	KEY(0, 2, KEY_CAMERA),
 79};
 80
 81static const struct matrix_keymap_data palmz71_keymap_data = {
 82	.keymap		= palmz71_keymap,
 83	.keymap_size	= ARRAY_SIZE(palmz71_keymap),
 84};
 85
 86static struct omap_kp_platform_data palmz71_kp_data = {
 87	.rows	= 8,
 88	.cols	= 8,
 89	.keymap_data	= &palmz71_keymap_data,
 90	.rep	= true,
 91	.delay	= 80,
 92};
 93
 94static struct resource palmz71_kp_resources[] = {
 95	[0] = {
 96		.start	= INT_KEYBOARD,
 97		.end	= INT_KEYBOARD,
 98		.flags	= IORESOURCE_IRQ,
 99	},
100};
101
102static struct platform_device palmz71_kp_device = {
103	.name	= "omap-keypad",
104	.id	= -1,
105	.dev	= {
106		.platform_data = &palmz71_kp_data,
107	},
108	.num_resources	= ARRAY_SIZE(palmz71_kp_resources),
109	.resource	= palmz71_kp_resources,
110};
111
112static struct mtd_partition palmz71_rom_partitions[] = {
113	/* PalmOS "Small ROM", contains the bootloader and the debugger */
114	{
115		.name		= "smallrom",
116		.offset		= 0,
117		.size		= 0xa000,
118		.mask_flags	= MTD_WRITEABLE,
119	},
120	/* PalmOS "Big ROM", a filesystem with all the OS code and data */
121	{
122		.name	= "bigrom",
123		.offset	= SZ_128K,
124		/*
125		 * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
126		 * 0x7b0000 bytes in the English-only ("enUS") version.
127		 */
128		.size		= 0x7b0000,
129		.mask_flags	= MTD_WRITEABLE,
130	},
131};
132
133static struct physmap_flash_data palmz71_rom_data = {
134	.width		= 2,
135	.set_vpp	= omap1_set_vpp,
136	.parts		= palmz71_rom_partitions,
137	.nr_parts	= ARRAY_SIZE(palmz71_rom_partitions),
138};
139
140static struct resource palmz71_rom_resource = {
141	.start	= OMAP_CS0_PHYS,
142	.end	= OMAP_CS0_PHYS + SZ_8M - 1,
143	.flags	= IORESOURCE_MEM,
144};
145
146static struct platform_device palmz71_rom_device = {
147	.name	= "physmap-flash",
148	.id	= -1,
149	.dev = {
150		.platform_data = &palmz71_rom_data,
151	},
152	.num_resources	= 1,
153	.resource	= &palmz71_rom_resource,
154};
155
156static struct platform_device palmz71_lcd_device = {
157	.name	= "lcd_palmz71",
158	.id	= -1,
159};
160
161static struct omap_irda_config palmz71_irda_config = {
162	.transceiver_cap	= IR_SIRMODE,
163	.rx_channel		= OMAP_DMA_UART3_RX,
164	.tx_channel		= OMAP_DMA_UART3_TX,
165	.dest_start		= UART3_THR,
166	.src_start		= UART3_RHR,
167	.tx_trigger		= 0,
168	.rx_trigger		= 0,
169};
170
171static struct resource palmz71_irda_resources[] = {
172	[0] = {
173		.start	= INT_UART3,
174		.end	= INT_UART3,
175		.flags	= IORESOURCE_IRQ,
176	},
177};
178
179static struct platform_device palmz71_irda_device = {
180	.name	= "omapirda",
181	.id	= -1,
182	.dev = {
183		.platform_data = &palmz71_irda_config,
184	},
185	.num_resources	= ARRAY_SIZE(palmz71_irda_resources),
186	.resource	= palmz71_irda_resources,
187};
188
189static struct platform_device palmz71_spi_device = {
190	.name	= "spi_palmz71",
191	.id	= -1,
192};
193
194static struct omap_backlight_config palmz71_backlight_config = {
195	.default_intensity	= 0xa0,
196};
197
198static struct platform_device palmz71_backlight_device = {
199	.name	= "omap-bl",
200	.id	= -1,
201	.dev	= {
202		.platform_data = &palmz71_backlight_config,
203	},
204};
205
206static struct platform_device *devices[] __initdata = {
207	&palmz71_rom_device,
208	&palmz71_kp_device,
209	&palmz71_lcd_device,
210	&palmz71_irda_device,
211	&palmz71_spi_device,
212	&palmz71_backlight_device,
213};
214
215static int
216palmz71_get_pendown_state(void)
217{
218	return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
219}
220
221static const struct ads7846_platform_data palmz71_ts_info = {
222	.model			= 7846,
223	.vref_delay_usecs	= 100,	/* internal, no capacitor */
