2 * Atheros AR71xx SoC platform devices
4 * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
7 * Parts of this file are based on Atheros' 2.6.15 BSP
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License version 2 as published
11 * by the Free Software Foundation.
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/delay.h>
17 #include <linux/dma-mapping.h>
18 #include <linux/etherdevice.h>
19 #include <linux/platform_device.h>
20 #include <linux/serial_8250.h>
21 #include <linux/ath9k_platform.h>
23 #include <asm/mach-ar71xx/ar71xx.h>
27 static u8 ar71xx_mac_base
[ETH_ALEN
] __initdata
;
30 * OHCI (USB full speed host controller)
32 static struct resource ar71xx_ohci_resources
[] = {
34 .start
= AR71XX_OHCI_BASE
,
35 .end
= AR71XX_OHCI_BASE
+ AR71XX_OHCI_SIZE
- 1,
36 .flags
= IORESOURCE_MEM
,
39 .start
= AR71XX_MISC_IRQ_OHCI
,
40 .end
= AR71XX_MISC_IRQ_OHCI
,
41 .flags
= IORESOURCE_IRQ
,
45 static u64 ar71xx_ohci_dmamask
= DMA_BIT_MASK(32);
46 static struct platform_device ar71xx_ohci_device
= {
47 .name
= "ar71xx-ohci",
49 .resource
= ar71xx_ohci_resources
,
50 .num_resources
= ARRAY_SIZE(ar71xx_ohci_resources
),
52 .dma_mask
= &ar71xx_ohci_dmamask
,
53 .coherent_dma_mask
= DMA_BIT_MASK(32),
58 * EHCI (USB full speed host controller)
60 static struct resource ar71xx_ehci_resources
[] = {
62 .start
= AR71XX_EHCI_BASE
,
63 .end
= AR71XX_EHCI_BASE
+ AR71XX_EHCI_SIZE
- 1,
64 .flags
= IORESOURCE_MEM
,
67 .start
= AR71XX_CPU_IRQ_USB
,
68 .end
= AR71XX_CPU_IRQ_USB
,
69 .flags
= IORESOURCE_IRQ
,
74 static u64 ar71xx_ehci_dmamask
= DMA_BIT_MASK(32);
75 static struct ar71xx_ehci_platform_data ar71xx_ehci_data
;
77 static struct platform_device ar71xx_ehci_device
= {
78 .name
= "ar71xx-ehci",
80 .resource
= ar71xx_ehci_resources
,
81 .num_resources
= ARRAY_SIZE(ar71xx_ehci_resources
),
83 .dma_mask
= &ar71xx_ehci_dmamask
,
84 .coherent_dma_mask
= DMA_BIT_MASK(32),
85 .platform_data
= &ar71xx_ehci_data
,
89 #define AR71XX_USB_RESET_MASK \
90 (RESET_MODULE_USB_HOST | RESET_MODULE_USB_PHY \
91 | RESET_MODULE_USB_OHCI_DLL)
93 static void ar71xx_usb_setup(void)
95 ar71xx_device_stop(AR71XX_USB_RESET_MASK
);
97 ar71xx_device_start(AR71XX_USB_RESET_MASK
);
99 /* Turning on the Buff and Desc swap bits */
100 ar71xx_usb_ctrl_wr(USB_CTRL_REG_CONFIG
, 0xf0000);
102 /* WAR for HW bug. Here it adjusts the duration between two SOFS */
103 ar71xx_usb_ctrl_wr(USB_CTRL_REG_FLADJ
, 0x20c00);
108 static void ar91xx_usb_setup(void)
110 ar71xx_device_stop(RESET_MODULE_USBSUS_OVERRIDE
);
113 ar71xx_device_start(RESET_MODULE_USB_HOST
);
116 ar71xx_device_start(RESET_MODULE_USB_PHY
);
120 void __init
ar71xx_add_device_usb(void)
122 switch (ar71xx_soc
) {
123 case AR71XX_SOC_AR7130
