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>
28 #include <linux/platform_data/video-clcd-versatile.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>
38 #include <clocksource/timer-sp804.h>
41 #include <asm/mach-types.h>
42 #include <asm/hardware/icst.h>
44 #include <asm/mach/arch.h>
45 #include <asm/mach/irq.h>
46 #include <asm/mach/map.h>
50 #include <plat/sched_clock.h>
54 #define REALVIEW_FLASHCTRL (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_FLASH_OFFSET)
56 static void realview_flash_set_vpp(struct platform_device
*pdev
, int on
)
60 val
= __raw_readl(REALVIEW_FLASHCTRL
);
62 val
|= REALVIEW_FLASHPROG_FLVPPEN
;
64 val
&= ~REALVIEW_FLASHPROG_FLVPPEN
;
65 __raw_writel(val
, REALVIEW_FLASHCTRL
);
68 static struct physmap_flash_data realview_flash_data
= {
70 .set_vpp
= realview_flash_set_vpp
,
73 struct platform_device realview_flash_device
= {
74 .name
= "physmap-flash",
77 .platform_data
= &realview_flash_data
,
81 int realview_flash_register(struct resource
*res
, u32 num
)
83 realview_flash_device
.resource
= res
;
84 realview_flash_device
.num_resources
= num
;
85 return platform_device_register(&realview_flash_device
);
88 static struct smsc911x_platform_config smsc911x_config
= {
89 .flags
= SMSC911X_USE_32BIT
,
90 .irq_polarity
= SMSC911X_IRQ_POLARITY_ACTIVE_HIGH
,
91 .irq_type
= SMSC911X_IRQ_TYPE_PUSH_PULL
,
92 .phy_interface
= PHY_INTERFACE_MODE_MII
,
95 static struct smc91x_platdata smc91x_platdata
= {
96 .flags
= SMC91X_USE_32BIT
| SMC91X_NOWAIT
,
99 static struct platform_device realview_eth_device
= {
105 int realview_eth_register(const char *name
, struct resource
*res
)
108 realview_eth_device
.name
= name
;
109 realview_eth_device
.resource
= res
;
110 if (strcmp(realview_eth_device
.name
, "smsc911x") == 0)
111 realview_eth_device
.dev
.platform_data
= &smsc911x_config
;
113 realview_eth_device
.dev
.platform_data
= &smc91x_platdata
;
115 return platform_device_register(&realview_eth_device
);
118 struct platform_device realview_usb_device
= {
123 int realview_usb_register(struct resource
*res
)
125 realview_usb_device
.resource
= res
;
126 return platform_device_register(&realview_usb_device
);
129 static struct pata_platform_info pata_platform_data
= {
133 static struct resource pata_resources
[] = {
135 .start
= REALVIEW_CF_BASE
,
136 .end
= REALVIEW_CF_BASE
+ 0xff,
137 .flags
= IORESOURCE_MEM
,
140 .start
= REALVIEW_CF_BASE
+ 0x100,
141 .end
= REALVIEW_CF_BASE
+ SZ_4K
- 1,
142 .flags
= IORESOURCE_MEM
,
146 struct platform_device realview_cf_device
= {
147 .name
= "pata_platform",
149 .num_resources
= ARRAY_SIZE(pata_resources
),
150 .resource
= pata_resources
,
152 .platform_data
= &pata_platform_data
,
156 static struct resource realview_leds_resources
[] = {
158 .start
= REALVIEW_SYS_BASE
+ REALVIEW_SYS_LED_OFFSET
,
159 .end
= REALVIEW_SYS_BASE
+ REALVIEW_SYS_LED_OFFSET
