2 * linux/arch/arm/mach-realview/core.c
4 * Copyright (C) 1999 - 2003 ARM Limited
5 * Copyright (C) 2000 Deep Blue Solutions Ltd
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.
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.
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
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>
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>
35 #include <mach/hardware.h>
37 #include <asm/mach-types.h>
38 #include <asm/hardware/arm_timer.h>
39 #include <asm/hardware/icst.h>
41 #include <asm/mach/arch.h>
42 #include <asm/mach/irq.h>
43 #include <asm/mach/map.h>
46 #include <mach/platform.h>
47 #include <mach/irqs.h>
48 #include <asm/hardware/timer-sp.h>
50 #include <plat/clcd.h>
51 #include <plat/sched_clock.h>
55 #define REALVIEW_FLASHCTRL (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_FLASH_OFFSET)
57 static void realview_flash_set_vpp(struct platform_device *pdev, int on)
61 val = __raw_readl(REALVIEW_FLASHCTRL);
63 val |= REALVIEW_FLASHPROG_FLVPPEN;
65 val &= ~REALVIEW_FLASHPROG_FLVPPEN;
66 __raw_writel(val, REALVIEW_FLASHCTRL);
69 static struct physmap_flash_data realview_flash_data = {
71 .set_vpp = realview_flash_set_vpp,
74 struct platform_device realview_flash_device = {
75 .name = "physmap-flash",
78 .platform_data = &realview_flash_data,
82 int realview_flash_register(struct resource *res, u32 num)
84 realview_flash_device.resource = res;
85 realview_flash_device.num_resources = num;
86 return platform_device_register(&realview_flash_device);
89 static 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,
96 static struct platform_device realview_eth_device = {
102 int realview_eth_register(const char *name, struct resource *res)
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;
110 return platform_device_register(&realview_eth_device);
113 struct platform_device realview_usb_device = {
118 int realview_usb_register(struct resource *res)
120 realview_usb_device.resource = res;
121 return platform_device_register(&realview_usb_device);
124 static struct pata_platform_info pata_platform_data = {
128 static struct resource pata_resources[] = {
130 .start = REALVIEW_CF_BASE,
131 .end = REALVIEW_CF_BASE + 0xff,
132 .flags = IORESOURCE_MEM,
135 .start = REALVIEW_CF_BASE + 0x100,
136 .end = REALVIEW_CF_BASE + SZ_4K - 1,
137 .flags = IORESOURCE_MEM,
141 struct platform_device realview_cf_device = {
142 .name = "pata_platform",
144 .num_resources = ARRAY_SIZE(pata_resources),
145 .resource = pata_resources,
147 .platform_data = &pata_platform_data,
151 static struct resource realview_leds_resources[] = {
153 .start = REALVIEW_SYS_BASE + REALVIEW_SYS_LED_OFFSET,
154 .end = REALVIEW_SYS_BASE + REALVIEW_SYS_LED_OFFSET + 4,
155 .flags = IORESOURCE_MEM,
159 struct platform_device realview_leds_device = {
160 .name = "versatile-leds",
162 .num_resources = ARRAY_SIZE(realview_leds_resources),
163 .resource = realview_leds_resources,
166 static struct resource realview_i2c_resource = {
167 .start = REALVIEW_I2C_BASE,
168 .end = REALVIEW_I2C_BASE + SZ_4K - 1,
169 .flags = IORESOURCE_MEM,
172 struct platform_device realview_i2c_device = {
173 .name = "versatile-i2c",
176 .resource = &realview_i2c_resource,
179 static struct i2c_board_info realview_i2c_board_info[] = {
181 I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
185 static int __init realview_i2c_init(void)
187 return i2c_register_board_info(0, realview_i2c_board_info,
188 ARRAY_SIZE(realview_i2c_board_info));
190 arch_initcall(realview_i2c_init);
192 #define REALVIEW_SYSMCI (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_MCI_OFFSET)
195 * This is only used if GPIOLIB support is disabled
197 static unsigned int realview_mmc_status(struct device *dev)
199 struct amba_device *adev = container_of(dev, struct amba_device, dev);
202 if (machine_is_realview_pb1176()) {
203 static bool inserted = false;
206 * The PB1176 does not have the status register,
207 * assume it is inserted at startup, then invert
208 * for each call so card insertion/removal will
209 * be detected anyway. This will not be called if
210 * GPIO on PL061 is active, which is the proper
211 * way to do this on the PB1176.
