[linux-2.6-block.git] / drivers / reset / sti / reset-stih416.c

/*
 * Copyright (C) 2013 STMicroelectronics (R&D) Limited
 * Author: Stephen Gallimore <stephen.gallimore@st.com>
 * Author: Srinivas Kandagatla <srinivas.kandagatla@st.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/module.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>

#include <dt-bindings/reset-controller/stih416-resets.h>

#include "reset-syscfg.h"

/*
 * STiH416 Peripheral powerdown definitions.
 */
static const char stih416_front[] = "st,stih416-front-syscfg";
static const char stih416_rear[] = "st,stih416-rear-syscfg";
static const char stih416_sbc[] = "st,stih416-sbc-syscfg";
static const char stih416_lpm[] = "st,stih416-lpm-syscfg";
static const char stih416_cpu[] = "st,stih416-cpu-syscfg";

#define STIH416_PDN_FRONT(_bit) \
	_SYSCFG_RST_CH(stih416_front, SYSCFG_1500, _bit, SYSSTAT_1578, _bit)

#define STIH416_PDN_REAR(_cntl, _stat) \
	_SYSCFG_RST_CH(stih416_rear, SYSCFG_2525, _cntl, SYSSTAT_2583, _stat)

#define SYSCFG_1500	0x7d0 /* Powerdown request EMI/NAND/Keyscan */
#define SYSSTAT_1578	0x908 /* Powerdown status EMI/NAND/Keyscan */

#define SYSCFG_2525	0x834 /* Powerdown request USB/SATA/PCIe */
#define SYSSTAT_2583	0x91c /* Powerdown status USB/SATA/PCIe */

#define SYSCFG_2552	0x8A0 /* Reset Generator control 0 */
#define SYSCFG_1539	0x86c /* Softreset Ethernet 0 */
#define SYSCFG_510	0x7f8 /* Softreset Ethernet 1 */
#define LPM_SYSCFG_1	0x4 /* Softreset IRB */
#define SYSCFG_2553	0x8a4 /* Softreset SATA0/1, PCIE0/1 */
#define SYSCFG_7563	0x8cc /* MPE softresets 0 */
#define SYSCFG_7564	0x8d0 /* MPE softresets 1 */

#define STIH416_SRST_CPU(_reg, _bit) \
	 _SYSCFG_RST_CH_NO_ACK(stih416_cpu, _reg, _bit)

#define STIH416_SRST_FRONT(_reg, _bit) \
	 _SYSCFG_RST_CH_NO_ACK(stih416_front, _reg, _bit)

#define STIH416_SRST_REAR(_reg, _bit) \
	 _SYSCFG_RST_CH_NO_ACK(stih416_rear, _reg, _bit)

#define STIH416_SRST_LPM(_reg, _bit) \
	 _SYSCFG_RST_CH_NO_ACK(stih416_lpm, _reg, _bit)

#define STIH416_SRST_SBC(_reg, _bit) \
	 _SYSCFG_RST_CH_NO_ACK(stih416_sbc, _reg, _bit)

static const struct syscfg_reset_channel_data stih416_powerdowns[] = {
	[STIH416_EMISS_POWERDOWN]	= STIH416_PDN_FRONT(0),
	[STIH416_NAND_POWERDOWN]	= STIH416_PDN_FRONT(1),
	[STIH416_KEYSCAN_POWERDOWN]	= STIH416_PDN_FRONT(2),
	[STIH416_USB0_POWERDOWN]	= STIH416_PDN_REAR(0, 0),
	[STIH416_USB1_POWERDOWN]	= STIH416_PDN_REAR(1, 1),
	[STIH416_USB2_POWERDOWN]	= STIH416_PDN_REAR(2, 2),
	[STIH416_USB3_POWERDOWN]	= STIH416_PDN_REAR(6, 5),
	[STIH416_SATA0_POWERDOWN]	= STIH416_PDN_REAR(3, 3),
	[STIH416_SATA1_POWERDOWN]	= STIH416_PDN_REAR(4, 4),
	[STIH416_PCIE0_POWERDOWN]	= STIH416_PDN_REAR(7, 9),
	[STIH416_PCIE1_POWERDOWN]	= STIH416_PDN_REAR(5, 8),
};

static const struct syscfg_reset_channel_data stih416_softresets[] = {
	[STIH416_ETH0_SOFTRESET] = STIH416_SRST_FRONT(SYSCFG_1539, 0),
	[STIH416_ETH1_SOFTRESET] = STIH416_SRST_SBC(SYSCFG_510, 0),
	[STIH416_IRB_SOFTRESET]	 = STIH416_SRST_LPM(LPM_SYSCFG_1, 6),
	[STIH416_USB0_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 9),
	[STIH416_USB1_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 10),
	[STIH416_USB2_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 11),
	[STIH416_USB3_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 28),
	[STIH416_SATA0_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 7),
	[STIH416_SATA1_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 3),
	[STIH416_PCIE0_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 15),
	[STIH416_PCIE1_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 2),
	[STIH416_AUD_DAC_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 14),
	[STIH416_HDTVOUT_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 5),
	[STIH416_VTAC_M_RX_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 25),
	[STIH416_VTAC_A_RX_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 26),
	[STIH416_SYNC_HD_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 5),
	[STIH416_SYNC_SD_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 6),
	[STIH416_BLITTER_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 10),
	[STIH416_GPU_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 11),
	[STIH416_VTAC_M_TX_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 18),
	[STIH416_VTAC_A_TX_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 19),
	[STIH416_VTG_AUX_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 21),
	[STIH416_JPEG_DEC_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 23),
	[STIH416_HVA_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 2),
	[STIH416_COMPO_M_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 3),
	[STIH416_COMPO_A_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 4),
	[STIH416_VP8_DEC_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 10),
	[STIH416_VTG_MAIN_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 16),
	[STIH416_KEYSCAN_SOFTRESET] = STIH416_SRST_LPM(LPM_SYSCFG_1, 8),
};