+ 4,
160 .flags
= IORESOURCE_MEM
,
164 struct platform_device realview_leds_device
= {
165 .name
= "versatile-leds",
167 .num_resources
= ARRAY_SIZE(realview_leds_resources
),
168 .resource
= realview_leds_resources
,
171 static struct resource realview_i2c_resource
= {
172 .start
= REALVIEW_I2C_BASE
,
173 .end
= REALVIEW_I2C_BASE
+ SZ_4K
- 1,
174 .flags
= IORESOURCE_MEM
,
177 struct platform_device realview_i2c_device
= {
178 .name
= "versatile-i2c",
181 .resource
= &realview_i2c_resource
,
184 static struct i2c_board_info realview_i2c_board_info
[] = {
186 I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
190 static int __init
realview_i2c_init(void)
192 return i2c_register_board_info(0, realview_i2c_board_info
,
193 ARRAY_SIZE(realview_i2c_board_info
));
195 arch_initcall(realview_i2c_init
);
197 #define REALVIEW_SYSMCI (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_MCI_OFFSET)
200 * This is only used if GPIOLIB support is disabled
202 static unsigned int realview_mmc_status(struct device
*dev
)
204 struct amba_device
*adev
= container_of(dev
, struct amba_device
, dev
);
207 if (machine_is_realview_pb1176()) {
208 static bool inserted
= false;
211 * The PB1176 does not have the status register,
212 * assume it is inserted at startup, then invert
213 * for each call so card insertion/removal will
214 * be detected anyway. This will not be called if
215 * GPIO on PL061 is active, which is the proper
216 * way to do this on the PB1176.
218 inserted
= !inserted
;
219 return inserted
? 0 : 1;
222 if (adev
->res
.start
== REALVIEW_MMCI0_BASE
)
227 return readl(REALVIEW_SYSMCI
) & mask
;
230 struct mmci_platform_data realview_mmc0_plat_data
= {
231 .ocr_mask
= MMC_VDD_32_33
|MMC_VDD_33_34
,
232 .status
= realview_mmc_status
,
238 struct mmci_platform_data realview_mmc1_plat_data
= {
239 .ocr_mask
= MMC_VDD_32_33
|MMC_VDD_33_34
,
240 .status
= realview_mmc_status
,
246 void __init
realview_init_early(void)
248 void __iomem
*sys
= __io_address(REALVIEW_SYS_BASE
);
250 versatile_sched_clock_init(sys
+ REALVIEW_SYS_24MHz_OFFSET
, 24000000);
256 #define SYS_CLCD_NLCDIOON (1 << 2)
257 #define SYS_CLCD_VDDPOSSWITCH (1 << 3)
258 #define SYS_CLCD_PWR3V5SWITCH (1 << 4)
259 #define SYS_CLCD_ID_MASK (0x1f << 8)
260 #define SYS_CLCD_ID_SANYO_3_8 (0x00 << 8)
261 #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
262 #define SYS_CLCD_ID_EPSON_2_2 (0x02 << 8)
263 #define SYS_CLCD_ID_SANYO_2_5 (0x07 << 8)
264 #define SYS_CLCD_ID_VGA (0x1f << 8)
267 * Disable all display connectors on the interface module.
269 static void realview_clcd_disable(struct clcd_fb
*fb
)
271 void __iomem
*sys_clcd
= __io_address(REALVIEW_SYS_BASE
) + REALVIEW_SYS_CLCD_OFFSET
;
274 val
= readl(sys_clcd
);
275 val
&= ~SYS_CLCD_NLCDIOON
| SYS_CLCD_PWR3V5SWITCH
;
276 writel(val
, sys_clcd
);
280 * Enable the relevant connector on the interface module.
