arch/arm/mach-nomadik/cpu-8815.c - kernel/msm-4.9 - Gitiles

 /*
  * Copyright STMicroelectronics, 2007.
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation; either version 2 of the License, or
  *  (at your option) any later version.
  *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */

 #include <linux/types.h>
 #include <linux/init.h>
 #include <linux/device.h>
 #include <linux/amba/bus.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/slab.h>
 #include <linux/irq.h>
 #include <linux/dma-mapping.h>
 #include <linux/of_irq.h>
 #include <linux/of_gpio.h>
 #include <linux/of_address.h>
 #include <linux/of_platform.h>
 #include <linux/gpio.h>

 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 #include <asm/mach/time.h>
 #include <asm/mach-types.h>

 #include <asm/cacheflush.h>
 #include <asm/hardware/cache-l2x0.h>

 /*
  * These are the only hard-coded address offsets we still have to use.
  */
 #define NOMADIK_FSMC_BASE	0x10100000	/* FSMC registers */
 #define NOMADIK_SDRAMC_BASE	0x10110000	/* SDRAM Controller */
 #define NOMADIK_CLCDC_BASE	0x10120000	/* CLCD Controller */
 #define NOMADIK_MDIF_BASE	0x10120000	/* MDIF */
 #define NOMADIK_DMA0_BASE	0x10130000	/* DMA0 Controller */
 #define NOMADIK_IC_BASE		0x10140000	/* Vectored Irq Controller */
 #define NOMADIK_DMA1_BASE	0x10150000	/* DMA1 Controller */
 #define NOMADIK_USB_BASE	0x10170000	/* USB-OTG conf reg base */
 #define NOMADIK_CRYP_BASE	0x10180000	/* Crypto processor */
 #define NOMADIK_SHA1_BASE	0x10190000	/* SHA-1 Processor */
 #define NOMADIK_XTI_BASE	0x101A0000	/* XTI */
 #define NOMADIK_RNG_BASE	0x101B0000	/* Random number generator */
 #define NOMADIK_SRC_BASE	0x101E0000	/* SRC base */
 #define NOMADIK_WDOG_BASE	0x101E1000	/* Watchdog */
 #define NOMADIK_MTU0_BASE	0x101E2000	/* Multiple Timer 0 */
 #define NOMADIK_MTU1_BASE	0x101E3000	/* Multiple Timer 1 */
 #define NOMADIK_GPIO0_BASE	0x101E4000	/* GPIO0 */
 #define NOMADIK_GPIO1_BASE	0x101E5000	/* GPIO1 */
 #define NOMADIK_GPIO2_BASE	0x101E6000	/* GPIO2 */
 #define NOMADIK_GPIO3_BASE	0x101E7000	/* GPIO3 */
 #define NOMADIK_RTC_BASE	0x101E8000	/* Real Time Clock base */
 #define NOMADIK_PMU_BASE	0x101E9000	/* Power Management Unit */
 #define NOMADIK_OWM_BASE	0x101EA000	/* One wire master */
 #define NOMADIK_SCR_BASE	0x101EF000	/* Secure Control registers */
 #define NOMADIK_MSP2_BASE	0x101F0000	/* MSP 2 interface */
 #define NOMADIK_MSP1_BASE	0x101F1000	/* MSP 1 interface */
 #define NOMADIK_UART2_BASE	0x101F2000	/* UART 2 interface */
 #define NOMADIK_SSIRx_BASE	0x101F3000	/* SSI 8-ch rx interface */
 #define NOMADIK_SSITx_BASE	0x101F4000	/* SSI 8-ch tx interface */
 #define NOMADIK_MSHC_BASE	0x101F5000	/* Memory Stick(Pro) Host */
 #define NOMADIK_SDI_BASE	0x101F6000	/* SD-card/MM-Card */
 #define NOMADIK_I2C1_BASE	0x101F7000	/* I2C1 interface */
 #define NOMADIK_I2C0_BASE	0x101F8000	/* I2C0 interface */
 #define NOMADIK_MSP0_BASE	0x101F9000	/* MSP 0 interface */
 #define NOMADIK_FIRDA_BASE	0x101FA000	/* FIrDA interface */
 #define NOMADIK_UART1_BASE	0x101FB000	/* UART 1 interface */
 #define NOMADIK_SSP_BASE	0x101FC000	/* SSP interface */
 #define NOMADIK_UART0_BASE	0x101FD000	/* UART 0 interface */
 #define NOMADIK_SGA_BASE	0x101FE000	/* SGA interface */
 #define NOMADIK_L2CC_BASE	0x10210000	/* L2 Cache controller */
 #define NOMADIK_UART1_VBASE	0xF01FB000

