summaryrefslogtreecommitdiff
path: root/arch/arm/mach-omap2/board-am3517evm.c
blob: c1c4389fbd8f5294d599943e338cf5d6ca748c40 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
/*
 * linux/arch/arm/mach-omap2/board-am3517evm.c
 *
 * Copyright (C) 2009 Texas Instruments Incorporated
 * Author: Ranjith Lohithakshan <ranjithl@ti.com>
 *
 * Based on mach-omap2/board-omap3evm.c
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as  published by the
 * Free Software Foundation version 2.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
 * whether express or implied; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/i2c/pca953x.h>

#include <mach/hardware.h>
#include <mach/am35xx.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>

#include <plat/board.h>
#include <plat/common.h>
#include <plat/usb.h>
#include <plat/display.h>

#include "mux.h"

#define LCD_PANEL_PWR		176
#define LCD_PANEL_BKLIGHT_PWR	182
#define LCD_PANEL_PWM		181

static struct i2c_board_info __initdata am3517evm_i2c_boardinfo[] = {
	{
		I2C_BOARD_INFO("s35390a", 0x30),
		.type		= "s35390a",
	},
};

/*
 * RTC - S35390A
 */
#define GPIO_RTCS35390A_IRQ	55

static void __init am3517_evm_rtc_init(void)
{
	int r;

	omap_mux_init_gpio(GPIO_RTCS35390A_IRQ, OMAP_PIN_INPUT_PULLUP);
	r = gpio_request(GPIO_RTCS35390A_IRQ, "rtcs35390a-irq");
	if (r < 0) {
		printk(KERN_WARNING "failed to request GPIO#%d\n",
				GPIO_RTCS35390A_IRQ);
		return;
	}
	r = gpio_direction_input(GPIO_RTCS35390A_IRQ);
	if (r < 0) {
		printk(KERN_WARNING "GPIO#%d cannot be configured as input\n",
				GPIO_RTCS35390A_IRQ);
		gpio_free(GPIO_RTCS35390A_IRQ);
		return;
	}
	am3517evm_i2c_boardinfo[0].irq = gpio_to_irq(GPIO_RTCS35390A_IRQ);
}

/*
 * I2C GPIO Expander - TCA6416
 */

/* Mounted on Base-Board */
static struct pca953x_platform_data am3517evm_gpio_expander_info_0 = {
	.gpio_base	= OMAP_MAX_GPIO_LINES,
};
static struct i2c_board_info __initdata am3517evm_tca6416_info_0[] = {
	{
		I2C_BOARD_INFO("tca6416", 0x21),
		.platform_data = &am3517evm_gpio_expander_info_0,
	},
};

/* Mounted on UI Card */
static struct pca953x_platform_data am3517evm_ui_gpio_expander_info_1 = {
	.gpio_base	= OMAP_MAX_GPIO_LINES + 16,
};
static struct pca953x_platform_data am3517evm_ui_gpio_expander_info_2 = {
	.gpio_base	= OMAP_MAX_GPIO_LINES + 32,
};
static struct i2c_board_info __initdata am3517evm_ui_tca6416_info[] = {
	{
		I2C_BOARD_INFO("tca6416", 0x20),
		.platform_data = &am3517evm_ui_gpio_expander_info_1,
	},
	{
		I2C_BOARD_INFO("tca6416", 0x21),
		.platform_data = &am3517evm_ui_gpio_expander_info_2,
	},
};

static int __init am3517_evm_i2c_init(void)
{
	omap_register_i2c_bus(1, 400, NULL, 0);
	omap_register_i2c_bus(2, 400, am3517evm_tca6416_info_0,
			ARRAY_SIZE(am3517evm_tca6416_info_0));
	omap_register_i2c_bus(3, 400, am3517evm_ui_tca6416_info,
			ARRAY_SIZE(am3517evm_ui_tca6416_info));

	return 0;
}

static int lcd_enabled;
static int dvi_enabled;

static void __init am3517_evm_display_init(void)
{
	int r;

	omap_mux_init_gpio(LCD_PANEL_PWR, OMAP_PIN_INPUT_PULLUP);
	omap_mux_init_gpio(LCD_PANEL_BKLIGHT_PWR, OMAP_PIN_INPUT_PULLDOWN);
	omap_mux_init_gpio(LCD_PANEL_PWM, OMAP_PIN_INPUT_PULLDOWN);
	/*
	 * Enable GPIO 182 = LCD Backlight Power
	 */
	r = gpio_request(LCD_PANEL_BKLIGHT_PWR, "lcd_backlight_pwr");
	if (r) {
		printk(KERN_ERR "failed to get lcd_backlight_pwr\n");
		return;
	}
	gpio_direction_output(LCD_PANEL_BKLIGHT_PWR, 1);
	/*
	 * Enable GPIO 181 = LCD Panel PWM
	 */
	r = gpio_request(LCD_PANEL_PWM, "lcd_pwm");
	if (r) {
		printk(KERN_ERR "failed to get lcd_pwm\n");
		goto err_1;
	}
	gpio_direction_output(LCD_PANEL_PWM, 1);
	/*
	 * Enable GPIO 176 = LCD Panel Power enable pin
	 */
	r = gpio_request(LCD_PANEL_PWR, "lcd_panel_pwr");
	if (r) {
		printk(KERN_ERR "failed to get lcd_panel_pwr\n");
		goto err_2;
	}
	gpio_direction_output(LCD_PANEL_PWR, 1);

