1 /*
2 * ATSTK1003 daughterboard-specific init code
3 *
4 * Copyright (C) 2007 Atmel Corporation
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 #include <linux/clk.h>
11 #include <linux/err.h>
12 #include <linux/init.h>
13 #include <linux/kernel.h>
14 #include <linux/platform_device.h>
15 #include <linux/string.h>
16 #include <linux/types.h>
17
18 #include <linux/spi/at73c213.h>
19 #include <linux/spi/spi.h>
20 #include <linux/atmel-mci.h>
21
22 #include <video/atmel_lcdc.h>
23
24 #include <asm/setup.h>
25
26 #include <mach/at32ap700x.h>
27 #include <mach/board.h>
28 #include <mach/init.h>
29 #include <mach/portmux.h>
30
31 #include "atstk1000.h"
32
33 /* Oscillator frequencies. These are board specific */
34 unsigned long at32_board_osc_rates[3] = {
35 [0] = 32768, /* 32.768 kHz on RTC osc */
36 [1] = 20000000, /* 20 MHz on osc0 */
37 [2] = 12000000, /* 12 MHz on osc1 */
38 };
39
40 #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
41 static struct at73c213_board_info at73c213_data = {
42 .ssc_id = 0,
43 .shortname = "AVR32 STK1000 external DAC",
44 };
45 #endif
46
47 #ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
48 static struct spi_board_info spi0_board_info[] __initdata = {
49 #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
50 {
51 /* AT73C213 */
52 .modalias = "at73c213",
53 .max_speed_hz = 200000,
54 .chip_select = 0,
55 .mode = SPI_MODE_1,
56 .platform_data = &at73c213_data,
57 },
58 #endif
59 {
60 /* QVGA display */
61 .modalias = "ltv350qv",
62 .max_speed_hz = 16000000,
63 .chip_select = 1,
64 .mode = SPI_MODE_3,
65 },
66 };
67 #endif
68
69 #ifdef CONFIG_BOARD_ATSTK100X_SPI1
70 static struct spi_board_info spi1_board_info[] __initdata = { {
71 /* patch in custom entries here */
72 } };
73 #endif
74
75 #ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
76 static struct mci_platform_data __initdata mci0_data = {
77 .slot[0] = {
78 .bus_width = 4,
79 .detect_pin = -ENODEV,
80 .wp_pin = -ENODEV,
81 },
82 };
83 #endif
84
85 #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
atstk1004_setup_extdac(void)86 static void __init atstk1004_setup_extdac(void)
87 {
88 struct clk *gclk;
89 struct clk *pll;
90
91 gclk = clk_get(NULL, "gclk0");
92 if (IS_ERR(gclk))
93 goto err_gclk;
94 pll = clk_get(NULL, "pll0");
95 if (IS_ERR(pll))
96 goto err_pll;
97
98 if (clk_set_parent(gclk, pll)) {
99 pr_debug("STK1000: failed to set pll0 as parent for DAC clock\n");
100 goto err_set_clk;
101 }
102
103 at32_select_periph(GPIO_PIOA_BASE, (1 << 30), GPIO_PERIPH_A, 0);
104 at73c213_data.dac_clk = gclk;
105
106 err_set_clk:
107 clk_put(pll);
108 err_pll:
109 clk_put(gclk);
110 err_gclk:
111 return;
112 }
113 #else
atstk1004_setup_extdac(void)114 static void __init atstk1004_setup_extdac(void)
115 {
116
117 }
118 #endif /* CONFIG_BOARD_ATSTK1000_EXTDAC */
119
setup_board(void)120 void __init setup_board(void)
121 {
122 #ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
123 at32_map_usart(0, 1, 0); /* USART 0/B: /dev/ttyS1, IRDA */
124 #else
125 at32_map_usart(1, 0, 0); /* USART 1/A: /dev/ttyS0, DB9 */
126 #endif
127 /* USART 2/unused: expansion connector */
128 at32_map_usart(3, 2, 0); /* USART 3/C: /dev/ttyS2, DB9 */
129
130 at32_setup_serial_console(0);
131 }
132
atstk1004_init(void)133 static int __init atstk1004_init(void)
134 {
135 #ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
136 at32_add_device_usart(1);
137 #else
138 at32_add_device_usart(0);
139 #endif
140 at32_add_device_usart(2);
141
142 #ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
143 at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
144 #endif
145 #ifdef CONFIG_BOARD_ATSTK100X_SPI1
146 at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
147 #endif
148 #ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
149 at32_add_device_mci(0, &mci0_data);
150 #endif
151 at32_add_device_lcdc(0, &atstk1000_lcdc_data,
152 fbmem_start, fbmem_size,
153 ATMEL_LCDC_PRI_24BIT | ATMEL_LCDC_PRI_CONTROL);
154 at32_add_device_usba(0, NULL);
155 #ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
156 at32_add_device_ssc(0, ATMEL_SSC_TX);
157 #endif
158
159 atstk1000_setup_j2_leds();
160 atstk1004_setup_extdac();
161
162 return 0;
163 }
164 postcore_initcall(atstk1004_init);
165