1 /*
2 * linux/arch/arm/mach-realview/core.c
3 *
4 * Copyright (C) 1999 - 2003 ARM Limited
5 * Copyright (C) 2000 Deep Blue Solutions Ltd
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21 #include <linux/init.h>
22 #include <linux/platform_device.h>
23 #include <linux/dma-mapping.h>
24 #include <linux/device.h>
25 #include <linux/interrupt.h>
26 #include <linux/amba/bus.h>
27 #include <linux/amba/clcd.h>
28 #include <linux/platform_data/video-clcd-versatile.h>
29 #include <linux/io.h>
30 #include <linux/smsc911x.h>
31 #include <linux/smc91x.h>
32 #include <linux/ata_platform.h>
33 #include <linux/amba/mmci.h>
34 #include <linux/gfp.h>
35 #include <linux/mtd/physmap.h>
36 #include <linux/memblock.h>
37
38 #include <clocksource/timer-sp804.h>
39
40 #include <mach/hardware.h>
41 #include <asm/irq.h>
42 #include <asm/mach-types.h>
43 #include <asm/hardware/icst.h>
44
45 #include <asm/mach/arch.h>
46 #include <asm/mach/irq.h>
47 #include <asm/mach/map.h>
48
49 #include <mach/platform.h>
50 #include <mach/irqs.h>
51
52 #include <plat/sched_clock.h>
53
54 #include "core.h"
55
56 #define REALVIEW_FLASHCTRL (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_FLASH_OFFSET)
57
realview_flash_set_vpp(struct platform_device * pdev,int on)58 static void realview_flash_set_vpp(struct platform_device *pdev, int on)
59 {
60 u32 val;
61
62 val = __raw_readl(REALVIEW_FLASHCTRL);
63 if (on)
64 val |= REALVIEW_FLASHPROG_FLVPPEN;
65 else
66 val &= ~REALVIEW_FLASHPROG_FLVPPEN;
67 __raw_writel(val, REALVIEW_FLASHCTRL);
68 }
69
70 static struct physmap_flash_data realview_flash_data = {
71 .width = 4,
72 .set_vpp = realview_flash_set_vpp,
73 };
74
75 struct platform_device realview_flash_device = {
76 .name = "physmap-flash",
77 .id = 0,
78 .dev = {
79 .platform_data = &realview_flash_data,
80 },
81 };
82
realview_flash_register(struct resource * res,u32 num)83 int realview_flash_register(struct resource *res, u32 num)
84 {
85 realview_flash_device.resource = res;
86 realview_flash_device.num_resources = num;
87 return platform_device_register(&realview_flash_device);
88 }
89
90 static struct smsc911x_platform_config smsc911x_config = {
91 .flags = SMSC911X_USE_32BIT,
92 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
93 .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
94 .phy_interface = PHY_INTERFACE_MODE_MII,
95 };
96
97 static struct smc91x_platdata smc91x_platdata = {
98 .flags = SMC91X_USE_32BIT | SMC91X_NOWAIT,
99 };
100
101 static struct platform_device realview_eth_device = {
102 .name = "smsc911x",
103 .id = 0,
104 .num_resources = 2,
105 };
106
realview_eth_register(const char * name,struct resource * res)107 int realview_eth_register(const char *name, struct resource *res)
108 {
109 if (name)
110 realview_eth_device.name = name;
111 realview_eth_device.resource = res;
112 if (strcmp(realview_eth_device.name, "smsc911x") == 0)
113 realview_eth_device.dev.platform_data = &smsc911x_config;
114 else
115 realview_eth_device.dev.platform_data = &smc91x_platdata;
116
117 return platform_device_register(&realview_eth_device);
118 }
119
120 struct platform_device realview_usb_device = {
121 .name = "isp1760",
122 .num_resources = 2,
123 };
124
realview_usb_register(struct resource * res)125 int realview_usb_register(struct resource *res)
126 {
127 realview_usb_device.resource = res;
128 return platform_device_register(&realview_usb_device);
129 }
130
131 static struct pata_platform_info pata_platform_data = {
132 .ioport_shift = 1,
133 };
134
135 static struct resource pata_resources[] = {
136 [0] = {
137 .start = REALVIEW_CF_BASE,
138 .end = REALVIEW_CF_BASE + 0xff,
139 .flags = IORESOURCE_MEM,
140 },
141 [1] = {
142 .start = REALVIEW_CF_BASE + 0x100,
143 .end = REALVIEW_CF_BASE + SZ_4K - 1,
144 .flags = IORESOURCE_MEM,
145 },
146 };
147
148 struct platform_device realview_cf_device = {