224	.x_plate_ohms		= 419,
225	.y_plate_ohms		= 486,
226	.get_pendown_state	= palmz71_get_pendown_state,
227};
228
229static struct spi_board_info __initdata palmz71_boardinfo[] = { {
230	/* MicroWire (bus 2) CS0 has an ads7846e */
231	.modalias	= "ads7846",
232	.platform_data	= &palmz71_ts_info,
233	.irq		= OMAP_GPIO_IRQ(PALMZ71_PENIRQ_GPIO),
234	.max_speed_hz	= 120000	/* max sample rate at 3V */
235				* 26	/* command + data + overhead */,
236	.bus_num	= 2,
237	.chip_select	= 0,
238} };
239
240static struct omap_usb_config palmz71_usb_config __initdata = {
241	.register_dev	= 1,	/* Mini-B only receptacle */
242	.hmc_mode	= 0,
243	.pins[0]	= 2,
244};
245
246static struct omap_lcd_config palmz71_lcd_config __initdata = {
247	.ctrl_name = "internal",
248};
249
250static struct omap_board_config_kernel palmz71_config[] __initdata = {
251	{OMAP_TAG_LCD,	&palmz71_lcd_config},
252};
253
254static irqreturn_t
255palmz71_powercable(int irq, void *dev_id)
256{
257	if (gpio_get_value(PALMZ71_USBDETECT_GPIO)) {
258		printk(KERN_INFO "PM: Power cable connected\n");
259		irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
260				 IRQ_TYPE_EDGE_FALLING);
261	} else {
262		printk(KERN_INFO "PM: Power cable disconnected\n");
263		irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
264				 IRQ_TYPE_EDGE_RISING);
265	}
266	return IRQ_HANDLED;
267}
268
269static void __init
270omap_mpu_wdt_mode(int mode)
271{
272	if (mode)
273		omap_writew(0x8000, OMAP_WDT_TIMER_MODE);
274	else {
275		omap_writew(0x00f5, OMAP_WDT_TIMER_MODE);
276		omap_writew(0x00a0, OMAP_WDT_TIMER_MODE);
277	}
278}
279
280static void __init
281palmz71_gpio_setup(int early)
282{
283	if (early) {
284		/* Only set GPIO1 so we have a working serial */
285		gpio_direction_output(1, 1);
286	} else {
287		/* Set MMC/SD host WP pin as input */
288		if (gpio_request(PALMZ71_MMC_WP_GPIO, "MMC WP") < 0) {
289			printk(KERN_ERR "Could not reserve WP GPIO!\n");
290			return;
291		}
292		gpio_direction_input(PALMZ71_MMC_WP_GPIO);
293
294		/* Monitor the Power-cable-connected signal */
295		if (gpio_request(PALMZ71_USBDETECT_GPIO, "USB detect") < 0) {
296			printk(KERN_ERR
297				"Could not reserve cable signal GPIO!\n");
298			return;
299		}
300		gpio_direction_input(PALMZ71_USBDETECT_GPIO);
301		if (request_irq(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
302				palmz71_powercable, IRQF_SAMPLE_RANDOM,
303				"palmz71-cable", 0))
304			printk(KERN_ERR
305					"IRQ request for power cable failed!\n");
306		palmz71_powercable(gpio_to_irq(PALMZ71_USBDETECT_GPIO), 0);
307	}
308}
309
310static void __init
311omap_palmz71_init(void)
312{
313	/* mux pins for uarts */
314	omap_cfg_reg(UART1_TX);
315	omap_cfg_reg(UART1_RTS);
316	omap_cfg_reg(UART2_TX);
317	omap_cfg_reg(UART2_RTS);
318	omap_cfg_reg(UART3_TX);
319	omap_cfg_reg(UART3_RX);
320
321	palmz71_gpio_setup(1);
322	omap_mpu_wdt_mode(0);
323
324	omap_board_config = palmz71_config;
325	omap_board_config_size = ARRAY_SIZE(palmz71_config);
326
327	platform_add_devices(devices, ARRAY_SIZE(devices));
328
329	spi_register_board_info(palmz71_boardinfo,
330				ARRAY_SIZE(palmz71_boardinfo));
331	omap1_usb_init(&palmz71_usb_config);
332	omap_serial_init();
333	omap_register_i2c_bus(1, 100, NULL, 0);
334	palmz71_gpio_setup(0);
335}
336
337static void __init
338omap_palmz71_map_io(void)
339{
340	omap1_map_common_io();
341}
342
343MACHINE_START(OMAP_PALMZ71, "OMAP310 based Palm Zire71")
344	.boot_params	= 0x10000100,
345	.map_io		= omap_palmz71_map_io,
346	.reserve	= omap_reserve,
347	.init_irq	= omap_palmz71_init_irq,
348	.init_machine	= omap_palmz71_init,
349	.timer		= &omap1_timer,
350MACHINE_END