:
124 case AR71XX_SOC_AR7141
:
125 case AR71XX_SOC_AR7161
:
127 platform_device_register(&ar71xx_ohci_device
);
128 platform_device_register(&ar71xx_ehci_device
);
131 case AR71XX_SOC_AR9130
:
132 case AR71XX_SOC_AR9132
:
134 ar71xx_ehci_data
.is_ar91xx
= 1;
135 platform_device_register(&ar71xx_ehci_device
);
143 static struct resource ar71xx_uart_resources
[] = {
145 .start
= AR71XX_UART_BASE
,
146 .end
= AR71XX_UART_BASE
+ AR71XX_UART_SIZE
- 1,
147 .flags
= IORESOURCE_MEM
,
151 #define AR71XX_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
152 static struct plat_serial8250_port ar71xx_uart_data
[] = {
154 .mapbase
= AR71XX_UART_BASE
,
155 .irq
= AR71XX_MISC_IRQ_UART
,
156 .flags
= AR71XX_UART_FLAGS
,
157 .iotype
= UPIO_MEM32
,
160 /* terminating entry */
164 static struct platform_device ar71xx_uart_device
= {
165 .name
= "serial8250",
166 .id
= PLAT8250_DEV_PLATFORM
,
167 .resource
= ar71xx_uart_resources
,
168 .num_resources
= ARRAY_SIZE(ar71xx_uart_resources
),
170 .platform_data
= ar71xx_uart_data
174 void __init
ar71xx_add_device_uart(void)
176 ar71xx_uart_data
[0].uartclk
= ar71xx_ahb_freq
;
177 platform_device_register(&ar71xx_uart_device
);
180 static struct resource ar71xx_mdio_resources
[] = {
183 .flags
= IORESOURCE_MEM
,
184 .start
= AR71XX_GE0_BASE
+ 0x20,
185 .end
= AR71XX_GE0_BASE
+ 0x38 - 1,
189 static struct ag71xx_mdio_platform_data ar71xx_mdio_data
= {
190 .phy_mask
= 0xffffffff,
193 static struct platform_device ar71xx_mdio_device
= {
194 .name
= "ag71xx-mdio",
196 .resource
= ar71xx_mdio_resources
,
197 .num_resources
= ARRAY_SIZE(ar71xx_mdio_resources
),
199 .platform_data
= &ar71xx_mdio_data
,
203 void __init
ar71xx_add_device_mdio(u32 phy_mask
)
205 ar71xx_mdio_data
.phy_mask
= phy_mask
;
206 platform_device_register(&ar71xx_mdio_device
);
209 static void ar71xx_set_pll(u32 cfg_reg
, u32 pll_reg
, u32 pll_val
, u32 shift
)
214 base
= ioremap_nocache(AR71XX_PLL_BASE
, AR71XX_PLL_SIZE
);
216 t
= __raw_readl(base
+ cfg_reg
);
219 __raw_writel(t
, base
+ cfg_reg
);
222 __raw_writel(pll_val
, base
+ pll_reg
);
225 __raw_writel(t
, base
+ cfg_reg
);
229 __raw_writel(t
, base
+ cfg_reg
);
232 printk(KERN_DEBUG
"ar71xx: pll_reg %#x: %#x\n",
233 (unsigned int)(base
+ pll_reg
), __raw_readl(base
+ pll_reg
));
238 struct ar71xx_eth_pll_data ar71xx_eth0_pll_data
;
239 struct ar71xx_eth_pll_data ar71xx_eth1_pll_data
;
241 static u32
ar71xx_get_eth_pll(unsigned int mac
, int speed
)
243 struct ar71xx_eth_pll_data
*pll_data
;
248 pll_data
= &ar71xx_eth0_pll_data
;
251 pll_data
= &ar71xx_eth1_pll_data
;
259 pll_val
= pll_data
->pll_10
;
262 pll_val
= pll_data
->pll_100
;
265 pll_val
= pll_data
->pll_1000
;
