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 | MFP_LPM_EDGE_FALL,
57 GPIO113_UART2_TXD,
58 GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH,
59
60 /* STUART */
61 GPIO109_UART3_TXD,
62 GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL,
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 | MFP_LPM_EDGE_BOTH,
74 GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
75 GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
76 GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
77 GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
78 GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
79 GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
80 GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
81 GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
82 GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
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 /* MMC1 */
93 GPIO3_MMC1_DAT0,
94 GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
95 GPIO5_MMC1_DAT2,
96 GPIO6_MMC1_DAT3,
97 GPIO7_MMC1_CLK,
98 GPIO8_MMC1_CMD, /* CMD0 for slot 0 */
99 GPIO15_GPIO, /* CMD1 default as GPIO for slot 0 */
100
101 /* MMC2 */
102 GPIO9_MMC2_DAT0,
103 GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
104 GPIO11_MMC2_DAT2,
105 GPIO12_MMC2_DAT3,
106 GPIO13_MMC2_CLK,
107 GPIO14_MMC2_CMD,
108 };
109
110 static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
111 /* FFUART */
112 GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
113 GPIO31_UART1_TXD,
114 GPIO32_UART1_CTS,
115 GPIO37_UART1_RTS,
116 GPIO33_UART1_DCD,
117 GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
118 GPIO35_UART1_RI,
119 GPIO36_UART1_DTR,
120
121 /* Ethernet */
122 GPIO2_nCS3,
123 GPIO99_GPIO,
124 };
125
126 static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
127 /* FFUART */
128 GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL,
129 GPIO100_UART1_TXD,
130 GPIO101_UART1_CTS,
131 GPIO106_UART1_RTS,
132
133 /* Ethernet */
134 GPIO2_nCS3,
135 GPIO102_GPIO,
136
137 /* MMC3 */
138 GPIO7_2_MMC3_DAT0,
139 GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH,
140 GPIO9_2_MMC3_DAT2,
141 GPIO10_2_MMC3_DAT3,
142 GPIO103_MMC3_CLK,
143 GPIO105_MMC3_CMD,
144 };
145
146 #define NUM_LCD_DETECT_PINS 7
147
148 static int lcd_detect_pins[] __initdata = {
149 MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */
150 MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
151 MFP_PIN_GPIO75, /* LCD_BIAS - LCDID[4] */
152 MFP_PIN_GPIO73, /* LCD_LCLK - LCDID[3] */
153 MFP_PIN_GPIO72, /* LCD_FCLK - LCDID[2] */
154 MFP_PIN_GPIO127,/* LCD_CS_N - LCDID[1] */
155 MFP_PIN_GPIO76, /* LCD_VSYNC - LCDID[0] */
156 };
157
158 static void __init zylonite_detect_lcd_panel(void)
159 {
160 unsigned long mfpr_save[NUM_LCD_DETECT_PINS];
161 int i, gpio, id = 0;
162
163 /* save the original MFP settings of these pins and configure
164 * them as GPIO Input, DS01X, Pull Neither, Edge Clear
165 */
166 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
167 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
168 pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
169 }
170
171 for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
172 id = id << 1;
173 gpio = mfp_to_gpio(lcd_detect_pins[i]);
174 gpio_direction_input(gpio);
175
176 if (gpio_get_value(gpio))
177 id = id | 0x1;
178 }
179
180 /* lcd id, flush out bit 1 */
181 lcd_id = id & 0x3d;
182
183 /* lcd orientation, portrait or landscape */
184 lcd_orientation = (id >> 6) & 0x1;
185
186 /* restore the original MFP settings */
187 for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
188 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
189 }
190
191 void __init zylonite_pxa300_init(void)
192 {
193 if (cpu_is_pxa300() || cpu_is_pxa310()) {
194 /* initialize MFP */
195 pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));
196
197 /* detect LCD panel */
198 zylonite_detect_lcd_panel();
199
200 /* GPIO pin assignment */
201 gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO20);
202
203 /* MMC card detect & write protect for controller 0 */
204 zylonite_mmc_slot[0].gpio_cd = EXT_GPIO(0);
205 zylonite_mmc_slot[0].gpio_wp = EXT_GPIO(2);
206 }
207
208 if (cpu_is_pxa300()) {
209 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
210 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
211 }
212
213 if (cpu_is_pxa310()) {
214 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
215 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
216
217 /* MMC card detect & write protect for controller 2 */
218 zylonite_mmc_slot[2].gpio_cd = EXT_GPIO(30);
219 zylonite_mmc_slot[2].gpio_wp = EXT_GPIO(31);
220 }
221 }
222
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