Merge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6
[linux-2.6.git] / arch / arm / mach-pxa / zylonite_pxa300.c
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/pca953x.h>
21 #include <linux/gpio.h>
22
23 #include <mach/pxa300.h>
24 #include <plat/i2c.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
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            = IRQ_GPIO(18),
235         }, {
236                 .type           = "pca9539",
237                 .addr           = 0x75,
238                 .platform_data  = &gpio_exp[1],
239                 .irq            = IRQ_GPIO(19),
240         },
241 };
242
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
249 static inline void zylonite_init_i2c(void) {}
250 #endif
251
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 }