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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/io.h>
29#include <linux/smsc911x.h>
30#include <linux/ata_platform.h>
31#include <linux/amba/mmci.h>
32#include <linux/gfp.h>
33#include <linux/mtd/physmap.h>
34
35#include <mach/hardware.h>
36#include <asm/irq.h>
37#include <asm/mach-types.h>
38#include <asm/hardware/arm_timer.h>
39#include <asm/hardware/icst.h>
40
41#include <asm/mach/arch.h>
42#include <asm/mach/irq.h>
43#include <asm/mach/map.h>
44
45
46#include <mach/platform.h>
47#include <mach/irqs.h>
48#include <asm/hardware/timer-sp.h>
49
50#include <plat/clcd.h>
51#include <plat/sched_clock.h>
52
53#include "core.h"
54
55#define REALVIEW_FLASHCTRL (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_FLASH_OFFSET)
56
57static void realview_flash_set_vpp(struct platform_device *pdev, int on)
58{
59 u32 val;
60
61 val = __raw_readl(REALVIEW_FLASHCTRL);
62 if (on)
63 val |= REALVIEW_FLASHPROG_FLVPPEN;
64 else
65 val &= ~REALVIEW_FLASHPROG_FLVPPEN;
66 __raw_writel(val, REALVIEW_FLASHCTRL);
67}
68
69static struct physmap_flash_data realview_flash_data = {
70 .width = 4,
71 .set_vpp = realview_flash_set_vpp,
72};
73
74struct platform_device realview_flash_device = {
75 .name = "physmap-flash",
76 .id = 0,
77 .dev = {
78 .platform_data = &realview_flash_data,
79 },
80};
81
82int realview_flash_register(struct resource *res, u32 num)
83{
84 realview_flash_device.resource = res;
85 realview_flash_device.num_resources = num;
86 return platform_device_register(&realview_flash_device);
87}
88
89static struct smsc911x_platform_config smsc911x_config = {
90 .flags = SMSC911X_USE_32BIT,
91 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
92 .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
93 .phy_interface = PHY_INTERFACE_MODE_MII,
94};
95
96static struct platform_device realview_eth_device = {
97 .name = "smsc911x",
98 .id = 0,
99 .num_resources = 2,
100};
101
102int realview_eth_register(const char *name, struct resource *res)
103{
104 if (name)
105 realview_eth_device.name = name;
106 realview_eth_device.resource = res;
107 if (strcmp(realview_eth_device.name, "smsc911x") == 0)
108 realview_eth_device.dev.platform_data = &smsc911x_config;
109
110 return platform_device_register(&realview_eth_device);
111}
112
113struct platform_device realview_usb_device = {
114 .name = "isp1760",
115 .num_resources = 2,
116};
117
118int realview_usb_register(struct resource *res)
119{
120 realview_usb_device.resource = res;
121 return platform_device_register(&realview_usb_device);
122}
123
124static struct pata_platform_info pata_platform_data = {
125 .ioport_shift = 1,
126};
127
128static struct resource pata_resources[] = {
129 [0] = {
130 .start = REALVIEW_CF_BASE,
131 .end = REALVIEW_CF_BASE + 0xff,
132 .flags = IORESOURCE_MEM,
133 },
134 [1] = {
135 .start = REALVIEW_CF_BASE + 0x100,
136 .end = REALVIEW_CF_BASE + SZ_4K - 1,
137 .flags = IORESOURCE_MEM,
138 },
139};
140
141struct platform_device realview_cf_device = {
142 .name = "pata_platform",
143 .id = -1,
144 .num_resources = ARRAY_SIZE(pata_resources),
145 .resource = pata_resources,
146 .dev = {
147 .platform_data = &pata_platform_data,
148 },
149};
150
151static struct resource realview_i2c_resource = {
152 .start = REALVIEW_I2C_BASE,
153 .end = REALVIEW_I2C_BASE + SZ_4K - 1,
154 .flags = IORESOURCE_MEM,
155};
156
157struct platform_device realview_i2c_device = {
