[mirror_ubuntu-artful-kernel.git] / arch / powerpc / platforms / 83xx / mpc832x_rdb.c

/*
 * arch/powerpc/platforms/83xx/mpc832x_rdb.c
 *
 * Copyright (C) Freescale Semiconductor, Inc. 2007. All rights reserved.
 *
 * Description:
 * MPC832x RDB board specific routines.
 * This file is based on mpc832x_mds.c and mpc8313_rdb.c
 * Author: Michael Barkowski <michael.barkowski@freescale.com>
 *
 * 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.
 */

#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/spi/spi.h>
#include <linux/spi/mmc_spi.h>
#include <linux/mmc/host.h>
#include <linux/of_platform.h>
#include <linux/fsl_devices.h>

#include <asm/time.h>
#include <asm/ipic.h>
#include <asm/udbg.h>
#include <soc/fsl/qe/qe.h>
#include <soc/fsl/qe/qe_ic.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>

#include "mpc83xx.h"

#undef DEBUG
#ifdef DEBUG
#define DBG(fmt...) udbg_printf(fmt)
#else
#define DBG(fmt...)
#endif

#ifdef CONFIG_QUICC_ENGINE
static int __init of_fsl_spi_probe(char *type, char *compatible, u32 sysclk,
				   struct spi_board_info *board_infos,
				   unsigned int num_board_infos,
				   void (*cs_control)(struct spi_device *dev,
						      bool on))
{
	struct device_node *np;
	unsigned int i = 0;

	for_each_compatible_node(np, type, compatible) {
		int ret;
		unsigned int j;
		const void *prop;
		struct resource res[2];
		struct platform_device *pdev;
		struct fsl_spi_platform_data pdata = {
			.cs_control = cs_control,
		};

		memset(res, 0, sizeof(res));

		pdata.sysclk = sysclk;

		prop = of_get_property(np, "reg", NULL);
		if (!prop)
			goto err;
		pdata.bus_num = *(u32 *)prop;

		prop = of_get_property(np, "cell-index", NULL);
		if (prop)
			i = *(u32 *)prop;

		prop = of_get_property(np, "mode", NULL);
		if (prop && !strcmp(prop, "cpu-qe"))
			pdata.flags = SPI_QE_CPU_MODE;

		for (j = 0; j < num_board_infos; j++) {
			if (board_infos[j].bus_num == pdata.bus_num)
				pdata.max_chipselect++;
		}

		if (!pdata.max_chipselect)
			continue;

		ret = of_address_to_resource(np, 0, &res[0]);
		if (ret)
			goto err;

		ret = of_irq_to_resource(np, 0, &res[1]);
		if (ret <= 0)
			goto err;

		pdev = platform_device_alloc("mpc83xx_spi", i);
		if (!pdev)
			goto err;

		ret = platform_device_add_data(pdev, &pdata, sizeof(pdata));
		if (ret)
			goto unreg;

		ret = platform_device_add_resources(pdev, res,
						    ARRAY_SIZE(res));
		if (ret)
			goto unreg;

		ret = platform_device_add(pdev);
		if (ret)
			goto unreg;

		goto next;
unreg:
		platform_device_del(pdev);
err:
		pr_err("%s: registration failed\n", np->full_name);
next:
		i++;
	}

	return i;
}

static int __init fsl_spi_init(struct spi_board_info *board_infos,
			       unsigned int num_board_infos,
			       void (*cs_control)(struct spi_device *spi,
						  bool on))
{
	u32 sysclk = -1;
	int ret;

	/* SPI controller is either clocked from QE or SoC clock */
	sysclk = get_brgfreq();
	if (sysclk == -1) {
		sysclk = fsl_get_sys_freq();
		if (sysclk == -1)
			return -ENODEV;
	}

	ret = of_fsl_spi_probe(NULL, "fsl,spi", sysclk, board_infos,
			       num_board_infos, cs_control);
	if (!ret)
		of_fsl_spi_probe("spi", "fsl_spi", sysclk, board_infos,
				 num_board_infos, cs_control);

	return spi_register_board_info(board_infos, num_board_infos);
}

static void mpc83xx_spi_cs_control(struct spi_device *spi, bool on)
{
	pr_debug("%s %d %d\n", __func__, spi->chip_select, on);
	par_io_data_set(3, 13, on);
}

