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/platform_data/i2c-pxa.h>
21 #include <linux/platform_data/pca953x.h>
22 #include <linux/gpio.h>
23
24 #include "pxa300.h"
25 #include "devices.h"
26 #include "zylonite.h"
27
28 #include "generic.h"
29
30 /* PXA300/PXA310 common configurations */
31 static mfp_cfg_t common_mfp_cfg[] __initdata = {
32 /* LCD */
33 GPIO54_LCD_LDD_0,
34 GPIO55_LCD_LDD_1,
35 GPIO56_LCD_LDD_2,
36 GPIO57_LCD_LDD_3,
37 GPIO58_LCD_LDD_4,
38 GPIO59_LCD_LDD_5,
39 GPIO60_LCD_LDD_6,
40 GPIO61_LCD_LDD_7,
41 GPIO62_LCD_LDD_8,
42 GPIO63_LCD_LDD_9,
43 GPIO64_LCD_LDD_10,
44 GPIO65_LCD_LDD_11,
45 GPIO66_LCD_LDD_12,
46 GPIO67_LCD_LDD_13,
47 GPIO68_LCD_LDD_14,
48 GPIO69_LCD_LDD_15,
49 GPIO70_LCD_LDD_16,
50 GPIO71_LCD_LDD_17,
51 GPIO72_LCD_FCLK,
52 GPIO73_LCD_LCLK,
53 GPIO74_LCD_PCLK,
54 GPIO75_LCD_BIAS,
55 GPIO76_LCD_VSYNC,
56 GPIO127_LCD_CS_N,
57 GPIO20_PWM3_OUT, /* backlight */
58
59 /* BTUART */
60 GPIO111_UART2_RTS,
61 GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL,
62 GPIO113_UART2_TXD,
63 GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH,
64
65 /* STUART */
66 GPIO109_UART3_TXD,
67 GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL,
68
69 /* AC97 */
70 GPIO23_AC97_nACRESET,
71 GPIO24_AC97_SYSCLK,
72 GPIO29_AC97_BITCLK,
73 GPIO25_AC97_SDATA_IN_0,
74 GPIO27_AC97_SDATA_OUT,
75 GPIO28_AC97_SYNC,
76 GPIO17_GPIO, /* SDATA_IN_1 but unused - configure to GPIO */
77
78 /* SSP3 */
79 GPIO91_SSP3_SCLK,
80 GPIO92_SSP3_FRM,
81 GPIO93_SSP3_TXD,
82 GPIO94_SSP3_RXD,
83
84 /* WM9713 IRQ */
85 GPIO26_GPIO,
86
87 /* Keypad */
88 GPIO107_KP_DKIN_0 | MFP_LPM_EDGE_BOTH,
89 GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
90 GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
91 GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
92 GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
93 GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
94 GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
95 GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
96 GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
97 GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
98 GPIO121_KP_MKOUT_0,
99 GPIO122_KP_MKOUT_1,
100 GPIO123_KP_MKOUT_2,
101 GPIO124_KP_MKOUT_3,
102 GPIO125_KP_MKOUT_4,
103 GPIO4_2_KP_MKOUT_5,
104 GPIO5_2_KP_MKOUT_6,
105 GPIO6_2_KP_MKOUT_7,
106
107 /* MMC1 */
108 GPIO3_MMC1_DAT0,
109 GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
110 GPIO5_MMC1_DAT2,
111 GPIO6_MMC1_DAT3,
112 GPIO7_MMC1_CLK,
113 GPIO8_MMC1_CMD, /* CMD0 for slot 0 */
114 GPIO15_GPIO, /* CMD1 default as GPIO for slot 0 */
115
116 /* MMC2 */
117 GPIO9_MMC2_DAT0,
118 GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
119 GPIO11_MMC2_DAT2,
120 GPIO12_MMC2_DAT3,
121 GPIO13_MMC2_CLK,
122 GPIO14_MMC2_CMD,
123
124 /* USB Host */
125 GPIO0_2_USBH_PEN,
126 GPIO1_2_USBH_PWR,
127
128 /* Standard I2C */
129 GPIO21_I2C_SCL,
130 GPIO22_I2C_SDA,
131
132 /* GPIO */
133 GPIO18_GPIO | MFP_PULL_HIGH, /* GPIO Expander #0 INT_N */
134 GPIO19_GPIO | MFP_PULL_HIGH, /* GPIO Expander #1 INT_N */
135 };
136
137 static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
138 /* FFUART */
139 GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
140 GPIO31_UART1_TXD,
141 GPIO32_UART1_CTS,
142 GPIO37_UART1_RTS,
143 GPIO33_UART1_DCD,
144 GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
145 GPIO35_UART1_RI,
146 GPIO36_UART1_DTR,
147
148 /* Ethernet */
149 GPIO2_nCS3,
150 GPIO99_GPIO,
151 };
152
153 static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
154 /* FFUART */
