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/init.h>
13 #include <linux/platform_device.h>
14 #include <linux/dma-mapping.h>
15 #include <linux/io.h>
16 #include <linux/reboot.h>
17
18 #include <mach/hardware.h>
19 #include <linux/platform_data/i2c-davinci.h>
20 #include <mach/irqs.h>
21 #include <mach/cputype.h>
22 #include <mach/mux.h>
23 #include <linux/platform_data/mmc-davinci.h>
24 #include <mach/time.h>
25 #include <linux/platform_data/edma.h>
26
27
28 #include "davinci.h"
29 #include "clock.h"
30
31 #define DAVINCI_I2C_BASE 0x01C21000
32 #define DAVINCI_ATA_BASE 0x01C66000
33 #define DAVINCI_MMCSD0_BASE 0x01E10000
34 #define DM355_MMCSD0_BASE 0x01E11000
35 #define DM355_MMCSD1_BASE 0x01E00000
36 #define DM365_MMCSD0_BASE 0x01D11000
37 #define DM365_MMCSD1_BASE 0x01D00000
38
39 #define DAVINCI_DMA_MMCRXEVT 26
40 #define DAVINCI_DMA_MMCTXEVT 27
41
42 void __iomem *davinci_sysmod_base;
43
davinci_map_sysmod(void)44 void davinci_map_sysmod(void)
45 {
46 davinci_sysmod_base = ioremap_nocache(DAVINCI_SYSTEM_MODULE_BASE,
47 0x800);
48 /*
49 * Throw a bug since a lot of board initialization code depends
50 * on system module availability. ioremap() failing this early
51 * need careful looking into anyway.
52 */
53 BUG_ON(!davinci_sysmod_base);
54 }
55
56 static struct resource i2c_resources[] = {
57 {
58 .start = DAVINCI_I2C_BASE,
59 .end = DAVINCI_I2C_BASE + 0x40,
60 .flags = IORESOURCE_MEM,
61 },
62 {
63 .start = IRQ_I2C,
64 .flags = IORESOURCE_IRQ,
65 },
66 };
67
68 static struct platform_device davinci_i2c_device = {
69 .name = "i2c_davinci",
70 .id = 1,
71 .num_resources = ARRAY_SIZE(i2c_resources),
72 .resource = i2c_resources,
73 };
74
davinci_init_i2c(struct davinci_i2c_platform_data * pdata)75 void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
76 {
77 if (cpu_is_davinci_dm644x())
78 davinci_cfg_reg(DM644X_I2C);
79
80 davinci_i2c_device.dev.platform_data = pdata;
81 (void) platform_device_register(&davinci_i2c_device);
82 }
83
84 static struct resource ide_resources[] = {
85 {
86 .start = DAVINCI_ATA_BASE,
87 .end = DAVINCI_ATA_BASE + 0x7ff,
88 .flags = IORESOURCE_MEM,
89 },
90 {
91 .start = IRQ_IDE,
92 .end = IRQ_IDE,
93 .flags = IORESOURCE_IRQ,
94 },
95 };
96
97 static u64 ide_dma_mask = DMA_BIT_MASK(32);
98
99 static struct platform_device ide_device = {
100 .name = "palm_bk3710",
101 .id = -1,
102 .resource = ide_resources,
103 .num_resources = ARRAY_SIZE(ide_resources),
104 .dev = {
105 .dma_mask = &ide_dma_mask,
106 .coherent_dma_mask = DMA_BIT_MASK(32),
107 },
108 };
109
