Enable Button LED of Redhookbay in Kernel 3.10

Enable Button LED of Redhookbay in Kernel 3.10

Note for EDISON: this could be re-used as a generic PWM driver.

Signed-off-by: Han, He <he.han@intel.com>

Author: hhan11-intel

arch/x86/include/asm/intel_mid_pwm.h

@@ -0,0 +1,30 @@
+#ifndef __INTEL_MID_PWM_H__
+#define __INTEL_MID_PWM_H__
+
+#define MAX_DUTYCYCLE_PERCENTAGE 100
+
+enum {
+	PWM_LED = 0,
+	PWM_VIBRATOR,
+	PWM_LCD_BACKLIGHT,
+	PWM_NUM,
+};
+
+struct intel_mid_pwm_device_data {
+	u16 reg_clkdiv0;
+	u16 reg_clkdiv1;
+	u16 reg_dutycyc;
+	u8 val_clkdiv0;
+	u8 val_clkdiv1;
+};
+
+struct intel_mid_pwm_platform_data {
+	int pwm_num;
+	struct intel_mid_pwm_device_data *ddata;
+	u16 reg_clksel;
+	u8 val_clksel;
+};
+
+int intel_mid_pwm(int id, int value);
+#endif
+

arch/x86/platform/intel-mid/device_libs/Makefile

@@ -14,6 +14,7 @@ obj-y += pci/
 obj-$(subst m,y,$(CONFIG_BATTERY_INTEL_MDF)) += platform_msic_battery.o
 obj-$(subst m,y,$(CONFIG_INTEL_MID_POWER_BUTTON)) += platform_msic_power_btn.o
 obj-$(subst m,y,$(CONFIG_GPIO_INTEL_PMIC)) += platform_pmic_gpio.o
+obj-$(subst m,y,$(CONFIG_MID_PWM)) += platform_mid_pwm.o
 obj-$(subst m,y,$(CONFIG_INTEL_MFLD_THERMAL)) += platform_msic_thermal.o
 obj-$(subst m,y,$(CONFIG_SENSORS_MID_VDD)) += platform_msic_vdd.o
 obj-$(subst m,y,$(CONFIG_SENSORS_MRFL_OCD)) += platform_mrfl_ocd.o

