[deliverable/linux.git] / arch / arm / mach-nomadik / cpu-8815.c

/*
 * 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
Commit	Line	Data
28ad94ec AR	1	/*
	2	* Copyright STMicroelectronics, 2007.
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License as published by
	6	* the Free Software Foundation; either version 2 of the License, or
	7	* (at your option) any later version.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	17	*/
	18
	19	#include <linux/types.h>
	20	#include <linux/init.h>
	21	#include <linux/device.h>
2ec1d359	22	#include <linux/amba/bus.h>
3e3c62ca	23	#include <linux/platform_device.h>
35b47a40	24	#include <linux/io.h>
7c77852d LW	25	#include <linux/slab.h>
	26	#include <linux/irq.h>
	27	#include <linux/dma-mapping.h>
f8635abd	28	#include <linux/of_irq.h>
2ad6e398	29	#include <linux/of_gpio.h>
f8635abd LW	30	#include <linux/of_address.h>
f8635abd LW	31	#include <linux/of_platform.h>
2ad6e398	32	#include <linux/gpio.h>
28ad94ec	33
f8635abd	34	#include <asm/mach/arch.h>
28ad94ec	35	#include <asm/mach/map.h>
f8635abd	36	#include <asm/mach/time.h>
27bda036	37	#include <asm/mach-types.h>
28ad94ec	38
0b260fd4 AR	39	#include <asm/cacheflush.h>
	40	#include <asm/hardware/cache-l2x0.h>
	41
dea3eacd LW	42	/*
	43	* These are the only hard-coded address offsets we still have to use.
	44	*/
	45	#define NOMADIK_FSMC_BASE 0x10100000 /* FSMC registers */
	46	#define NOMADIK_SDRAMC_BASE 0x10110000 /* SDRAM Controller */
	47	#define NOMADIK_CLCDC_BASE 0x10120000 /* CLCD Controller */
	48	#define NOMADIK_MDIF_BASE 0x10120000 /* MDIF */
	49	#define NOMADIK_DMA0_BASE 0x10130000 /* DMA0 Controller */
	50	#define NOMADIK_IC_BASE 0x10140000 /* Vectored Irq Controller */
	51	#define NOMADIK_DMA1_BASE 0x10150000 /* DMA1 Controller */
	52	#define NOMADIK_USB_BASE 0x10170000 /* USB-OTG conf reg base */
	53	#define NOMADIK_CRYP_BASE 0x10180000 /* Crypto processor */
	54	#define NOMADIK_SHA1_BASE 0x10190000 /* SHA-1 Processor */
	55	#define NOMADIK_XTI_BASE 0x101A0000 /* XTI */
	56	#define NOMADIK_RNG_BASE 0x101B0000 /* Random number generator */
	57	#define NOMADIK_SRC_BASE 0x101E0000 /* SRC base */
	58	#define NOMADIK_WDOG_BASE 0x101E1000 /* Watchdog */
	59	#define NOMADIK_MTU0_BASE 0x101E2000 /* Multiple Timer 0 */
	60	#define NOMADIK_MTU1_BASE 0x101E3000 /* Multiple Timer 1 */
	61	#define NOMADIK_GPIO0_BASE 0x101E4000 /* GPIO0 */
	62	#define NOMADIK_GPIO1_BASE 0x101E5000 /* GPIO1 */
	63	#define NOMADIK_GPIO2_BASE 0x101E6000 /* GPIO2 */
	64	#define NOMADIK_GPIO3_BASE 0x101E7000 /* GPIO3 */
	65	#define NOMADIK_RTC_BASE 0x101E8000 /* Real Time Clock base */
	66	#define NOMADIK_PMU_BASE 0x101E9000 /* Power Management Unit */
	67	#define NOMADIK_OWM_BASE 0x101EA000 /* One wire master */
	68	#define NOMADIK_SCR_BASE 0x101EF000 /* Secure Control registers */
	69	#define NOMADIK_MSP2_BASE 0x101F0000 /* MSP 2 interface */
	70	#define NOMADIK_MSP1_BASE 0x101F1000 /* MSP 1 interface */
	71	#define NOMADIK_UART2_BASE 0x101F2000 /* UART 2 interface */
	72	#define NOMADIK_SSIRx_BASE 0x101F3000 /* SSI 8-ch rx interface */
	73	#define NOMADIK_SSITx_BASE 0x101F4000 /* SSI 8-ch tx interface */
	74	#define NOMADIK_MSHC_BASE 0x101F5000 /* Memory Stick(Pro) Host */
	75	#define NOMADIK_SDI_BASE 0x101F6000 /* SD-card/MM-Card */
	76	#define NOMADIK_I2C1_BASE 0x101F7000 /* I2C1 interface */
	77	#define NOMADIK_I2C0_BASE 0x101F8000 /* I2C0 interface */
	78	#define NOMADIK_MSP0_BASE 0x101F9000 /* MSP 0 interface */
	79	#define NOMADIK_FIRDA_BASE 0x101FA000 /* FIrDA interface */
	80	#define NOMADIK_UART1_BASE 0x101FB000 /* UART 1 interface */
	81	#define NOMADIK_SSP_BASE 0x101FC000 /* SSP interface */
