1 /*
2 * linux/arch/arm/mach-omap2/board-omap3logic.c
3 *
4 * Copyright (C) 2010 Li-Pro.Net
5 * Stephan Linz <linz@li-pro.net>
6 *
7 * Copyright (C) 2010 Logic Product Development, Inc.
8 * Peter Barada <peter.barada@logicpd.com>
9 *
10 * Modified from Beagle, EVM, and RX51
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 */
16
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19 #include <linux/platform_device.h>
20 #include <linux/delay.h>
21 #include <linux/err.h>
22 #include <linux/clk.h>
23 #include <linux/io.h>
24 #include <linux/gpio.h>
25
26 #include <linux/regulator/machine.h>
27
28 #include <linux/i2c/twl.h>
29 #include <linux/mmc/host.h>
30
31 #include <mach/hardware.h>
32 #include <asm/mach-types.h>
33 #include <asm/mach/arch.h>
34 #include <asm/mach/map.h>
35
36 #include "mux.h"
37 #include "hsmmc.h"
38 #include "control.h"
39 #include "common-board-devices.h"
40
41 #include <plat/mux.h>
42 #include <plat/board.h>
43 #include "common.h"
44 #include <plat/gpmc-smsc911x.h>
45 #include <plat/gpmc.h>
46 #include <plat/sdrc.h>
47
48 #define OMAP3LOGIC_SMSC911X_CS 1
49
50 #define OMAP3530_LV_SOM_MMC_GPIO_CD 110
51 #define OMAP3530_LV_SOM_MMC_GPIO_WP 126
52 #define OMAP3530_LV_SOM_SMSC911X_GPIO_IRQ 152
53
54 #define OMAP3_TORPEDO_MMC_GPIO_CD 127
55 #define OMAP3_TORPEDO_SMSC911X_GPIO_IRQ 129
56
57 static struct regulator_consumer_supply omap3logic_vmmc1_supply[] = {
58 REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
59 };
60
61 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
62 static struct regulator_init_data omap3logic_vmmc1 = {
63 .constraints = {
64 .name = "VMMC1",
65 .min_uV = 1850000,
66 .max_uV = 3150000,
67 .valid_modes_mask = REGULATOR_MODE_NORMAL
68 | REGULATOR_MODE_STANDBY,
69 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
70 | REGULATOR_CHANGE_MODE
71 | REGULATOR_CHANGE_STATUS,
72 },
73 .num_consumer_supplies = ARRAY_SIZE(omap3logic_vmmc1_supply),
74 .consumer_supplies = omap3logic_vmmc1_supply,
75 };
76
77 static struct twl4030_gpio_platform_data omap3logic_gpio_data = {
78 .gpio_base = OMAP_MAX_GPIO_LINES,
79 .irq_base = TWL4030_GPIO_IRQ_BASE,
80 .irq_end = TWL4030_GPIO_IRQ_END,
81 .use_leds = true,
82 .pullups = BIT(1),
83 .pulldowns = BIT(2) | BIT(6) | BIT(7) | BIT(8)
84 | BIT(13) | BIT(15) | BIT(16) | BIT(17),
85 };
86
87 static struct twl4030_platform_data omap3logic_twldata = {
88 .irq_base = TWL4030_IRQ_BASE,
89 .irq_end = TWL4030_IRQ_END,
90
91 /* platform_data for children goes here */
92 .gpio = &omap3logic_gpio_data,
93 .vmmc1 = &omap3logic_vmmc1,
94 };
95
omap3logic_i2c_init(void)96 static int __init omap3logic_i2c_init(void)
97 {
98 omap3_pmic_init("twl4030", &omap3logic_twldata);
99 return 0;
100 }
101
102 static struct omap2_hsmmc_info __initdata board_mmc_info[] = {
103 {
104 .name = "external",
105 .mmc = 1,
106 .caps = MMC_CAP_4_BIT_DATA,
107 .gpio_cd = -EINVAL,
108 .gpio_wp = -EINVAL,
109 },
110 {} /* Terminator */
111 };
112
board_mmc_init(void)113 static void __init board_mmc_init(void)
114 {
115 if (machine_is_omap3530_lv_som()) {
116 /* OMAP3530 LV SOM board */
117 board_mmc_info[0].gpio_cd = OMAP3530_LV_SOM_MMC_GPIO_CD;
118 board_mmc_info[0].gpio_wp = OMAP3530_LV_SOM_MMC_GPIO_WP;
119 omap_mux_init_signal("gpio_110", OMAP_PIN_OUTPUT);
120 omap_mux_init_signal("gpio_126", OMAP_PIN_OUTPUT);
