[PATCH 2/2] ARM: dt: tegra: harmony: add regulators

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From: Laxman Dewangan <ldewangan@xxxxxxxxxx>

Harmony uses a TPS6586x regulator. Instantiate this, and hook up a
couple of fixed GPIO-controlled regulators too.

Based on Ventana regulator patch by Stephen Warren <swarren@xxxxxxxxxx>
and converted to Harmony.

[swarren: Remove board-harmony{-power.c,.h} now that they're unused.
 Fixed board-harmony-pcie.c to control the 1V5 GPIO using the regulator
 introduced in the .dts file rather than directly]

Signed-off-by: Laxman Dewangan <ldewangan@xxxxxxxxxx>
Signed-off-by: Stephen Warren <swarren@xxxxxxxxxx>
---
Note that this depends on a TPS6586x driver patch that I believe Mark
Brown will be placing into a branch for the Tegra tree to merge. Also,
I haven't boot-tested this, but I hope that Laxman will. If not, I will
once I get back from the conference.

 arch/arm/boot/dts/tegra20-harmony.dts     |  210 +++++++++++++++++++++++++++++
 arch/arm/mach-tegra/Makefile              |    1 -
 arch/arm/mach-tegra/board-dt-tegra20.c    |    9 +-
 arch/arm/mach-tegra/board-harmony-pcie.c  |   28 ++--
 arch/arm/mach-tegra/board-harmony-power.c |  144 --------------------
 arch/arm/mach-tegra/board-harmony.h       |   28 ----
 6 files changed, 227 insertions(+), 193 deletions(-)
 delete mode 100644 arch/arm/mach-tegra/board-harmony-power.c
 delete mode 100644 arch/arm/mach-tegra/board-harmony.h

