2 * Ralink RT3662/RT3883 SoC platform device registration
4 * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation.
11 #include <linux/kernel.h>
12 #include <linux/platform_device.h>
13 #include <linux/mtd/mtd.h>
14 #include <linux/mtd/physmap.h>
15 #include <linux/mtd/partitions.h>
16 #include <linux/dma-mapping.h>
17 #include <linux/spi/spi.h>
18 #include <linux/delay.h>
19 #include <linux/err.h>
20 #include <linux/clk.h>
21 #include <linux/rt2x00_platform.h>
22 #include <linux/usb/ehci_pdriver.h>
23 #include <linux/usb/ohci_pdriver.h>
25 #include <asm/addrspace.h>
27 #include <asm/mach-ralink/rt3883.h>
28 #include <asm/mach-ralink/rt3883_regs.h>
29 #include <asm/mach-ralink/ramips_nand_platform.h>
32 #include <ramips_eth_platform.h>
34 static struct resource rt3883_flash0_resources
[] = {
36 .flags
= IORESOURCE_MEM
,
37 .start
= RT3883_BOOT_BASE
,
38 .end
= RT3883_BOOT_BASE
+ RT3883_BOOT_SIZE
- 1,
42 struct physmap_flash_data rt3883_flash0_data
;
43 static struct platform_device rt3883_flash0_device
= {
44 .name
= "physmap-flash",
45 .resource
= rt3883_flash0_resources
,
46 .num_resources
= ARRAY_SIZE(rt3883_flash0_resources
),
48 .platform_data
= &rt3883_flash0_data
,
52 static struct resource rt3883_flash1_resources
[] = {
54 .flags
= IORESOURCE_MEM
,
55 .start
= RT3883_SRAM_BASE
,
56 .end
= RT3883_SRAM_BASE
+ RT3883_SRAM_SIZE
- 1,
60 struct physmap_flash_data rt3883_flash1_data
;
61 static struct platform_device rt3883_flash1_device
= {
62 .name
= "physmap-flash",
63 .resource
= rt3883_flash1_resources
,
64 .num_resources
= ARRAY_SIZE(rt3883_flash1_resources
),
66 .platform_data
= &rt3883_flash1_data
,
70 static int rt3883_flash_instance __initdata
;
71 void __init
rt3883_register_pflash(unsigned int id
)
73 struct platform_device
*pdev
;
74 struct physmap_flash_data
*pdata
;
75 void __iomem
*fscc_base
;
81 pdev
= &rt3883_flash0_device
;
82 reg
= RT3883_FSCC_REG_FLASH_CFG0
;
85 pdev
= &rt3883_flash1_device
;
86 reg
= RT3883_FSCC_REG_FLASH_CFG1
;
92 pdata
= pdev
->dev
.platform_data
;
94 fscc_base
= ioremap(RT3883_FSCC_BASE
, RT3883_FSCC_SIZE
);
96 panic("RT3883: ioremap failed for FSCC");
98 t
= __raw_readl(fscc_base
+ reg
);
101 t
= (t
>> RT3883_FLASH_CFG_WIDTH_SHIFT
) & RT3883_FLASH_CFG_WIDTH_MASK
;
103 case RT3883_FLASH_CFG_WIDTH_8BIT
:
106 case RT3883_FLASH_CFG_WIDTH_16BIT
:
109 case RT3883_FLASH_CFG_WIDTH_32BIT
:
116 pr_warn("RT3883: flash bank%d: invalid width detected\n", id
);
120 pdev
->id
= rt3883_flash_instance
;
122 platform_device_register(pdev
);
123 rt3883_flash_instance
++;
126 static atomic_t rt3883_usb_pwr_ref
= ATOMIC_INIT(0);
128 static int rt3883_usb_power_on(struct platform_device
*pdev
)
131 if (atomic_inc_return(&rt3883_usb_pwr_ref
) == 1) {
134 t
= rt3883_sysc_rr(RT3883_SYSC_REG_USB_PS
);
136 /* enable clock for port0's and port1's phys */
137 t
= rt3883_sysc_rr(RT3883_SYSC_REG_CLKCFG1
);
138 t
|= RT3883_CLKCFG1_UPHY0_CLK_EN
| RT3883_CLKCFG1_UPHY1_CLK_EN
;
139 rt3883_sysc_wr(t
, RT3883_SYSC_REG_CLKCFG1
);
142 /* pull USBHOST and USBDEV out from reset */
