ef738deb20b5f4ba259cb8c57e7386aa01fb3be8
[linux-2.6.git] / arch / arm / mach-mmp / gplugd.c
1 /*
2  *  linux/arch/arm/mach-mmp/gplugd.c
3  *
4  *  Support for the Marvell PXA168-based GuruPlug Display (gplugD) Platform.
5  *
6  *  This program is free software; you can redistribute it and/or modify
7  *  it under the terms of the GNU General Public License version 2 as
8  *  publishhed by the Free Software Foundation.
9  */
10
11 #include <linux/init.h>
12 #include <linux/gpio.h>
13
14 #include <asm/mach/arch.h>
15 #include <asm/mach-types.h>
16
17 #include <mach/pxa168.h>
18 #include <mach/mfp-pxa168.h>
19 #include <mach/mfp-gplugd.h>
20
21 #include "common.h"
22
23 static unsigned long gplugd_pin_config[] __initdata = {
24         /* UART3 */
25         GPIO8_UART3_SOUT,
26         GPIO9_UART3_SIN,
27         GPI1O_UART3_CTS,
28         GPI11_UART3_RTS,
29
30         /* MMC2 */
31         GPIO28_MMC2_CMD,
32         GPIO29_MMC2_CLK,
33         GPIO30_MMC2_DAT0,
34         GPIO31_MMC2_DAT1,
35         GPIO32_MMC2_DAT2,
36         GPIO33_MMC2_DAT3,
37
38         /* LCD & HDMI clock selection GPIO: 0: 74.176MHz, 1: 74.25 MHz */
39         GPIO35_GPIO,
40         GPIO36_GPIO, /* CEC Interrupt */
41
42         /* MMC1 */
43         GPIO43_MMC1_CLK,
44         GPIO49_MMC1_CMD,
45         GPIO41_MMC1_DAT0,
46         GPIO40_MMC1_DAT1,
47         GPIO52_MMC1_DAT2,
48         GPIO51_MMC1_DAT3,
49         GPIO53_MMC1_CD,
50
51         /* LCD */
52         GPIO56_LCD_FCLK_RD,
53         GPIO57_LCD_LCLK_A0,
54         GPIO58_LCD_PCLK_WR,
55         GPIO59_LCD_DENA_BIAS,
56         GPIO60_LCD_DD0,
57         GPIO61_LCD_DD1,
58         GPIO62_LCD_DD2,
59         GPIO63_LCD_DD3,
60         GPIO64_LCD_DD4,
61         GPIO65_LCD_DD5,
62         GPIO66_LCD_DD6,
63         GPIO67_LCD_DD7,
64         GPIO68_LCD_DD8,
65         GPIO69_LCD_DD9,
66         GPIO70_LCD_DD10,
67         GPIO71_LCD_DD11,
68         GPIO72_LCD_DD12,
69         GPIO73_LCD_DD13,
70         GPIO74_LCD_DD14,
71         GPIO75_LCD_DD15,
72         GPIO76_LCD_DD16,
73         GPIO77_LCD_DD17,
74         GPIO78_LCD_DD18,
75         GPIO79_LCD_DD19,
76         GPIO80_LCD_DD20,
77         GPIO81_LCD_DD21,
78         GPIO82_LCD_DD22,
79         GPIO83_LCD_DD23,
80
81         /* GPIO */
82         GPIO84_GPIO,
83         GPIO85_GPIO,
84
85         /* Fast-Ethernet*/
86         GPIO86_TX_CLK,
87         GPIO87_TX_EN,
88         GPIO88_TX_DQ3,
89         GPIO89_TX_DQ2,
90         GPIO90_TX_DQ1,
91         GPIO91_TX_DQ0,
92         GPIO92_MII_CRS,
93         GPIO93_MII_COL,
94         GPIO94_RX_CLK,
95         GPIO95_RX_ER,
96         GPIO96_RX_DQ3,
97         GPIO97_RX_DQ2,
98         GPIO98_RX_DQ1,
99         GPIO99_RX_DQ0,
100         GPIO100_MII_MDC,
101         GPIO101_MII_MDIO,
102         GPIO103_RX_DV,
103         GPIO104_GPIO,     /* Reset PHY */
104
105         /* RTC interrupt */
106         GPIO102_GPIO,
107
108         /* I2C */
109         GPIO105_CI2C_SDA,
110         GPIO106_CI2C_SCL,
111
112         /* Select JTAG */
113         GPIO109_GPIO,
114
115         /* I2S */
116         GPIO114_I2S_FRM,
117         GPIO115_I2S_BCLK,
118         GPIO116_I2S_TXD
119 };
120
121 static struct i2c_board_info gplugd_i2c_board_info[] = {
122         {
123                 .type = "isl1208",
124                 .addr = 0x6F,
125         }
126 };
127
128 /* Bring PHY out of reset by setting GPIO 104 */
129 static int gplugd_eth_init(void)
130 {
131         if (unlikely(gpio_request(104, "ETH_RESET_N"))) {
132                 printk(KERN_ERR "Can't get hold of GPIO 104 to bring Ethernet "
133                                 "PHY out of reset\n");
134                 return -EIO;
135         }
136
137         gpio_direction_output(104, 1);
138         gpio_free(104);
139         return 0;
140 }
141
142 struct pxa168_eth_platform_data gplugd_eth_platform_data = {
143         .port_number = 0,
144         .phy_addr    = 0,
145         .speed       = 0, /* Autonagotiation */
146         .init        = gplugd_eth_init,
147 };
148
149 static void __init select_disp_freq(void)
150 {
151         /* set GPIO 35 & clear GPIO 85 to set LCD External Clock to 74.25 MHz */
152         if (unlikely(gpio_request(35, "DISP_FREQ_SEL"))) {
153                 printk(KERN_ERR "Can't get hold of GPIO 35 to select display "
154                                 "frequency\n");
155         } else {
156                 gpio_direction_output(35, 1);
157                 gpio_free(104);
158         }
159
160         if (unlikely(gpio_request(85, "DISP_FREQ_SEL_2"))) {
161                 printk(KERN_ERR "Can't get hold of GPIO 85 to select display "
162                                 "frequency\n");
163         } else {
164                 gpio_direction_output(85, 0);
165                 gpio_free(104);
166         }
167 }
168
169 static void __init gplugd_init(void)
170 {
171         mfp_config(ARRAY_AND_SIZE(gplugd_pin_config));
172
173         select_disp_freq();
174
175         /* on-chip devices */
176         pxa168_add_uart(3);
177         pxa168_add_ssp(0);
178         pxa168_add_twsi(0, NULL, ARRAY_AND_SIZE(gplugd_i2c_board_info));
179
180         pxa168_add_eth(&gplugd_eth_platform_data);
181 }
182
183 MACHINE_START(SHEEVAD, "PXA168-based GuruPlug Display (gplugD) Platform")
184         .map_io         = mmp_map_io,
185         .nr_irqs        = IRQ_BOARD_START,
186         .init_irq       = pxa168_init_irq,
187         .timer          = &pxa168_timer,
188         .init_machine   = gplugd_init,
189 MACHINE_END