diff --git a/arch/arm/boot/dts/tegra20-harmony.dts b/arch/arm/boot/dts/tegra20-harmony.dts
index f146dbf..0add02b 100644
--- a/arch/arm/boot/dts/tegra20-harmony.dts
+++ b/arch/arm/boot/dts/tegra20-harmony.dts
@@ -275,6 +275,152 @@
 	i2c@7000d000 {
 		status = "okay";
 		clock-frequency = <400000>;
+
+		pmic: tps6586x@34 {
+			compatible = "ti,tps6586x";
+			reg = <0x34>;
+			interrupts = <0 86 0x4>;
+
+			#gpio-cells = <2>;
+			gpio-controller;
+
+			sys-supply = <&vdd_5v0_reg>;
+			vin-sm0-supply = <&sys_reg>;
+			vin-sm1-supply = <&sys_reg>;
+			vin-sm2-supply = <&sys_reg>;
+			vinldo01-supply = <&sm2_reg>;
+			vinldo23-supply = <&sm2_reg>;
+			vinldo4-supply = <&sm2_reg>;
+			vinldo678-supply = <&sm2_reg>;
+			vinldo9-supply = <&sm2_reg>;
+
+			regulators {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				sys_reg: regulator@0 {
+					reg = <0>;
+					regulator-compatible = "sys";
+					regulator-name = "vdd_sys";
+					regulator-always-on;
+				};
+
+				regulator@1 {
+					reg = <1>;
+					regulator-compatible = "sm0";
+					regulator-name = "vdd_sm0,vdd_core";
+					regulator-min-microvolt = <1200000>;
+					regulator-max-microvolt = <1200000>;
+					regulator-always-on;
+				};
+
+				regulator@2 {
+					reg = <2>;
+					regulator-compatible = "sm1";
+					regulator-name = "vdd_sm1,vdd_cpu";
+					regulator-min-microvolt = <1000000>;
+					regulator-max-microvolt = <1000000>;
+					regulator-always-on;
+				};
+
+				sm2_reg: regulator@3 {
+					reg = <3>;
+					regulator-compatible = "sm2";
+					regulator-name = "vdd_sm2,vin_ldo*";
+					regulator-min-microvolt = <3700000>;
+					regulator-max-microvolt = <3700000>;
+					regulator-always-on;
+				};
+
+				/* LDO0 is not connected to anything */
+
+				regulator@5 {
+					reg = <5>;
+					regulator-compatible = "ldo1";
+					regulator-name = "vdd_ldo1,avdd_pll*";
+					regulator-min-microvolt = <1100000>;
+					regulator-max-microvolt = <1100000>;
+					regulator-always-on;
+				};
+
+				regulator@6 {
+					reg = <6>;
+					regulator-compatible = "ldo2";
+					regulator-name = "vdd_ldo2,vdd_rtc";
+					regulator-min-microvolt = <1200000>;
+					regulator-max-microvolt = <1200000>;
+				};
+
+				regulator@7 {
+					reg = <7>;
+					regulator-compatible = "ldo3";
+					regulator-name = "vdd_ldo3,avdd_usb*";
+					regulator-min-microvolt = <3300000>;
+					regulator-max-microvolt = <3300000>;
+					regulator-always-on;
+				};
+
+				regulator@8 {
+					reg = <8>;
+					regulator-compatible = "ldo4";
+					regulator-name = "vdd_ldo4,avdd_osc,vddio_sys";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+					regulator-always-on;
+				};
+
+				regulator@9 {
+					reg = <9>;
+					regulator-compatible = "ldo5";
+					regulator-name = "vdd_ldo5,vcore_mmc";
+					regulator-min-microvolt = <2850000>;
+					regulator-max-microvolt = <2850000>;
+					regulator-always-on;
+				};
+
+				regulator@10 {
+					reg = <10>;
+					regulator-compatible = "ldo6";
+					regulator-name = "vdd_ldo6,avdd_vdac";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+				};
+
+				regulator@11 {
+					reg = <11>;
+					regulator-compatible = "ldo7";
+					regulator-name = "vdd_ldo7,avdd_hdmi,vdd_fuse";
+					regulator-min-microvolt = <3300000>;
+					regulator-max-microvolt = <3300000>;
+				};
+
+				regulator@12 {
+					reg = <12>;
+					regulator-compatible = "ldo8";
+					regulator-name = "vdd_ldo8,avdd_hdmi_pll";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+				};
+
+				regulator@13 {
+					reg = <13>;
+					regulator-compatible = "ldo9";
+					regulator-name = "vdd_ldo9,avdd_2v85,vdd_ddr_rx";
+					regulator-min-microvolt = <2850000>;
+					regulator-max-microvolt = <2850000>;
+					regulator-always-on;
+				};
+
+				regulator@14 {
+					reg = <14>;
+					regulator-compatible = "ldo_rtc";
+					regulator-name = "vdd_rtc_out,vdd_cell";
+					regulator-min-microvolt = <3300000>;
+					regulator-max-microvolt = <3300000>;
+					regulator-always-on;
+				};
+			};
+		};
 	};
 
 	pmc {
@@ -310,6 +456,70 @@
 		bus-width = <8>;
 	};
 