274 static void ar71xx_set_pll_ge0(int speed
)
276 u32 val
= ar71xx_get_eth_pll(0, speed
);
278 ar71xx_set_pll(AR71XX_PLL_REG_SEC_CONFIG
, AR71XX_PLL_REG_ETH0_INT_CLOCK
,
279 val
, AR71XX_ETH0_PLL_SHIFT
);
282 static void ar71xx_set_pll_ge1(int speed
)
284 u32 val
= ar71xx_get_eth_pll(1, speed
);
286 ar71xx_set_pll(AR71XX_PLL_REG_SEC_CONFIG
, AR71XX_PLL_REG_ETH1_INT_CLOCK
,
287 val
, AR71XX_ETH1_PLL_SHIFT
);
290 static void ar724x_set_pll_ge0(int speed
)
295 static void ar724x_set_pll_ge1(int speed
)
300 static void ar91xx_set_pll_ge0(int speed
)
302 u32 val
= ar71xx_get_eth_pll(0, speed
);
304 ar71xx_set_pll(AR91XX_PLL_REG_ETH_CONFIG
, AR91XX_PLL_REG_ETH0_INT_CLOCK
,
305 val
, AR91XX_ETH0_PLL_SHIFT
);
308 static void ar91xx_set_pll_ge1(int speed
)
310 u32 val
= ar71xx_get_eth_pll(1, speed
);
312 ar71xx_set_pll(AR91XX_PLL_REG_ETH_CONFIG
, AR91XX_PLL_REG_ETH1_INT_CLOCK
,
313 val
, AR91XX_ETH1_PLL_SHIFT
);
316 static void ar71xx_ddr_flush_ge0(void)
318 ar71xx_ddr_flush(AR71XX_DDR_REG_FLUSH_GE0
);
321 static void ar71xx_ddr_flush_ge1(void)
323 ar71xx_ddr_flush(AR71XX_DDR_REG_FLUSH_GE1
);
326 static void ar724x_ddr_flush_ge0(void)
328 ar71xx_ddr_flush(AR724X_DDR_REG_FLUSH_GE0
);
331 static void ar724x_ddr_flush_ge1(void)
333 ar71xx_ddr_flush(AR724X_DDR_REG_FLUSH_GE1
);
336 static void ar91xx_ddr_flush_ge0(void)
338 ar71xx_ddr_flush(AR91XX_DDR_REG_FLUSH_GE0
);
341 static void ar91xx_ddr_flush_ge1(void)
343 ar71xx_ddr_flush(AR91XX_DDR_REG_FLUSH_GE1
);
346 static struct resource ar71xx_eth0_resources
[] = {
349 .flags
= IORESOURCE_MEM
,
350 .start
= AR71XX_GE0_BASE
,
351 .end
= AR71XX_GE0_BASE
+ 0x20 - 1,
354 .flags
= IORESOURCE_MEM
,
355 .start
= AR71XX_GE0_BASE
+ 0x38,
356 .end
= AR71XX_GE0_BASE
+ 0x200 - 1,
359 .flags
= IORESOURCE_MEM
,
360 .start
= AR71XX_MII_BASE
+ MII_REG_MII0_CTRL
,
361 .end
= AR71XX_MII_BASE
+ MII_REG_MII0_CTRL
+ 3,
364 .flags
= IORESOURCE_IRQ
,
365 .start
= AR71XX_CPU_IRQ_GE0
,
366 .end
= AR71XX_CPU_IRQ_GE0
,
370 struct ag71xx_platform_data ar71xx_eth0_data
= {
371 .reset_bit
= RESET_MODULE_GE0_MAC
,
374 static struct platform_device ar71xx_eth0_device
= {
377 .resource
= ar71xx_eth0_resources
,
378 .num_resources
= ARRAY_SIZE(ar71xx_eth0_resources
),
380 .platform_data
= &ar71xx_eth0_data
,
384 static struct resource ar71xx_eth1_resources
[] = {
387 .flags
= IORESOURCE_MEM
,
388 .start
= AR71XX_GE1_BASE
,
389 .end
= AR71XX_GE1_BASE
+ 0x20 - 1,
392 .flags
= IORESOURCE_MEM
,
393 .start
= AR71XX_GE1_BASE
+ 0x38,
394 .end
= AR71XX_GE1_BASE
+ 0x200 - 1,
397 .flags
= IORESOURCE_MEM
,
398 .start
= AR71XX_MII_BASE
+ MII_REG_MII1_CTRL
,
399 .end
= AR71XX_MII_BASE
+ MII_REG_MII1_CTRL
+ 3,
402 .flags
= IORESOURCE_IRQ
,
403 .start
= AR71XX_CPU_IRQ_GE1
,
404 .end
