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gerrit-public.fairphone.software / kernel / msm-4.9 / 2c8086a5d073e8e72122a5b84febde236a39845b / . / arch / arm / mach-pxa / zylonite_pxa320.c
blob: 63cb36be086bfda5ebeb0d17903d7b3704e7b35d [file] [log] [blame]
eric miao2c8086a2007-09-11 19:13:17 -0700[diff] [blame^]1/*
2 * linux/arch/arm/mach-pxa/zylonite_pxa320.c
3 *
4 * PXA320 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.y.miao@gmail.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/arch/gpio.h>
21#include <asm/arch/mfp-pxa320.h>
22#include <asm/arch/zylonite.h>
23
24#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
25
26static mfp_cfg_t mfp_cfg[] __initdata = {
27 /* LCD */
28 GPIO6_2_LCD_LDD_0,
29 GPIO7_2_LCD_LDD_1,
30 GPIO8_2_LCD_LDD_2,
31 GPIO9_2_LCD_LDD_3,
32 GPIO10_2_LCD_LDD_4,
33 GPIO11_2_LCD_LDD_5,
34 GPIO12_2_LCD_LDD_6,
35 GPIO13_2_LCD_LDD_7,
36 GPIO63_LCD_LDD_8,
37 GPIO64_LCD_LDD_9,
38 GPIO65_LCD_LDD_10,
39 GPIO66_LCD_LDD_11,
40 GPIO67_LCD_LDD_12,
41 GPIO68_LCD_LDD_13,
42 GPIO69_LCD_LDD_14,
43 GPIO70_LCD_LDD_15,
44 GPIO71_LCD_LDD_16,
45 GPIO72_LCD_LDD_17,
46 GPIO73_LCD_CS_N,
47 GPIO74_LCD_VSYNC,
48 GPIO14_2_LCD_FCLK,
49 GPIO15_2_LCD_LCLK,
50 GPIO16_2_LCD_PCLK,
51 GPIO17_2_LCD_BIAS,
52
53 /* FFUART */
54 GPIO41_UART1_RXD,
55 GPIO42_UART1_TXD,
56 GPIO43_UART1_CTS,
57 GPIO44_UART1_DCD,
58 GPIO45_UART1_DSR,
59 GPIO46_UART1_RI,
60 GPIO47_UART1_DTR,
61 GPIO48_UART1_RTS,
62
63 /* AC97 */
64 GPIO34_AC97_SYSCLK,
65 GPIO35_AC97_SDATA_IN_0,
66 GPIO37_AC97_SDATA_OUT,
67 GPIO38_AC97_SYNC,
68 GPIO39_AC97_BITCLK,
69 GPIO40_AC97_nACRESET,
70
71 /* I2C */
72 GPIO32_I2C_SCL,
73 GPIO33_I2C_SDA,
74
75 /* Keypad */
76 GPIO105_KP_DKIN_0,
77 GPIO106_KP_DKIN_1,
78 GPIO113_KP_MKIN_0,
79 GPIO114_KP_MKIN_1,
80 GPIO115_KP_MKIN_2,
81 GPIO116_KP_MKIN_3,
82 GPIO117_KP_MKIN_4,
83 GPIO118_KP_MKIN_5,
84 GPIO119_KP_MKIN_6,
85 GPIO120_KP_MKIN_7,
86 GPIO121_KP_MKOUT_0,
87 GPIO122_KP_MKOUT_1,
88 GPIO123_KP_MKOUT_2,
89 GPIO124_KP_MKOUT_3,
90 GPIO125_KP_MKOUT_4,
91 GPIO126_KP_MKOUT_5,
92 GPIO127_KP_MKOUT_6,
93 GPIO5_2_KP_MKOUT_7,
94
95 /* Ethernet */
96 GPIO4_nCS3,
97 GPIO90_GPIO,
98};
99
100#define NUM_LCD_DETECT_PINS 7
101
102static int lcd_detect_pins[] __initdata = {
103 MFP_PIN_GPIO72, /* LCD_LDD_17 - ORIENT */
104 MFP_PIN_GPIO71, /* LCD_LDD_16 - LCDID[5] */
105 MFP_PIN_GPIO17_2, /* LCD_BIAS - LCDID[4] */
106 MFP_PIN_GPIO15_2, /* LCD_LCLK - LCDID[3] */
107 MFP_PIN_GPIO14_2, /* LCD_FCLK - LCDID[2] */
108 MFP_PIN_GPIO73, /* LCD_CS_N - LCDID[1] */
109 MFP_PIN_GPIO74, /* LCD_VSYNC - LCDID[0] */
110 /*
111 * set the MFP_PIN_GPIO 14/15/17 to alternate function other than
112 * GPIO to avoid input level confliction with 14_2, 15_2, 17_2
113 */
114 MFP_PIN_GPIO14,
115 MFP_PIN_GPIO15,
116 MFP_PIN_GPIO17,
117};
118
119static int lcd_detect_mfpr[] __initdata = {
120 /* AF0, DS 1X, Pull Neither, Edge Clear */
121 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440,
122 0xc442, /* Backlight, Pull-Up, AF2 */
123 0x8445, /* AF5 */
124 0x8445, /* AF5 */
125};
126
127static void __init zylonite_detect_lcd_panel(void)
128{
129 unsigned long mfpr_save[ARRAY_SIZE(lcd_detect_pins)];
130 int i, gpio, id = 0;
131
132 /* save the original MFP settings of these pins and configure them
133 * as GPIO Input, DS01X, Pull Neither, Edge Clear
134 */
135 for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++) {
136 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
137 pxa3xx_mfp_write(lcd_detect_pins[i], lcd_detect_mfpr[i]);
138 }
139
140 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
141 id = id << 1;
142 gpio = mfp_to_gpio(lcd_detect_pins[i]);
143 gpio_direction_input(gpio);
144
145 if (gpio_get_value(gpio))
146 id = id | 0x1;
147 }
148
149 /* lcd id, flush out bit 1 */
150 lcd_id = id & 0x3d;
151
152 /* lcd orientation, portrait or landscape */
153 lcd_orientation = (id >> 6) & 0x1;
154
155 /* restore the original MFP settings */
156 for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++)
157 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
158}
159
160void __init zylonite_pxa320_init(void)
161{
162 if (cpu_is_pxa320()) {
163 /* initialize MFP */
164 pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_cfg));
165
166 /* detect LCD panel */
167 zylonite_detect_lcd_panel();
168
169 /* GPIO pin assignment */
170 gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO14);
171 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO9);
172 }
173}