1/*
2 * Board-specific setup code for the MIMC200
3 *
4 * Copyright (C) 2008 Mercury IMC Ltd
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 * published by the Free Software Foundation.
9 */
10
11extern struct atmel_lcdfb_pdata mimc200_lcdc_data;
12
13#include <linux/clk.h>
14#include <linux/etherdevice.h>
15#include <linux/i2c-gpio.h>
16#include <linux/init.h>
17#include <linux/linkage.h>
18#include <linux/platform_device.h>
19#include <linux/types.h>
20#include <linux/leds.h>
21#include <linux/spi/spi.h>
22#include <linux/spi/eeprom.h>
23
24#include <video/atmel_lcdc.h>
25#include <linux/fb.h>
26
27#include <linux/atmel-mci.h>
28#include <linux/io.h>
29#include <asm/setup.h>
30
31#include <mach/at32ap700x.h>
32#include <mach/board.h>
33#include <mach/init.h>
34#include <mach/portmux.h>
35
36/* Oscillator frequencies. These are board-specific */
37unsigned long at32_board_osc_rates[3] = {
38	[0] = 32768,	/* 32.768 kHz on RTC osc */
39	[1] = 10000000,	/* 10 MHz on osc0 */
40	[2] = 12000000,	/* 12 MHz on osc1 */
41};
42
43/* Initialized by bootloader-specific startup code. */
44struct tag *bootloader_tags __initdata;
45
46static struct fb_videomode __initdata pt0434827_modes[] = {
47	{
48		.name		= "480x272 @ 72",
49		.refresh	= 72,
50		.xres		= 480,		.yres		= 272,
51		.pixclock	= KHZ2PICOS(10000),
52
53		.left_margin	= 1,		.right_margin	= 1,
54		.upper_margin	= 12,		.lower_margin	= 1,
55		.hsync_len	= 42,		.vsync_len	= 1,
56
57		.sync		= 0,
58		.vmode		= FB_VMODE_NONINTERLACED,
59	},
60};
61
62static struct fb_monspecs __initdata mimc200_default_monspecs = {
63	.manufacturer		= "PT",
64	.monitor		= "PT0434827-A401",
65	.modedb			= pt0434827_modes,
66	.modedb_len		= ARRAY_SIZE(pt0434827_modes),
67	.hfmin			= 14820,
68	.hfmax			= 22230,
69	.vfmin			= 60,
70	.vfmax			= 85,
71	.dclkmax		= 25200000,
72};
73
74struct atmel_lcdfb_pdata __initdata mimc200_lcdc_data = {
75	.default_bpp		= 16,
76	.default_dmacon		= ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
77	.default_lcdcon2	= (ATMEL_LCDC_DISTYPE_TFT
78				   | ATMEL_LCDC_INVCLK
79				   | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
80				   | ATMEL_LCDC_MEMOR_BIG),
81	.default_monspecs	= &mimc200_default_monspecs,
82	.guard_time		= 2,
83};
84
85struct eth_addr {
86	u8 addr[6];
87};
88static struct eth_addr __initdata hw_addr[2];
89static struct macb_platform_data __initdata eth_data[2];
90
91static struct spi_eeprom eeprom_25lc010 = {
92		.name = "25lc010",
93		.byte_len = 128,
94		.page_size = 16,
95		.flags = EE_ADDR1,
96};
97
98static struct spi_board_info spi0_board_info[] __initdata = {
99	{
100		.modalias	= "rtc-ds1390",
101		.max_speed_hz	= 4000000,
102		.chip_select	= 2,
103	},
104	{
105		.modalias	= "at25",
106		.max_speed_hz	= 1000000,
107		.chip_select	= 1,
108		.mode		= SPI_MODE_3,
109		.platform_data	= &eeprom_25lc010,
110	},
111};
112
113static struct mci_platform_data __initdata mci0_data = {
114	.slot[0] = {
115		.bus_width	= 4,
116		.detect_pin	= GPIO_PIN_PA(26),
117		.wp_pin		= GPIO_PIN_PA(27),
118	},
119};
120
121/*
122 * The next two functions should go away as the boot loader is
123 * supposed to initialize the macb address registers with a valid
124 * ethernet address. But we need to keep it around for a while until
125 * we can be reasonably sure the boot loader does this.