	82	#define NOMADIK_UART0_BASE 0x101FD000 /* UART 0 interface */
	83	#define NOMADIK_SGA_BASE 0x101FE000 /* SGA interface */
	84	#define NOMADIK_L2CC_BASE 0x10210000 /* L2 Cache controller */
	85	#define NOMADIK_UART1_VBASE 0xF01FB000
	86
dea3eacd LW	87	/* This is needed for LL-debug/earlyprintk/debug-macro.S */
dea3eacd LW	88	static struct map_desc cpu8815_io_desc[] __initdata = {
28ad94ec	89	{
dea3eacd LW	90	.virtual = NOMADIK_UART1_VBASE,
	91	.pfn = __phys_to_pfn(NOMADIK_UART1_BASE),
	92	.length = SZ_4K,
	93	.type = MT_DEVICE,
	94	},
28ad94ec AR	95	};
28ad94ec AR	96
5f66d482	97	static void __init cpu8815_map_io(void)
28ad94ec	98	{
dea3eacd	99	iotable_init(cpu8815_io_desc, ARRAY_SIZE(cpu8815_io_desc));
28ad94ec AR	100	}
28ad94ec AR	101
7b6d864b	102	static void cpu8815_restart(enum reboot_mode mode, const char *cmd)
35b47a40	103	{
dea3eacd	104	void __iomem *srcbase = ioremap(NOMADIK_SRC_BASE, SZ_4K);
35b47a40 RK	105
	106	/* FIXME: use egpio when implemented */
	107
	108	/* Write anything to Reset status register */
dea3eacd	109	writel(1, srcbase + 0x18);
35b47a40	110	}
f8635abd	111
2ad6e398 LW	112	/*
	113	* The SMSC911x IRQ is connected to a GPIO pin, but the driver expects
	114	* to simply request an IRQ passed as a resource. So the GPIO pin needs
	115	* to be requested by this hog and set as input.
	116	*/
	117	static int __init cpu8815_eth_init(void)
	118	{
	119	struct device_node *eth;
	120	int gpio, irq, err;
	121
	122	eth = of_find_node_by_path("/usb-s8815/ethernet-gpio");
	123	if (!eth) {
	124	pr_info("could not find any ethernet GPIO\n");
	125	return 0;
	126	}
	127	gpio = of_get_gpio(eth, 0);
	128	err = gpio_request(gpio, "eth_irq");
	129	if (err) {
	130	pr_info("failed to request ethernet GPIO\n");
	131	return -ENODEV;
	132	}
	133	err = gpio_direction_input(gpio);
	134	if (err) {
	135	pr_info("failed to set ethernet GPIO as input\n");
	136	return -ENODEV;
	137	}
	138	irq = gpio_to_irq(gpio);
	139	pr_info("enabled USB-S8815 ethernet GPIO %d, IRQ %d\n", gpio, irq);
	140	return 0;
	141	}
	142	device_initcall(cpu8815_eth_init);
	143
4fd243c6 LW	144	/*
	145	* This GPIO pin turns on a line that is used to detect card insertion
	146	* on this board.
	147	*/
	148	static int __init cpu8815_mmcsd_init(void)
	149	{
	150	struct device_node *cdbias;
	151	int gpio, err;
	152
	153	cdbias = of_find_node_by_path("/usb-s8815/mmcsd-gpio");
	154	if (!cdbias) {
	155	pr_info("could not find MMC/SD card detect bias node\n");
	156	return 0;
	157	}
	158	gpio = of_get_gpio(cdbias, 0);
	159	if (gpio < 0) {
	160	pr_info("could not obtain MMC/SD card detect bias GPIO\n");
	161	return 0;
	162	}
	163	err = gpio_request(gpio, "card detect bias");
	164	if (err) {
	165	pr_info("failed to request card detect bias GPIO %d\n", gpio);
	166	return -ENODEV;
	167	}
	168	err = gpio_direction_output(gpio, 0);
	169	if (err){
	170	pr_info("failed to set GPIO %d as output, low\n", gpio);
	171	return err;
	172	}
	173	pr_info("enabled USB-S8815 CD bias GPIO %d, low\n", gpio);
	174	return 0;
	175	}
	176	device_initcall(cpu8815_mmcsd_init);
	177
f8635abd LW	178	static void __init cpu8815_init_of(void)
	179	{
	180	#ifdef CONFIG_CACHE_L2X0
	181	/* At full speed latency must be >=2, so 0x249 in low bits */
	182	l2x0_of_init(0x00730249, 0xfe000fff);
	183	#endif
2c5a7424	184	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
f8635abd LW	185	}
	186
	187	static const char * cpu8815_board_compat[] = {
	188	"calaosystems,usb-s8815",
	189	NULL,
	190	};
	191
	192	DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815")
	193	.map_io = cpu8815_map_io,
f8635abd LW	194	.init_machine = cpu8815_init_of,
	195	.restart = cpu8815_restart,
	196	.dt_compat = cpu8815_board_compat,
	197	MACHINE_END