ARM: tegra11: clock: Combine DFLL usage controls
[linux-3.10.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/platform_device.h>
13 #include <linux/gpio.h>
14 #include <linux/gpio-pxa.h>
15
16 #include <asm/mach/arch.h>
17 #include <asm/mach-types.h>
18
19 #include <mach/irqs.h>
20 #include <mach/pxa168.h>
21 #include <mach/mfp-pxa168.h>
22
23 #include "common.h"
24
25 static unsigned long gplugd_pin_config[] __initdata = {
26         /* UART3 */
27         GPIO8_UART3_TXD,
28         GPIO9_UART3_RXD,
29         GPIO1O_UART3_CTS,
30         GPIO11_UART3_RTS,
31
32         /* USB OTG PEN */
33         GPIO18_GPIO,
34
35         /* MMC2 */
36         GPIO28_MMC2_CMD,
37         GPIO29_MMC2_CLK,
38         GPIO30_MMC2_DAT0,
39         GPIO31_MMC2_DAT1,
40         GPIO32_MMC2_DAT2,
41         GPIO33_MMC2_DAT3,
42
43         /* LCD & HDMI clock selection GPIO: 0: 74.176MHz, 1: 74.25 MHz */
44         GPIO35_GPIO,
45         GPIO36_GPIO, /* CEC Interrupt */
46
47         /* MMC1 */
48         GPIO43_MMC1_CLK,
49         GPIO49_MMC1_CMD,
50         GPIO41_MMC1_DAT0,
51         GPIO40_MMC1_DAT1,
52         GPIO52_MMC1_DAT2,
53         GPIO51_MMC1_DAT3,
54         GPIO53_MMC1_CD,
55
56         /* LCD */
57         GPIO56_LCD_FCLK_RD,
58         GPIO57_LCD_LCLK_A0,
59         GPIO58_LCD_PCLK_WR,
60         GPIO59_LCD_DENA_BIAS,
61         GPIO60_LCD_DD0,
62         GPIO61_LCD_DD1,
63         GPIO62_LCD_DD2,
64         GPIO63_LCD_DD3,
65         GPIO64_LCD_DD4,
66         GPIO65_LCD_DD5,
67         GPIO66_LCD_DD6,
68         GPIO67_LCD_DD7,
69         GPIO68_LCD_DD8,
70         GPIO69_LCD_DD9,
71         GPIO70_LCD_DD10,
72         GPIO71_LCD_DD11,
73         GPIO72_LCD_DD12,
74         GPIO73_LCD_DD13,
75         GPIO74_LCD_DD14,
76         GPIO75_LCD_DD15,
77         GPIO76_LCD_DD16,
78         GPIO77_LCD_DD17,
79         GPIO78_LCD_DD18,
80         GPIO79_LCD_DD19,
81         GPIO80_LCD_DD20,
82         GPIO81_LCD_DD21,
83         GPIO82_LCD_DD22,
84         GPIO83_LCD_DD23,
85
86         /* GPIO */
87         GPIO84_GPIO,
88         GPIO85_GPIO,
89
90         /* Fast-Ethernet*/
91         GPIO86_TX_CLK,
92         GPIO87_TX_EN,
93         GPIO88_TX_DQ3,
94         GPIO89_TX_DQ2,
95         GPIO90_TX_DQ1,
96         GPIO91_TX_DQ0,
97         GPIO92_MII_CRS,
98         GPIO93_MII_COL,
99         GPIO94_RX_CLK,
100         GPIO95_RX_ER,
101         GPIO96_RX_DQ3,
102         GPIO97_RX_DQ2,
103         GPIO98_RX_DQ1,
104         GPIO99_RX_DQ0,
105         GPIO100_MII_MDC,
106         GPIO101_MII_MDIO,
107         GPIO103_RX_DV,
108         GPIO104_GPIO,     /* Reset PHY */
109
110         /* RTC interrupt */
111         GPIO102_GPIO,
112
113         /* I2C */
114         GPIO105_CI2C_SDA,
115         GPIO106_CI2C_SCL,
116
117         /* SPI NOR Flash on SSP2 */
118         GPIO107_SSP2_RXD,
119         GPIO108_SSP2_TXD,
120         GPIO110_GPIO,     /* SPI_CSn */
121         GPIO111_SSP2_CLK,
122
123         /* Select JTAG */
124         GPIO109_GPIO,
125
126         /* I2S */
127         GPIO114_I2S_FRM,
128         GPIO115_I2S_BCLK,
129         GPIO116_I2S_TXD
130 };
131
132 static struct pxa_gpio_platform_data pxa168_gpio_pdata = {
133         .irq_base       = MMP_GPIO_TO_IRQ(0),
134 };
135
136 static struct i2c_board_info gplugd_i2c_board_info[] = {
137         {
138                 .type = "isl1208",
139                 .addr = 0x6F,
140         }
141 };
142
143 /* Bring PHY out of reset by setting GPIO 104 */
144 static int gplugd_eth_init(void)
145 {
146         if (unlikely(gpio_request(104, "ETH_RESET_N"))) {
147                 printk(KERN_ERR "Can't get hold of GPIO 104 to bring Ethernet "
148                                 "PHY out of reset\n");
149                 return -EIO;
150         }
151
152         gpio_direction_output(104, 1);
153         gpio_free(104);
154         return 0;
155 }
156
157 struct pxa168_eth_platform_data gplugd_eth_platform_data = {
158         .port_number = 0,
159         .phy_addr    = 0,
160         .speed       = 0, /* Autonagotiation */
161         .init        = gplugd_eth_init,
162 };
163
164 static void __init select_disp_freq(void)
165 {
166         /* set GPIO 35 & clear GPIO 85 to set LCD External Clock to 74.25 MHz */
167         if (unlikely(gpio_request(35, "DISP_FREQ_SEL"))) {
168                 printk(KERN_ERR "Can't get hold of GPIO 35 to select display "
169                                 "frequency\n");
170         } else {
171                 gpio_direction_output(35, 1);
172                 gpio_free(35);
173         }
174
175         if (unlikely(gpio_request(85, "DISP_FREQ_SEL_2"))) {
176                 printk(KERN_ERR "Can't get hold of GPIO 85 to select display "
177                                 "frequency\n");
178         } else {
179                 gpio_direction_output(85, 0);
180                 gpio_free(85);
181         }
182 }
183
184 static void __init gplugd_init(void)
185 {
186         mfp_config(ARRAY_AND_SIZE(gplugd_pin_config));
187
188         select_disp_freq();
189
190         /* on-chip devices */
191         pxa168_add_uart(3);
192         pxa168_add_ssp(1);
193         pxa168_add_twsi(0, NULL, ARRAY_AND_SIZE(gplugd_i2c_board_info));
194         platform_device_add_data(&pxa168_device_gpio, &pxa168_gpio_pdata,
195                                  sizeof(struct pxa_gpio_platform_data));
196         platform_device_register(&pxa168_device_gpio);
197
198         pxa168_add_eth(&gplugd_eth_platform_data);
199 }
200
201 MACHINE_START(GPLUGD, "PXA168-based GuruPlug Display (gplugD) Platform")
202         .map_io         = mmp_map_io,
203         .nr_irqs        = MMP_NR_IRQS,
204         .init_irq       = pxa168_init_irq,
205         .init_time      = pxa168_timer_init,
206         .init_machine   = gplugd_init,
207         .restart        = pxa168_restart,
208 MACHINE_END