149 .name = "pata_platform",
150 .id = -1,
151 .num_resources = ARRAY_SIZE(pata_resources),
152 .resource = pata_resources,
153 .dev = {
154 .platform_data = &pata_platform_data,
155 },
156 };
157
158 static struct resource realview_leds_resources[] = {
159 {
160 .start = REALVIEW_SYS_BASE + REALVIEW_SYS_LED_OFFSET,
161 .end = REALVIEW_SYS_BASE + REALVIEW_SYS_LED_OFFSET + 4,
162 .flags = IORESOURCE_MEM,
163 },
164 };
165
166 struct platform_device realview_leds_device = {
167 .name = "versatile-leds",
168 .id = -1,
169 .num_resources = ARRAY_SIZE(realview_leds_resources),
170 .resource = realview_leds_resources,
171 };
172
173 static struct resource realview_i2c_resource = {
174 .start = REALVIEW_I2C_BASE,
175 .end = REALVIEW_I2C_BASE + SZ_4K - 1,
176 .flags = IORESOURCE_MEM,
177 };
178
179 struct platform_device realview_i2c_device = {
180 .name = "versatile-i2c",
181 .id = 0,
182 .num_resources = 1,
183 .resource = &realview_i2c_resource,
184 };
185
186 static struct i2c_board_info realview_i2c_board_info[] = {
187 {
188 I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
189 },
190 };
191
realview_i2c_init(void)192 static int __init realview_i2c_init(void)
193 {
194 return i2c_register_board_info(0, realview_i2c_board_info,
195 ARRAY_SIZE(realview_i2c_board_info));
196 }
197 arch_initcall(realview_i2c_init);
198
199 #define REALVIEW_SYSMCI (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_MCI_OFFSET)
200
201 /*
202 * This is only used if GPIOLIB support is disabled
203 */
realview_mmc_status(struct device * dev)204 static unsigned int realview_mmc_status(struct device *dev)
205 {
206 struct amba_device *adev = container_of(dev, struct amba_device, dev);
207 u32 mask;
208
209 if (machine_is_realview_pb1176()) {
210 static bool inserted = false;
211
212 /*
213 * The PB1176 does not have the status register,
214 * assume it is inserted at startup, then invert
215 * for each call so card insertion/removal will
216 * be detected anyway. This will not be called if
217 * GPIO on PL061 is active, which is the proper
218 * way to do this on the PB1176.
219 */
220 inserted = !inserted;
221 return inserted ? 0 : 1;
222 }
223
224 if (adev->res.start == REALVIEW_MMCI0_BASE)
225 mask = 1;
226 else
227 mask = 2;
228
229 return readl(REALVIEW_SYSMCI) & mask;
230 }
231
232 struct mmci_platform_data realview_mmc0_plat_data = {
233 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
234 .status = realview_mmc_status,
235 .gpio_wp = 17,
236 .gpio_cd = 16,
237 .cd_invert = true,
238 };
239
240 struct mmci_platform_data realview_mmc1_plat_data = {
241 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
242 .status = realview_mmc_status,
243 .gpio_wp = 19,
244 .gpio_cd = 18,
245 .cd_invert = true,
246 };
247
realview_init_early(void)248 void __init realview_init_early(void)
249 {
250 void __iomem *sys = __io_address(REALVIEW_SYS_BASE);
251
252 versatile_sched_clock_init(sys + REALVIEW_SYS_24MHz_OFFSET, 24000000);
253 }
254
255 /*
256 * CLCD support.
257 */
258 #define SYS_CLCD_NLCDIOON (1 << 2)
259 #define SYS_CLCD_VDDPOSSWITCH (1 << 3)
260 #define SYS_CLCD_PWR3V5SWITCH (1 << 4)
261 #define SYS_CLCD_ID_MASK (0x1f << 8)
262 #define SYS_CLCD_ID_SANYO_3_8 (0x00 << 8)
263 #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
264 #define SYS_CLCD_ID_EPSON_2_2 (0x02 << 8)
265 #define SYS_CLCD_ID_SANYO_2_5 (0x07 << 8)
266 #define SYS_CLCD_ID_VGA (0x1f << 8)
267
268 /*
269 * Disable all display connectors on the interface module.
270 */
realview_clcd_disable(struct clcd_fb * fb)271 static void realview_clcd_disable(struct clcd_fb *fb)
272 {
273 void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
274 u32 val;
275
276 val = readl(sys_clcd);
277 val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
278 writel(val, sys_clcd);
279 }
280
281 /*
282 * Enable the relevant connector on the interface module.
