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d395e6ad KS |
1 | /* |
2 | * mach-davinci/devices.c | |
3 | * | |
4 | * DaVinci platform device setup/initialization | |
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 as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/module.h> | |
13 | #include <linux/kernel.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/platform_device.h> | |
16 | #include <linux/dma-mapping.h> | |
17 | #include <linux/io.h> | |
18 | ||
19 | #include <asm/mach/map.h> | |
20 | ||
21 | #include <mach/hardware.h> | |
22 | #include <mach/i2c.h> | |
80b02c17 | 23 | #include <mach/irqs.h> |
5526b3f7 KH |
24 | #include <mach/cputype.h> |
25 | #include <mach/mux.h> | |
2dbf56ae KH |
26 | #include <mach/edma.h> |
27 | #include <mach/mmc.h> | |
d395e6ad | 28 | |
f5c122da | 29 | #define DAVINCI_I2C_BASE 0x01C21000 |
2dbf56ae KH |
30 | #define DAVINCI_MMCSD0_BASE 0x01E10000 |
31 | #define DM355_MMCSD0_BASE 0x01E11000 | |
32 | #define DM355_MMCSD1_BASE 0x01E00000 | |
f5c122da | 33 | |
d395e6ad KS |
34 | static struct resource i2c_resources[] = { |
35 | { | |
36 | .start = DAVINCI_I2C_BASE, | |
37 | .end = DAVINCI_I2C_BASE + 0x40, | |
38 | .flags = IORESOURCE_MEM, | |
39 | }, | |
40 | { | |
41 | .start = IRQ_I2C, | |
42 | .flags = IORESOURCE_IRQ, | |
43 | }, | |
44 | }; | |
45 | ||
46 | static struct platform_device davinci_i2c_device = { | |
47 | .name = "i2c_davinci", | |
48 | .id = 1, | |
49 | .num_resources = ARRAY_SIZE(i2c_resources), | |
50 | .resource = i2c_resources, | |
51 | }; | |
52 | ||
53 | void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata) | |
54 | { | |
5526b3f7 KH |
55 | if (cpu_is_davinci_dm644x()) |
56 | davinci_cfg_reg(DM644X_I2C); | |
57 | ||
d395e6ad KS |
58 | davinci_i2c_device.dev.platform_data = pdata; |
59 | (void) platform_device_register(&davinci_i2c_device); | |
60 | } | |
61 | ||
2dbf56ae KH |
62 | #if defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE) |
63 | ||
64 | static u64 mmcsd0_dma_mask = DMA_32BIT_MASK; | |
65 | ||
66 | static struct resource mmcsd0_resources[] = { | |
67 | { | |
68 | /* different on dm355 */ | |
69 | .start = DAVINCI_MMCSD0_BASE, | |
70 | .end = DAVINCI_MMCSD0_BASE + SZ_4K - 1, | |
71 | .flags = IORESOURCE_MEM, | |
72 | }, | |
73 | /* IRQs: MMC/SD, then SDIO */ | |
74 | { | |
75 | .start = IRQ_MMCINT, | |
76 | .flags = IORESOURCE_IRQ, | |
77 | }, { | |
78 | /* different on dm355 */ | |
79 | .start = IRQ_SDIOINT, | |
80 | .flags = IORESOURCE_IRQ, | |
81 | }, | |
82 | /* DMA channels: RX, then TX */ | |
83 | { | |
84 | .start = DAVINCI_DMA_MMCRXEVT, | |
85 | .flags = IORESOURCE_DMA, | |
86 | }, { | |
87 | .start = DAVINCI_DMA_MMCTXEVT, | |
88 | .flags = IORESOURCE_DMA, | |
89 | }, | |
90 | }; | |
91 | ||
92 | static struct platform_device davinci_mmcsd0_device = { | |
93 | .name = "davinci_mmc", | |
94 | .id = 0, | |
95 | .dev = { | |
96 | .dma_mask = &mmcsd0_dma_mask, | |
97 | .coherent_dma_mask = DMA_32BIT_MASK, | |
98 | }, | |
99 | .num_resources = ARRAY_SIZE(mmcsd0_resources), | |
100 | .resource = mmcsd0_resources, | |
101 | }; | |
102 | ||
103 | static u64 mmcsd1_dma_mask = DMA_32BIT_MASK; | |
104 | ||
105 | static struct resource mmcsd1_resources[] = { | |
106 | { | |
107 | .start = DM355_MMCSD1_BASE, | |
108 | .end = DM355_MMCSD1_BASE + SZ_4K - 1, | |
109 | .flags = IORESOURCE_MEM, | |
110 | }, | |
111 | /* IRQs: MMC/SD, then SDIO */ | |
112 | { | |
113 | .start = IRQ_DM355_MMCINT1, | |
114 | .flags = IORESOURCE_IRQ, | |
115 | }, { | |
116 | .start = IRQ_DM355_SDIOINT1, | |
117 | .flags = IORESOURCE_IRQ, | |
118 | }, | |
119 | /* DMA channels: RX, then TX */ | |
120 | { | |
121 | .start = 30, /* rx */ | |
122 | .flags = IORESOURCE_DMA, | |
123 | }, { | |
124 | .start = 31, /* tx */ | |
125 | .flags = IORESOURCE_DMA, | |
126 | }, | |
127 | }; | |