126 *
127 * The phy_id is ignored as the driver will probe for it.
128 */
129static int __init parse_tag_ethernet(struct tag *tag)
130{
131	int i;
132
133	i = tag->u.ethernet.mac_index;
134	if (i < ARRAY_SIZE(hw_addr))
135		memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
136		       sizeof(hw_addr[i].addr));
137
138	return 0;
139}
140__tagtable(ATAG_ETHERNET, parse_tag_ethernet);
141
142static void __init set_hw_addr(struct platform_device *pdev)
143{
144	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
145	const u8 *addr;
146	void __iomem *regs;
147	struct clk *pclk;
148
149	if (!res)
150		return;
151	if (pdev->id >= ARRAY_SIZE(hw_addr))
152		return;
153
154	addr = hw_addr[pdev->id].addr;
155	if (!is_valid_ether_addr(addr))
156		return;
157
158	/*
159	 * Since this is board-specific code, we'll cheat and use the
160	 * physical address directly as we happen to know that it's
161	 * the same as the virtual address.
162	 */
163	regs = (void __iomem __force *)res->start;
164	pclk = clk_get(&pdev->dev, "pclk");
165	if (IS_ERR(pclk))
166		return;
167
168	clk_enable(pclk);
169	__raw_writel((addr[3] << 24) | (addr[2] << 16)
170		     | (addr[1] << 8) | addr[0], regs + 0x98);
171	__raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
172	clk_disable(pclk);
173	clk_put(pclk);
174}
175
176void __init setup_board(void)
177{
178	at32_map_usart(0, 0, 0);	/* USART 0: /dev/ttyS0 (TTL --> Altera) */
179	at32_map_usart(1, 1, 0);	/* USART 1: /dev/ttyS1 (RS232) */
180	at32_map_usart(2, 2, 0);	/* USART 2: /dev/ttyS2 (RS485) */
181	at32_map_usart(3, 3, 0);	/* USART 3: /dev/ttyS3 (RS422 Multidrop) */
182}
183
184static struct i2c_gpio_platform_data i2c_gpio_data = {
185	.sda_pin		= GPIO_PIN_PA(6),
186	.scl_pin		= GPIO_PIN_PA(7),
187	.sda_is_open_drain	= 1,
188	.scl_is_open_drain	= 1,
189	.udelay			= 2,	/* close to 100 kHz */
190};
191
192static struct platform_device i2c_gpio_device = {
193	.name		= "i2c-gpio",
194	.id		= 0,
195	.dev		= {
196	.platform_data	= &i2c_gpio_data,
197	},
198};
199
200static struct i2c_board_info __initdata i2c_info[] = {
201};
202
203static int __init mimc200_init(void)
204{
205	/*
206	 * MIMC200 uses 16-bit SDRAM interface, so we don't need to
207	 * reserve any pins for it.
208	 */
209
210	at32_add_device_usart(0);
211	at32_add_device_usart(1);
212	at32_add_device_usart(2);
213	at32_add_device_usart(3);
214
215	set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
216	set_hw_addr(at32_add_device_eth(1, &eth_data[1]));
217
218	at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
219	at32_add_device_mci(0, &mci0_data);
220	at32_add_device_usba(0, NULL);
221
222	at32_select_periph(GPIO_PIOB_BASE, 1 << 28, 0, AT32_GPIOF_PULLUP);
223	at32_select_gpio(i2c_gpio_data.sda_pin,
224		AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
225	at32_select_gpio(i2c_gpio_data.scl_pin,
226		AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
227	platform_device_register(&i2c_gpio_device);
228	i2c_register_board_info(0, i2c_info, ARRAY_SIZE(i2c_info));
229
230	at32_add_device_lcdc(0, &mimc200_lcdc_data,
231			     fbmem_start, fbmem_size,
232			     ATMEL_LCDC_CONTROL | ATMEL_LCDC_ALT_CONTROL | ATMEL_LCDC_ALT_24B_DATA);
233
234	return 0;
235}
236postcore_initcall(mimc200_init);
237