static struct mmc_spi_platform_data mpc832x_mmc_pdata = {
	.ocr_mask = MMC_VDD_33_34,
};

static struct spi_board_info mpc832x_spi_boardinfo = {
	.bus_num = 0x4c0,
	.chip_select = 0,
	.max_speed_hz = 50000000,
	.modalias = "mmc_spi",
	.platform_data = &mpc832x_mmc_pdata,
};

static int __init mpc832x_spi_init(void)
{
	par_io_config_pin(3,  0, 3, 0, 1, 0); /* SPI1 MOSI, I/O */
	par_io_config_pin(3,  1, 3, 0, 1, 0); /* SPI1 MISO, I/O */
	par_io_config_pin(3,  2, 3, 0, 1, 0); /* SPI1 CLK,  I/O */
	par_io_config_pin(3,  3, 2, 0, 1, 0); /* SPI1 SEL,  I   */

	par_io_config_pin(3, 13, 1, 0, 0, 0); /* !SD_CS,    O */
	par_io_config_pin(3, 14, 2, 0, 0, 0); /* SD_INSERT, I */
	par_io_config_pin(3, 15, 2, 0, 0, 0); /* SD_PROTECT,I */

	/*
	 * Don't bother with legacy stuff when device tree contains
	 * mmc-spi-slot node.
	 */
	if (of_find_compatible_node(NULL, NULL, "mmc-spi-slot"))
		return 0;
	return fsl_spi_init(&mpc832x_spi_boardinfo, 1, mpc83xx_spi_cs_control);
}
machine_device_initcall(mpc832x_rdb, mpc832x_spi_init);
#endif /* CONFIG_QUICC_ENGINE */

/* ************************************************************************
 *
 * Setup the architecture
 *
 */
static void __init mpc832x_rdb_setup_arch(void)
{
#if defined(CONFIG_QUICC_ENGINE)
	struct device_node *np;
#endif

	mpc83xx_setup_arch();

#ifdef CONFIG_QUICC_ENGINE
	if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
		par_io_init(np);
		of_node_put(np);

		for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
			par_io_of_config(np);
	}
#endif				/* CONFIG_QUICC_ENGINE */
}

machine_device_initcall(mpc832x_rdb, mpc83xx_declare_of_platform_devices);

/*
 * Called very early, MMU is off, device-tree isn't unflattened
 */
static int __init mpc832x_rdb_probe(void)
{
	return of_machine_is_compatible("MPC832xRDB");
}