143 t
= rt3883_sysc_rr(RT3883_SYSC_REG_RSTCTRL
);
144 t
&= ~(RT3883_RSTCTRL_UHST
| RT3883_RSTCTRL_UDEV
);
145 rt3883_sysc_wr(t
, RT3883_SYSC_REG_RSTCTRL
);
148 /* enable host mode */
149 t
= rt3883_sysc_rr(RT3883_SYSC_REG_SYSCFG1
);
150 t
|= RT3883_SYSCFG1_USB0_HOST_MODE
;
151 rt3883_sysc_wr(t
, RT3883_SYSC_REG_SYSCFG1
);
153 t
= rt3883_sysc_rr(RT3883_SYSC_REG_USB_PS
);
159 static void rt3883_usb_power_off(struct platform_device
*pdev
)
161 if (atomic_dec_return(&rt3883_usb_pwr_ref
) == 0) {
164 /* put USBHOST and USBDEV into reset */
165 t
= rt3883_sysc_rr(RT3883_SYSC_REG_RSTCTRL
);
166 t
|= RT3883_RSTCTRL_UHST
| RT3883_RSTCTRL_UDEV
;
167 rt3883_sysc_wr(t
, RT3883_SYSC_REG_RSTCTRL
);
170 /* disable clock for port0's and port1's phys*/
171 t
= rt3883_sysc_rr(RT3883_SYSC_REG_CLKCFG1
);
172 t
&= ~(RT3883_CLKCFG1_UPHY0_CLK_EN
|
173 RT3883_CLKCFG1_UPHY1_CLK_EN
);
174 rt3883_sysc_wr(t
, RT3883_SYSC_REG_CLKCFG1
);
179 static struct usb_ehci_pdata rt3883_ehci_data
= {
180 .power_on
= rt3883_usb_power_on
,
181 .power_off
= rt3883_usb_power_off
,
184 static struct resource rt3883_ehci_resources
[] = {
186 .start
= RT3883_EHCI_BASE
,
187 .end
= RT3883_EHCI_BASE
+ PAGE_SIZE
- 1,
188 .flags
= IORESOURCE_MEM
,
190 .start
= RT3883_INTC_IRQ_UHST
,
191 .end
= RT3883_INTC_IRQ_UHST
,
192 .flags
= IORESOURCE_IRQ
,
196 static u64 rt3883_ehci_dmamask
= DMA_BIT_MASK(32);
197 static struct platform_device rt3883_ehci_device
= {
198 .name
= "ehci-platform",
200 .resource
= rt3883_ehci_resources
,
201 .num_resources
= ARRAY_SIZE(rt3883_ehci_resources
),
203 .dma_mask
= &rt3883_ehci_dmamask
,
204 .coherent_dma_mask
= DMA_BIT_MASK(32),
205 .platform_data
= &rt3883_ehci_data
,
209 static struct resource rt3883_ohci_resources
[] = {
211 .start
= RT3883_OHCI_BASE
,
212 .end
= RT3883_OHCI_BASE
+ PAGE_SIZE
- 1,
213 .flags
= IORESOURCE_MEM
,
215 .start
= RT3883_INTC_IRQ_UHST
,
216 .end
= RT3883_INTC_IRQ_UHST
,
217 .flags
= IORESOURCE_IRQ
,
221 static struct usb_ohci_pdata rt3883_ohci_data
= {
222 .power_on
= rt3883_usb_power_on
,
223 .power_off
= rt3883_usb_power_off
,
226 static u64 rt3883_ohci_dmamask
= DMA_BIT_MASK(32);
227 static struct platform_device rt3883_ohci_device
= {
228 .name
= "ohci-platform",
230 .resource
= rt3883_ohci_resources
,
231 .num_resources
= ARRAY_SIZE(rt3883_ohci_resources
),
233 .dma_mask
= &rt3883_ohci_dmamask
,
234 .coherent_dma_mask
= DMA_BIT_MASK(32),
235 .platform_data
= &rt3883_ohci_data
,
239 void __init
rt3883_register_usbhost(void)
241 platform_device_register(&rt3883_ehci_device
);
242 platform_device_register(&rt3883_ohci_device
);
245 static void rt3883_fe_reset(void)
249 t
= rt3883_sysc_rr(RT3883_SYSC_REG_RSTCTRL
);
250 t
|= RT3883_RSTCTRL_FE
;
251 rt3883_sysc_wr(t
, RT3883_SYSC_REG_RSTCTRL
);
253 t
&= ~RT3883_RSTCTRL_FE
;
254 rt3883_sysc_wr(t
, RT3883_SYSC_REG_RSTCTRL
);
257 static struct resource rt3883_eth_resources
[] = {
259 .start
= RT3883_FE_BASE
,
260 .end
= RT3883_FE_BASE
+ PAGE_SIZE
- 1,
261 .flags
= IORESOURCE_MEM
,
263 .start
= RT3883_CPU_IRQ_FE
,
264 .end
= RT3883_CPU_IRQ_FE
