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1 /*
2  *  arch/arm/mach-pxa/colibri-pxa3xx.c
3  *
4  *  Common functions for all Toradex PXA3xx modules
5  *
6  *  Daniel Mack <daniel@caiaq.de>
7  *
8  *  This program is free software; you can redistribute it and/or modify
9  *  it under the terms of the GNU General Public License version 2 as
10  *  published by the Free Software Foundation.
11  */
12 
13 #include <linux/init.h>
14 #include <linux/kernel.h>
15 #include <linux/platform_device.h>
16 #include <linux/gpio.h>
17 #include <linux/etherdevice.h>
18 #include <asm/mach-types.h>
19 #include <mach/hardware.h>
20 #include <asm/sizes.h>
21 #include <asm/system_info.h>
22 #include <asm/mach/arch.h>
23 #include <asm/mach/irq.h>
24 #include <mach/pxa3xx-regs.h>
25 #include <mach/mfp-pxa300.h>
26 #include <mach/colibri.h>
27 #include <linux/platform_data/mmc-pxamci.h>
28 #include <linux/platform_data/video-pxafb.h>
29 #include <linux/platform_data/mtd-nand-pxa3xx.h>
30 
31 #include "generic.h"
32 #include "devices.h"
33 
34 #if defined(CONFIG_AX88796)
35 #define ETHER_ADDR_LEN 6
36 static u8 ether_mac_addr[ETHER_ADDR_LEN];
37 
colibri_pxa3xx_init_eth(struct ax_plat_data * plat_data)38 void __init colibri_pxa3xx_init_eth(struct ax_plat_data *plat_data)
39 {
40 	int i;
41 	u64 serial = ((u64) system_serial_high << 32) | system_serial_low;
42 
43 	/*
44 	 * If the bootloader passed in a serial boot tag, which contains a
45 	 * valid ethernet MAC, pass it to the interface. Toradex ships the
46 	 * modules with their own bootloader which provides a valid MAC
47 	 * this way.
48 	 */
49 
50 	for (i = 0; i < ETHER_ADDR_LEN; i++) {
51 		ether_mac_addr[i] = serial & 0xff;
52 		serial >>= 8;
53 	}
54 
55 	if (is_valid_ether_addr(ether_mac_addr)) {
56 		plat_data->flags |= AXFLG_MAC_FROMPLATFORM;
57 		plat_data->mac_addr = ether_mac_addr;
58 		printk(KERN_INFO "%s(): taking MAC from serial boot tag\n",
59 			__func__);
60 	} else {
61 		plat_data->flags |= AXFLG_MAC_FROMDEV;
62 		printk(KERN_INFO "%s(): no valid serial boot tag found, "
63 			"taking MAC from device\n", __func__);
64 	}
65 }
66 #endif
67 
68 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
69 static int lcd_bl_pin;
70 
71 /*
72  * LCD panel (Sharp LQ043T3DX02)
73  */
colibri_lcd_backlight(int on)74 static void colibri_lcd_backlight(int on)
75 {
76 	gpio_set_value(lcd_bl_pin, !!on);
77 }
78 
79 static struct pxafb_mode_info sharp_lq43_mode = {
80 	.pixclock	= 101936,
81 	.xres		= 480,
82 	.yres		= 272,
83 	.bpp		= 32,
84 	.depth		= 18,
85 	.hsync_len      = 41,
86 	.left_margin    = 2,
87 	.right_margin   = 2,
88 	.vsync_len      = 10,
89 	.upper_margin   = 2,
90 	.lower_margin   = 2,
91 	.sync	   	= 0,
92 	.cmap_greyscale = 0,
93 };
94 
95 static struct pxafb_mach_info sharp_lq43_info = {
96 	.modes		= &sharp_lq43_mode,
97 	.num_modes	= 1,
98 	.cmap_inverse	= 0,
99 	.cmap_static	= 0,
100 	.lcd_conn	= LCD_COLOR_TFT_18BPP,
101 	.pxafb_backlight_power = colibri_lcd_backlight,
102 };
103 
colibri_pxa3xx_init_lcd(int bl_pin)104 void __init colibri_pxa3xx_init_lcd(int bl_pin)
105 {
106 	lcd_bl_pin = bl_pin;
107 	gpio_request(bl_pin, "lcd backlight");
108 	gpio_direction_output(bl_pin, 0);
109 	pxa_set_fb_info(NULL, &sharp_lq43_info);
110 }
111 #endif
112 
113 #if defined(CONFIG_MTD_NAND_PXA3xx) || defined(CONFIG_MTD_NAND_PXA3xx_MODULE)
114 static struct mtd_partition colibri_nand_partitions[] = {
115 	{
116 		.name        = "bootloader",
117 		.offset      = 0,
118 		.size        = SZ_512K,
119 		.mask_flags  = MTD_WRITEABLE, /* force read-only */
120 	},
121 	{
122 		.name        = "kernel",
123 		.offset      = MTDPART_OFS_APPEND,
124 		.size        = SZ_4M,
125 		.mask_flags  = MTD_WRITEABLE, /* force read-only */
126 	},
127 	{
128 		.name        = "reserved",
129 		.offset      = MTDPART_OFS_APPEND,
130 		.size        = SZ_1M,
131 		.mask_flags  = MTD_WRITEABLE, /* force read-only */
132 	},
133 	{
134 		.name        = "fs",
135 		.offset      = MTDPART_OFS_APPEND,
136 		.size        = MTDPART_SIZ_FULL,
137 	},
138 };
139 
140 static struct pxa3xx_nand_platform_data colibri_nand_info = {
141 	.enable_arbiter	= 1,
142 	.keep_config	= 1,
143 	.num_cs		= 1,
144 	.parts[0]	= colibri_nand_partitions,
145 	.nr_parts[0]	= ARRAY_SIZE(colibri_nand_partitions),
146 };
147 
colibri_pxa3xx_init_nand(void)148 void __init colibri_pxa3xx_init_nand(void)
149 {
150 	pxa3xx_set_nand_info(&colibri_nand_info);
151 }
152 #endif
153 
154