+	regulators {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		vdd_5v0_reg: regulator@0 {
+			compatible = "regulator-fixed";
+			reg = <0>;
+			regulator-name = "vdd_5v0";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			regulator-always-on;
+		};
+
+		regulator@1 {
+			compatible = "regulator-fixed";
+			reg = <1>;
+			regulator-name = "vdd_1v5";
+			regulator-min-microvolt = <1500000>;
+			regulator-max-microvolt = <1500000>;
+			gpio = <&pmic 0 0>;
+		};
+
+		regulator@2 {
+			compatible = "regulator-fixed";
+			reg = <2>;
+			regulator-name = "vdd_1v2";
+			regulator-min-microvolt = <1200000>;
+			regulator-max-microvolt = <1200000>;
+			gpio = <&pmic 1 0>;
+			enable-active-high;
+		};
+
+		regulator@3 {
+			compatible = "regulator-fixed";
+			reg = <3>;
+			regulator-name = "vdd_1v05";
+			regulator-min-microvolt = <10500000>;
+			regulator-max-microvolt = <10500000>;
+			gpio = <&pmic 2 0>;
+			enable-active-high;
+		};
+
+		regulator@4 {
+			compatible = "regulator-fixed";
+			reg = <4>;
+			regulator-name = "vdd_pnl";
+			regulator-min-microvolt = <2800000>;
+			regulator-max-microvolt = <2800000>;
+			gpio = <&gpio 22 0>; /* gpio PC6 */
+			enable-active-high;
+		};
+
+		regulator@5 {
+			compatible = "regulator-fixed";
+			reg = <5>;
+			regulator-name = "vdd_bl";
+			regulator-min-microvolt = <2800000>;
+			regulator-max-microvolt = <2800000>;
+			gpio = <&gpio 176 0>; /* gpio PW0 */
+			enable-active-high;
+		};
+	};
+
 	sound {
 		compatible = "nvidia,tegra-audio-wm8903-harmony",
 			     "nvidia,tegra-audio-wm8903";
diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile
index 90a40c3..0e04bc4 100644
--- a/arch/arm/mach-tegra/Makefile
+++ b/arch/arm/mach-tegra/Makefile
@@ -29,6 +29,5 @@ obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= board-dt-tegra20.o
 obj-$(CONFIG_ARCH_TEGRA_3x_SOC)		+= board-dt-tegra30.o
 
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= board-harmony-pcie.o
-obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= board-harmony-power.o
 
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= board-paz00.o
diff --git a/arch/arm/mach-tegra/board-dt-tegra20.c b/arch/arm/mach-tegra/board-dt-tegra20.c
index 30f8036..adc6b98 100644
--- a/arch/arm/mach-tegra/board-dt-tegra20.c
+++ b/arch/arm/mach-tegra/board-dt-tegra20.c
@@ -44,7 +44,6 @@
 #include <mach/usb_phy.h>
 
 #include "board.h"
-#include "board-harmony.h"
 #include "clock.h"
 
 struct tegra_ehci_platform_data tegra_ehci1_pdata = {
@@ -134,15 +133,9 @@ static void __init trimslice_init(void)
 
 static void __init harmony_init(void)
 {
+#ifdef CONFIG_TEGRA_PCI
 	int ret;
 
-	ret = harmony_regulator_init();
-	if (ret) {
-		pr_err("harmony_regulator_init() failed: %d\n", ret);
-		return;
-	}
-
-#ifdef CONFIG_TEGRA_PCI
 	ret = harmony_pcie_init();
 	if (ret)
 		pr_err("harmony_pcie_init() failed: %d\n", ret);
diff --git a/arch/arm/mach-tegra/board-harmony-pcie.c b/arch/arm/mach-tegra/board-harmony-pcie.c
index e8c3fda..662fb20 100644
--- a/arch/arm/mach-tegra/board-harmony-pcie.c
+++ b/arch/arm/mach-tegra/board-harmony-pcie.c
@@ -23,26 +23,29 @@
 #include <asm/mach-types.h>
 
 #include "board.h"
-#include "board-harmony.h"
 
 #ifdef CONFIG_TEGRA_PCI
 
 int __init harmony_pcie_init(void)
 {
-	struct regulator *regulator = NULL;
+	struct regulator *regulator_1v5, *regulator_pex;
 	int err;
 
-	err = gpio_request(TEGRA_GPIO_EN_VDD_1V05_GPIO, "EN_VDD_1V05");
-	if (err)
-		return err;
+	regulator_1v5 = regulator_get(NULL, "vdd_1v5");
+	if (IS_ERR_OR_NULL(regulator_1v5)) {
+		err = PTR_ERR(regulator_1v5);
+		goto err_reg;
+	}
 
-	gpio_direction_output(TEGRA_GPIO_EN_VDD_1V05_GPIO, 1);
+	regulator_enable(regulator_1v5);
 
-	regulator = regulator_get(NULL, "pex_clk");
-	if (IS_ERR_OR_NULL(regulator))
+	regulator_pex = regulator_get(NULL, "pex_clk");
+	if (IS_ERR_OR_NULL(regulator_pex)) {
+		err = PTR_ERR(regulator_pex);
 		goto err_reg;
+	}
 
