1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * mach-davinci/devices.c
4 *
5 * DaVinci platform device setup/initialization
6 */
7
8 #include <linux/init.h>
9 #include <linux/platform_device.h>
10 #include <linux/platform_data/i2c-davinci.h>
11 #include <linux/platform_data/mmc-davinci.h>
12 #include <linux/platform_data/edma.h>
13 #include <linux/dma-mapping.h>
14 #include <linux/io.h>
15 #include <linux/reboot.h>
16
17 #include <mach/hardware.h>
18 #include <mach/cputype.h>
19 #include <mach/mux.h>
20 #include <mach/time.h>
21
22 #include "davinci.h"
23 #include "irqs.h"
24
25 #define DAVINCI_I2C_BASE 0x01C21000
26 #define DAVINCI_ATA_BASE 0x01C66000
27 #define DAVINCI_MMCSD0_BASE 0x01E10000
28 #define DM355_MMCSD0_BASE 0x01E11000
29 #define DM355_MMCSD1_BASE 0x01E00000
30 #define DM365_MMCSD0_BASE 0x01D11000
31 #define DM365_MMCSD1_BASE 0x01D00000
32
33 void __iomem *davinci_sysmod_base;
34
davinci_map_sysmod(void)35 void davinci_map_sysmod(void)
36 {
37 davinci_sysmod_base = ioremap_nocache(DAVINCI_SYSTEM_MODULE_BASE,
38 0x800);
39 /*
40 * Throw a bug since a lot of board initialization code depends
41 * on system module availability. ioremap() failing this early
42 * need careful looking into anyway.
43 */
44 BUG_ON(!davinci_sysmod_base);
45 }
46
47 static struct resource i2c_resources[] = {
48 {
49 .start = DAVINCI_I2C_BASE,
50 .end = DAVINCI_I2C_BASE + 0x40,
51 .flags = IORESOURCE_MEM,
52 },
53 {
54 .start = DAVINCI_INTC_IRQ(IRQ_I2C),
55 .flags = IORESOURCE_IRQ,
56 },
57 };
58
59 static struct platform_device davinci_i2c_device = {
60 .name = "i2c_davinci",
61 .id = 1,
62 .num_resources = ARRAY_SIZE(i2c_resources),
63 .resource = i2c_resources,
64 };
65
davinci_init_i2c(struct davinci_i2c_platform_data * pdata)66 void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
67 {
68 if (cpu_is_davinci_dm644x())
69 davinci_cfg_reg(DM644X_I2C);
70
71 davinci_i2c_device.dev.platform_data = pdata;
72 (void) platform_device_register(&davinci_i2c_device);
73 }
74
75 static struct resource ide_resources[] = {
76 {
77 .start = DAVINCI_ATA_BASE,
78 .end = DAVINCI_ATA_BASE + 0x7ff,
79 .flags = IORESOURCE_MEM,
80 },
81 {
82 .start = DAVINCI_INTC_IRQ(IRQ_IDE),
83 .end = DAVINCI_INTC_IRQ(IRQ_IDE),
84 .flags = IORESOURCE_IRQ,
85 },
86 };
87
88 static u64 ide_dma_mask = DMA_BIT_MASK(32);
89
90 static struct platform_device ide_device = {
91 .name = "palm_bk3710",
92 .id = -1,
93 .resource = ide_resources,
94 .num_resources = ARRAY_SIZE(ide_resources),
95 .dev = {
96 .dma_mask = &ide_dma_mask,
97 .coherent_dma_mask = DMA_BIT_MASK(32),
98 },
99 };
100
davinci_init_ide(void)101 void __init davinci_init_ide(void)