 /* This is needed for LL-debug/earlyprintk/debug-macro.S */
 static struct map_desc cpu8815_io_desc[] __initdata = {
 	{
 		.virtual =	NOMADIK_UART1_VBASE,
 		.pfn =		__phys_to_pfn(NOMADIK_UART1_BASE),
 		.length =	SZ_4K,
 		.type =		MT_DEVICE,
 	},
 };

 static void __init cpu8815_map_io(void)
 {
 	iotable_init(cpu8815_io_desc, ARRAY_SIZE(cpu8815_io_desc));
 }

 static void cpu8815_restart(enum reboot_mode mode, const char *cmd)
 {
 	void __iomem *srcbase = ioremap(NOMADIK_SRC_BASE, SZ_4K);

 	/* FIXME: use egpio when implemented */

 	/* Write anything to Reset status register */
 	writel(1, srcbase + 0x18);
 }

 /*
  * The SMSC911x IRQ is connected to a GPIO pin, but the driver expects
  * to simply request an IRQ passed as a resource. So the GPIO pin needs
  * to be requested by this hog and set as input.
  */
 static int __init cpu8815_eth_init(void)
 {
 	struct device_node *eth;
 	int gpio, irq, err;

 	eth = of_find_node_by_path("/usb-s8815/ethernet-gpio");
 	if (!eth) {
 		pr_info("could not find any ethernet GPIO\n");
 		return 0;
 	}
 	gpio = of_get_gpio(eth, 0);
 	err = gpio_request(gpio, "eth_irq");
 	if (err) {
 		pr_info("failed to request ethernet GPIO\n");
 		return -ENODEV;
 	}
 	err = gpio_direction_input(gpio);
 	if (err) {
 		pr_info("failed to set ethernet GPIO as input\n");
 		return -ENODEV;
 	}
 	irq = gpio_to_irq(gpio);
 	pr_info("enabled USB-S8815 ethernet GPIO %d, IRQ %d\n", gpio, irq);
 	return 0;
 }
 device_initcall(cpu8815_eth_init);

 /*
  * This GPIO pin turns on a line that is used to detect card insertion
  * on this board.
  */
 static int __init cpu8815_mmcsd_init(void)
 {
 	struct device_node *cdbias;
 	int gpio, err;

 	cdbias = of_find_node_by_path("/usb-s8815/mmcsd-gpio");
 	if (!cdbias) {
 		pr_info("could not find MMC/SD card detect bias node\n");
 		return 0;
 	}
 	gpio = of_get_gpio(cdbias, 0);
 	if (gpio < 0) {
 		pr_info("could not obtain MMC/SD card detect bias GPIO\n");
 		return 0;
 	}
 	err = gpio_request(gpio, "card detect bias");
 	if (err) {
 		pr_info("failed to request card detect bias GPIO %d\n", gpio);
 		return -ENODEV;
 	}
 	err = gpio_direction_output(gpio, 0);
 	if (err){
 		pr_info("failed to set GPIO %d as output, low\n", gpio);
 		return err;
 	}
 	pr_info("enabled USB-S8815 CD bias GPIO %d, low\n", gpio);
 	return 0;
 }
 device_initcall(cpu8815_mmcsd_init);

 static void __init cpu8815_init_of(void)
 {
 #ifdef CONFIG_CACHE_L2X0
 	/* At full speed latency must be >=2, so 0x249 in low bits */
 	l2x0_of_init(0x00730249, 0xfe000fff);
 #endif
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 }

 static const char * cpu8815_board_compat[] = {
 	"calaosystems,usb-s8815",
 	NULL,
 };

 DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815")
 	.map_io		= cpu8815_map_io,
 	.init_machine	= cpu8815_init_of,
 	.restart	= cpu8815_restart,
 	.dt_compat      = cpu8815_board_compat,
 MACHINE_END
	/*
	* Copyright STMicroelectronics, 2007.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/

	#include <linux/types.h>
	#include <linux/init.h>
	#include <linux/device.h>
	#include <linux/amba/bus.h>
	#include <linux/platform_device.h>
	#include <linux/io.h>
	#include <linux/slab.h>
	#include <linux/irq.h>
	#include <linux/dma-mapping.h>
	#include <linux/of_irq.h>
	#include <linux/of_gpio.h>
	#include <linux/of_address.h>
	#include <linux/of_platform.h>
	#include <linux/gpio.h>

	#include <asm/mach/arch.h>
	#include <asm/mach/map.h>
	#include <asm/mach/time.h>
	#include <asm/mach-types.h>

	#include <asm/cacheflush.h>
	#include <asm/hardware/cache-l2x0.h>

	/*
	* These are the only hard-coded address offsets we still have to use.
	*/
	#define NOMADIK_FSMC_BASE 0x10100000 /* FSMC registers */
	#define NOMADIK_SDRAMC_BASE 0x10110000 /* SDRAM Controller */
	#define NOMADIK_CLCDC_BASE 0x10120000 /* CLCD Controller */
	#define NOMADIK_MDIF_BASE 0x10120000 /* MDIF */
	#define NOMADIK_DMA0_BASE 0x10130000 /* DMA0 Controller */
	#define NOMADIK_IC_BASE 0x10140000 /* Vectored Irq Controller */
	#define NOMADIK_DMA1_BASE 0x10150000 /* DMA1 Controller */
	#define NOMADIK_USB_BASE 0x10170000 /* USB-OTG conf reg base */
	#define NOMADIK_CRYP_BASE 0x10180000 /* Crypto processor */
	#define NOMADIK_SHA1_BASE 0x10190000 /* SHA-1 Processor */
	#define NOMADIK_XTI_BASE 0x101A0000 /* XTI */
	#define NOMADIK_RNG_BASE 0x101B0000 /* Random number generator */
	#define NOMADIK_SRC_BASE 0x101E0000 /* SRC base */
	#define NOMADIK_WDOG_BASE 0x101E1000 /* Watchdog */
	#define NOMADIK_MTU0_BASE 0x101E2000 /* Multiple Timer 0 */
	#define NOMADIK_MTU1_BASE 0x101E3000 /* Multiple Timer 1 */
	#define NOMADIK_GPIO0_BASE 0x101E4000 /* GPIO0 */
	#define NOMADIK_GPIO1_BASE 0x101E5000 /* GPIO1 */
	#define NOMADIK_GPIO2_BASE 0x101E6000 /* GPIO2 */
	#define NOMADIK_GPIO3_BASE 0x101E7000 /* GPIO3 */
	#define NOMADIK_RTC_BASE 0x101E8000 /* Real Time Clock base */
	#define NOMADIK_PMU_BASE 0x101E9000 /* Power Management Unit */
	#define NOMADIK_OWM_BASE 0x101EA000 /* One wire master */
	#define NOMADIK_SCR_BASE 0x101EF000 /* Secure Control registers */
	#define NOMADIK_MSP2_BASE 0x101F0000 /* MSP 2 interface */
	#define NOMADIK_MSP1_BASE 0x101F1000 /* MSP 1 interface */
	#define NOMADIK_UART2_BASE 0x101F2000 /* UART 2 interface */
	#define NOMADIK_SSIRx_BASE 0x101F3000 /* SSI 8-ch rx interface */
	#define NOMADIK_SSITx_BASE 0x101F4000 /* SSI 8-ch tx interface */
	#define NOMADIK_MSHC_BASE 0x101F5000 /* Memory Stick(Pro) Host */
	#define NOMADIK_SDI_BASE 0x101F6000 /* SD-card/MM-Card */
	#define NOMADIK_I2C1_BASE 0x101F7000 /* I2C1 interface */
	#define NOMADIK_I2C0_BASE 0x101F8000 /* I2C0 interface */
	#define NOMADIK_MSP0_BASE 0x101F9000 /* MSP 0 interface */
	#define NOMADIK_FIRDA_BASE 0x101FA000 /* FIrDA interface */
	#define NOMADIK_UART1_BASE 0x101FB000 /* UART 1 interface */
	#define NOMADIK_SSP_BASE 0x101FC000 /* SSP interface */
	#define NOMADIK_UART0_BASE 0x101FD000 /* UART 0 interface */
	#define NOMADIK_SGA_BASE 0x101FE000 /* SGA interface */
	#define NOMADIK_L2CC_BASE 0x10210000 /* L2 Cache controller */
	#define NOMADIK_UART1_VBASE 0xF01FB000

