1 /*
2 * linux/arch/arm/mach-pxa/zylonite_pxa300.c
3 *
4 * PXA300/PXA310 specific support code for the
5 * PXA3xx Development Platform (aka Zylonite)
6 *
7 * Copyright (C) 2007 Marvell Internation Ltd.
8 * 2007-08-21: eric miao <eric.miao@marvell.com>
9 * initial version
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
14 */
15
16 #include <linux/module.h>
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19 #include <linux/i2c.h>
20 #include <linux/i2c/pxa-i2c.h>
21 #include <linux/i2c/pca953x.h>
22 #include <linux/gpio.h>
23
24 #include <mach/pxa300.h>
25 #include <mach/zylonite.h>
26
27 #include "generic.h"
28
29 /* PXA300/PXA310 common configurations */
30 static mfp_cfg_t common_mfp_cfg[] __initdata = {
31 /* LCD */
32 GPIO54_LCD_LDD_0,
33 GPIO55_LCD_LDD_1,
34 GPIO56_LCD_LDD_2,
35 GPIO57_LCD_LDD_3,
36 GPIO58_LCD_LDD_4,
37 GPIO59_LCD_LDD_5,
38 GPIO60_LCD_LDD_6,
39 GPIO61_LCD_LDD_7,
40 GPIO62_LCD_LDD_8,
41 GPIO63_LCD_LDD_9,
42 GPIO64_LCD_LDD_10,
43 GPIO65_LCD_LDD_11,
44 GPIO66_LCD_LDD_12,
45 GPIO67_LCD_LDD_13,
46 GPIO68_LCD_LDD_14,
47 GPIO69_LCD_LDD_15,
48 GPIO70_LCD_LDD_16,
49 GPIO71_LCD_LDD_17,
50 GPIO72_LCD_FCLK,
51 GPIO73_LCD_LCLK,
52 GPIO74_LCD_PCLK,
53 GPIO75_LCD_BIAS,
54 GPIO76_LCD_VSYNC,
55 GPIO127_LCD_CS_N,
56 GPIO20_PWM3_OUT, /* backlight */
57
58 /* BTUART */
59 GPIO111_UART2_RTS,
60 GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL,
61 GPIO113_UART2_TXD,
62 GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH,
63
64 /* STUART */
65 GPIO109_UART3_TXD,
66 GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL,
67
68 /* AC97 */
69 GPIO23_AC97_nACRESET,
70 GPIO24_AC97_SYSCLK,
71 GPIO29_AC97_BITCLK,
72 GPIO25_AC97_SDATA_IN_0,
73 GPIO27_AC97_SDATA_OUT,
74 GPIO28_AC97_SYNC,
75 GPIO17_GPIO, /* SDATA_IN_1 but unused - configure to GPIO */
76
77 /* SSP3 */
78 GPIO91_SSP3_SCLK,
79 GPIO92_SSP3_FRM,
80 GPIO93_SSP3_TXD,
81 GPIO94_SSP3_RXD,
82
83 /* WM9713 IRQ */
84 GPIO26_GPIO,
85
86 /* Keypad */
87 GPIO107_KP_DKIN_0 | MFP_LPM_EDGE_BOTH,
88 GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
89 GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
90 GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
91 GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
92 GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
93 GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
94 GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
95 GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
96 GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
97 GPIO121_KP_MKOUT_0,
98 GPIO122_KP_MKOUT_1,
99 GPIO123_KP_MKOUT_2,
100 GPIO124_KP_MKOUT_3,
101 GPIO125_KP_MKOUT_4,
102 GPIO4_2_KP_MKOUT_5,
103 GPIO5_2_KP_MKOUT_6,
104 GPIO6_2_KP_MKOUT_7,
105
106 /* MMC1 */
107 GPIO3_MMC1_DAT0,
108 GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
109 GPIO5_MMC1_DAT2,
110 GPIO6_MMC1_DAT3,
111 GPIO7_MMC1_CLK,
112 GPIO8_MMC1_CMD, /* CMD0 for slot 0 */
113 GPIO15_GPIO, /* CMD1 default as GPIO for slot 0 */
114
115 /* MMC2 */
116 GPIO9_MMC2_DAT0,
117 GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
118 GPIO11_MMC2_DAT2,
119 GPIO12_MMC2_DAT3,
120 GPIO13_MMC2_CLK,
121 GPIO14_MMC2_CMD,
122
123 /* USB Host */
124 GPIO0_2_USBH_PEN,
125 GPIO1_2_USBH_PWR,
126
127 /* Standard I2C */
128 GPIO21_I2C_SCL,
129 GPIO22_I2C_SDA,
130
131 /* GPIO */
132 GPIO18_GPIO | MFP_PULL_HIGH, /* GPIO Expander #0 INT_N */
133 GPIO19_GPIO | MFP_PULL_HIGH, /* GPIO Expander #1 INT_N */
134 };
135
136 static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
137 /* FFUART */
138 GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
139 GPIO31_UART1_TXD,
140 GPIO32_UART1_CTS,
141 GPIO37_UART1_RTS,
142 GPIO33_UART1_DCD,
143 GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