arch/x86/platform/intel-mid/device_libs/platform_mid_pwm.c

@@ -0,0 +1,127 @@
+/*
+ * platform_mid_pwm.c: mid_pwm platform data initilization file
+ *
+ * (C) Copyright 2008 Intel Corporation
+ * Author:
+ *
+ * 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; version 2
+ * of the License.
+ */
+
+#include <linux/input.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+#include <linux/lnw_gpio.h>
+
+#include <asm/intel-mid.h>
+#include <asm/intel_mid_pwm.h>
+#include <asm/intel_mid_remoteproc.h>
+
+#include "platform_mid_pwm.h"
+
+static struct intel_mid_pwm_device_data mfld_pwms[] = {
+	[PWM_LED] = {
+		.reg_clkdiv0 = 0x62,
+		.reg_clkdiv1 = 0x61,
+		.reg_dutycyc = 0x67,
+		.val_clkdiv1 = 0x00,
+		.val_clkdiv0 = 0x03,
+	},
+	[PWM_VIBRATOR] = {
+		.reg_clkdiv0 = 0x64,
+		.reg_clkdiv1 = 0x63,
+		.reg_dutycyc = 0x68,
+		.val_clkdiv1 = 0x00,
+		.val_clkdiv0 = 0x03,
+	},
+	[PWM_LCD_BACKLIGHT] = {
+		.reg_clkdiv0 = 0x66,
+		.reg_clkdiv1 = 0x65,
+		.reg_dutycyc = 0x69,
+		.val_clkdiv1 = 0x00,
+		.val_clkdiv0 = 0x03,
+	},
+};
+
+static struct intel_mid_pwm_device_data ctp_pwms[] = {
+	[PWM_LED] = {
+		.reg_clkdiv0 = 0x62,
+		.reg_clkdiv1 = 0x61,
+		.reg_dutycyc = 0x67,
+		.val_clkdiv1 = 0x00,
+		.val_clkdiv0 = 0x00,
+	},
+	[PWM_VIBRATOR] = {
+		.reg_clkdiv0 = 0x64,
+		.reg_clkdiv1 = 0x63,
+		.reg_dutycyc = 0x68,
+		.val_clkdiv1 = 0x00,
+		.val_clkdiv0 = 0x03,
+	},
+	[PWM_LCD_BACKLIGHT] = {
+		.reg_clkdiv0 = 0x66,
+		.reg_clkdiv1 = 0x65,
+		.reg_dutycyc = 0x69,
+		.val_clkdiv1 = 0x00,
+		.val_clkdiv0 = 0x03,
+	},
+};
+
+static struct intel_mid_pwm_platform_data pdata[] = {
+	[mfld_pwm] = {
+		.pwm_num = PWM_NUM,
+		.ddata = mfld_pwms,
+		.reg_clksel = 0x38F,
+		.val_clksel = 0x01,
+	},
+	[ctp_pwm] = {
+		.pwm_num = PWM_NUM,
+		.ddata = ctp_pwms,
+		.reg_clksel = 0x38F,
+		.val_clksel = 0x00,
+	},
+};
+
+static void *get_pwm_platform_data(void)
+{
+	if (INTEL_MID_BOARD(1, PHONE, CLVTP) ||
+		(INTEL_MID_BOARD(1, TABLET, CLVT))) {
+		pr_info("%s, CLV board detected\n", __func__);
+		return &pdata[ctp_pwm];
+	} else {
+		pr_info("%s, MFLD board detected\n", __func__);
+		return &pdata[mfld_pwm];
+	}
+}
+
+static int __init intel_mid_pwm_init(void)
+{
+	struct platform_device *pdev = NULL;
+	int ret = 0;
+
+	pdev = platform_device_alloc(DEVICE_NAME, -1);
+
+	if (!pdev) {
+		pr_err("out of memory for platform dev %s\n",
+					DEVICE_NAME);
+		return -1;
+	}
+
+	pdev->dev.platform_data = get_pwm_platform_data();
+
+	ret = platform_device_add(pdev);
+	if (ret) {
+		pr_err("failed to add platform device %s\n",
+					DEVICE_NAME);
+		platform_device_put(pdev);
+		return -1;
+	}
+
+	return 0;
+}
+
+fs_initcall(intel_mid_pwm_init);

arch/x86/platform/intel-mid/device_libs/platform_mid_pwm.h

@@ -0,0 +1,21 @@
+/*
+ * platform_mid_pwm.h: mid_pwm platform data header file
+ *
+ * (C) Copyright 2008 Intel Corporation
+ * Author:
+ *
+ * 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; version 2
+ * of the License.
+ */
+#ifndef _PLATFORM_MID_PWM_H_
+#define _PLATFORM_MID_PWM_H_
+
+#define DEVICE_NAME "intel_mid_pwm"
+
+enum {
+	mfld_pwm,
+	ctp_pwm,
+};
+#endif

arch/x86/platform/intel-mid/intel_mid_scu.c

@@ -79,7 +79,9 @@ int intel_mid_rproc_init(void)
 	register_rpmsg_service("rpmsg_kpd_led", RPROC_SCU,
 				RP_MSIC_KPD_LED);
 	register_rpmsg_service("rpmsg_modem_nvram", RPROC_SCU,
-					RP_IPC_SIMPLE_COMMAND);
+					RP_IPC_RAW_COMMAND);
+	register_rpmsg_service("rpmsg_mid_pwm", RPROC_SCU,
+				RP_MSIC_PWM);
 
 	err = platform_device_register(&intel_scu_device);
 	if (err < 0)