/*
 * Intel Denverton SoC pinctrl/GPIO driver
 *
 * Copyright (C) 2017, Intel Corporation
 * Author: Mika Westerberg <mika.westerberg@linux.intel.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/acpi.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/pinctrl/pinctrl.h>

#include "pinctrl-intel.h"

#define DNV_PAD_OWN	0x020
#define DNV_HOSTSW_OWN	0x0C0
#define DNV_PADCFGLOCK	0x090
#define DNV_GPI_IE	0x120

#define DNV_GPP(n, s, e)				\
	{						\
		.reg_num = (n),				\
		.base = (s),				\
		.size = ((e) - (s) + 1),		\
	}

#define DNV_COMMUNITY(b, s, e, g)			\
	{						\
		.barno = (b),				\
		.padown_offset = DNV_PAD_OWN,		\
		.padcfglock_offset = DNV_PADCFGLOCK,	\
		.hostown_offset = DNV_HOSTSW_OWN,	\
		.ie_offset = DNV_GPI_IE,		\
		.pin_base = (s),			\
		.npins = ((e) - (s) + 1),		\
		.gpps = (g),				\
		.ngpps = ARRAY_SIZE(g),			\
	}

static const struct pinctrl_pin_desc dnv_pins[] = {
	/* North ALL */
	PINCTRL_PIN(0, "GBE0_SDP0"),
	PINCTRL_PIN(1, "GBE1_SDP0"),
	PINCTRL_PIN(2, "GBE0_SDP1"),
	PINCTRL_PIN(3, "GBE1_SDP1"),
	PINCTRL_PIN(4, "GBE0_SDP2"),
	PINCTRL_PIN(5, "GBE1_SDP2"),
	PINCTRL_PIN(6, "GBE0_SDP3"),
	PINCTRL_PIN(7, "GBE1_SDP3"),
	PINCTRL_PIN(8, "GBE2_LED0"),
	PINCTRL_PIN(9, "GBE2_LED1"),
	PINCTRL_PIN(10, "GBE0_I2C_CLK"),
	PINCTRL_PIN(11, "GBE0_I2C_DATA"),
	PINCTRL_PIN(12, "GBE1_I2C_CLK"),
	PINCTRL_PIN(13, "GBE1_I2C_DATA"),
	PINCTRL_PIN(14, "NCSI_RXD0"),
	PINCTRL_PIN(15, "NCSI_CLK_IN"),
	PINCTRL_PIN(16, "NCSI_RXD1"),
	PINCTRL_PIN(17, "NCSI_CRS_DV"),
	PINCTRL_PIN(18, "NCSI_ARB_IN"),
	PINCTRL_PIN(19, "NCSI_TX_EN"),
	PINCTRL_PIN(20, "NCSI_TXD0"),
	PINCTRL_PIN(21, "NCSI_TXD1"),
	PINCTRL_PIN(22, "NCSI_ARB_OUT"),
	PINCTRL_PIN(23, "GBE0_LED0"),
	PINCTRL_PIN(24, "GBE0_LED1"),
	PINCTRL_PIN(25, "GBE1_LED0"),
	PINCTRL_PIN(26, "GBE1_LED1"),
	PINCTRL_PIN(27, "GPIO_0"),
	PINCTRL_PIN(28, "PCIE_CLKREQ0_N"),
	PINCTRL_PIN(29, "PCIE_CLKREQ1_N"),
	PINCTRL_PIN(30, "PCIE_CLKREQ2_N"),
	PINCTRL_PIN(31, "PCIE_CLKREQ3_N"),
	PINCTRL_PIN(32, "PCIE_CLKREQ4_N"),
