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 <asm/setup.h>
23
24 #include <mach/at32ap700x.h>
25 #include <mach/board.h>
26 #include <mach/init.h>
27 #include <mach/portmux.h>
28
29 #include "atstk1000.h"
30
31 /* Oscillator frequencies. These are board specific */
32 unsigned long at32_board_osc_rates[3] = {
33 [0] = 32768, /* 32.768 kHz on RTC osc */
34 [1] = 20000000, /* 20 MHz on osc0 */
35 [2] = 12000000, /* 12 MHz on osc1 */
36 };
37
38 #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
39 static struct at73c213_board_info at73c213_data = {
40 .ssc_id = 0,
41 .shortname = "AVR32 STK1000 external DAC",
42 };
43 #endif
44
45 #ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
46 static struct spi_board_info spi0_board_info[] __initdata = {
47 #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
48 {
49 /* AT73C213 */
50 .modalias = "at73c213",
51 .max_speed_hz = 200000,
52 .chip_select = 0,
53 .mode = SPI_MODE_1,
54 .platform_data = &at73c213_data,
55 },
56 #endif
57 /*
58 * We can control the LTV350QV LCD panel, but it isn't much
59 * point since we don't have an LCD controller...
60 */
61 };
62 #endif
63
64 #ifdef CONFIG_BOARD_ATSTK100X_SPI1
65 static struct spi_board_info spi1_board_info[] __initdata = { {
66 /* patch in custom entries here */
67 } };
68 #endif
69
70 #ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
71 static struct mci_platform_data __initdata mci0_data = {
72 .slot[0] = {
73 .bus_width = 4,
74 .detect_pin = -ENODEV,
75 .wp_pin = -ENODEV,
76 },
77 };
78 #endif
79
80 #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
atstk1003_setup_extdac(void)81 static void __init atstk1003_setup_extdac(void)
82 {
83 struct clk *gclk;
84 struct clk *pll;
85
86 gclk = clk_get(NULL, "gclk0");
87 if (IS_ERR(gclk))
88 goto err_gclk;
89 pll = clk_get(NULL, "pll0");
90 if (IS_ERR(pll))
91 goto err_pll;
92
93 if (clk_set_parent(gclk, pll)) {
94 pr_debug("STK1000: failed to set pll0 as parent for DAC clock\n");
95 goto err_set_clk;
96 }
97
98 at32_select_periph(GPIO_PIOA_BASE, (1 << 30), GPIO_PERIPH_A, 0);
99 at73c213_data.dac_clk = gclk;
100
101 err_set_clk:
102 clk_put(pll);
103 err_pll:
104 clk_put(gclk);
105 err_gclk:
106 return;
107 }
108 #else
atstk1003_setup_extdac(void)109 static void __init atstk1003_setup_extdac(void)
110 {
111
112 }
113 #endif /* CONFIG_BOARD_ATSTK1000_EXTDAC */
114
setup_board(void)115 void __init setup_board(void)
116 {
117 #ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
118 at32_map_usart(0, 1, 0); /* USART 0/B: /dev/ttyS1, IRDA */
119 #else
120 at32_map_usart(1, 0, 0); /* USART 1/A: /dev/ttyS0, DB9 */
121 #endif
122 /* USART 2/unused: expansion connector */
123 at32_map_usart(3, 2, 0); /* USART 3/C: /dev/ttyS2, DB9 */
124
125 at32_setup_serial_console(0);
126 }
127
atstk1003_init(void)128 static int __init atstk1003_init(void)
129 {
130 /*
131 * ATSTK1000 uses 32-bit SDRAM interface. Reserve the
132 * SDRAM-specific pins so that nobody messes with them.
133 */
134 at32_reserve_pin(GPIO_PIOE_BASE, ATMEL_EBI_PE_DATA_ALL);
135
136 #ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
137 at32_add_device_usart(1);
138 #else
139 at32_add_device_usart(0);
140 #endif
141 at32_add_device_usart(2);
142
143 #ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
144 at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
145 #endif
146 #ifdef CONFIG_BOARD_ATSTK100X_SPI1
147 at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
148 #endif
149 #ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
150 at32_add_device_mci(0, &mci0_data);
151 #endif
152 at32_add_device_usba(0, NULL);
153 #ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
154 at32_add_device_ssc(0, ATMEL_SSC_TX);
155 #endif
156
157 atstk1000_setup_j2_leds();
158 atstk1003_setup_extdac();
159
160 return 0;
161 }
162 postcore_initcall(atstk1003_init);
163