283 */
realview_clcd_enable(struct clcd_fb * fb)284 static void realview_clcd_enable(struct clcd_fb *fb)
285 {
286 void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
287 u32 val;
288
289 /*
290 * Enable the PSUs
291 */
292 val = readl(sys_clcd);
293 val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
294 writel(val, sys_clcd);
295 }
296
297 /*
298 * Detect which LCD panel is connected, and return the appropriate
299 * clcd_panel structure. Note: we do not have any information on
300 * the required timings for the 8.4in panel, so we presently assume
301 * VGA timings.
302 */
realview_clcd_setup(struct clcd_fb * fb)303 static int realview_clcd_setup(struct clcd_fb *fb)
304 {
305 void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
306 const char *panel_name, *vga_panel_name;
307 unsigned long framesize;
308 u32 val;
309
310 if (machine_is_realview_eb()) {
311 /* VGA, 16bpp */
312 framesize = 640 * 480 * 2;
313 vga_panel_name = "VGA";
314 } else {
315 /* XVGA, 16bpp */
316 framesize = 1024 * 768 * 2;
317 vga_panel_name = "XVGA";
318 }
319
320 val = readl(sys_clcd) & SYS_CLCD_ID_MASK;
321 if (val == SYS_CLCD_ID_SANYO_3_8)
322 panel_name = "Sanyo TM38QV67A02A";
323 else if (val == SYS_CLCD_ID_SANYO_2_5)
324 panel_name = "Sanyo QVGA Portrait";
325 else if (val == SYS_CLCD_ID_EPSON_2_2)
326 panel_name = "Epson L2F50113T00";
327 else if (val == SYS_CLCD_ID_VGA)
328 panel_name = vga_panel_name;
329 else {
330 pr_err("CLCD: unknown LCD panel ID 0x%08x, using VGA\n", val);
331 panel_name = vga_panel_name;
332 }
333
334 fb->panel = versatile_clcd_get_panel(panel_name);
335 if (!fb->panel)
336 return -EINVAL;
337
338 return versatile_clcd_setup_dma(fb, framesize);
339 }
340
341 struct clcd_board clcd_plat_data = {
342 .name = "RealView",
343 .caps = CLCD_CAP_ALL,
344 .check = clcdfb_check,
345 .decode = clcdfb_decode,
346 .disable = realview_clcd_disable,
347 .enable = realview_clcd_enable,
348 .setup = realview_clcd_setup,
349 .mmap = versatile_clcd_mmap_dma,
350 .remove = versatile_clcd_remove_dma,
351 };
352
353 /*
354 * Where is the timer (VA)?
355 */
356 void __iomem *timer0_va_base;
357 void __iomem *timer1_va_base;
358 void __iomem *timer2_va_base;
359 void __iomem *timer3_va_base;
360
361 /*
362 * Set up the clock source and clock events devices
363 */
realview_timer_init(unsigned int timer_irq)364 void __init realview_timer_init(unsigned int timer_irq)
365 {
366 u32 val;
367
368 /*
369 * set clock frequency:
370 * REALVIEW_REFCLK is 32KHz
371 * REALVIEW_TIMCLK is 1MHz
372 */
373 val = readl(__io_address(REALVIEW_SCTL_BASE));
374 writel((REALVIEW_TIMCLK << REALVIEW_TIMER1_EnSel) |
375 (REALVIEW_TIMCLK << REALVIEW_TIMER2_EnSel) |
376 (REALVIEW_TIMCLK << REALVIEW_TIMER3_EnSel) |
377 (REALVIEW_TIMCLK << REALVIEW_TIMER4_EnSel) | val,
378 __io_address(REALVIEW_SCTL_BASE));
379
380 /*
381 * Initialise to a known state (all timers off)
382 */
383 sp804_timer_disable(timer0_va_base);
384 sp804_timer_disable(timer1_va_base);
385 sp804_timer_disable(timer2_va_base);
386 sp804_timer_disable(timer3_va_base);
387
388 sp804_clocksource_init(timer3_va_base, "timer3");
389 sp804_clockevents_init(timer0_va_base, timer_irq, "timer0");
390 }
391
392 /*
393 * Setup the memory banks.
394 */
realview_fixup(struct tag * tags,char ** from)395 void realview_fixup(struct tag *tags, char **from)
396 {
397 /*
398 * Most RealView platforms have 512MB contiguous RAM at 0x70000000.
399 * Half of this is mirrored at 0.
400 */
401 #ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
402 memblock_add(0x70000000, SZ_512M);
403 #else
404 memblock_add(0, SZ_256M);
405 #endif
406 }
407