121 } else if (machine_is_omap3_torpedo()) {
122 /* OMAP3 Torpedo board */
123 board_mmc_info[0].gpio_cd = OMAP3_TORPEDO_MMC_GPIO_CD;
124 omap_mux_init_signal("gpio_127", OMAP_PIN_OUTPUT);
125 } else {
126 /* unsupported board */
127 printk(KERN_ERR "%s(): unknown machine type\n", __func__);
128 return;
129 }
130
131 omap2_hsmmc_init(board_mmc_info);
132 }
133
134 static struct omap_smsc911x_platform_data __initdata board_smsc911x_data = {
135 .cs = OMAP3LOGIC_SMSC911X_CS,
136 .gpio_irq = -EINVAL,
137 .gpio_reset = -EINVAL,
138 };
139
140 /* TODO/FIXME (comment by Peter Barada, LogicPD):
141 * Fix the PBIAS voltage for Torpedo MMC1 pins that
142 * are used for other needs (IRQs, etc). */
omap3torpedo_fix_pbias_voltage(void)143 static void omap3torpedo_fix_pbias_voltage(void)
144 {
145 u16 control_pbias_offset = OMAP343X_CONTROL_PBIAS_LITE;
146 u32 reg;
147
148 if (machine_is_omap3_torpedo())
149 {
150 /* Set the bias for the pin */
151 reg = omap_ctrl_readl(control_pbias_offset);
152
153 reg &= ~OMAP343X_PBIASLITEPWRDNZ1;
154 omap_ctrl_writel(reg, control_pbias_offset);
155
156 /* 100ms delay required for PBIAS configuration */
157 msleep(100);
158
159 reg |= OMAP343X_PBIASLITEVMODE1;
160 reg |= OMAP343X_PBIASLITEPWRDNZ1;
161 omap_ctrl_writel(reg | 0x300, control_pbias_offset);
162 }
163 }
164
board_smsc911x_init(void)165 static inline void __init board_smsc911x_init(void)
166 {
167 if (machine_is_omap3530_lv_som()) {
168 /* OMAP3530 LV SOM board */
169 board_smsc911x_data.gpio_irq =
170 OMAP3530_LV_SOM_SMSC911X_GPIO_IRQ;
171 omap_mux_init_signal("gpio_152", OMAP_PIN_INPUT);
172 } else if (machine_is_omap3_torpedo()) {
173 /* OMAP3 Torpedo board */
174 board_smsc911x_data.gpio_irq = OMAP3_TORPEDO_SMSC911X_GPIO_IRQ;
175 omap_mux_init_signal("gpio_129", OMAP_PIN_INPUT);
176 } else {
177 /* unsupported board */
178 printk(KERN_ERR "%s(): unknown machine type\n", __func__);
179 return;
180 }
181
182 gpmc_smsc911x_init(&board_smsc911x_data);
183 }
184
185 #ifdef CONFIG_OMAP_MUX
186 static struct omap_board_mux board_mux[] __initdata = {
187 { .reg_offset = OMAP_MUX_TERMINATOR },
188 };
189 #endif
190
omap3logic_init(void)191 static void __init omap3logic_init(void)
192 {
193 omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
194 omap3torpedo_fix_pbias_voltage();
195 omap3logic_i2c_init();
196 omap_serial_init();
197 omap_sdrc_init(NULL, NULL);
198 board_mmc_init();
199 board_smsc911x_init();
200
201 /* Ensure SDRC pins are mux'd for self-refresh */
202 omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
203 omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
204 }
205
206 MACHINE_START(OMAP3_TORPEDO, "Logic OMAP3 Torpedo board")
207 .atag_offset = 0x100,
208 .map_io = omap3_map_io,
209 .init_early = omap35xx_init_early,
210 .init_irq = omap3_init_irq,
211 .handle_irq = omap3_intc_handle_irq,
212 .init_machine = omap3logic_init,
213 .timer = &omap3_timer,
214 .restart = omap_prcm_restart,
215 MACHINE_END
216
217 MACHINE_START(OMAP3530_LV_SOM, "OMAP Logic 3530 LV SOM board")
218 .atag_offset = 0x100,
219 .map_io = omap3_map_io,
220 .init_early = omap35xx_init_early,
221 .init_irq = omap3_init_irq,
222 .handle_irq = omap3_intc_handle_irq,
223 .init_machine = omap3logic_init,
224 .timer = &omap3_timer,
225 .restart = omap_prcm_restart,
226 MACHINE_END
227