144 GPIO35_UART1_RI,
145 GPIO36_UART1_DTR,
146
147 /* Ethernet */
148 GPIO2_nCS3,
149 GPIO99_GPIO,
150 };
151
152 static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
153 /* FFUART */
154 GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL,
155 GPIO100_UART1_TXD,
156 GPIO101_UART1_CTS,
157 GPIO106_UART1_RTS,
158
159 /* Ethernet */
160 GPIO2_nCS3,
161 GPIO102_GPIO,
162
163 /* MMC3 */
164 GPIO7_2_MMC3_DAT0,
165 GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH,
166 GPIO9_2_MMC3_DAT2,
167 GPIO10_2_MMC3_DAT3,
168 GPIO103_MMC3_CLK,
169 GPIO105_MMC3_CMD,
170 };
171
172 #define NUM_LCD_DETECT_PINS 7
173
174 static int lcd_detect_pins[] __initdata = {
175 MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */
176 MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
177 MFP_PIN_GPIO75, /* LCD_BIAS - LCDID[4] */
178 MFP_PIN_GPIO73, /* LCD_LCLK - LCDID[3] */
179 MFP_PIN_GPIO72, /* LCD_FCLK - LCDID[2] */
180 MFP_PIN_GPIO127,/* LCD_CS_N - LCDID[1] */
181 MFP_PIN_GPIO76, /* LCD_VSYNC - LCDID[0] */
182 };
183
zylonite_detect_lcd_panel(void)184 static void __init zylonite_detect_lcd_panel(void)
185 {
186 unsigned long mfpr_save[NUM_LCD_DETECT_PINS];
187 int i, gpio, id = 0;
188
189 /* save the original MFP settings of these pins and configure
190 * them as GPIO Input, DS01X, Pull Neither, Edge Clear
191 */
192 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
193 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
194 pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
195 }
196
197 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
198 id = id << 1;
199 gpio = mfp_to_gpio(lcd_detect_pins[i]);
200 gpio_request(gpio, "LCD_ID_PINS");
201 gpio_direction_input(gpio);
202
203 if (gpio_get_value(gpio))
204 id = id | 0x1;
205 gpio_free(gpio);
206 }
207
208 /* lcd id, flush out bit 1 */
209 lcd_id = id & 0x3d;
210
211 /* lcd orientation, portrait or landscape */
212 lcd_orientation = (id >> 6) & 0x1;
213
214 /* restore the original MFP settings */
215 for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
216 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
217 }
218
219 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
220 static struct pca953x_platform_data gpio_exp[] = {
221 [0] = {
222 .gpio_base = 128,
223 },
224 [1] = {
225 .gpio_base = 144,
226 },
227 };
228
229 static struct i2c_board_info zylonite_i2c_board_info[] = {
230 {
231 .type = "pca9539",
232 .addr = 0x74,
233 .platform_data = &gpio_exp[0],
234 .irq = PXA_GPIO_TO_IRQ(18),
235 }, {
236 .type = "pca9539",
237 .addr = 0x75,
238 .platform_data = &gpio_exp[1],
239 .irq = PXA_GPIO_TO_IRQ(19),
240 },
241 };
242
zylonite_init_i2c(void)243 static void __init zylonite_init_i2c(void)
244 {
245 pxa_set_i2c_info(NULL);
246 i2c_register_board_info(0, ARRAY_AND_SIZE(zylonite_i2c_board_info));
247 }
248 #else
zylonite_init_i2c(void)249 static inline void zylonite_init_i2c(void) {}
250 #endif
251
zylonite_pxa300_init(void)252 void __init zylonite_pxa300_init(void)
253 {
254 if (cpu_is_pxa300() || cpu_is_pxa310()) {
255 /* initialize MFP */
256 pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));
257
258 /* detect LCD panel */
259 zylonite_detect_lcd_panel();
260
261 /* WM9713 IRQ */
262 wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO26);
263
264 zylonite_init_i2c();
265 }
266
267 if (cpu_is_pxa300()) {
268 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
269 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
270 }
271
272 if (cpu_is_pxa310()) {
273 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
274 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
275 }
276
277 /* GPIOs for Debug LEDs */
278 gpio_debug_led1 = EXT_GPIO(25);
279 gpio_debug_led2 = EXT_GPIO(26);
280 }
281