158 .name = "versatile-i2c",
159 .id = 0,
160 .num_resources = 1,
161 .resource = &realview_i2c_resource,
162};
163
164static struct i2c_board_info realview_i2c_board_info[] = {
165 {
166 I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
167 },
168};
169
170static int __init realview_i2c_init(void)
171{
172 return i2c_register_board_info(0, realview_i2c_board_info,
173 ARRAY_SIZE(realview_i2c_board_info));
174}
175arch_initcall(realview_i2c_init);
176
177#define REALVIEW_SYSMCI (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_MCI_OFFSET)
178
179/*
180 * This is only used if GPIOLIB support is disabled
181 */
182static unsigned int realview_mmc_status(struct device *dev)
183{
184 struct amba_device *adev = container_of(dev, struct amba_device, dev);
185 u32 mask;
186
187 if (machine_is_realview_pb1176()) {
188 static bool inserted = false;
189
190 /*
191 * The PB1176 does not have the status register,
192 * assume it is inserted at startup, then invert
193 * for each call so card insertion/removal will
194 * be detected anyway. This will not be called if
195 * GPIO on PL061 is active, which is the proper
196 * way to do this on the PB1176.
197 */
198 inserted = !inserted;
199 return inserted ? 0 : 1;
200 }
201
202 if (adev->res.start == REALVIEW_MMCI0_BASE)
203 mask = 1;
204 else
205 mask = 2;
206
207 return readl(REALVIEW_SYSMCI) & mask;
208}
209
210struct mmci_platform_data realview_mmc0_plat_data = {
211 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
212 .status = realview_mmc_status,
213 .gpio_wp = 17,
214 .gpio_cd = 16,
215 .cd_invert = true,
216};
217
218struct mmci_platform_data realview_mmc1_plat_data = {
219 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
220 .status = realview_mmc_status,
221 .gpio_wp = 19,
222 .gpio_cd = 18,
223 .cd_invert = true,
224};
225
226void __init realview_init_early(void)
227{
228 void __iomem *sys = __io_address(REALVIEW_SYS_BASE);
229
230 versatile_sched_clock_init(sys + REALVIEW_SYS_24MHz_OFFSET, 24000000);
231}
232
233/*
234 * CLCD support.
235 */
236#define SYS_CLCD_NLCDIOON (1 << 2)
237#define SYS_CLCD_VDDPOSSWITCH (1 << 3)
238#define SYS_CLCD_PWR3V5SWITCH (1 << 4)
239#define SYS_CLCD_ID_MASK (0x1f << 8)
240#define SYS_CLCD_ID_SANYO_3_8 (0x00 << 8)
241#define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
242#define SYS_CLCD_ID_EPSON_2_2 (0x02 << 8)
243#define SYS_CLCD_ID_SANYO_2_5 (0x07 << 8)
244#define SYS_CLCD_ID_VGA (0x1f << 8)
245
246/*
247 * Disable all display connectors on the interface module.
248 */
249static void realview_clcd_disable(struct clcd_fb *fb)
250{
251 void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
252 u32 val;
253
254 val = readl(sys_clcd);
255 val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
256 writel(val, sys_clcd);
257}
258
259/*
260 * Enable the relevant connector on the interface module.
261 */
262static void realview_clcd_enable(struct clcd_fb *fb)
263{
264 void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
265 u32 val;
266
267 /*
268 * Enable the PSUs
269 */
270 val = readl(sys_clcd);
271 val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
272 writel(val, sys_clcd);
273}
274
275/*
276 * Detect which LCD panel is connected, and return the appropriate
277 * clcd_panel structure. Note: we do not have any information on
278 * the required timings for the 8.4in panel, so we presently assume
279 * VGA timings.