-	regulator_enable(regulator);
+	regulator_enable(regulator_pex);
 
 	err = tegra_pcie_init(true, true);
 	if (err)
@@ -51,10 +54,11 @@ int __init harmony_pcie_init(void)
 	return 0;
 
 err_pcie:
-	regulator_disable(regulator);
-	regulator_put(regulator);
+	regulator_disable(regulator_pex);
+	regulator_put(regulator_pex);
 err_reg:
-	gpio_free(TEGRA_GPIO_EN_VDD_1V05_GPIO);
+	regulator_disable(regulator_1v5);
+	regulator_put(regulator_1v5);
 
 	return err;
 }
diff --git a/arch/arm/mach-tegra/board-harmony-power.c b/arch/arm/mach-tegra/board-harmony-power.c
deleted file mode 100644
index 8f9cf77..0000000
--- a/arch/arm/mach-tegra/board-harmony-power.c
+++ /dev/null
@@ -1,144 +0,0 @@
-/*
- * Copyright (C) 2010 NVIDIA, Inc.
- *
- * 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.
- *
- * 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/i2c.h>
-#include <linux/platform_device.h>
-#include <linux/gpio.h>
-#include <linux/regulator/machine.h>
-#include <linux/regulator/fixed.h>
-#include <linux/mfd/tps6586x.h>
-#include <linux/of.h>
-#include <linux/of_i2c.h>
-
-#include <asm/mach-types.h>
-
-#include <mach/irqs.h>
-
-#include "board-harmony.h"
-
-static struct regulator_consumer_supply tps658621_ldo0_supply[] = {
-	REGULATOR_SUPPLY("pex_clk", NULL),
-};
-
-static struct regulator_init_data ldo0_data = {
-	.supply_regulator = "vdd_sm2",
-	.constraints = {
-		.name = "vdd_ldo0",
-		.min_uV = 3300 * 1000,
-		.max_uV = 3300 * 1000,
-		.valid_modes_mask = (REGULATOR_MODE_NORMAL |
-				     REGULATOR_MODE_STANDBY),
-		.valid_ops_mask = (REGULATOR_CHANGE_MODE |
-				   REGULATOR_CHANGE_STATUS |
-				   REGULATOR_CHANGE_VOLTAGE),
-		.apply_uV = 1,
-	},
-	.num_consumer_supplies = ARRAY_SIZE(tps658621_ldo0_supply),
-	.consumer_supplies = tps658621_ldo0_supply,
-};
-
-#define HARMONY_REGULATOR_INIT(_id, _name, _supply, _minmv, _maxmv, _on)\
-	static struct regulator_init_data _id##_data = {		\
-		.supply_regulator = _supply,				\
-		.constraints = {					\
-			.name = _name,					\
-			.min_uV = (_minmv)*1000,			\
-			.max_uV = (_maxmv)*1000,			\
-			.valid_modes_mask = (REGULATOR_MODE_NORMAL |	\
-					     REGULATOR_MODE_STANDBY),	\
-			.valid_ops_mask = (REGULATOR_CHANGE_MODE |	\
-					   REGULATOR_CHANGE_STATUS |	\
-					   REGULATOR_CHANGE_VOLTAGE),	\
-			.always_on = _on,				\
-		},							\
-	}
-
-HARMONY_REGULATOR_INIT(sm0,  "vdd_sm0",  "vdd_sys", 725, 1500, 1);
-HARMONY_REGULATOR_INIT(sm1,  "vdd_sm1",  "vdd_sys", 725, 1500, 1);
-HARMONY_REGULATOR_INIT(sm2,  "vdd_sm2",  "vdd_sys", 3000, 4550, 1);
-HARMONY_REGULATOR_INIT(ldo1, "vdd_ldo1", "vdd_sm2", 725, 1500, 1);
-HARMONY_REGULATOR_INIT(ldo2, "vdd_ldo2", "vdd_sm2", 725, 1500, 0);