282 static void realview_clcd_enable(struct clcd_fb
*fb
)
284 void __iomem
*sys_clcd
= __io_address(REALVIEW_SYS_BASE
) + REALVIEW_SYS_CLCD_OFFSET
;
290 val
= readl(sys_clcd
);
291 val
|= SYS_CLCD_NLCDIOON
| SYS_CLCD_PWR3V5SWITCH
;
292 writel(val
, sys_clcd
);
296 * Detect which LCD panel is connected, and return the appropriate
297 * clcd_panel structure. Note: we do not have any information on
298 * the required timings for the 8.4in panel, so we presently assume
301 static int realview_clcd_setup(struct clcd_fb
*fb
)
303 void __iomem
*sys_clcd
= __io_address(REALVIEW_SYS_BASE
) + REALVIEW_SYS_CLCD_OFFSET
;
304 const char *panel_name
, *vga_panel_name
;
305 unsigned long framesize
;
308 if (machine_is_realview_eb()) {
310 framesize
= 640 * 480 * 2;
311 vga_panel_name
= "VGA";
314 framesize
= 1024 * 768 * 2;
315 vga_panel_name
= "XVGA";
318 val
= readl(sys_clcd
) & SYS_CLCD_ID_MASK
;
319 if (val
== SYS_CLCD_ID_SANYO_3_8
)
320 panel_name
= "Sanyo TM38QV67A02A";
321 else if (val
== SYS_CLCD_ID_SANYO_2_5
)
322 panel_name
= "Sanyo QVGA Portrait";
323 else if (val
== SYS_CLCD_ID_EPSON_2_2
)
324 panel_name
= "Epson L2F50113T00";
325 else if (val
== SYS_CLCD_ID_VGA
)
326 panel_name
= vga_panel_name
;
328 pr_err("CLCD: unknown LCD panel ID 0x%08x, using VGA\n", val
);
329 panel_name
= vga_panel_name
;
332 fb
->panel
= versatile_clcd_get_panel(panel_name
);
336 return versatile_clcd_setup_dma(fb
, framesize
);
339 struct clcd_board clcd_plat_data
= {
341 .caps
= CLCD_CAP_ALL
,
342 .check
= clcdfb_check
,
343 .decode
= clcdfb_decode
,
344 .disable
= realview_clcd_disable
,
345 .enable
= realview_clcd_enable
,
346 .setup
= realview_clcd_setup
,
347 .mmap
= versatile_clcd_mmap_dma
,
348 .remove
= versatile_clcd_remove_dma
,
352 * Where is the timer (VA)?
354 void __iomem
*timer0_va_base
;
355 void __iomem
*timer1_va_base
;
356 void __iomem
*timer2_va_base
;
357 void __iomem
*timer3_va_base
;
360 * Set up the clock source and clock events devices
362 void __init
realview_timer_init(unsigned int timer_irq
)
367 * set clock frequency:
368 * REALVIEW_REFCLK is 32KHz
369 * REALVIEW_TIMCLK is 1MHz
371 val
= readl(__io_address(REALVIEW_SCTL_BASE
));
372 writel((REALVIEW_TIMCLK
<< REALVIEW_TIMER1_EnSel
) |
373 (REALVIEW_TIMCLK
<< REALVIEW_TIMER2_EnSel
) |
374 (REALVIEW_TIMCLK
<< REALVIEW_TIMER3_EnSel
) |
375 (REALVIEW_TIMCLK
<< REALVIEW_TIMER4_EnSel
) | val
,
376 __io_address(REALVIEW_SCTL_BASE
));
379 * Initialise to a known state (all timers off)
381 sp804_timer_disable(timer0_va_base
);
382 sp804_timer_disable(timer1_va_base
);
383 sp804_timer_disable(timer2_va_base
);
384 sp804_timer_disable(timer3_va_base
);
386 sp804_clocksource_init(timer3_va_base
, "timer3");
387 sp804_clockevents_init(timer0_va_base
, timer_irq
, "timer0");
391 * Setup the memory banks.
393 void realview_fixup(struct tag
*tags
, char **from
)
396 * Most RealView platforms have 512MB contiguous RAM at 0x70000000.
397 * Half of this is mirrored at 0.
399 #ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
400 memblock_add(0x70000000, SZ_512M
);
402 memblock_add(0, SZ_256M
);