280 */
281static int realview_clcd_setup(struct clcd_fb *fb)
282{
283 void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
284 const char *panel_name, *vga_panel_name;
285 unsigned long framesize;
286 u32 val;
287
288 if (machine_is_realview_eb()) {
289 /* VGA, 16bpp */
290 framesize = 640 * 480 * 2;
291 vga_panel_name = "VGA";
292 } else {
293 /* XVGA, 16bpp */
294 framesize = 1024 * 768 * 2;
295 vga_panel_name = "XVGA";
296 }
297
298 val = readl(sys_clcd) & SYS_CLCD_ID_MASK;
299 if (val == SYS_CLCD_ID_SANYO_3_8)
300 panel_name = "Sanyo TM38QV67A02A";
301 else if (val == SYS_CLCD_ID_SANYO_2_5)
302 panel_name = "Sanyo QVGA Portrait";
303 else if (val == SYS_CLCD_ID_EPSON_2_2)
304 panel_name = "Epson L2F50113T00";
305 else if (val == SYS_CLCD_ID_VGA)
306 panel_name = vga_panel_name;
307 else {
308 pr_err("CLCD: unknown LCD panel ID 0x%08x, using VGA\n", val);
309 panel_name = vga_panel_name;
310 }
311
312 fb->panel = versatile_clcd_get_panel(panel_name);
313 if (!fb->panel)
314 return -EINVAL;
315
316 return versatile_clcd_setup_dma(fb, framesize);
317}
318
319struct clcd_board clcd_plat_data = {
320 .name = "RealView",
321 .caps = CLCD_CAP_ALL,
322 .check = clcdfb_check,
323 .decode = clcdfb_decode,
324 .disable = realview_clcd_disable,
325 .enable = realview_clcd_enable,
326 .setup = realview_clcd_setup,
327 .mmap = versatile_clcd_mmap_dma,
328 .remove = versatile_clcd_remove_dma,
329};
330
331/*
332 * Where is the timer (VA)?
333 */
334void __iomem *timer0_va_base;
335void __iomem *timer1_va_base;
336void __iomem *timer2_va_base;
337void __iomem *timer3_va_base;
338
339/*
340 * Set up the clock source and clock events devices
341 */
342void __init realview_timer_init(unsigned int timer_irq)
343{
344 u32 val;
345
346 /*
347 * set clock frequency:
348 * REALVIEW_REFCLK is 32KHz
349 * REALVIEW_TIMCLK is 1MHz
350 */
351 val = readl(__io_address(REALVIEW_SCTL_BASE));
352 writel((REALVIEW_TIMCLK << REALVIEW_TIMER1_EnSel) |
353 (REALVIEW_TIMCLK << REALVIEW_TIMER2_EnSel) |
354 (REALVIEW_TIMCLK << REALVIEW_TIMER3_EnSel) |
355 (REALVIEW_TIMCLK << REALVIEW_TIMER4_EnSel) | val,
356 __io_address(REALVIEW_SCTL_BASE));
357
358 /*
359 * Initialise to a known state (all timers off)
360 */
361 writel(0, timer0_va_base + TIMER_CTRL);
362 writel(0, timer1_va_base + TIMER_CTRL);
363 writel(0, timer2_va_base + TIMER_CTRL);
364 writel(0, timer3_va_base + TIMER_CTRL);
365
366 sp804_clocksource_init(timer3_va_base, "timer3");
367 sp804_clockevents_init(timer0_va_base, timer_irq, "timer0");
368}
369
370/*
371 * Setup the memory banks.
372 */
373void realview_fixup(struct tag *tags, char **from, struct meminfo *meminfo)
374{
375 /*
376 * Most RealView platforms have 512MB contiguous RAM at 0x70000000.
377 * Half of this is mirrored at 0.
378 */
379#ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
380 meminfo->bank[0].start = 0x70000000;
381 meminfo->bank[0].size = SZ_512M;
382 meminfo->nr_banks = 1;
383#else
384 meminfo->bank[0].start = 0;
385 meminfo->bank[0].size = SZ_256M;
386 meminfo->nr_banks = 1;
387#endif
388}