= AR71XX_CPU_IRQ_GE1
,
408 struct ag71xx_platform_data ar71xx_eth1_data
= {
409 .reset_bit
= RESET_MODULE_GE1_MAC
,
412 static struct platform_device ar71xx_eth1_device
= {
415 .resource
= ar71xx_eth1_resources
,
416 .num_resources
= ARRAY_SIZE(ar71xx_eth1_resources
),
418 .platform_data
= &ar71xx_eth1_data
,
422 #define AR71XX_PLL_VAL_1000 0x00110000
423 #define AR71XX_PLL_VAL_100 0x00001099
424 #define AR71XX_PLL_VAL_10 0x00991099
426 #define AR724X_PLL_VAL_1000 0x00110000
427 #define AR724X_PLL_VAL_100 0x00001099
428 #define AR724X_PLL_VAL_10 0x00991099
430 #define AR91XX_PLL_VAL_1000 0x1a000000
431 #define AR91XX_PLL_VAL_100 0x13000a44
432 #define AR91XX_PLL_VAL_10 0x00441099
434 static void __init
ar71xx_init_eth_pll_data(unsigned int id
)
436 struct ar71xx_eth_pll_data
*pll_data
;
437 u32 pll_10
, pll_100
, pll_1000
;
441 pll_data
= &ar71xx_eth0_pll_data
;
444 pll_data
= &ar71xx_eth1_pll_data
;
450 switch (ar71xx_soc
) {
451 case AR71XX_SOC_AR7130
:
452 case AR71XX_SOC_AR7141
:
453 case AR71XX_SOC_AR7161
:
454 pll_10
= AR71XX_PLL_VAL_10
;
455 pll_100
= AR71XX_PLL_VAL_100
;
456 pll_1000
= AR71XX_PLL_VAL_1000
;
459 case AR71XX_SOC_AR7240
:
460 pll_10
= AR724X_PLL_VAL_10
;
461 pll_100
= AR724X_PLL_VAL_100
;
462 pll_1000
= AR724X_PLL_VAL_1000
;
465 case AR71XX_SOC_AR9130
:
466 case AR71XX_SOC_AR9132
:
467 pll_10
= AR91XX_PLL_VAL_10
;
468 pll_100
= AR91XX_PLL_VAL_100
;
469 pll_1000
= AR91XX_PLL_VAL_1000
;
475 if (!pll_data
->pll_10
)
476 pll_data
->pll_10
= pll_10
;
478 if (!pll_data
->pll_100
)
479 pll_data
->pll_100
= pll_100
;
481 if (!pll_data
->pll_1000
)
482 pll_data
->pll_1000
= pll_1000
;
485 static int ar71xx_eth_instance __initdata
;
486 void __init
ar71xx_add_device_eth(unsigned int id
)
488 struct platform_device
*pdev
;
489 struct ag71xx_platform_data
*pdata
;
491 ar71xx_init_eth_pll_data(id
);
495 switch (ar71xx_eth0_data
.phy_if_mode
) {
496 case PHY_INTERFACE_MODE_MII
:
497 ar71xx_eth0_data
.mii_if
= MII0_CTRL_IF_MII
;
499 case PHY_INTERFACE_MODE_GMII
:
500 ar71xx_eth0_data
.mii_if
= MII0_CTRL_IF_GMII
;
502 case PHY_INTERFACE_MODE_RGMII
:
503 ar71xx_eth0_data
.mii_if
= MII0_CTRL_IF_RGMII
;
505 case PHY_INTERFACE_MODE_RMII
:
506 ar71xx_eth0_data
.mii_if
= MII0_CTRL_IF_RMII
;
509 printk(KERN_ERR
"ar71xx: invalid PHY interface mode "
513 pdev
= &ar71xx_eth0_device
;
516 switch (ar71xx_eth1_data
.phy_if_mode
) {
517 case PHY_INTERFACE_MODE_RMII
:
518 ar71xx_eth1_data
.mii_if
= MII1_CTRL_IF_RMII
;
520 case PHY_INTERFACE_MODE_RGMII
:
521 ar71xx_eth1_data
.mii_if
= MII1_CTRL_IF_RGMII
;
524 printk(KERN_ERR
"ar71xx: invalid PHY interface mode "
528 pdev
= &ar71xx_eth1_device
;
531 printk(KERN_ERR
"ar71xx: invalid ethernet id %d\n", id
);
535 pdata
