1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * linux/arch/arm/mach-omap1/board-palmz71.c
  4 *
  5 * Modified from board-generic.c
  6 *
  7 * Support for the Palm Zire71 PDA.
  8 *
  9 * Original version : Laurent Gonzalez
 10 *
 11 * Modified for zire71 : Marek Vasut
 12 */
 13
 14#include <linux/delay.h>
 15#include <linux/gpio.h>
 16#include <linux/kernel.h>
 17#include <linux/init.h>
 18#include <linux/platform_device.h>
 19#include <linux/notifier.h>
 20#include <linux/clk.h>
 21#include <linux/irq.h>
 22#include <linux/input.h>
 23#include <linux/interrupt.h>
 24#include <linux/mtd/mtd.h>
 25#include <linux/mtd/partitions.h>
 26#include <linux/mtd/physmap.h>
 27#include <linux/omapfb.h>
 28#include <linux/spi/spi.h>
 29#include <linux/spi/ads7846.h>
 30#include <linux/platform_data/omap1_bl.h>
 31
 32#include <asm/mach-types.h>
 33#include <asm/mach/arch.h>
 34#include <asm/mach/map.h>
 35
 36#include "flash.h"
 37#include <mach/mux.h>
 38#include <linux/omap-dma.h>
 39#include <mach/tc.h>
 40#include <linux/platform_data/keypad-omap.h>
 41
 42#include <mach/hardware.h>
 43#include <mach/usb.h>
 44
 45#include "common.h"
 46
 47#define PALMZ71_USBDETECT_GPIO	0
 48#define PALMZ71_PENIRQ_GPIO	6
 49#define PALMZ71_MMC_WP_GPIO	8
 50#define PALMZ71_HDQ_GPIO 	11
 51
 52#define PALMZ71_HOTSYNC_GPIO	OMAP_MPUIO(1)
 53#define PALMZ71_CABLE_GPIO	OMAP_MPUIO(2)
 54#define PALMZ71_SLIDER_GPIO	OMAP_MPUIO(3)
 55#define PALMZ71_MMC_IN_GPIO	OMAP_MPUIO(4)
 56
 57static const unsigned int palmz71_keymap[] = {
 58	KEY(0, 0, KEY_F1),
 59	KEY(1, 0, KEY_F2),
 60	KEY(2, 0, KEY_F3),
 61	KEY(3, 0, KEY_F4),
 62	KEY(4, 0, KEY_POWER),
 63	KEY(0, 1, KEY_LEFT),
 64	KEY(1, 1, KEY_DOWN),
 65	KEY(2, 1, KEY_UP),
 66	KEY(3, 1, KEY_RIGHT),
 67	KEY(4, 1, KEY_ENTER),
 68	KEY(0, 2, KEY_CAMERA),
 69};
 70
 71static const struct matrix_keymap_data palmz71_keymap_data = {
 72	.keymap		= palmz71_keymap,
 73	.keymap_size	= ARRAY_SIZE(palmz71_keymap),
 74};
 75
 76static struct omap_kp_platform_data palmz71_kp_data = {
 77	.rows	= 8,
 78	.cols	= 8,
 79	.keymap_data	= &palmz71_keymap_data,
 80	.rep	= true,
 81	.delay	= 80,
 82};
 83
 84static struct resource palmz71_kp_resources[] = {
 85	[0] = {
 86		.start	= INT_KEYBOARD,
 87		.end	= INT_KEYBOARD,
 88		.flags	= IORESOURCE_IRQ,
 89	},
 90};
 91
 92static struct platform_device palmz71_kp_device = {
 93	.name	= "omap-keypad",
 94	.id	= -1,
 95	.dev	= {
 96		.platform_data = &palmz71_kp_data,
 97	},
 98	.num_resources	= ARRAY_SIZE(palmz71_kp_resources),
 99	.resource	= palmz71_kp_resources,
100};
101
102static struct mtd_partition palmz71_rom_partitions[] = {
103	/* PalmOS "Small ROM", contains the bootloader and the debugger */
104	{
105		.name		= "smallrom",
106		.offset		= 0,
107		.size		= 0xa000,
108		.mask_flags	= MTD_WRITEABLE,
109	},
110	/* PalmOS "Big ROM", a filesystem with all the OS code and data */
111	{
112		.name	= "bigrom",
113		.offset	= SZ_128K,
114		/*
115		 * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
116		 * 0x7b0000 bytes in the English-only ("enUS") version.