davinci_init_ide(void)110 void __init davinci_init_ide(void)
111 {
112 if (cpu_is_davinci_dm644x()) {
113 davinci_cfg_reg(DM644X_HPIEN_DISABLE);
114 davinci_cfg_reg(DM644X_ATAEN);
115 davinci_cfg_reg(DM644X_HDIREN);
116 } else if (cpu_is_davinci_dm646x()) {
117 /* IRQ_DM646X_IDE is the same as IRQ_IDE */
118 davinci_cfg_reg(DM646X_ATAEN);
119 } else {
120 WARN_ON(1);
121 return;
122 }
123
124 platform_device_register(&ide_device);
125 }
126
127 #if IS_ENABLED(CONFIG_MMC_DAVINCI)
128
129 static u64 mmcsd0_dma_mask = DMA_BIT_MASK(32);
130
131 static struct resource mmcsd0_resources[] = {
132 {
133 /* different on dm355 */
134 .start = DAVINCI_MMCSD0_BASE,
135 .end = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
136 .flags = IORESOURCE_MEM,
137 },
138 /* IRQs: MMC/SD, then SDIO */
139 {
140 .start = IRQ_MMCINT,
141 .flags = IORESOURCE_IRQ,
142 }, {
143 /* different on dm355 */
144 .start = IRQ_SDIOINT,
145 .flags = IORESOURCE_IRQ,
146 },
147 };
148
149 static struct platform_device davinci_mmcsd0_device = {
150 .name = "dm6441-mmc",
151 .id = 0,
152 .dev = {
153 .dma_mask = &mmcsd0_dma_mask,
154 .coherent_dma_mask = DMA_BIT_MASK(32),
155 },
156 .num_resources = ARRAY_SIZE(mmcsd0_resources),
157 .resource = mmcsd0_resources,
158 };
159
160 static u64 mmcsd1_dma_mask = DMA_BIT_MASK(32);
161
162 static struct resource mmcsd1_resources[] = {
163 {
164 .start = DM355_MMCSD1_BASE,
165 .end = DM355_MMCSD1_BASE + SZ_4K - 1,
166 .flags = IORESOURCE_MEM,
167 },
168 /* IRQs: MMC/SD, then SDIO */
169 {
170 .start = IRQ_DM355_MMCINT1,
171 .flags = IORESOURCE_IRQ,
172 }, {
173 .start = IRQ_DM355_SDIOINT1,
174 .flags = IORESOURCE_IRQ,
175 },
176 };
177
178 static struct platform_device davinci_mmcsd1_device = {
179 .name = "dm6441-mmc",
180 .id = 1,
181 .dev = {
182 .dma_mask = &mmcsd1_dma_mask,
183 .coherent_dma_mask = DMA_BIT_MASK(32),
184 },
185 .num_resources = ARRAY_SIZE(mmcsd1_resources),
186 .resource = mmcsd1_resources,
187 };
188
189
davinci_setup_mmc(int module,struct davinci_mmc_config * config)190 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
191 {
192 struct platform_device *pdev = NULL;
193
194 if (WARN_ON(cpu_is_davinci_dm646x()))
195 return;
196
197 /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
198 * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
199 *
200 * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
201 * not handled right here ...
202 */
203 switch (module) {
204 case 1:
205 if (cpu_is_davinci_dm355()) {
206 /* REVISIT we may not need all these pins if e.g. this
207 * is a hard-wired SDIO device...