	/* This is needed for LL-debug/earlyprintk/debug-macro.S */
	static struct map_desc cpu8815_io_desc[] __initdata = {
	{
	.virtual = NOMADIK_UART1_VBASE,
	.pfn = __phys_to_pfn(NOMADIK_UART1_BASE),
	.length = SZ_4K,
	.type = MT_DEVICE,
	},
	};

	static void __init cpu8815_map_io(void)
	{
	iotable_init(cpu8815_io_desc, ARRAY_SIZE(cpu8815_io_desc));
	}

	static void cpu8815_restart(enum reboot_mode mode, const char *cmd)
	{
	void __iomem *srcbase = ioremap(NOMADIK_SRC_BASE, SZ_4K);

	/* FIXME: use egpio when implemented */

	/* Write anything to Reset status register */
	writel(1, srcbase + 0x18);
	}

	/*
	* The SMSC911x IRQ is connected to a GPIO pin, but the driver expects
	* to simply request an IRQ passed as a resource. So the GPIO pin needs
	* to be requested by this hog and set as input.
	*/
	static int __init cpu8815_eth_init(void)
	{
	struct device_node *eth;
	int gpio, irq, err;

	eth = of_find_node_by_path("/usb-s8815/ethernet-gpio");
	if (!eth) {
	pr_info("could not find any ethernet GPIO\n");
	return 0;
	}
	gpio = of_get_gpio(eth, 0);
	err = gpio_request(gpio, "eth_irq");
	if (err) {
	pr_info("failed to request ethernet GPIO\n");
	return -ENODEV;
	}
	err = gpio_direction_input(gpio);
	if (err) {
	pr_info("failed to set ethernet GPIO as input\n");
	return -ENODEV;
	}
	irq = gpio_to_irq(gpio);
	pr_info("enabled USB-S8815 ethernet GPIO %d, IRQ %d\n", gpio, irq);
	return 0;
	}
	device_initcall(cpu8815_eth_init);

	/*
	* This GPIO pin turns on a line that is used to detect card insertion
	* on this board.
	*/
	static int __init cpu8815_mmcsd_init(void)
	{
	struct device_node *cdbias;
	int gpio, err;

	cdbias = of_find_node_by_path("/usb-s8815/mmcsd-gpio");
	if (!cdbias) {
	pr_info("could not find MMC/SD card detect bias node\n");
	return 0;
	}
	gpio = of_get_gpio(cdbias, 0);
	if (gpio < 0) {
	pr_info("could not obtain MMC/SD card detect bias GPIO\n");
	return 0;
	}
	err = gpio_request(gpio, "card detect bias");
	if (err) {
	pr_info("failed to request card detect bias GPIO %d\n", gpio);
	return -ENODEV;
	}
	err = gpio_direction_output(gpio, 0);
	if (err){
	pr_info("failed to set GPIO %d as output, low\n", gpio);
	return err;
	}
	pr_info("enabled USB-S8815 CD bias GPIO %d, low\n", gpio);
	return 0;
	}
	device_initcall(cpu8815_mmcsd_init);

	static void __init cpu8815_init_of(void)
	{
	#ifdef CONFIG_CACHE_L2X0
	/* At full speed latency must be >=2, so 0x249 in low bits */
	l2x0_of_init(0x00730249, 0xfe000fff);
	#endif
	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
	}

	static const char * cpu8815_board_compat[] = {
	"calaosystems,usb-s8815",
	NULL,
	};

	DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815")
	.map_io = cpu8815_map_io,
	.init_machine = cpu8815_init_of,
	.restart = cpu8815_restart,
	.dt_compat = cpu8815_board_compat,
	MACHINE_END