static struct syscfg_reset_controller_data stih416_powerdown_controller = {
	.wait_for_ack	= true,
	.nr_channels	= ARRAY_SIZE(stih416_powerdowns),
	.channels	= stih416_powerdowns,
};

static struct syscfg_reset_controller_data stih416_softreset_controller = {
	.wait_for_ack = false,
	.active_low = true,
	.nr_channels = ARRAY_SIZE(stih416_softresets),
	.channels = stih416_softresets,
};

static struct of_device_id stih416_reset_match[] = {
	{ .compatible = "st,stih416-powerdown",
	  .data = &stih416_powerdown_controller, },
	{ .compatible = "st,stih416-softreset",
	  .data = &stih416_softreset_controller, },
	{},
};

static struct platform_driver stih416_reset_driver = {
	.probe = syscfg_reset_probe,
	.driver = {
		.name = "reset-stih416",
		.owner = THIS_MODULE,
		.of_match_table = stih416_reset_match,
	},
};

static int __init stih416_reset_init(void)
{
	return platform_driver_register(&stih416_reset_driver);
}
arch_initcall(stih416_reset_init);
Commit	Line	Data
d0ace0f6 SG	1	/*
	2	* Copyright (C) 2013 STMicroelectronics (R&D) Limited
	3	* Author: Stephen Gallimore <stephen.gallimore@st.com>
	4	* Author: Srinivas Kandagatla <srinivas.kandagatla@st.com>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*/
	11	#include <linux/module.h>
	12	#include <linux/of.h>
	13	#include <linux/of_platform.h>
	14	#include <linux/platform_device.h>
	15
	16	#include <dt-bindings/reset-controller/stih416-resets.h>
	17
	18	#include "reset-syscfg.h"
	19
	20	/*
	21	* STiH416 Peripheral powerdown definitions.
	22	*/
	23	static const char stih416_front[] = "st,stih416-front-syscfg";
	24	static const char stih416_rear[] = "st,stih416-rear-syscfg";
	25	static const char stih416_sbc[] = "st,stih416-sbc-syscfg";
	26	static const char stih416_lpm[] = "st,stih416-lpm-syscfg";
e9de6635	27	static const char stih416_cpu[] = "st,stih416-cpu-syscfg";
d0ace0f6 SG	28
	29	#define STIH416_PDN_FRONT(_bit) \
	30	_SYSCFG_RST_CH(stih416_front, SYSCFG_1500, _bit, SYSSTAT_1578, _bit)
	31
	32	#define STIH416_PDN_REAR(_cntl, _stat) \
	33	_SYSCFG_RST_CH(stih416_rear, SYSCFG_2525, _cntl, SYSSTAT_2583, _stat)
	34
	35	#define SYSCFG_1500 0x7d0 /* Powerdown request EMI/NAND/Keyscan */
	36	#define SYSSTAT_1578 0x908 /* Powerdown status EMI/NAND/Keyscan */
	37
	38	#define SYSCFG_2525 0x834 /* Powerdown request USB/SATA/PCIe */
	39	#define SYSSTAT_2583 0x91c /* Powerdown status USB/SATA/PCIe */
	40
e9de6635 SK	41	#define SYSCFG_2552 0x8A0 /* Reset Generator control 0 */
	42	#define SYSCFG_1539 0x86c /* Softreset Ethernet 0 */
	43	#define SYSCFG_510 0x7f8 /* Softreset Ethernet 1 */
	44	#define LPM_SYSCFG_1 0x4 /* Softreset IRB */
	45	#define SYSCFG_2553 0x8a4 /* Softreset SATA0/1, PCIE0/1 */
	46	#define SYSCFG_7563 0x8cc /* MPE softresets 0 */
	47	#define SYSCFG_7564 0x8d0 /* MPE softresets 1 */
	48
	49	#define STIH416_SRST_CPU(_reg, _bit) \
	50	_SYSCFG_RST_CH_NO_ACK(stih416_cpu, _reg, _bit)
	51
	52	#define STIH416_SRST_FRONT(_reg, _bit) \
	53	_SYSCFG_RST_CH_NO_ACK(stih416_front, _reg, _bit)
	54
	55	#define STIH416_SRST_REAR(_reg, _bit) \
	56	_SYSCFG_RST_CH_NO_ACK(stih416_rear, _reg, _bit)
	57
	58	#define STIH416_SRST_LPM(_reg, _bit) \
	59	_SYSCFG_RST_CH_NO_ACK(stih416_lpm, _reg, _bit)
	60
	61	#define STIH416_SRST_SBC(_reg, _bit) \
	62	_SYSCFG_RST_CH_NO_ACK(stih416_sbc, _reg, _bit)
	63
d0ace0f6 SG	64	static const struct syscfg_reset_channel_data stih416_powerdowns[] = {
	65	[STIH416_EMISS_POWERDOWN] = STIH416_PDN_FRONT(0),
	66	[STIH416_NAND_POWERDOWN] = STIH416_PDN_FRONT(1),
	67	[STIH416_KEYSCAN_POWERDOWN] = STIH416_PDN_FRONT(2),
	68	[STIH416_USB0_POWERDOWN] = STIH416_PDN_REAR(0, 0),
	69	[STIH416_USB1_POWERDOWN] = STIH416_PDN_REAR(1, 1),
	70	[STIH416_USB2_POWERDOWN] = STIH416_PDN_REAR(2, 2),
	71	[STIH416_USB3_POWERDOWN] = STIH416_PDN_REAR(6, 5),