102 {
103 if (cpu_is_davinci_dm644x()) {
104 davinci_cfg_reg(DM644X_HPIEN_DISABLE);
105 davinci_cfg_reg(DM644X_ATAEN);
106 davinci_cfg_reg(DM644X_HDIREN);
107 } else if (cpu_is_davinci_dm646x()) {
108 /* IRQ_DM646X_IDE is the same as IRQ_IDE */
109 davinci_cfg_reg(DM646X_ATAEN);
110 } else {
111 WARN_ON(1);
112 return;
113 }
114
115 platform_device_register(&ide_device);
116 }
117
118 #if IS_ENABLED(CONFIG_MMC_DAVINCI)
119
120 static u64 mmcsd0_dma_mask = DMA_BIT_MASK(32);
121
122 static struct resource mmcsd0_resources[] = {
123 {
124 /* different on dm355 */
125 .start = DAVINCI_MMCSD0_BASE,
126 .end = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
127 .flags = IORESOURCE_MEM,
128 },
129 /* IRQs: MMC/SD, then SDIO */
130 {
131 .start = DAVINCI_INTC_IRQ(IRQ_MMCINT),
132 .flags = IORESOURCE_IRQ,
133 }, {
134 /* different on dm355 */
135 .start = DAVINCI_INTC_IRQ(IRQ_SDIOINT),
136 .flags = IORESOURCE_IRQ,
137 },
138 };
139
140 static struct platform_device davinci_mmcsd0_device = {
141 .name = "dm6441-mmc",
142 .id = 0,
143 .dev = {
144 .dma_mask = &mmcsd0_dma_mask,
145 .coherent_dma_mask = DMA_BIT_MASK(32),
146 },
147 .num_resources = ARRAY_SIZE(mmcsd0_resources),
148 .resource = mmcsd0_resources,
149 };
150
151 static u64 mmcsd1_dma_mask = DMA_BIT_MASK(32);
152
153 static struct resource mmcsd1_resources[] = {
154 {
155 .start = DM355_MMCSD1_BASE,
156 .end = DM355_MMCSD1_BASE + SZ_4K - 1,
157 .flags = IORESOURCE_MEM,
158 },
159 /* IRQs: MMC/SD, then SDIO */
160 {
161 .start = DAVINCI_INTC_IRQ(IRQ_DM355_MMCINT1),
162 .flags = IORESOURCE_IRQ,
163 }, {
164 .start = DAVINCI_INTC_IRQ(IRQ_DM355_SDIOINT1),
165 .flags = IORESOURCE_IRQ,
166 },
167 };
168
169 static struct platform_device davinci_mmcsd1_device = {
170 .name = "dm6441-mmc",
171 .id = 1,
172 .dev = {
173 .dma_mask = &mmcsd1_dma_mask,
174 .coherent_dma_mask = DMA_BIT_MASK(32),
175 },
176 .num_resources = ARRAY_SIZE(mmcsd1_resources),
177 .resource = mmcsd1_resources,
178 };
179
180
davinci_setup_mmc(int module,struct davinci_mmc_config * config)181 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
182 {
183 struct platform_device *pdev = NULL;
184
185 if (WARN_ON(cpu_is_davinci_dm646x()))
186 return;
187
188 /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
189 * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
190 *
191 * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
192 * not handled right here ...
193 */
194 switch (module) {
195 case 1:
196 if (cpu_is_davinci_dm355()) {
197 /* REVISIT we may not need all these pins if e.g. this
198 * is a hard-wired SDIO device...