213 inserted = !inserted;
214 return inserted ? 0 : 1;
217 if (adev->res.start == REALVIEW_MMCI0_BASE)
222 return readl(REALVIEW_SYSMCI) & mask;
225 struct mmci_platform_data realview_mmc0_plat_data = {
226 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
227 .status = realview_mmc_status,
233 struct mmci_platform_data realview_mmc1_plat_data = {
234 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
235 .status = realview_mmc_status,
241 void __init realview_init_early(void)
243 void __iomem *sys = __io_address(REALVIEW_SYS_BASE);
245 versatile_sched_clock_init(sys + REALVIEW_SYS_24MHz_OFFSET, 24000000);
251 #define SYS_CLCD_NLCDIOON (1 << 2)
252 #define SYS_CLCD_VDDPOSSWITCH (1 << 3)
253 #define SYS_CLCD_PWR3V5SWITCH (1 << 4)
254 #define SYS_CLCD_ID_MASK (0x1f << 8)
255 #define SYS_CLCD_ID_SANYO_3_8 (0x00 << 8)
256 #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
257 #define SYS_CLCD_ID_EPSON_2_2 (0x02 << 8)
258 #define SYS_CLCD_ID_SANYO_2_5 (0x07 << 8)
259 #define SYS_CLCD_ID_VGA (0x1f << 8)
262 * Disable all display connectors on the interface module.
264 static void realview_clcd_disable(struct clcd_fb *fb)
266 void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
269 val = readl(sys_clcd);
270 val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
271 writel(val, sys_clcd);
275 * Enable the relevant connector on the interface module.
277 static void realview_clcd_enable(struct clcd_fb *fb)
279 void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
285 val = readl(sys_clcd);
286 val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
287 writel(val, sys_clcd);
291 * Detect which LCD panel is connected, and return the appropriate
292 * clcd_panel structure. Note: we do not have any information on
293 * the required timings for the 8.4in panel, so we presently assume
296 static int realview_clcd_setup(struct clcd_fb *fb)
298 void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
299 const char *panel_name, *vga_panel_name;
300 unsigned long framesize;
303 if (machine_is_realview_eb()) {
305 framesize = 640 * 480 * 2;
306 vga_panel_name = "VGA";
309 framesize = 1024 * 768 * 2;
310 vga_panel_name = "XVGA";
313 val = readl(sys_clcd) & SYS_CLCD_ID_MASK;
314 if (val == SYS_CLCD_ID_SANYO_3_8)
315 panel_name = "Sanyo TM38QV67A02A";
316 else if (val == SYS_CLCD_ID_SANYO_2_5)
317 panel_name = "Sanyo QVGA Portrait";
318 else if (val == SYS_CLCD_ID_EPSON_2_2)
319 panel_name = "Epson L2F50113T00";
320 else if (val == SYS_CLCD_ID_VGA)
321 panel_name = vga_panel_name;
323 pr_err("CLCD: unknown LCD panel ID 0x%08x, using VGA\n", val);
324 panel_name = vga_panel_name;
327 fb->panel = versatile_clcd_get_panel(panel_name);
331 return versatile_clcd_setup_dma(fb, framesize);
334 struct clcd_board clcd_plat_data = {
336 .caps = CLCD_CAP_ALL,
337 .check = clcdfb_check,
338 .decode = clcdfb_decode,
339 .disable = realview_clcd_disable,
340 .enable = realview_clcd_enable,
341 .setup = realview_clcd_setup,
342 .mmap = versatile_clcd_mmap_dma,
343 .remove = versatile_clcd_remove_dma,
347 * Where is the timer (VA)?
349 void __iomem *timer0_va_base;
350 void __iomem *timer1_va_base;
351 void __iomem *timer2_va_base;
352 void __iomem *timer3_va_base;
355 * Set up the clock source and clock events devices
357 void __init realview_timer_init(unsigned int timer_irq)
362 * set clock frequency:
363 * REALVIEW_REFCLK is 32KHz
364 * REALVIEW_TIMCLK is 1MHz
366 val = readl(__io_address(REALVIEW_SCTL_BASE));
367 writel((REALVIEW_TIMCLK << REALVIEW_TIMER1_EnSel) |
368 (REALVIEW_TIMCLK << REALVIEW_TIMER2_EnSel) |
369 (REALVIEW_TIMCLK << REALVIEW_TIMER3_EnSel) |
370 (REALVIEW_TIMCLK << REALVIEW_TIMER4_EnSel) | val,
371 __io_address(REALVIEW_SCTL_BASE));
374 * Initialise to a known state (all timers off)
376 writel(0, timer0_va_base + TIMER_CTRL);
377 writel(0, timer1_va_base + TIMER_CTRL);
378 writel(0, timer2_va_base + TIMER_CTRL);
379 writel(0, timer3_va_base + TIMER_CTRL);
381 sp804_clocksource_init(timer3_va_base, "timer3");
382 sp804_clockevents_init(timer0_va_base, timer_irq, "timer0");
386 * Setup the memory banks.
388 void realview_fixup(struct tag *tags, char **from, struct meminfo *meminfo)
391 * Most RealView platforms have 512MB contiguous RAM at 0x70000000.
392 * Half of this is mirrored at 0.
394 #ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
395 meminfo->bank[0].start = 0x70000000;
396 meminfo->bank[0].size = SZ_512M;
397 meminfo->nr_banks = 1;
399 meminfo->bank[0].start = 0;
400 meminfo->bank[0].size = SZ_256M;
401 meminfo->nr_banks = 1;