	printk(KERN_INFO "Display initialized successfully\n");
	return;

err_2:
	gpio_free(LCD_PANEL_PWM);
err_1:
	gpio_free(LCD_PANEL_BKLIGHT_PWR);
}

static int am3517_evm_panel_enable_lcd(struct omap_dss_device *dssdev)
{
	if (dvi_enabled) {
		printk(KERN_ERR "cannot enable LCD, DVI is enabled\n");
		return -EINVAL;
	}
	gpio_set_value(LCD_PANEL_PWR, 1);
	lcd_enabled = 1;

	return 0;
}

static void am3517_evm_panel_disable_lcd(struct omap_dss_device *dssdev)
{
	gpio_set_value(LCD_PANEL_PWR, 0);
	lcd_enabled = 0;
}

static struct omap_dss_device am3517_evm_lcd_device = {
	.type			= OMAP_DISPLAY_TYPE_DPI,
	.name			= "lcd",
	.driver_name		= "sharp_lq_panel",
	.phy.dpi.data_lines 	= 16,
	.platform_enable	= am3517_evm_panel_enable_lcd,
	.platform_disable	= am3517_evm_panel_disable_lcd,
};

static int am3517_evm_panel_enable_tv(struct omap_dss_device *dssdev)
{
	return 0;
}

static void am3517_evm_panel_disable_tv(struct omap_dss_device *dssdev)
{
}

static struct omap_dss_device am3517_evm_tv_device = {
	.type 			= OMAP_DISPLAY_TYPE_VENC,
	.name 			= "tv",
	.driver_name		= "venc",
	.phy.venc.type		= OMAP_DSS_VENC_TYPE_SVIDEO,
	.platform_enable	= am3517_evm_panel_enable_tv,
	.platform_disable	= am3517_evm_panel_disable_tv,
};

static int am3517_evm_panel_enable_dvi(struct omap_dss_device *dssdev)
{
	if (lcd_enabled) {
		printk(KERN_ERR "cannot enable DVI, LCD is enabled\n");
		return -EINVAL;
	}
	dvi_enabled = 1;

	return 0;
}

static void am3517_evm_panel_disable_dvi(struct omap_dss_device *dssdev)
{
	dvi_enabled = 0;
}

static struct omap_dss_device am3517_evm_dvi_device = {
	.type			= OMAP_DISPLAY_TYPE_DPI,
	.name			= "dvi",
	.driver_name		= "generic_panel",
	.phy.dpi.data_lines	= 24,
	.platform_enable	= am3517_evm_panel_enable_dvi,
	.platform_disable	= am3517_evm_panel_disable_dvi,
};

static struct omap_dss_device *am3517_evm_dss_devices[] = {
	&am3517_evm_lcd_device,
	&am3517_evm_tv_device,
	&am3517_evm_dvi_device,
};

static struct omap_dss_board_info am3517_evm_dss_data = {
	.num_devices	= ARRAY_SIZE(am3517_evm_dss_devices),
	.devices	= am3517_evm_dss_devices,
	.default_device	= &am3517_evm_lcd_device,
};

struct platform_device am3517_evm_dss_device = {
	.name		= "omapdss",
	.id		= -1,
	.dev		= {
		.platform_data	= &am3517_evm_dss_data,
	},
};

/*
 * Board initialization
 */
static struct omap_board_config_kernel am3517_evm_config[] __initdata = {
};

static struct platform_device *am3517_evm_devices[] __initdata = {
	&am3517_evm_dss_device,
};

static void __init am3517_evm_init_irq(void)
{
	omap_board_config = am3517_evm_config;
	omap_board_config_size = ARRAY_SIZE(am3517_evm_config);

	omap2_init_common_hw(NULL, NULL);
	omap_init_irq();
	omap_gpio_init();
}

static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
	.port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
	.port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
	.port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,

	.phy_reset  = true,
	.reset_gpio_port[0]  = 57,
	.reset_gpio_port[1]  = -EINVAL,
	.reset_gpio_port[2]  = -EINVAL
};

#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
	{ .reg_offset = OMAP_MUX_TERMINATOR },
};
#else
#define board_mux	NULL
#endif

static void __init am3517_evm_init(void)
{
	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);

	am3517_evm_i2c_init();
	platform_add_devices(am3517_evm_devices,
				ARRAY_SIZE(am3517_evm_devices));

	omap_serial_init();

	/* Configure GPIO for EHCI port */
	omap_mux_init_gpio(57, OMAP_PIN_OUTPUT);
	usb_ehci_init(&ehci_pdata);
	/* DSS */
	am3517_evm_display_init();

	/* RTC - S35390A */
	am3517_evm_rtc_init();

	i2c_register_board_info(1, am3517evm_i2c_boardinfo,
				ARRAY_SIZE(am3517evm_i2c_boardinfo));
}

static void __init am3517_evm_map_io(void)
{
	omap2_set_globals_343x();
	omap34xx_map_common_io();
}

MACHINE_START(OMAP3517EVM, "OMAP3517/AM3517 EVM")
	.phys_io	= 0x48000000,
	.io_pg_offst	= ((0xd8000000) >> 18) & 0xfffc,
	.boot_params	= 0x80000100,
	.map_io		= am3517_evm_map_io,
	.init_irq	= am3517_evm_init_irq,
	.init_machine	= am3517_evm_init,
	.timer		= &omap_timer,
MACHINE_END