1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * arch/arm/mach-pxa/colibri-pxa3xx.c
4 *
5 * Common functions for all Toradex PXA3xx modules
6 *
7 * Daniel Mack <daniel@caiaq.de>
8 */
9
10 #include <linux/init.h>
11 #include <linux/kernel.h>
12 #include <linux/platform_device.h>
13 #include <linux/gpio.h>
14 #include <linux/etherdevice.h>
15 #include <asm/mach-types.h>
16 #include <mach/hardware.h>
17 #include <linux/sizes.h>
18 #include <asm/system_info.h>
19 #include <asm/mach/arch.h>
20 #include <asm/mach/irq.h>
21 #include <mach/pxa3xx-regs.h>
22 #include "mfp-pxa300.h"
23 #include "colibri.h"
24 #include <linux/platform_data/mmc-pxamci.h>
25 #include <linux/platform_data/video-pxafb.h>
26 #include <linux/platform_data/mtd-nand-pxa3xx.h>
27
28 #include "generic.h"
29 #include "devices.h"
30
31 #if defined(CONFIG_AX88796)
32 #define ETHER_ADDR_LEN 6
33 static u8 ether_mac_addr[ETHER_ADDR_LEN];
34
colibri_pxa3xx_init_eth(struct ax_plat_data * plat_data)35 void __init colibri_pxa3xx_init_eth(struct ax_plat_data *plat_data)
36 {
37 int i;
38 u64 serial = ((u64) system_serial_high << 32) | system_serial_low;
39
40 /*
41 * If the bootloader passed in a serial boot tag, which contains a
42 * valid ethernet MAC, pass it to the interface. Toradex ships the
43 * modules with their own bootloader which provides a valid MAC
44 * this way.
45 */
46
47 for (i = 0; i < ETHER_ADDR_LEN; i++) {
48 ether_mac_addr[i] = serial & 0xff;
49 serial >>= 8;
50 }
51
52 if (is_valid_ether_addr(ether_mac_addr)) {
53 plat_data->flags |= AXFLG_MAC_FROMPLATFORM;
54 plat_data->mac_addr = ether_mac_addr;
55 printk(KERN_INFO "%s(): taking MAC from serial boot tag\n",
56 __func__);
57 } else {
58 plat_data->flags |= AXFLG_MAC_FROMDEV;
59 printk(KERN_INFO "%s(): no valid serial boot tag found, "
60 "taking MAC from device\n", __func__);
61 }
62 }
63 #endif
64
65 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
66 static int lcd_bl_pin;
67
68 /*
69 * LCD panel (Sharp LQ043T3DX02)
70 */
colibri_lcd_backlight(int on)71 static void colibri_lcd_backlight(int on)
72 {
73 gpio_set_value(lcd_bl_pin, !!on);
74 }
75
76 static struct pxafb_mode_info sharp_lq43_mode = {
77 .pixclock = 101936,
78 .xres = 480,
79 .yres = 272,
80 .bpp = 32,
81 .depth = 18,
82 .hsync_len = 41,
83 .left_margin = 2,
84 .right_margin = 2,
85 .vsync_len = 10,
86 .upper_margin = 2,
87 .lower_margin = 2,
88 .sync = 0,
89 .cmap_greyscale = 0,
90 };
91
92 static struct pxafb_mach_info sharp_lq43_info = {
93 .modes = &sharp_lq43_mode,
94 .num_modes = 1,
95 .cmap_inverse = 0,
96 .cmap_static = 0,
97 .lcd_conn = LCD_COLOR_TFT_18BPP,
98 .pxafb_backlight_power = colibri_lcd_backlight,
99 };
100
colibri_pxa3xx_init_lcd(int bl_pin)101 void __init colibri_pxa3xx_init_lcd(int bl_pin)
102 {
103 lcd_bl_pin = bl_pin;
104 gpio_request(bl_pin, "lcd backlight");
105 gpio_direction_output(bl_pin, 0);
106 pxa_set_fb_info(NULL, &sharp_lq43_info);
107 }
108 #endif
109
110 #if IS_ENABLED(CONFIG_MTD_NAND_MARVELL)
111 static struct mtd_partition colibri_nand_partitions[] = {
112 {
113 .name = "bootloader",
114 .offset = 0,
115 .size = SZ_512K,
116 .mask_flags = MTD_WRITEABLE, /* force read-only */
117 },
118 {
119 .name = "kernel",
120 .offset = MTDPART_OFS_APPEND,
121 .size = SZ_4M,
122 .mask_flags = MTD_WRITEABLE, /* force read-only */
123 },
124 {
125 .name = "reserved",
126 .offset = MTDPART_OFS_APPEND,
127 .size = SZ_1M,
128 .mask_flags = MTD_WRITEABLE, /* force read-only */
129 },
130 {
131 .name = "fs",
132 .offset = MTDPART_OFS_APPEND,
133 .size = MTDPART_SIZ_FULL,
134 },
135 };
136
137 static struct pxa3xx_nand_platform_data colibri_nand_info = {
138 .keep_config = 1,
139 .parts = colibri_nand_partitions,
140 .nr_parts = ARRAY_SIZE(colibri_nand_partitions),
141 };
142
colibri_pxa3xx_init_nand(void)143 void __init colibri_pxa3xx_init_nand(void)
144 {
145 pxa3xx_set_nand_info(&colibri_nand_info);
146 }
147 #endif
148
149