define_machine(mpc832x_rdb) {
	.name		= "MPC832x RDB",
	.probe		= mpc832x_rdb_probe,
	.setup_arch	= mpc832x_rdb_setup_arch,
	.init_IRQ	= mpc83xx_ipic_and_qe_init_IRQ,
	.get_irq	= ipic_get_irq,
	.restart	= mpc83xx_restart,
	.time_init	= mpc83xx_time_init,
	.calibrate_decr	= generic_calibrate_decr,
	.progress	= udbg_progress,
};
Commit	Line	Data
23308c54 MB	1	/*
	2	* arch/powerpc/platforms/83xx/mpc832x_rdb.c
	3	*
	4	* Copyright (C) Freescale Semiconductor, Inc. 2007. All rights reserved.
	5	*
	6	* Description:
	7	* MPC832x RDB board specific routines.
	8	* This file is based on mpc832x_mds.c and mpc8313_rdb.c
	9	* Author: Michael Barkowski <michael.barkowski@freescale.com>
	10	*
	11	* This program is free software; you can redistribute it and/or modify it
	12	* under the terms of the GNU General Public License as published by the
	13	* Free Software Foundation; either version 2 of the License, or (at your
	14	* option) any later version.
	15	*/
	16
	17	#include <linux/pci.h>
ba3bdff5	18	#include <linux/interrupt.h>
8237bf08	19	#include <linux/spi/spi.h>
ba3bdff5 AV	20	#include <linux/spi/mmc_spi.h>
ba3bdff5 AV	21	#include <linux/mmc/host.h>
882407b9	22	#include <linux/of_platform.h>
e2801806	23	#include <linux/fsl_devices.h>
23308c54	24
23308c54 MB	25	#include <asm/time.h>
	26	#include <asm/ipic.h>
	27	#include <asm/udbg.h>
7aa1aa6e ZQ	28	#include <soc/fsl/qe/qe.h>
7aa1aa6e ZQ	29	#include <soc/fsl/qe/qe_ic.h>
8237bf08	30	#include <sysdev/fsl_soc.h>
76fe1ffc	31	#include <sysdev/fsl_pci.h>
23308c54 MB	32
	33	#include "mpc83xx.h"
	34
	35	#undef DEBUG
	36	#ifdef DEBUG
	37	#define DBG(fmt...) udbg_printf(fmt)
	38	#else
	39	#define DBG(fmt...)
	40	#endif
	41
20cfb41b	42	#ifdef CONFIG_QUICC_ENGINE
e2801806 AV	43	static int __init of_fsl_spi_probe(char type, char compatible, u32 sysclk,
	44	struct spi_board_info *board_infos,
	45	unsigned int num_board_infos,
	46	void (cs_control)(struct spi_device dev,
	47	bool on))
	48	{
	49	struct device_node *np;
	50	unsigned int i = 0;
	51
	52	for_each_compatible_node(np, type, compatible) {
	53	int ret;
	54	unsigned int j;
	55	const void *prop;
	56	struct resource res[2];
	57	struct platform_device *pdev;
	58	struct fsl_spi_platform_data pdata = {
	59	.cs_control = cs_control,
	60	};
	61
	62	memset(res, 0, sizeof(res));
	63
	64	pdata.sysclk = sysclk;
	65
	66	prop = of_get_property(np, "reg", NULL);
	67	if (!prop)
	68	goto err;
	69	pdata.bus_num = (u32 )prop;
	70
	71	prop = of_get_property(np, "cell-index", NULL);
	72	if (prop)
	73	i = (u32 )prop;
	74
	75	prop = of_get_property(np, "mode", NULL);
	76	if (prop && !strcmp(prop, "cpu-qe"))
7d6709a2	77	pdata.flags = SPI_QE_CPU_MODE;
e2801806 AV	78
	79	for (j = 0; j < num_board_infos; j++) {
	80	if (board_infos[j].bus_num == pdata.bus_num)
	81	pdata.max_chipselect++;
	82	}
	83
	84	if (!pdata.max_chipselect)
	85	continue;
	86
	87	ret = of_address_to_resource(np, 0, &res[0]);
	88	if (ret)
	89	goto err;
	90
	91	ret = of_irq_to_resource(np, 0, &res[1]);
f29bb786	92	if (ret <= 0)
e2801806 AV	93	goto err;
	94
	95	pdev = platform_device_alloc("mpc83xx_spi", i);
	96	if (!pdev)
	97	goto err;
	98
	99	ret = platform_device_add_data(pdev, &pdata, sizeof(pdata));
	100	if (ret)
	101	goto unreg;
	102
	103	ret = platform_device_add_resources(pdev, res,
	104	ARRAY_SIZE(res));
	105	if (ret)
	106	goto unreg;
	107
	108	ret = platform_device_add(pdev);
	109	if (ret)
	110	goto unreg;
	111
	112	goto next;
	113	unreg:
	114	platform_device_del(pdev);
	115	err:
	116	pr_err("%s: registration failed\n", np->full_name);
	117	next:
	118	i++;
	119	}
	120
	121	return i;
	122	}
	123
	124	static int __init fsl_spi_init(struct spi_board_info *board_infos,