	PINCTRL_PIN(33, "GPIO_1"),
	PINCTRL_PIN(34, "GPIO_2"),
	PINCTRL_PIN(35, "SVID_ALERT_N"),
	PINCTRL_PIN(36, "SVID_DATA"),
	PINCTRL_PIN(37, "SVID_CLK"),
	PINCTRL_PIN(38, "THERMTRIP_N"),
	PINCTRL_PIN(39, "PROCHOT_N"),
	PINCTRL_PIN(40, "MEMHOT_N"),
	/* South DFX */
	PINCTRL_PIN(41, "DFX_PORT_CLK0"),
	PINCTRL_PIN(42, "DFX_PORT_CLK1"),
	PINCTRL_PIN(43, "DFX_PORT0"),
	PINCTRL_PIN(44, "DFX_PORT1"),
	PINCTRL_PIN(45, "DFX_PORT2"),
	PINCTRL_PIN(46, "DFX_PORT3"),
	PINCTRL_PIN(47, "DFX_PORT4"),
	PINCTRL_PIN(48, "DFX_PORT5"),
	PINCTRL_PIN(49, "DFX_PORT6"),
	PINCTRL_PIN(50, "DFX_PORT7"),
	PINCTRL_PIN(51, "DFX_PORT8"),
	PINCTRL_PIN(52, "DFX_PORT9"),
	PINCTRL_PIN(53, "DFX_PORT10"),
	PINCTRL_PIN(54, "DFX_PORT11"),
	PINCTRL_PIN(55, "DFX_PORT12"),
	PINCTRL_PIN(56, "DFX_PORT13"),
	PINCTRL_PIN(57, "DFX_PORT14"),
	PINCTRL_PIN(58, "DFX_PORT15"),
	/* South GPP0 */
	PINCTRL_PIN(59, "GPIO_12"),
	PINCTRL_PIN(60, "SMB5_GBE_ALRT_N"),
	PINCTRL_PIN(61, "PCIE_CLKREQ5_N"),
	PINCTRL_PIN(62, "PCIE_CLKREQ6_N"),
	PINCTRL_PIN(63, "PCIE_CLKREQ7_N"),
	PINCTRL_PIN(64, "UART0_RXD"),
	PINCTRL_PIN(65, "UART0_TXD"),
	PINCTRL_PIN(66, "SMB5_GBE_CLK"),
	PINCTRL_PIN(67, "SMB5_GBE_DATA"),
	PINCTRL_PIN(68, "ERROR2_N"),
	PINCTRL_PIN(69, "ERROR1_N"),
	PINCTRL_PIN(70, "ERROR0_N"),
	PINCTRL_PIN(71, "IERR_N"),
	PINCTRL_PIN(72, "MCERR_N"),
	PINCTRL_PIN(73, "SMB0_LEG_CLK"),
	PINCTRL_PIN(74, "SMB0_LEG_DATA"),
	PINCTRL_PIN(75, "SMB0_LEG_ALRT_N"),
	PINCTRL_PIN(76, "SMB1_HOST_DATA"),
	PINCTRL_PIN(77, "SMB1_HOST_CLK"),
	PINCTRL_PIN(78, "SMB2_PECI_DATA"),
	PINCTRL_PIN(79, "SMB2_PECI_CLK"),
	PINCTRL_PIN(80, "SMB4_CSME0_DATA"),
	PINCTRL_PIN(81, "SMB4_CSME0_CLK"),
	PINCTRL_PIN(82, "SMB4_CSME0_ALRT_N"),
	PINCTRL_PIN(83, "USB_OC0_N"),
	PINCTRL_PIN(84, "FLEX_CLK_SE0"),
	PINCTRL_PIN(85, "FLEX_CLK_SE1"),
	PINCTRL_PIN(86, "GPIO_4"),
	PINCTRL_PIN(87, "GPIO_5"),
	PINCTRL_PIN(88, "GPIO_6"),
	PINCTRL_PIN(89, "GPIO_7"),
	PINCTRL_PIN(90, "SATA0_LED_N"),
	PINCTRL_PIN(91, "SATA1_LED_N"),
	PINCTRL_PIN(92, "SATA_PDETECT0"),