208 */
209 davinci_cfg_reg(DM355_SD1_CMD);
210 davinci_cfg_reg(DM355_SD1_CLK);
211 davinci_cfg_reg(DM355_SD1_DATA0);
212 davinci_cfg_reg(DM355_SD1_DATA1);
213 davinci_cfg_reg(DM355_SD1_DATA2);
214 davinci_cfg_reg(DM355_SD1_DATA3);
215 } else if (cpu_is_davinci_dm365()) {
216 /* Configure pull down control */
217 unsigned v;
218
219 v = __raw_readl(DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
220 __raw_writel(v & ~0xfc0,
221 DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
222
223 mmcsd1_resources[0].start = DM365_MMCSD1_BASE;
224 mmcsd1_resources[0].end = DM365_MMCSD1_BASE +
225 SZ_4K - 1;
226 mmcsd1_resources[2].start = IRQ_DM365_SDIOINT1;
227 davinci_mmcsd1_device.name = "da830-mmc";
228 } else
229 break;
230
231 pdev = &davinci_mmcsd1_device;
232 break;
233 case 0:
234 if (cpu_is_davinci_dm355()) {
235 mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
236 mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
237 mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0;
238
239 /* expose all 6 MMC0 signals: CLK, CMD, DATA[0..3] */
240 davinci_cfg_reg(DM355_MMCSD0);
241
242 /* enable RX EDMA */
243 davinci_cfg_reg(DM355_EVT26_MMC0_RX);
244 } else if (cpu_is_davinci_dm365()) {
245 mmcsd0_resources[0].start = DM365_MMCSD0_BASE;
246 mmcsd0_resources[0].end = DM365_MMCSD0_BASE +
247 SZ_4K - 1;
248 mmcsd0_resources[2].start = IRQ_DM365_SDIOINT0;
249 davinci_mmcsd0_device.name = "da830-mmc";
250 } else if (cpu_is_davinci_dm644x()) {
251 /* REVISIT: should this be in board-init code? */
252 /* Power-on 3.3V IO cells */
253 __raw_writel(0,
254 DAVINCI_SYSMOD_VIRT(SYSMOD_VDD3P3VPWDN));
255 /*Set up the pull regiter for MMC */
256 davinci_cfg_reg(DM644X_MSTK);
257 }
258
259 pdev = &davinci_mmcsd0_device;
260 break;
261 }
262
263 if (WARN_ON(!pdev))
264 return;
265
266 pdev->dev.platform_data = config;
267 platform_device_register(pdev);
268 }
269
270 #else
271
davinci_setup_mmc(int module,struct davinci_mmc_config * config)272 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
273 {
274 }
275
276 #endif
277
278 /*-------------------------------------------------------------------------*/
279
280 static struct resource wdt_resources[] = {
281 {
282 .start = DAVINCI_WDOG_BASE,
283 .end = DAVINCI_WDOG_BASE + SZ_1K - 1,
284 .flags = IORESOURCE_MEM,
285 },
286 };
287
288 struct platform_device davinci_wdt_device = {
289 .name = "davinci-wdt",
290 .id = -1,
291 .num_resources = ARRAY_SIZE(wdt_resources),
292 .resource = wdt_resources,
293 };
294
davinci_restart(enum reboot_mode mode,const char * cmd)295 void davinci_restart(enum reboot_mode mode, const char *cmd)
296 {
297 davinci_watchdog_reset(&davinci_wdt_device);
298 }
299
davinci_init_wdt(void)300 int davinci_init_wdt(void)
301 {
302 return platform_device_register(&davinci_wdt_device);
303 }
304
305 static struct platform_device davinci_gpio_device = {
306 .name = "davinci_gpio",
307 .id = -1,
308 };
309
davinci_gpio_register(struct resource * res,int size,void * pdata)310 int davinci_gpio_register(struct resource *res, int size, void *pdata)
311 {
312 davinci_gpio_device.resource = res;
313 davinci_gpio_device.num_resources = size;
314 davinci_gpio_device.dev.platform_data = pdata;
315 return platform_device_register(&davinci_gpio_device);
316 }
317
318 /*-------------------------------------------------------------------------*/
319
320 /*-------------------------------------------------------------------------*/
321
322 struct davinci_timer_instance davinci_timer_instance[2] = {
323 {
324 .base = DAVINCI_TIMER0_BASE,
325 .bottom_irq = IRQ_TINT0_TINT12,
326 .top_irq = IRQ_TINT0_TINT34,
327 },
328 {
329 .base = DAVINCI_TIMER1_BASE,
330 .bottom_irq = IRQ_TINT1_TINT12,
331 .top_irq = IRQ_TINT1_TINT34,
332 },
333 };
334
335