199 */
200 davinci_cfg_reg(DM355_SD1_CMD);
201 davinci_cfg_reg(DM355_SD1_CLK);
202 davinci_cfg_reg(DM355_SD1_DATA0);
203 davinci_cfg_reg(DM355_SD1_DATA1);
204 davinci_cfg_reg(DM355_SD1_DATA2);
205 davinci_cfg_reg(DM355_SD1_DATA3);
206 } else if (cpu_is_davinci_dm365()) {
207 /* Configure pull down control */
208 unsigned v;
209
210 v = __raw_readl(DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
211 __raw_writel(v & ~0xfc0,
212 DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
213
214 mmcsd1_resources[0].start = DM365_MMCSD1_BASE;
215 mmcsd1_resources[0].end = DM365_MMCSD1_BASE +
216 SZ_4K - 1;
217 mmcsd1_resources[2].start = DAVINCI_INTC_IRQ(
218 IRQ_DM365_SDIOINT1);
219 davinci_mmcsd1_device.name = "da830-mmc";
220 } else
221 break;
222
223 pdev = &davinci_mmcsd1_device;
224 break;
225 case 0:
226 if (cpu_is_davinci_dm355()) {
227 mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
228 mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
229 mmcsd0_resources[2].start = DAVINCI_INTC_IRQ(
230 IRQ_DM355_SDIOINT0);
231
232 /* expose all 6 MMC0 signals: CLK, CMD, DATA[0..3] */
233 davinci_cfg_reg(DM355_MMCSD0);
234
235 /* enable RX EDMA */
236 davinci_cfg_reg(DM355_EVT26_MMC0_RX);
237 } else if (cpu_is_davinci_dm365()) {
238 mmcsd0_resources[0].start = DM365_MMCSD0_BASE;
239 mmcsd0_resources[0].end = DM365_MMCSD0_BASE +
240 SZ_4K - 1;
241 mmcsd0_resources[2].start = DAVINCI_INTC_IRQ(
242 IRQ_DM365_SDIOINT0);
243 davinci_mmcsd0_device.name = "da830-mmc";
244 } else if (cpu_is_davinci_dm644x()) {
245 /* REVISIT: should this be in board-init code? */
246 /* Power-on 3.3V IO cells */
247 __raw_writel(0,
248 DAVINCI_SYSMOD_VIRT(SYSMOD_VDD3P3VPWDN));
249 /*Set up the pull regiter for MMC */
250 davinci_cfg_reg(DM644X_MSTK);
251 }
252
253 pdev = &davinci_mmcsd0_device;
254 break;
255 }
256
257 if (WARN_ON(!pdev))
258 return;
259
260 pdev->dev.platform_data = config;
261 platform_device_register(pdev);
262 }
263
264 #else
265
davinci_setup_mmc(int module,struct davinci_mmc_config * config)266 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
267 {
268 }
269
270 #endif
271
272 /*-------------------------------------------------------------------------*/
273
274 static struct resource wdt_resources[] = {
275 {
276 .start = DAVINCI_WDOG_BASE,
277 .end = DAVINCI_WDOG_BASE + SZ_1K - 1,
278 .flags = IORESOURCE_MEM,
279 },
280 };
281
282 static struct platform_device davinci_wdt_device = {
283 .name = "davinci-wdt",
284 .id = -1,
285 .num_resources = ARRAY_SIZE(wdt_resources),
286 .resource = wdt_resources,
287 };
288
davinci_init_wdt(void)289 int davinci_init_wdt(void)
290 {
291 return platform_device_register(&davinci_wdt_device);
292 }
293
294 static struct platform_device davinci_gpio_device = {
295 .name = "davinci_gpio",
296 .id = -1,
297 };
298
davinci_gpio_register(struct resource * res,int size,void * pdata)299 int davinci_gpio_register(struct resource *res, int size, void *pdata)
300 {
301 davinci_gpio_device.resource = res;
302 davinci_gpio_device.num_resources = size;
303 davinci_gpio_device.dev.platform_data = pdata;
304 return platform_device_register(&davinci_gpio_device);
305 }
306
307 /*-------------------------------------------------------------------------*/
308
309 /*-------------------------------------------------------------------------*/
310
311 struct davinci_timer_instance davinci_timer_instance[2] = {
312 {
313 .base = DAVINCI_TIMER0_BASE,
314 .bottom_irq = DAVINCI_INTC_IRQ(IRQ_TINT0_TINT12),
315 .top_irq = DAVINCI_INTC_IRQ(IRQ_TINT0_TINT34),
316 },
317 {
318 .base = DAVINCI_TIMER1_BASE,
319 .bottom_irq = DAVINCI_INTC_IRQ(IRQ_TINT1_TINT12),
320 .top_irq = DAVINCI_INTC_IRQ(IRQ_TINT1_TINT34),
321 },
322 };
323
324