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eric miao2c8086a2007-09-11 19:13:17 -07001/*
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.
eric miaoe9bba8e2007-10-30 08:01:38 +01008 * 2007-08-21: eric miao <eric.miao@marvell.com>
eric miao2c8086a2007-09-11 19:13:17 -07009 * 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 */
27static 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
93static 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
109static 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
123static 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
133static 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
166void __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}