117		 */
118		.size		= 0x7b0000,
119		.mask_flags	= MTD_WRITEABLE,
120	},
121};
122
123static struct physmap_flash_data palmz71_rom_data = {
124	.width		= 2,
125	.set_vpp	= omap1_set_vpp,
126	.parts		= palmz71_rom_partitions,
127	.nr_parts	= ARRAY_SIZE(palmz71_rom_partitions),
128};
129
130static struct resource palmz71_rom_resource = {
131	.start	= OMAP_CS0_PHYS,
132	.end	= OMAP_CS0_PHYS + SZ_8M - 1,
133	.flags	= IORESOURCE_MEM,
134};
135
136static struct platform_device palmz71_rom_device = {
137	.name	= "physmap-flash",
138	.id	= -1,
139	.dev = {
140		.platform_data = &palmz71_rom_data,
141	},
142	.num_resources	= 1,
143	.resource	= &palmz71_rom_resource,
144};
145
146static struct platform_device palmz71_lcd_device = {
147	.name	= "lcd_palmz71",
148	.id	= -1,
149};
150
151static struct platform_device palmz71_spi_device = {
152	.name	= "spi_palmz71",
153	.id	= -1,
154};
155
156static struct omap_backlight_config palmz71_backlight_config = {
157	.default_intensity	= 0xa0,
158};
159
160static struct platform_device palmz71_backlight_device = {
161	.name	= "omap-bl",
162	.id	= -1,
163	.dev	= {
164		.platform_data = &palmz71_backlight_config,
165	},
166};
167
168static struct platform_device *devices[] __initdata = {
169	&palmz71_rom_device,
170	&palmz71_kp_device,
171	&palmz71_lcd_device,
172	&palmz71_spi_device,
173	&palmz71_backlight_device,
174};
175
176static int
177palmz71_get_pendown_state(void)
178{
179	return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
180}
181
182static const struct ads7846_platform_data palmz71_ts_info = {
183	.model			= 7846,
184	.vref_delay_usecs	= 100,	/* internal, no capacitor */
185	.x_plate_ohms		= 419,
186	.y_plate_ohms		= 486,
187	.get_pendown_state	= palmz71_get_pendown_state,
188};
189
190static struct spi_board_info __initdata palmz71_boardinfo[] = { {
191	/* MicroWire (bus 2) CS0 has an ads7846e */
192	.modalias	= "ads7846",
193	.platform_data	= &palmz71_ts_info,
194	.max_speed_hz	= 120000	/* max sample rate at 3V */
195				* 26	/* command + data + overhead */,
196	.bus_num	= 2,
197	.chip_select	= 0,
198} };
199
200static struct omap_usb_config palmz71_usb_config __initdata = {
201	.register_dev	= 1,	/* Mini-B only receptacle */
202	.hmc_mode	= 0,
203	.pins[0]	= 2,
204};
205
206static const struct omap_lcd_config palmz71_lcd_config __initconst = {
207	.ctrl_name = "internal",
208};
209
210static irqreturn_t
211palmz71_powercable(int irq, void *dev_id)
212{
213	if (gpio_get_value(PALMZ71_USBDETECT_GPIO)) {
214		printk(KERN_INFO "PM: Power cable connected\n");
215		irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
216				 IRQ_TYPE_EDGE_FALLING);
217	} else {
218		printk(KERN_INFO "PM: Power cable disconnected\n");
219		irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
220				 IRQ_TYPE_EDGE_RISING);
221	}
222	return IRQ_HANDLED;
223}
224
225static void __init
226omap_mpu_wdt_mode(int mode)
227{
228	if (mode)
229		omap_writew(0x8000, OMAP_WDT_TIMER_MODE);
230	else {
231		omap_writew(0x00f5, OMAP_WDT_TIMER_MODE);
232		omap_writew(0x00a0, OMAP_WDT_TIMER_MODE);
233	}
234}
235
236static void __init
237palmz71_gpio_setup(int early)
238{
239	if (early) {
240		/* Only set GPIO1 so we have a working serial */
241		gpio_direction_output(1, 1);
242	} else {
243		/* Set MMC/SD host WP pin as input */
244		if (gpio_request(PALMZ71_MMC_WP_GPIO, "MMC WP") < 0) {
245			printk(KERN_ERR "Could not reserve WP GPIO!\n");
246			return;
247		}
248		gpio_direction_input(PALMZ71_MMC_WP_GPIO);
249
250		/* Monitor the Power-cable-connected signal */
251		if (gpio_request(PALMZ71_USBDETECT_GPIO, "USB detect") < 0) {
252			printk(KERN_ERR
253				"Could not reserve cable signal GPIO!\n");
254			return;
255		}
256		gpio_direction_input(PALMZ71_USBDETECT_GPIO);
257		if (request_irq(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
258				palmz71_powercable, 0, "palmz71-cable", NULL))
259			printk(KERN_ERR
260					"IRQ request for power cable failed!\n");
261		palmz71_powercable(gpio_to_irq(PALMZ71_USBDETECT_GPIO), NULL);
262	}
263}
264
265static void __init
266omap_palmz71_init(void)
267{
268	/* mux pins for uarts */
269	omap_cfg_reg(UART1_TX);
270	omap_cfg_reg(UART1_RTS);
271	omap_cfg_reg(UART2_TX);
272	omap_cfg_reg(UART2_RTS);
273	omap_cfg_reg(UART3_TX);
274	omap_cfg_reg(UART3_RX);
275
276	palmz71_gpio_setup(1);
277	omap_mpu_wdt_mode(0);
278
279	platform_add_devices(devices, ARRAY_SIZE(devices));
280
281	palmz71_boardinfo[0].irq = gpio_to_irq(PALMZ71_PENIRQ_GPIO);
282	spi_register_board_info(palmz71_boardinfo,
283				ARRAY_SIZE(palmz71_boardinfo));
284	omap1_usb_init(&palmz71_usb_config);
285	omap_serial_init();
286	omap_register_i2c_bus(1, 100, NULL, 0);
287	palmz71_gpio_setup(0);
288
289	omapfb_set_lcd_config(&palmz71_lcd_config);
290}
291
292MACHINE_START(OMAP_PALMZ71, "OMAP310 based Palm Zire71")
293	.atag_offset	= 0x100,
294	.map_io		= omap15xx_map_io,
295	.init_early     = omap1_init_early,
296	.init_irq	= omap1_init_irq,
297	.handle_irq	= omap1_handle_irq,
298	.init_machine	= omap_palmz71_init,
299	.init_late	= omap1_init_late,
300	.init_time	= omap1_timer_init,
301	.restart	= omap1_restart,
302MACHINE_END