,
265 .flags
= IORESOURCE_IRQ
,
269 struct ramips_eth_platform_data rt3883_eth_data
= {
270 .mac
= { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
271 .reset_fe
= rt3883_fe_reset
,
275 static struct platform_device rt3883_eth_device
= {
276 .name
= "ramips_eth",
277 .resource
= rt3883_eth_resources
,
278 .num_resources
= ARRAY_SIZE(rt3883_eth_resources
),
280 .platform_data
= &rt3883_eth_data
,
284 void __init
rt3883_register_ethernet(void)
288 clk
= clk_get(NULL
, "sys");
290 panic("unable to get SYS clock, err=%ld", PTR_ERR(clk
));
292 rt3883_eth_data
.sys_freq
= clk_get_rate(clk
);
294 platform_device_register(&rt3883_eth_device
);
297 static struct resource rt3883_wlan_resources
[] = {
299 .start
= RT3883_WLAN_BASE
,
300 .end
= RT3883_WLAN_BASE
+ 0x3FFFF,
301 .flags
= IORESOURCE_MEM
,
303 .start
= RT3883_CPU_IRQ_WLAN
,
304 .end
= RT3883_CPU_IRQ_WLAN
,
305 .flags
= IORESOURCE_IRQ
,
309 struct rt2x00_platform_data rt3883_wlan_data
;
310 static struct platform_device rt3883_wlan_device
= {
311 .name
= "rt2800_wmac",
312 .resource
= rt3883_wlan_resources
,
313 .num_resources
= ARRAY_SIZE(rt3883_wlan_resources
),
315 .platform_data
= &rt3883_wlan_data
,
319 void __init
rt3883_register_wlan(void)
321 rt3883_wlan_data
.eeprom_file_name
= "soc_wmac.eeprom",
322 platform_device_register(&rt3883_wlan_device
);
325 static struct resource rt3883_wdt_resources
[] = {
327 .start
= RT3883_TIMER_BASE
,
328 .end
= RT3883_TIMER_BASE
+ RT3883_TIMER_SIZE
- 1,
329 .flags
= IORESOURCE_MEM
,
333 static struct platform_device rt3883_wdt_device
= {
334 .name
= "ramips-wdt",
336 .resource
= rt3883_wdt_resources
,
337 .num_resources
= ARRAY_SIZE(rt3883_wdt_resources
),
340 void __init
rt3883_register_wdt(bool enable_reset
)
345 /* enable WDT reset output on GPIO 2 */
346 t
= rt3883_sysc_rr(RT3883_SYSC_REG_SYSCFG1
);
347 t
|= RT3883_SYSCFG1_GPIO2_AS_WDT_OUT
;
348 rt3883_sysc_wr(t
, RT3883_SYSC_REG_SYSCFG1
);
351 platform_device_register(&rt3883_wdt_device
);
354 static struct resource rt3883_nand_resources
[] = {
356 .flags
= IORESOURCE_MEM
,
357 .start
= RT3883_NANDC_BASE
,
358 .end
= RT3883_NANDC_BASE
+ RT3883_NANDC_SIZE
- 1,
362 struct ramips_nand_platform_data rt3883_nand_data
;
363 static struct platform_device rt3883_nand_device
= {
364 .name
= RAMIPS_NAND_DRIVER_NAME
,
366 .resource
= rt3883_nand_resources
,
367 .num_resources
= ARRAY_SIZE(rt3883_nand_resources
),
369 .platform_data
= &rt3883_nand_data
,
373 void __init
rt3883_register_nand(void)
375 platform_device_register(&rt3883_nand_device
);
378 static struct resource rt3883_spi_resources
[] = {
380 .flags
= IORESOURCE_MEM
,
381 .start
= RT3883_SPI_BASE
,
382 .end
= RT3883_SPI_BASE
+ RT3883_SPI_SIZE
- 1,
386 static struct platform_device rt3883_spi_device
= {
387 .name
= "ramips-spi",
389 .resource
= rt3883_spi_resources
,
390 .num_resources
= ARRAY_SIZE(rt3883_spi_resources
),
393 void __init
rt3883_register_spi(struct spi_board_info
*info
, int n
)
395 spi_register_board_info(info
, n
);
396 platform_device_register(&rt3883_spi_device
);