	72	[STIH416_SATA0_POWERDOWN] = STIH416_PDN_REAR(3, 3),
	73	[STIH416_SATA1_POWERDOWN] = STIH416_PDN_REAR(4, 4),
	74	[STIH416_PCIE0_POWERDOWN] = STIH416_PDN_REAR(7, 9),
	75	[STIH416_PCIE1_POWERDOWN] = STIH416_PDN_REAR(5, 8),
	76	};
	77
e9de6635 SK	78	static const struct syscfg_reset_channel_data stih416_softresets[] = {
	79	[STIH416_ETH0_SOFTRESET] = STIH416_SRST_FRONT(SYSCFG_1539, 0),
	80	[STIH416_ETH1_SOFTRESET] = STIH416_SRST_SBC(SYSCFG_510, 0),
	81	[STIH416_IRB_SOFTRESET] = STIH416_SRST_LPM(LPM_SYSCFG_1, 6),
	82	[STIH416_USB0_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 9),
	83	[STIH416_USB1_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 10),
	84	[STIH416_USB2_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 11),
	85	[STIH416_USB3_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 28),
	86	[STIH416_SATA0_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 7),
	87	[STIH416_SATA1_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 3),
	88	[STIH416_PCIE0_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 15),
	89	[STIH416_PCIE1_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 2),
	90	[STIH416_AUD_DAC_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 14),
	91	[STIH416_HDTVOUT_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 5),
	92	[STIH416_VTAC_M_RX_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 25),
	93	[STIH416_VTAC_A_RX_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 26),
	94	[STIH416_SYNC_HD_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 5),
	95	[STIH416_SYNC_SD_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 6),
	96	[STIH416_BLITTER_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 10),
	97	[STIH416_GPU_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 11),
	98	[STIH416_VTAC_M_TX_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 18),
	99	[STIH416_VTAC_A_TX_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 19),
	100	[STIH416_VTG_AUX_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 21),
	101	[STIH416_JPEG_DEC_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 23),
	102	[STIH416_HVA_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 2),
	103	[STIH416_COMPO_M_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 3),
	104	[STIH416_COMPO_A_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 4),
	105	[STIH416_VP8_DEC_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 10),
	106	[STIH416_VTG_MAIN_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 16),
d6c057f3	107	[STIH416_KEYSCAN_SOFTRESET] = STIH416_SRST_LPM(LPM_SYSCFG_1, 8),
e9de6635 SK	108	};
e9de6635 SK	109
d0ace0f6 SG	110	static struct syscfg_reset_controller_data stih416_powerdown_controller = {
	111	.wait_for_ack = true,
	112	.nr_channels = ARRAY_SIZE(stih416_powerdowns),
	113	.channels = stih416_powerdowns,
	114	};
	115
e9de6635 SK	116	static struct syscfg_reset_controller_data stih416_softreset_controller = {
	117	.wait_for_ack = false,
	118	.active_low = true,
	119	.nr_channels = ARRAY_SIZE(stih416_softresets),
	120	.channels = stih416_softresets,
	121	};
	122
d0ace0f6 SG	123	static struct of_device_id stih416_reset_match[] = {
	124	{ .compatible = "st,stih416-powerdown",
	125	.data = &stih416_powerdown_controller, },
e9de6635 SK	126	{ .compatible = "st,stih416-softreset",
e9de6635 SK	127	.data = &stih416_softreset_controller, },
d0ace0f6 SG	128	{},
	129	};
	130
	131	static struct platform_driver stih416_reset_driver = {
	132	.probe = syscfg_reset_probe,
	133	.driver = {
	134	.name = "reset-stih416",
	135	.owner = THIS_MODULE,
	136	.of_match_table = stih416_reset_match,
	137	},
	138	};
	139
	140	static int __init stih416_reset_init(void)
	141	{
	142	return platform_driver_register(&stih416_reset_driver);
	143	}
	144	arch_initcall(stih416_reset_init);