Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6
[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
20 #include <asm/gpio.h>
21 #include <asm/arch/mfp-pxa300.h>
22 #include <asm/arch/zylonite.h>
23
24 #define ARRAY_AND_SIZE(x)       (x), ARRAY_SIZE(x)
25
26 /* PXA300/PXA310 common configurations */
27 static mfp_cfg_t common_mfp_cfg[] __initdata = {
28         /* LCD */
29         GPIO54_LCD_LDD_0,
30         GPIO55_LCD_LDD_1,
31         GPIO56_LCD_LDD_2,
32         GPIO57_LCD_LDD_3,
33         GPIO58_LCD_LDD_4,
34         GPIO59_LCD_LDD_5,
35         GPIO60_LCD_LDD_6,
36         GPIO61_LCD_LDD_7,
37         GPIO62_LCD_LDD_8,
38         GPIO63_LCD_LDD_9,
39         GPIO64_LCD_LDD_10,
40         GPIO65_LCD_LDD_11,
41         GPIO66_LCD_LDD_12,
42         GPIO67_LCD_LDD_13,
43         GPIO68_LCD_LDD_14,
44         GPIO69_LCD_LDD_15,
45         GPIO70_LCD_LDD_16,
46         GPIO71_LCD_LDD_17,
47         GPIO72_LCD_FCLK,
48         GPIO73_LCD_LCLK,
49         GPIO74_LCD_PCLK,
50         GPIO75_LCD_BIAS,
51         GPIO76_LCD_VSYNC,
52         GPIO127_LCD_CS_N,
53
54         /* BTUART */
55         GPIO111_UART2_RTS,
56         GPIO112_UART2_RXD,
57         GPIO113_UART2_TXD,
58         GPIO114_UART2_CTS,
59
60         /* STUART */
61         GPIO109_UART3_TXD,
62         GPIO110_UART3_RXD,
63
64         /* AC97 */
65         GPIO23_AC97_nACRESET,
66         GPIO24_AC97_SYSCLK,
67         GPIO29_AC97_BITCLK,
68         GPIO25_AC97_SDATA_IN_0,
69         GPIO27_AC97_SDATA_OUT,
70         GPIO28_AC97_SYNC,
71
72         /* Keypad */
73         GPIO107_KP_DKIN_0,
74         GPIO108_KP_DKIN_1,
75         GPIO115_KP_MKIN_0,
76         GPIO116_KP_MKIN_1,
77         GPIO117_KP_MKIN_2,
78         GPIO118_KP_MKIN_3,
79         GPIO119_KP_MKIN_4,
80         GPIO120_KP_MKIN_5,
81         GPIO2_2_KP_MKIN_6,
82         GPIO3_2_KP_MKIN_7,
83         GPIO121_KP_MKOUT_0,
84         GPIO122_KP_MKOUT_1,
85         GPIO123_KP_MKOUT_2,
86         GPIO124_KP_MKOUT_3,
87         GPIO125_KP_MKOUT_4,
88         GPIO4_2_KP_MKOUT_5,
89         GPIO5_2_KP_MKOUT_6,
90         GPIO6_2_KP_MKOUT_7,
91 };
92
93 static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
94         /* FFUART */
95         GPIO30_UART1_RXD,
96         GPIO31_UART1_TXD,
97         GPIO32_UART1_CTS,
98         GPIO37_UART1_RTS,
99         GPIO33_UART1_DCD,
100         GPIO34_UART1_DSR,
101         GPIO35_UART1_RI,
102         GPIO36_UART1_DTR,
103
104         /* Ethernet */
105         GPIO2_nCS3,
106         GPIO99_GPIO,
107 };
108
109 static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
110         /* FFUART */
111         GPIO99_UART1_RXD,
112         GPIO100_UART1_TXD,
113         GPIO101_UART1_CTS,
114         GPIO106_UART1_RTS,
115
116         /* Ethernet */
117         GPIO2_nCS3,
118         GPIO102_GPIO,
119 };
120
121 #define NUM_LCD_DETECT_PINS     7
122
123 static int lcd_detect_pins[] __initdata = {
124         MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */
125         MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
126         MFP_PIN_GPIO75, /* LCD_BIAS   - LCDID[4] */
127         MFP_PIN_GPIO73, /* LCD_LCLK   - LCDID[3] */
128         MFP_PIN_GPIO72, /* LCD_FCLK   - LCDID[2] */
129         MFP_PIN_GPIO127,/* LCD_CS_N   - LCDID[1] */
130         MFP_PIN_GPIO76, /* LCD_VSYNC  - LCDID[0] */
131 };
132
133 static void __init zylonite_detect_lcd_panel(void)
134 {
135         unsigned long mfpr_save[NUM_LCD_DETECT_PINS];
136         int i, gpio, id = 0;
137
138         /* save the original MFP settings of these pins and configure
139          * them as GPIO Input, DS01X, Pull Neither, Edge Clear
140          */
141         for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
142                 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
143                 pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
144         }
145
146         for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
147                 id = id << 1;
148                 gpio = mfp_to_gpio(lcd_detect_pins[i]);
149                 gpio_direction_input(gpio);
150
151                 if (gpio_get_value(gpio))
152                         id = id | 0x1;
153         }
154
155         /* lcd id, flush out bit 1 */
156         lcd_id = id & 0x3d;
157
158         /* lcd orientation, portrait or landscape */
159         lcd_orientation = (id >> 6) & 0x1;
160
161         /* restore the original MFP settings */
162         for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
163                 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
164 }
165
166 void __init zylonite_pxa300_init(void)
167 {
168         if (cpu_is_pxa300() || cpu_is_pxa310()) {
169                 /* initialize MFP */
170                 pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));
171
172                 /* detect LCD panel */
173                 zylonite_detect_lcd_panel();
174
175                 /* GPIO pin assignment */
176                 gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO20);
177         }
178
179         if (cpu_is_pxa300()) {
180                 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
181                 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
182         }
183
184         if (cpu_is_pxa310()) {
185                 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
186                 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
187         }
188 }