pinctrl: intel: Add Intel Denverton pin controller support

This driver adds pinctrl/GPIO support for Intel Denverton SoC. The GPIO
controller is based on the same hardware design that is already used in
Intel Sunrisepoint so we leverage the core driver here.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

3 files changed, 311 insertions, 0 deletions

diff --git a/drivers/pinctrl/intel/Kconfig b/drivers/pinctrl/intel/Kconfig
index fc69a0ff37b5..9613c2a9e2b3 100644
--- a/drivers/pinctrl/intel/Kconfig
+++ b/drivers/pinctrl/intel/Kconfig
@@ -65,6 +65,14 @@ config PINCTRL_CANNONLAKE
 	  This pinctrl driver provides an interface that allows configuring
 	  of Intel Cannon Lake PCH pins and using them as GPIOs.
 
+config PINCTRL_DENVERTON
+	tristate "Intel Denverton pinctrl and GPIO driver"
+	depends on ACPI
+	select PINCTRL_INTEL
+	help
+	  This pinctrl driver provides an interface that allows configuring
+	  of Intel Denverton SoC pins and using them as GPIOs.
+
 config PINCTRL_GEMINILAKE
 	tristate "Intel Gemini Lake SoC pinctrl and GPIO driver"
 	depends on ACPI
diff --git a/drivers/pinctrl/intel/Makefile b/drivers/pinctrl/intel/Makefile
index 81df3cf408e3..d9b31f7e2b1b 100644
--- a/drivers/pinctrl/intel/Makefile
+++ b/drivers/pinctrl/intel/Makefile
@@ -6,5 +6,6 @@ obj-$(CONFIG_PINCTRL_MERRIFIELD)	+= pinctrl-merrifield.o
 obj-$(CONFIG_PINCTRL_INTEL)		+= pinctrl-intel.o
 obj-$(CONFIG_PINCTRL_BROXTON)		+= pinctrl-broxton.o
 obj-$(CONFIG_PINCTRL_CANNONLAKE)	+= pinctrl-cannonlake.o
+obj-$(CONFIG_PINCTRL_DENVERTON)		+= pinctrl-denverton.o
 obj-$(CONFIG_PINCTRL_GEMINILAKE)	+= pinctrl-geminilake.o
 obj-$(CONFIG_PINCTRL_SUNRISEPOINT)	+= pinctrl-sunrisepoint.o
diff --git a/drivers/pinctrl/intel/pinctrl-denverton.c b/drivers/pinctrl/intel/pinctrl-denverton.c
new file mode 100644
index 000000000000..4500880240f2
--- /dev/null
+++ b/drivers/pinctrl/intel/pinctrl-denverton.c
@@ -0,0 +1,302 @@
+/*
+ * 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, 1, 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");