= pdev
->dev
.platform_data
;
537 switch (ar71xx_soc
) {
538 case AR71XX_SOC_AR7130
:
539 pdata
->ddr_flush
= id
? ar71xx_ddr_flush_ge1
540 : ar71xx_ddr_flush_ge0
;
541 pdata
->set_pll
= id
? ar71xx_set_pll_ge1
542 : ar71xx_set_pll_ge0
;
545 case AR71XX_SOC_AR7141
:
546 case AR71XX_SOC_AR7161
:
547 pdata
->ddr_flush
= id
? ar71xx_ddr_flush_ge1
548 : ar71xx_ddr_flush_ge0
;
549 pdata
->set_pll
= id
? ar71xx_set_pll_ge1
550 : ar71xx_set_pll_ge0
;
554 case AR71XX_SOC_AR7240
:
555 pdata
->ddr_flush
= id
? ar724x_ddr_flush_ge1
556 : ar724x_ddr_flush_ge0
;
557 pdata
->set_pll
= id
? ar724x_set_pll_ge1
558 : ar724x_set_pll_ge0
;
559 pdata
->is_ar724x
= 1;
562 case AR71XX_SOC_AR9130
:
563 pdata
->ddr_flush
= id
? ar91xx_ddr_flush_ge1
564 : ar91xx_ddr_flush_ge0
;
565 pdata
->set_pll
= id
? ar91xx_set_pll_ge1
566 : ar91xx_set_pll_ge0
;
567 pdata
->is_ar91xx
= 1;
570 case AR71XX_SOC_AR9132
:
571 pdata
->ddr_flush
= id
? ar91xx_ddr_flush_ge1
572 : ar91xx_ddr_flush_ge0
;
573 pdata
->set_pll
= id
? ar91xx_set_pll_ge1
574 : ar91xx_set_pll_ge0
;
575 pdata
->is_ar91xx
= 1;
583 switch (pdata
->phy_if_mode
) {
584 case PHY_INTERFACE_MODE_GMII
:
585 case PHY_INTERFACE_MODE_RGMII
:
586 if (!pdata
->has_gbit
) {
587 printk(KERN_ERR
"ar71xx: no gbit available on eth%d\n",
596 if (is_valid_ether_addr(ar71xx_mac_base
)) {
597 memcpy(pdata
->mac_addr
, ar71xx_mac_base
, ETH_ALEN
);
598 pdata
->mac_addr
[5] += ar71xx_eth_instance
;
600 random_ether_addr(pdata
->mac_addr
);
602 "ar71xx: using random MAC address for eth%d\n",
603 ar71xx_eth_instance
);
606 platform_device_register(pdev
);
607 ar71xx_eth_instance
++;
610 static struct resource ar71xx_spi_resources
[] = {
612 .start
= AR71XX_SPI_BASE
,
613 .end
= AR71XX_SPI_BASE
+ AR71XX_SPI_SIZE
- 1,
614 .flags
= IORESOURCE_MEM
,
618 static struct platform_device ar71xx_spi_device
= {
619 .name
= "ar71xx-spi",
621 .resource
= ar71xx_spi_resources
,
622 .num_resources
= ARRAY_SIZE(ar71xx_spi_resources
),
625 void __init
ar71xx_add_device_spi(struct ar71xx_spi_platform_data
*pdata
,
626 struct spi_board_info
const *info
,
629 spi_register_board_info(info
, n
);
630 ar71xx_spi_device
.dev
.platform_data
= pdata
;
631 platform_device_register(&ar71xx_spi_device
);
634 void __init
ar71xx_add_device_leds_gpio(int id
, unsigned num_leds
,
635 struct gpio_led
*leds
)
637 struct platform_device
*pdev
;
638 struct gpio_led_platform_data pdata
;
642 p
= kmalloc(num_leds
* sizeof(*p
), GFP_KERNEL
);
646 memcpy(p
, leds
, num_leds
* sizeof(*p
));
648 pdev
= platform_device_alloc("leds-gpio", id
);
652 memset(&pdata
, 0, sizeof(pdata
));
653 pdata
.num_leds
= num_leds
;
656 err
= platform_device_add_data(pdev
, &pdata
, sizeof(pdata
));
660 err