155 GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL,
156 GPIO100_UART1_TXD,
157 GPIO101_UART1_CTS,
158 GPIO106_UART1_RTS,
159
160 /* Ethernet */
161 GPIO2_nCS3,
162 GPIO102_GPIO,
163
164 /* MMC3 */
165 GPIO7_2_MMC3_DAT0,
166 GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH,
167 GPIO9_2_MMC3_DAT2,
168 GPIO10_2_MMC3_DAT3,
169 GPIO103_MMC3_CLK,
170 GPIO105_MMC3_CMD,
171 };
172
173 #define NUM_LCD_DETECT_PINS 7
174
175 static int lcd_detect_pins[] __initdata = {
176 MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */
177 MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
178 MFP_PIN_GPIO75, /* LCD_BIAS - LCDID[4] */
179 MFP_PIN_GPIO73, /* LCD_LCLK - LCDID[3] */
180 MFP_PIN_GPIO72, /* LCD_FCLK - LCDID[2] */
181 MFP_PIN_GPIO127,/* LCD_CS_N - LCDID[1] */
182 MFP_PIN_GPIO76, /* LCD_VSYNC - LCDID[0] */
183 };
184
zylonite_detect_lcd_panel(void)185 static void __init zylonite_detect_lcd_panel(void)
186 {
187 unsigned long mfpr_save[NUM_LCD_DETECT_PINS];
188 int i, gpio, id = 0;
189
190 /* save the original MFP settings of these pins and configure
191 * them as GPIO Input, DS01X, Pull Neither, Edge Clear
192 */
193 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
194 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
195 pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
196 }
197
198 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
199 id = id << 1;
200 gpio = mfp_to_gpio(lcd_detect_pins[i]);
201 gpio_request(gpio, "LCD_ID_PINS");
202 gpio_direction_input(gpio);
203
204 if (gpio_get_value(gpio))
205 id = id | 0x1;
206 gpio_free(gpio);
207 }
208
209 /* lcd id, flush out bit 1 */
210 lcd_id = id & 0x3d;
211
212 /* lcd orientation, portrait or landscape */
213 lcd_orientation = (id >> 6) & 0x1;
214
215 /* restore the original MFP settings */
216 for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
217 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
218 }
219
220 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
221 static struct pca953x_platform_data gpio_exp[] = {
222 [0] = {
223 .gpio_base = 128,
224 },
225 [1] = {
226 .gpio_base = 144,
227 },
228 };
229
230 static struct i2c_board_info zylonite_i2c_board_info[] = {
231 {
232 .type = "pca9539",
233 .addr = 0x74,
234 .platform_data = &gpio_exp[0],
235 .irq = PXA_GPIO_TO_IRQ(18),
236 }, {
237 .type = "pca9539",
238 .addr = 0x75,
239 .platform_data = &gpio_exp[1],
240 .irq = PXA_GPIO_TO_IRQ(19),
241 },
242 };
243
zylonite_init_i2c(void)244 static void __init zylonite_init_i2c(void)
245 {
246 pxa_set_i2c_info(NULL);
247 i2c_register_board_info(0, ARRAY_AND_SIZE(zylonite_i2c_board_info));
248 }
249 #else
zylonite_init_i2c(void)250 static inline void zylonite_init_i2c(void) {}
251 #endif
252
zylonite_pxa300_init(void)253 void __init zylonite_pxa300_init(void)
254 {
255 if (cpu_is_pxa300() || cpu_is_pxa310()) {
256 /* initialize MFP */
257 pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));
258
259 /* detect LCD panel */
260 zylonite_detect_lcd_panel();
261
262 /* WM9713 IRQ */
263 wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO26);
264
265 zylonite_init_i2c();
266 }
267
268 if (cpu_is_pxa300()) {
269 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
270 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
271 }
272
273 if (cpu_is_pxa310()) {
274 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
275 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
276 }
277
278 /* GPIOs for Debug LEDs */
279 gpio_debug_led1 = EXT_GPIO(25);
280 gpio_debug_led2 = EXT_GPIO(26);
281 }
282