128 | ||
129 | static struct platform_device davinci_mmcsd1_device = { | |
130 | .name = "davinci_mmc", | |
131 | .id = 1, | |
132 | .dev = { | |
133 | .dma_mask = &mmcsd1_dma_mask, | |
134 | .coherent_dma_mask = DMA_32BIT_MASK, | |
135 | }, | |
136 | .num_resources = ARRAY_SIZE(mmcsd1_resources), | |
137 | .resource = mmcsd1_resources, | |
138 | }; | |
139 | ||
140 | ||
141 | void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config) | |
142 | { | |
143 | struct platform_device *pdev = NULL; | |
144 | ||
145 | if (WARN_ON(cpu_is_davinci_dm646x())) | |
146 | return; | |
147 | ||
148 | /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too; | |
149 | * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused. | |
150 | * | |
151 | * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are | |
152 | * not handled right here ... | |
153 | */ | |
154 | switch (module) { | |
155 | case 1: | |
156 | if (!cpu_is_davinci_dm355()) | |
157 | break; | |
158 | ||
159 | /* REVISIT we may not need all these pins if e.g. this | |
160 | * is a hard-wired SDIO device... | |
161 | */ | |
162 | davinci_cfg_reg(DM355_SD1_CMD); | |
163 | davinci_cfg_reg(DM355_SD1_CLK); | |
164 | davinci_cfg_reg(DM355_SD1_DATA0); | |
165 | davinci_cfg_reg(DM355_SD1_DATA1); | |
166 | davinci_cfg_reg(DM355_SD1_DATA2); | |
167 | davinci_cfg_reg(DM355_SD1_DATA3); | |
168 | ||
169 | pdev = &davinci_mmcsd1_device; | |
170 | break; | |
171 | case 0: | |
172 | if (cpu_is_davinci_dm355()) { | |
173 | mmcsd0_resources[0].start = DM355_MMCSD0_BASE; | |
174 | mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1; | |
175 | mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0; | |
176 | ||
177 | /* expose all 6 MMC0 signals: CLK, CMD, DATA[0..3] */ | |
178 | davinci_cfg_reg(DM355_MMCSD0); | |
179 | ||
180 | /* enable RX EDMA */ | |
181 | davinci_cfg_reg(DM355_EVT26_MMC0_RX); | |
182 | } | |
183 | ||
184 | else if (cpu_is_davinci_dm644x()) { | |
185 | /* REVISIT: should this be in board-init code? */ | |
186 | void __iomem *base = | |
187 | IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE); | |
188 | ||
189 | /* Power-on 3.3V IO cells */ | |
190 | __raw_writel(0, base + DM64XX_VDD3P3V_PWDN); | |
191 | /*Set up the pull regiter for MMC */ | |
192 | davinci_cfg_reg(DM644X_MSTK); | |
193 | } | |
194 | ||
195 | pdev = &davinci_mmcsd0_device; | |
196 | break; | |
197 | } | |
198 | ||
199 | if (WARN_ON(!pdev)) | |
200 | return; | |
201 | ||
202 | pdev->dev.platform_data = config; | |
203 | platform_device_register(pdev); | |
204 | } | |
205 | ||
206 | #else | |
207 | ||
208 | void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config) | |
209 | { | |
210 | } | |
211 | ||
212 | #endif | |
213 | ||
fb631387 KH |
214 | /*-------------------------------------------------------------------------*/ |
215 | ||
216 | static struct resource wdt_resources[] = { | |
217 | { | |
218 | .start = 0x01c21c00, | |
219 | .end = 0x01c21fff, | |
220 | .flags = IORESOURCE_MEM, | |
221 | }, | |
222 | }; | |
223 | ||
224 | struct platform_device davinci_wdt_device = { | |
225 | .name = "watchdog", | |
226 | .id = -1, | |
227 | .num_resources = ARRAY_SIZE(wdt_resources), | |
228 | .resource = wdt_resources, | |
229 | }; | |
230 | ||
231 | static void davinci_init_wdt(void) | |
232 | { | |
233 | platform_device_register(&davinci_wdt_device); | |
234 | } | |
235 | ||
236 | /*-------------------------------------------------------------------------*/ | |
237 | ||
238 | static int __init davinci_init_devices(void) | |
239 | { | |
240 | /* please keep these calls, and their implementations above, | |
241 | * in alphabetical order so they're easier to sort through. | |
242 | */ | |
243 | davinci_init_wdt(); | |
244 | ||
245 | return 0; | |
246 | } | |
247 | arch_initcall(davinci_init_devices); | |
248 |