	PINCTRL_PIN(93, "SATA_PDETECT1"),
	PINCTRL_PIN(94, "SATA0_SDOUT"),
	PINCTRL_PIN(95, "SATA1_SDOUT"),
	PINCTRL_PIN(96, "UART1_RXD"),
	PINCTRL_PIN(97, "UART1_TXD"),
	PINCTRL_PIN(98, "GPIO_8"),
	PINCTRL_PIN(99, "GPIO_9"),
	PINCTRL_PIN(100, "TCK"),
	PINCTRL_PIN(101, "TRST_N"),
	PINCTRL_PIN(102, "TMS"),
	PINCTRL_PIN(103, "TDI"),
	PINCTRL_PIN(104, "TDO"),
	PINCTRL_PIN(105, "CX_PRDY_N"),
	PINCTRL_PIN(106, "CX_PREQ_N"),
	PINCTRL_PIN(107, "CTBTRIGINOUT"),
	PINCTRL_PIN(108, "CTBTRIGOUT"),
	PINCTRL_PIN(109, "DFX_SPARE2"),
	PINCTRL_PIN(110, "DFX_SPARE3"),
	PINCTRL_PIN(111, "DFX_SPARE4"),
	/* South GPP1 */
	PINCTRL_PIN(112, "SUSPWRDNACK"),
	PINCTRL_PIN(113, "PMU_SUSCLK"),
	PINCTRL_PIN(114, "ADR_TRIGGER"),
	PINCTRL_PIN(115, "PMU_SLP_S45_N"),
	PINCTRL_PIN(116, "PMU_SLP_S3_N"),
	PINCTRL_PIN(117, "PMU_WAKE_N"),
	PINCTRL_PIN(118, "PMU_PWRBTN_N"),
	PINCTRL_PIN(119, "PMU_RESETBUTTON_N"),
	PINCTRL_PIN(120, "PMU_PLTRST_N"),
	PINCTRL_PIN(121, "SUS_STAT_N"),
	PINCTRL_PIN(122, "SLP_S0IX_N"),
	PINCTRL_PIN(123, "SPI_CS0_N"),
	PINCTRL_PIN(124, "SPI_CS1_N"),
	PINCTRL_PIN(125, "SPI_MOSI_IO0"),
	PINCTRL_PIN(126, "SPI_MISO_IO1"),
	PINCTRL_PIN(127, "SPI_IO2"),
	PINCTRL_PIN(128, "SPI_IO3"),
	PINCTRL_PIN(129, "SPI_CLK"),
	PINCTRL_PIN(130, "SPI_CLK_LOOPBK"),
	PINCTRL_PIN(131, "ESPI_IO0"),
	PINCTRL_PIN(132, "ESPI_IO1"),
	PINCTRL_PIN(133, "ESPI_IO2"),
	PINCTRL_PIN(134, "ESPI_IO3"),
	PINCTRL_PIN(135, "ESPI_CS0_N"),
	PINCTRL_PIN(136, "ESPI_CLK"),
	PINCTRL_PIN(137, "ESPI_RST_N"),
	PINCTRL_PIN(138, "ESPI_ALRT0_N"),
	PINCTRL_PIN(139, "GPIO_10"),
	PINCTRL_PIN(140, "GPIO_11"),
	PINCTRL_PIN(141, "ESPI_CLK_LOOPBK"),
	PINCTRL_PIN(142, "EMMC_CMD"),
	PINCTRL_PIN(143, "EMMC_STROBE"),
	PINCTRL_PIN(144, "EMMC_CLK"),
	PINCTRL_PIN(145, "EMMC_D0"),
	PINCTRL_PIN(146, "EMMC_D1"),
	PINCTRL_PIN(147, "EMMC_D2"),
	PINCTRL_PIN(148, "EMMC_D3"),
	PINCTRL_PIN(149, "EMMC_D4"),
	PINCTRL_PIN(150, "EMMC_D5"),
	PINCTRL_PIN(151, "EMMC_D6"),
	PINCTRL_PIN(152, "EMMC_D7"),
	PINCTRL_PIN(153, "GPIO_3"),
};