-HARMONY_REGULATOR_INIT(ldo3, "vdd_ldo3", "vdd_sm2", 1250, 3300, 1);
-HARMONY_REGULATOR_INIT(ldo4, "vdd_ldo4", "vdd_sm2", 1700, 2475, 1);
-HARMONY_REGULATOR_INIT(ldo5, "vdd_ldo5", NULL,	    1250, 3300, 1);
-HARMONY_REGULATOR_INIT(ldo6, "vdd_ldo6", "vdd_sm2", 1250, 3300, 0);
-HARMONY_REGULATOR_INIT(ldo7, "vdd_ldo7", "vdd_sm2", 1250, 3300, 0);
-HARMONY_REGULATOR_INIT(ldo8, "vdd_ldo8", "vdd_sm2", 1250, 3300, 0);
-HARMONY_REGULATOR_INIT(ldo9, "vdd_ldo9", "vdd_sm2", 1250, 3300, 1);
-
-#define TPS_REG(_id, _data)			\
-	{					\
-		.id = TPS6586X_ID_##_id,	\
-		.name = "tps6586x-regulator",	\
-		.platform_data = _data,		\
-	}
-
-static struct tps6586x_subdev_info tps_devs[] = {
-	TPS_REG(SM_0, &sm0_data),
-	TPS_REG(SM_1, &sm1_data),
-	TPS_REG(SM_2, &sm2_data),
-	TPS_REG(LDO_0, &ldo0_data),
-	TPS_REG(LDO_1, &ldo1_data),
-	TPS_REG(LDO_2, &ldo2_data),
-	TPS_REG(LDO_3, &ldo3_data),
-	TPS_REG(LDO_4, &ldo4_data),
-	TPS_REG(LDO_5, &ldo5_data),
-	TPS_REG(LDO_6, &ldo6_data),
-	TPS_REG(LDO_7, &ldo7_data),
-	TPS_REG(LDO_8, &ldo8_data),
-	TPS_REG(LDO_9, &ldo9_data),
-};
-
-static struct tps6586x_platform_data tps_platform = {
-	.irq_base	= TEGRA_NR_IRQS,
-	.num_subdevs	= ARRAY_SIZE(tps_devs),
-	.subdevs	= tps_devs,
-	.gpio_base	= HARMONY_GPIO_TPS6586X(0),
-};
-
-static struct i2c_board_info __initdata harmony_regulators[] = {
-	{
-		I2C_BOARD_INFO("tps6586x", 0x34),
-		.irq		= INT_EXTERNAL_PMU,
-		.platform_data	= &tps_platform,
-	},
-};
-
-int __init harmony_regulator_init(void)
-{
-	struct device_node *np;
-	struct i2c_adapter *adapter;
-
-	regulator_register_always_on(0, "vdd_sys",
-		NULL, 0, 5000000);
-
-	np = of_find_node_by_path("/i2c@7000d000");
-	if (np == NULL) {
-		pr_err("Could not find device_node for DVC I2C\n");
-		return -ENODEV;
-	}
-
-	adapter = of_find_i2c_adapter_by_node(np);
-	if (!adapter) {
-		pr_err("Could not find i2c_adapter for DVC I2C\n");
-		return -ENODEV;
-	}
-
-	i2c_new_device(adapter, harmony_regulators);
-
-	return 0;
-}
diff --git a/arch/arm/mach-tegra/board-harmony.h b/arch/arm/mach-tegra/board-harmony.h
deleted file mode 100644
index 7ae87088..0000000
--- a/arch/arm/mach-tegra/board-harmony.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * arch/arm/mach-tegra/board-harmony.h
- *
- * Copyright (C) 2010 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#ifndef _MACH_TEGRA_BOARD_HARMONY_H
-#define _MACH_TEGRA_BOARD_HARMONY_H
-
-#include <mach/gpio-tegra.h>
-
-#define HARMONY_GPIO_TPS6586X(_x_)	(TEGRA_NR_GPIOS + (_x_))
-
-#define TEGRA_GPIO_EN_VDD_1V05_GPIO	HARMONY_GPIO_TPS6586X(2)
-
-int harmony_regulator_init(void);
-
-#endif
-- 
1.7.9.5

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