	125	unsigned int num_board_infos,
	126	void (cs_control)(struct spi_device spi,
	127	bool on))
	128	{
	129	u32 sysclk = -1;
	130	int ret;
	131
	132	/* SPI controller is either clocked from QE or SoC clock */
	133	sysclk = get_brgfreq();
	134	if (sysclk == -1) {
	135	sysclk = fsl_get_sys_freq();
	136	if (sysclk == -1)
	137	return -ENODEV;
	138	}
	139
	140	ret = of_fsl_spi_probe(NULL, "fsl,spi", sysclk, board_infos,
	141	num_board_infos, cs_control);
	142	if (!ret)
	143	of_fsl_spi_probe("spi", "fsl_spi", sysclk, board_infos,
	144	num_board_infos, cs_control);
	145
	146	return spi_register_board_info(board_infos, num_board_infos);
	147	}
	148
364fdbc0	149	static void mpc83xx_spi_cs_control(struct spi_device *spi, bool on)
8237bf08	150	{
364fdbc0 AV	151	pr_debug("%s %d %d\n", __func__, spi->chip_select, on);
364fdbc0 AV	152	par_io_data_set(3, 13, on);
8237bf08 AV	153	}
8237bf08 AV	154
ba3bdff5 AV	155	static struct mmc_spi_platform_data mpc832x_mmc_pdata = {
	156	.ocr_mask = MMC_VDD_33_34,
	157	};
	158
8237bf08 AV	159	static struct spi_board_info mpc832x_spi_boardinfo = {
	160	.bus_num = 0x4c0,
	161	.chip_select = 0,
	162	.max_speed_hz = 50000000,
ba3bdff5 AV	163	.modalias = "mmc_spi",
ba3bdff5 AV	164	.platform_data = &mpc832x_mmc_pdata,
8237bf08 AV	165	};
	166
	167	static int __init mpc832x_spi_init(void)
	168	{
8237bf08 AV	169	par_io_config_pin(3, 0, 3, 0, 1, 0); /* SPI1 MOSI, I/O */
	170	par_io_config_pin(3, 1, 3, 0, 1, 0); /* SPI1 MISO, I/O */
	171	par_io_config_pin(3, 2, 3, 0, 1, 0); /* SPI1 CLK, I/O */
	172	par_io_config_pin(3, 3, 2, 0, 1, 0); /* SPI1 SEL, I */
	173
	174	par_io_config_pin(3, 13, 1, 0, 0, 0); /* !SD_CS, O */
	175	par_io_config_pin(3, 14, 2, 0, 0, 0); /* SD_INSERT, I */
	176	par_io_config_pin(3, 15, 2, 0, 0, 0); /* SD_PROTECT,I */
	177
75458285 AV	178	/*
	179	* Don't bother with legacy stuff when device tree contains
	180	* mmc-spi-slot node.
	181	*/
	182	if (of_find_compatible_node(NULL, NULL, "mmc-spi-slot"))
	183	return 0;
364fdbc0	184	return fsl_spi_init(&mpc832x_spi_boardinfo, 1, mpc83xx_spi_cs_control);
8237bf08	185	}
6392f184	186	machine_device_initcall(mpc832x_rdb, mpc832x_spi_init);
20cfb41b	187	#endif /* CONFIG_QUICC_ENGINE */
8237bf08	188
23308c54 MB	189	/* ************************************************************************
	190	*
	191	* Setup the architecture
	192	*
	193	*/
	194	static void __init mpc832x_rdb_setup_arch(void)
	195	{
bede480d	196	#if defined(CONFIG_QUICC_ENGINE)
23308c54	197	struct device_node *np;
c9ec87e5	198	#endif
23308c54	199
fff69fd0	200	mpc83xx_setup_arch();
23308c54 MB	201
23308c54 MB	202	#ifdef CONFIG_QUICC_ENGINE
aafa1955	203	if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
23308c54 MB	204	par_io_init(np);
	205	of_node_put(np);
	206
	207	for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
	208	par_io_of_config(np);
	209	}
	210	#endif /* CONFIG_QUICC_ENGINE */
	211	}
	212
7669d58c	213	machine_device_initcall(mpc832x_rdb, mpc83xx_declare_of_platform_devices);
23308c54	214
23308c54 MB	215	/*
	216	* Called very early, MMU is off, device-tree isn't unflattened
	217	*/
	218	static int __init mpc832x_rdb_probe(void)
	219	{
56571384	220	return of_machine_is_compatible("MPC832xRDB");
23308c54 MB	221	}
	222
	223	define_machine(mpc832x_rdb) {
	224	.name = "MPC832x RDB",
	225	.probe = mpc832x_rdb_probe,
	226	.setup_arch = mpc832x_rdb_setup_arch,
d4fb5ebd	227	.init_IRQ = mpc83xx_ipic_and_qe_init_IRQ,
23308c54 MB	228	.get_irq = ipic_get_irq,
	229	.restart = mpc83xx_restart,
	230	.time_init = mpc83xx_time_init,
	231	.calibrate_decr = generic_calibrate_decr,
	232	.progress = udbg_progress,
	233	};