static const unsigned int dnv_uart0_pins[] = { 60, 61, 64, 65 };
static const unsigned int dnv_uart0_modes[] = { 2, 3, 1, 1 };
static const unsigned int dnv_uart1_pins[] = { 94, 95, 96, 97 };
static const unsigned int dnv_uart2_pins[] = { 60, 61, 62, 63 };
static const unsigned int dnv_uart2_modes[] = { 1, 2, 2, 2 };
static const unsigned int dnv_emmc_pins[] = {
	142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152,
};

static const struct intel_pingroup dnv_groups[] = {
	PIN_GROUP("uart0_grp", dnv_uart0_pins, dnv_uart0_modes),
	PIN_GROUP("uart1_grp", dnv_uart1_pins, 1),
	PIN_GROUP("uart2_grp", dnv_uart2_pins, dnv_uart2_modes),
	PIN_GROUP("emmc_grp", dnv_emmc_pins, 1),
};

static const char * const dnv_uart0_groups[] = { "uart0_grp" };
static const char * const dnv_uart1_groups[] = { "uart1_grp" };
static const char * const dnv_uart2_groups[] = { "uart2_grp" };
static const char * const dnv_emmc_groups[] = { "emmc_grp" };

static const struct intel_function dnv_functions[] = {
	FUNCTION("uart0", dnv_uart0_groups),
	FUNCTION("uart1", dnv_uart1_groups),
	FUNCTION("uart2", dnv_uart2_groups),
	FUNCTION("emmc", dnv_emmc_groups),
};

static const struct intel_padgroup dnv_north_gpps[] = {
	DNV_GPP(0, 0, 31),	/* North ALL_0 */
	DNV_GPP(1, 32, 40),	/* North ALL_1 */
};

static const struct intel_padgroup dnv_south_gpps[] = {
	DNV_GPP(0, 41, 58),	/* South DFX */
	DNV_GPP(1, 59, 90),	/* South GPP0_0 */
	DNV_GPP(2, 91, 111),	/* South GPP0_1 */
	DNV_GPP(3, 112, 143),	/* South GPP1_0 */
	DNV_GPP(4, 144, 153),	/* South GPP1_1 */
};

static const struct intel_community dnv_communities[] = {
	DNV_COMMUNITY(0, 0, 40, dnv_north_gpps),
	DNV_COMMUNITY(1, 41, 153, dnv_south_gpps),
};

static const struct intel_pinctrl_soc_data dnv_soc_data = {
	.pins = dnv_pins,
	.npins = ARRAY_SIZE(dnv_pins),
	.groups = dnv_groups,
	.ngroups = ARRAY_SIZE(dnv_groups),
	.functions = dnv_functions,
	.nfunctions = ARRAY_SIZE(dnv_functions),
	.communities = dnv_communities,
	.ncommunities = ARRAY_SIZE(dnv_communities),
};

static int dnv_pinctrl_probe(struct platform_device *pdev)
{
	return intel_pinctrl_probe(pdev, &dnv_soc_data);
}

static const struct dev_pm_ops dnv_pinctrl_pm_ops = {
	SET_LATE_SYSTEM_SLEEP_PM_OPS(intel_pinctrl_suspend,
				     intel_pinctrl_resume)
};

static const struct acpi_device_id dnv_pinctrl_acpi_match[] = {
	{ "INTC3000" },
	{ }
};
MODULE_DEVICE_TABLE(acpi, dnv_pinctrl_acpi_match);

static struct platform_driver dnv_pinctrl_driver = {
	.probe = dnv_pinctrl_probe,
	.driver = {
		.name = "denverton-pinctrl",
		.acpi_match_table = dnv_pinctrl_acpi_match,
		.pm = &dnv_pinctrl_pm_ops,
	},
};

static int __init dnv_pinctrl_init(void)
{
	return platform_driver_register(&dnv_pinctrl_driver);
}
subsys_initcall(dnv_pinctrl_init);

static void __exit dnv_pinctrl_exit(void)
{
	platform_driver_unregister(&dnv_pinctrl_driver);
}
module_exit(dnv_pinctrl_exit);

MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
MODULE_DESCRIPTION("Intel Denverton SoC pinctrl/GPIO driver");
MODULE_LICENSE("GPL v2");