= platform_device_add(pdev
);
667 platform_device_put(pdev
);
673 void __init
ar71xx_add_device_gpio_buttons(int id
,
674 unsigned poll_interval
,
676 struct gpio_button
*buttons
)
678 struct platform_device
*pdev
;
679 struct gpio_buttons_platform_data pdata
;
680 struct gpio_button
*p
;
683 p
= kmalloc(nbuttons
* sizeof(*p
), GFP_KERNEL
);
687 memcpy(p
, buttons
, nbuttons
* sizeof(*p
));
689 pdev
= platform_device_alloc("gpio-buttons", id
);
691 goto err_free_buttons
;
693 memset(&pdata
, 0, sizeof(pdata
));
694 pdata
.poll_interval
= poll_interval
;
695 pdata
.nbuttons
= nbuttons
;
698 err
= platform_device_add_data(pdev
, &pdata
, sizeof(pdata
));
703 err
= platform_device_add(pdev
);
710 platform_device_put(pdev
);
716 void __init
ar71xx_add_device_wdt(void)
718 platform_device_register_simple("ar71xx-wdt", -1, NULL
, 0);
721 void __init
ar71xx_set_mac_base(unsigned char *mac
)
723 memcpy(ar71xx_mac_base
, mac
, ETH_ALEN
);
726 void __init
ar71xx_parse_mac_addr(char *mac_str
)
731 t
= sscanf(mac_str
, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
732 &tmp
[0], &tmp
[1], &tmp
[2], &tmp
[3], &tmp
[4], &tmp
[5]);
735 t
= sscanf(mac_str
, "%02hhx.%02hhx.%02hhx.%02hhx.%02hhx.%02hhx",
736 &tmp
[0], &tmp
[1], &tmp
[2], &tmp
[3], &tmp
[4], &tmp
[5]);
739 ar71xx_set_mac_base(tmp
);
741 printk(KERN_DEBUG
"ar71xx: failed to parse mac address "
742 "\"%s\"\n", mac_str
);
745 static struct resource ar91xx_wmac_resources
[] = {
747 .start
= AR91XX_WMAC_BASE
,
748 .end
= AR91XX_WMAC_BASE
+ AR91XX_WMAC_SIZE
- 1,
749 .flags
= IORESOURCE_MEM
,
751 .start
= AR71XX_CPU_IRQ_WMAC
,
752 .end
= AR71XX_CPU_IRQ_WMAC
,
753 .flags
= IORESOURCE_IRQ
,
757 static struct ath9k_platform_data ar91xx_wmac_data
;
759 static struct platform_device ar91xx_wmac_device
= {
762 .resource
= ar91xx_wmac_resources
,
763 .num_resources
= ARRAY_SIZE(ar91xx_wmac_resources
),
765 .platform_data
= &ar91xx_wmac_data
,
769 void __init
ar91xx_add_device_wmac(void)
771 u8
*ee
= (u8
*) KSEG1ADDR(0x1fff1000);
773 memcpy(ar91xx_wmac_data
.eeprom_data
, ee
,
774 sizeof(ar91xx_wmac_data
.eeprom_data
));
776 ar71xx_device_stop(RESET_MODULE_AMBA2WMAC
);
779 ar71xx_device_start(RESET_MODULE_AMBA2WMAC
);
782 platform_device_register(&ar91xx_wmac_device
);
785 static struct platform_device ar71xx_dsa_switch_device
= {
790 void __init
ar71xx_add_device_dsa(unsigned int id
,
791 struct dsa_platform_data
*d
)
795 d
->netdev
= &ar71xx_eth0_device
.dev
;
798 d
->netdev
= &ar71xx_eth1_device
.dev
;
802 "ar71xx: invalid ethernet id %d for DSA switch\n",
806 d
->mii_bus
= &ar71xx_mdio_device
.dev
;
807 ar71xx_dsa_switch_device
.dev
.platform_data
= d
;
809 platform_device_register(&ar71xx_dsa_switch_device
);