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
25static 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
132static struct pxa_gpio_platform_data pxa168_gpio_pdata = {
133	.irq_base	= MMP_GPIO_TO_IRQ(0),
134};
135
136static 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 */
144static 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
157struct pxa168_eth_platform_data gplugd_eth_platform_data = {
158	.port_number = 0,
159	.phy_addr    = 0,
160	.speed       = 0, /* Autonagotiation */
161	.intf        = PHY_INTERFACE_MODE_RMII,
162	.init        = gplugd_eth_init,
163};
164
165static void __init select_disp_freq(void)
166{
167	/* set GPIO 35 & clear GPIO 85 to set LCD External Clock to 74.25 MHz */
168	if (unlikely(gpio_request(35, "DISP_FREQ_SEL"))) {
169		printk(KERN_ERR "Can't get hold of GPIO 35 to select display "
170				"frequency\n");
171	} else {
172		gpio_direction_output(35, 1);
173		gpio_free(35);
174	}
175
176	if (unlikely(gpio_request(85, "DISP_FREQ_SEL_2"))) {
177		printk(KERN_ERR "Can't get hold of GPIO 85 to select display "
178				"frequency\n");
179	} else {
180		gpio_direction_output(85, 0);
181		gpio_free(85);
182	}
183}
184
185static void __init gplugd_init(void)
186{
187	mfp_config(ARRAY_AND_SIZE(gplugd_pin_config));
188
189	select_disp_freq();
190
191	/* on-chip devices */
192	pxa168_add_uart(3);
193	pxa168_add_ssp(1);
194	pxa168_add_twsi(0, NULL, ARRAY_AND_SIZE(gplugd_i2c_board_info));
195	platform_device_add_data(&pxa168_device_gpio, &pxa168_gpio_pdata,
196				 sizeof(struct pxa_gpio_platform_data));
197	platform_device_register(&pxa168_device_gpio);
198
199	pxa168_add_eth(&gplugd_eth_platform_data);
200}
201
202MACHINE_START(GPLUGD, "PXA168-based GuruPlug Display (gplugD) Platform")
203	.map_io		= mmp_map_io,
204	.nr_irqs	= MMP_NR_IRQS,
205	.init_irq       = pxa168_init_irq,
206	.init_time	= pxa168_timer_init,
207	.init_machine   = gplugd_init,
208	.restart	= pxa168_restart,
209MACHINE_END
210