Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-2.6] / 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
22 #include <asm/gpio.h>
23 #include <mach/mfp-pxa300.h>
24 #include <mach/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
76         /* SSP3 */
77         GPIO91_SSP3_SCLK,
78         GPIO92_SSP3_FRM,
79         GPIO93_SSP3_TXD,
80         GPIO94_SSP3_RXD,
81
82         /* WM9713 IRQ */
83         GPIO26_GPIO,
84
85         /* Keypad */
86         GPIO107_KP_DKIN_0 | MFP_LPM_EDGE_BOTH,
87         GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
88         GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
89         GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
90         GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
91         GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
92         GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
93         GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
94         GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
95         GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
96         GPIO121_KP_MKOUT_0,
97         GPIO122_KP_MKOUT_1,
98         GPIO123_KP_MKOUT_2,
99         GPIO124_KP_MKOUT_3,
100         GPIO125_KP_MKOUT_4,
101         GPIO4_2_KP_MKOUT_5,
102         GPIO5_2_KP_MKOUT_6,
103         GPIO6_2_KP_MKOUT_7,
104
105         /* MMC1 */
106         GPIO3_MMC1_DAT0,
107         GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
108         GPIO5_MMC1_DAT2,
109         GPIO6_MMC1_DAT3,
110         GPIO7_MMC1_CLK,
111         GPIO8_MMC1_CMD, /* CMD0 for slot 0 */
112         GPIO15_GPIO,    /* CMD1 default as GPIO for slot 0 */
113
114         /* MMC2 */
115         GPIO9_MMC2_DAT0,
116         GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
117         GPIO11_MMC2_DAT2,
118         GPIO12_MMC2_DAT3,
119         GPIO13_MMC2_CLK,
120         GPIO14_MMC2_CMD,
121
122         /* USB Host */
123         GPIO0_2_USBH_PEN,
124         GPIO1_2_USBH_PWR,
125
126         /* Standard I2C */
127         GPIO21_I2C_SCL,
128         GPIO22_I2C_SDA,
129 };
130
131 static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
132         /* FFUART */
133         GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
134         GPIO31_UART1_TXD,
135         GPIO32_UART1_CTS,
136         GPIO37_UART1_RTS,
137         GPIO33_UART1_DCD,
138         GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
139         GPIO35_UART1_RI,
140         GPIO36_UART1_DTR,
141
142         /* Ethernet */
143         GPIO2_nCS3,
144         GPIO99_GPIO,
145 };
146
147 static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
148         /* FFUART */
149         GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL,
150         GPIO100_UART1_TXD,
151         GPIO101_UART1_CTS,
152         GPIO106_UART1_RTS,
153
154         /* Ethernet */
155         GPIO2_nCS3,
156         GPIO102_GPIO,
157
158         /* MMC3 */
159         GPIO7_2_MMC3_DAT0,
160         GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH,
161         GPIO9_2_MMC3_DAT2,
162         GPIO10_2_MMC3_DAT3,
163         GPIO103_MMC3_CLK,
164         GPIO105_MMC3_CMD,
165 };
166
167 #define NUM_LCD_DETECT_PINS     7
168
169 static int lcd_detect_pins[] __initdata = {
170         MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */
171         MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
172         MFP_PIN_GPIO75, /* LCD_BIAS   - LCDID[4] */
173         MFP_PIN_GPIO73, /* LCD_LCLK   - LCDID[3] */
174         MFP_PIN_GPIO72, /* LCD_FCLK   - LCDID[2] */
175         MFP_PIN_GPIO127,/* LCD_CS_N   - LCDID[1] */
176         MFP_PIN_GPIO76, /* LCD_VSYNC  - LCDID[0] */
177 };
178
179 static void __init zylonite_detect_lcd_panel(void)
180 {
181         unsigned long mfpr_save[NUM_LCD_DETECT_PINS];
182         int i, gpio, id = 0;
183
184         /* save the original MFP settings of these pins and configure
185          * them as GPIO Input, DS01X, Pull Neither, Edge Clear
186          */
187         for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
188                 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
189                 pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
190         }
191
192         for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
193                 id = id << 1;
194                 gpio = mfp_to_gpio(lcd_detect_pins[i]);
195                 gpio_direction_input(gpio);
196
197                 if (gpio_get_value(gpio))
198                         id = id | 0x1;
199         }
200
201         /* lcd id, flush out bit 1 */
202         lcd_id = id & 0x3d;
203
204         /* lcd orientation, portrait or landscape */
205         lcd_orientation = (id >> 6) & 0x1;
206
207         /* restore the original MFP settings */
208         for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
209                 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
210 }
211
212 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
213 static struct pca953x_platform_data gpio_exp[] = {
214         [0] = {
215                 .gpio_base      = 128,
216         },
217         [1] = {
218                 .gpio_base      = 144,
219         },
220 };
221
222 static struct i2c_board_info zylonite_i2c_board_info[] = {
223         {
224                 .type           = "pca9539",
225                 .addr           = 0x74,
226                 .platform_data  = &gpio_exp[0],
227                 .irq            = IRQ_GPIO(18),
228         }, {
229                 .type           = "pca9539",
230                 .addr           = 0x75,
231                 .platform_data  = &gpio_exp[1],
232                 .irq            = IRQ_GPIO(19),
233         },
234 };
235
236 static void __init zylonite_init_i2c(void)
237 {
238         pxa_set_i2c_info(NULL);
239         i2c_register_board_info(0, ARRAY_AND_SIZE(zylonite_i2c_board_info));
240 }
241 #else
242 static inline void zylonite_init_i2c(void) {}
243 #endif
244
245 void __init zylonite_pxa300_init(void)
246 {
247         if (cpu_is_pxa300() || cpu_is_pxa310()) {
248                 /* initialize MFP */
249                 pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));
250
251                 /* detect LCD panel */
252                 zylonite_detect_lcd_panel();
253
254                 /* MMC card detect & write protect for controller 0 */
255                 zylonite_mmc_slot[0].gpio_cd  = EXT_GPIO(0);
256                 zylonite_mmc_slot[0].gpio_wp  = EXT_GPIO(2);
257
258                 /* WM9713 IRQ */
259                 wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO26);
260
261                 zylonite_init_i2c();
262         }
263
264         if (cpu_is_pxa300()) {
265                 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
266                 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
267         }
268
269         if (cpu_is_pxa310()) {
270                 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
271                 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
272
273                 /* MMC card detect & write protect for controller 2 */
274                 zylonite_mmc_slot[2].gpio_cd = EXT_GPIO(30);
275                 zylonite_mmc_slot[2].gpio_wp = EXT_GPIO(31);
276         }
277
278         /* GPIOs for Debug LEDs */
279         gpio_debug_led1 = EXT_GPIO(25);
280         gpio_debug_led2 = EXT_GPIO(26);
281 }