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