1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * arch/arm/mach-ep93xx/core.c
19 #include <linux/dma-mapping.h>
34 #include <linux/irqchip/arm-vic.h>
40 #include <linux/platform_data/video-ep93xx.h>
41 #include <linux/platform_data/keypad-ep93xx.h>
42 #include <linux/platform_data/spi-ep93xx.h>
45 #include "gpio-ep93xx.h"
124  * ep93xx_chip_revision() - returns the EP93xx chip revision
156 	.name		= "gpio-ep93xx",
157 	.id		= -1,
199 	.name		= "ep93xx-rtc",
200 	.id		= -1,
214 		ep93xx_ohci_host_clock = devm_clk_get(&pdev->dev, NULL);  in ep93xx_ohci_power_on()
241 	.name		= "ohci-platform",
242 	.id		= -1,
262 	.name		= "physmap-flash",
272  * ep93xx_register_flash() - Register the external flash device.
283 	ep93xx_flash_resource.end	= start + size - 1;  in ep93xx_register_flash()
302 	.name		= "ep93xx-eth",
303 	.id		= -1,
314  * ep93xx_register_eth - Register the built-in ethernet platform device.
322 		memcpy_fromio(data->dev_addr, EP93XX_ETHERNET_BASE + 0x50, 6);  in ep93xx_register_eth()
333 /* All EP93xx devices use the same two GPIO pins for I2C bit-banging */
335 	.dev_id		= "i2c-gpio.0",
347 	.name		= "i2c-gpio",
355  * ep93xx_register_i2c - Register the i2c platform device.
362 	 * FIXME: this just sets the two pins as non-opendrain, as no  in ep93xx_register_i2c()
366 	 * be. Right now i2c-gpio emulates open drain which is not  in ep93xx_register_i2c()
390 	.name		= "ep93xx-spi",
402  * ep93xx_register_spi() - registers spi platform device
441 	.dev_id = "leds-gpio",
458 	.name		= "ep93xx-pwm",
469 	.name		= "ep93xx-pwm",
489 	if (pdev->id == 0) {  in ep93xx_pwm_acquire_gpio()
491 	} else if (pdev->id == 1) {  in ep93xx_pwm_acquire_gpio()
493 				   dev_name(&pdev->dev));  in ep93xx_pwm_acquire_gpio()
503 		err = -ENODEV;  in ep93xx_pwm_acquire_gpio()
516 	if (pdev->id == 1) {  in ep93xx_pwm_release_gpio()
537 	.name			= "ep93xx-fb",
538 	.id			= -1,
557 	.name		= "ep93xx-bl",
558 	.id		= -1,
564  * ep93xx_register_fb - Register the framebuffer platform device.
586 	.name		= "ep93xx-keypad",
587 	.id		= -1,
596  * ep93xx_register_keypad - Register the keypad platform device.
611 		err = gpio_request(EP93XX_GPIO_LINE_C(i), dev_name(&pdev->dev));  in ep93xx_keypad_acquire_gpio()
614 		err = gpio_request(EP93XX_GPIO_LINE_D(i), dev_name(&pdev->dev));  in ep93xx_keypad_acquire_gpio()
628 	for (--i; i >= 0; --i) {  in ep93xx_keypad_acquire_gpio()
660 	.name		= "ep93xx-i2s",
661 	.id		= -1,
667 	.name		= "ep93xx-pcm-audio",
668 	.id		= -1,
720 	.name		= "ep93xx-ac97",
721 	.id		= -1,
745 	.name		= "ep93xx-wdt",
746 	.id		= -1,
760 	.name		= "ep93xx-ide",
761 	.id		= -1,
780 	err = gpio_request(EP93XX_GPIO_LINE_EGPIO2, dev_name(&pdev->dev));  in ep93xx_ide_acquire_gpio()
783 	err = gpio_request(EP93XX_GPIO_LINE_EGPIO15, dev_name(&pdev->dev));  in ep93xx_ide_acquire_gpio()
787 		err = gpio_request(EP93XX_GPIO_LINE_E(i), dev_name(&pdev->dev));  in ep93xx_ide_acquire_gpio()
792 		err = gpio_request(EP93XX_GPIO_LINE_G(i), dev_name(&pdev->dev));  in ep93xx_ide_acquire_gpio()
797 		err = gpio_request(EP93XX_GPIO_LINE_H(i), dev_name(&pdev->dev));  in ep93xx_ide_acquire_gpio()
809 	for (--i; i >= 0; --i)  in ep93xx_ide_acquire_gpio()
813 	for (--i; i >= 4; --i)  in ep93xx_ide_acquire_gpio()
817 	for (--i; i >= 2; --i)  in ep93xx_ide_acquire_gpio()
856 	.name		= "ep93xx-adc",
857 	.id		= -1,
900 	unsigned int id, id2, id3, id4, id5;  in ep93xx_get_soc_id()  local
906 	id2 = __raw_readl(EP93XX_SECURITY_UNIQID2);  in ep93xx_get_soc_id()
911 	if (id != id2)  in ep93xx_get_soc_id()
915 	add_device_randomness(&id2, 4);  in ep93xx_get_soc_id()
921 		 "%08x%08x%08x%08x", id2, id3, id4, id5);  in ep93xx_get_soc_id()
948 	return kasprintf(GFP_KERNEL,"%s", machine_desc->name);  in ep93xx_get_machine_name()
960 	soc_dev_attr->machine = ep93xx_get_machine_name();  in ep93xx_init_soc()
961 	soc_dev_attr->family = "Cirrus Logic EP93xx";  in ep93xx_init_soc()
962 	soc_dev_attr->revision = ep93xx_get_soc_rev();  in ep93xx_init_soc()
963 	soc_dev_attr->soc_id = ep93xx_get_soc_id();  in ep93xx_init_soc()
967 		kfree(soc_dev_attr->machine);  in ep93xx_init_soc()
1003 	gpio_led_register_device(-1, &ep93xx_led_data);  in ep93xx_init_devices()