leds: Add mc13783 LED support
This add basic led support for Freescale MC13783 PMIC. Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
This commit is contained in:
Philippe Rétornaz
Richard Purdie
Родитель
1e653accf7
Коммит
7fdcef8a41
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@ -295,6 +295,13 @@ config LEDS_DELL_NETBOOKS
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This adds support for the Latitude 2100 and similar
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notebooks that have an external LED.
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config LEDS_MC13783
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tristate "LED Support for MC13783 PMIC"
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depends on MFD_MC13783
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help
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This option enable support for on-chip LED drivers found
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on Freescale Semiconductor MC13783 PMIC.
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config LEDS_TRIGGERS
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bool "LED Trigger support"
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help
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@ -36,6 +36,7 @@ obj-$(CONFIG_LEDS_INTEL_SS4200) += leds-ss4200.o
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obj-$(CONFIG_LEDS_LT3593) += leds-lt3593.o
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obj-$(CONFIG_LEDS_ADP5520) += leds-adp5520.o
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obj-$(CONFIG_LEDS_DELL_NETBOOKS) += dell-led.o
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obj-$(CONFIG_LEDS_MC13783) += leds-mc13783.o
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# LED SPI Drivers
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obj-$(CONFIG_LEDS_DAC124S085) += leds-dac124s085.o
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@ -0,0 +1,403 @@
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/*
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* LEDs driver for Freescale MC13783
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*
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* Copyright (C) 2010 Philippe Rétornaz
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*
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* Based on leds-da903x:
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* Copyright (C) 2008 Compulab, Ltd.
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* Mike Rapoport <mike@compulab.co.il>
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*
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* Copyright (C) 2006-2008 Marvell International Ltd.
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* Eric Miao <eric.miao@marvell.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/leds.h>
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#include <linux/workqueue.h>
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#include <linux/mfd/mc13783.h>
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#include <linux/slab.h>
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struct mc13783_led {
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struct led_classdev cdev;
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struct work_struct work;
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struct mc13783 *master;
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enum led_brightness new_brightness;
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int id;
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};
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#define MC13783_REG_LED_CONTROL_0 51
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#define MC13783_LED_C0_ENABLE_BIT (1 << 0)
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#define MC13783_LED_C0_TRIODE_MD_BIT (1 << 7)
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#define MC13783_LED_C0_TRIODE_AD_BIT (1 << 8)
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#define MC13783_LED_C0_TRIODE_KP_BIT (1 << 9)
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#define MC13783_LED_C0_BOOST_BIT (1 << 10)
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#define MC13783_LED_C0_ABMODE_MASK 0x7
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#define MC13783_LED_C0_ABMODE 11
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#define MC13783_LED_C0_ABREF_MASK 0x3
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#define MC13783_LED_C0_ABREF 14
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#define MC13783_REG_LED_CONTROL_1 52
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#define MC13783_LED_C1_TC1HALF_BIT (1 << 18)
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#define MC13783_REG_LED_CONTROL_2 53
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#define MC13783_LED_C2_BL_P_MASK 0xf
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#define MC13783_LED_C2_MD_P 9
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#define MC13783_LED_C2_AD_P 13
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#define MC13783_LED_C2_KP_P 17
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#define MC13783_LED_C2_BL_C_MASK 0x7
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#define MC13783_LED_C2_MD_C 0
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#define MC13783_LED_C2_AD_C 3
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#define MC13783_LED_C2_KP_C 6
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#define MC13783_REG_LED_CONTROL_3 54
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#define MC13783_LED_C3_TC_P 6
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#define MC13783_LED_C3_TC_P_MASK 0x1f
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#define MC13783_REG_LED_CONTROL_4 55
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#define MC13783_REG_LED_CONTROL_5 56
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#define MC13783_LED_Cx_PERIOD 21
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#define MC13783_LED_Cx_PERIOD_MASK 0x3
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#define MC13783_LED_Cx_SLEWLIM_BIT (1 << 23)
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#define MC13783_LED_Cx_TRIODE_TC_BIT (1 << 23)
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#define MC13783_LED_Cx_TC_C_MASK 0x3
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static void mc13783_led_work(struct work_struct *work)
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{
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struct mc13783_led *led = container_of(work, struct mc13783_led, work);
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int reg = 0;
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int mask = 0;
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int value = 0;
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int bank, off, shift;
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switch (led->id) {
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case MC13783_LED_MD:
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reg = MC13783_REG_LED_CONTROL_2;
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mask = MC13783_LED_C2_BL_P_MASK << MC13783_LED_C2_MD_P;
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value = (led->new_brightness >> 4) << MC13783_LED_C2_MD_P;
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break;
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case MC13783_LED_AD:
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reg = MC13783_REG_LED_CONTROL_2;
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mask = MC13783_LED_C2_BL_P_MASK << MC13783_LED_C2_AD_P;
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value = (led->new_brightness >> 4) << MC13783_LED_C2_AD_P;
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break;
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case MC13783_LED_KP:
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reg = MC13783_REG_LED_CONTROL_2;
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mask = MC13783_LED_C2_BL_P_MASK << MC13783_LED_C2_KP_P;
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value = (led->new_brightness >> 4) << MC13783_LED_C2_KP_P;
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break;
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case MC13783_LED_R1:
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case MC13783_LED_G1:
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case MC13783_LED_B1:
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case MC13783_LED_R2:
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case MC13783_LED_G2:
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case MC13783_LED_B2:
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case MC13783_LED_R3:
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case MC13783_LED_G3:
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case MC13783_LED_B3:
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off = led->id - MC13783_LED_R1;
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bank = off/3;
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reg = MC13783_REG_LED_CONTROL_3 + off/3;
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shift = (off - bank * 3) * 5 + MC13783_LED_C3_TC_P;
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value = (led->new_brightness >> 3) << shift;
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mask = MC13783_LED_C3_TC_P_MASK << shift;
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break;
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}
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mc13783_lock(led->master);
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mc13783_reg_rmw(led->master, reg, mask, value);
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mc13783_unlock(led->master);
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}
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static void mc13783_led_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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struct mc13783_led *led;
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led = container_of(led_cdev, struct mc13783_led, cdev);
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led->new_brightness = value;
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schedule_work(&led->work);
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}
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static int __devinit mc13783_led_setup(struct mc13783_led *led, int max_current)
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{
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int shift = 0;
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int mask = 0;
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int value = 0;
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int reg = 0;
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int ret, bank;
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switch (led->id) {
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case MC13783_LED_MD:
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shift = MC13783_LED_C2_MD_C;
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mask = MC13783_LED_C2_BL_C_MASK;
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value = max_current & MC13783_LED_C2_BL_C_MASK;
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reg = MC13783_REG_LED_CONTROL_2;
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break;
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case MC13783_LED_AD:
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shift = MC13783_LED_C2_AD_C;
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mask = MC13783_LED_C2_BL_C_MASK;
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value = max_current & MC13783_LED_C2_BL_C_MASK;
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reg = MC13783_REG_LED_CONTROL_2;
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break;
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case MC13783_LED_KP:
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shift = MC13783_LED_C2_KP_C;
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mask = MC13783_LED_C2_BL_C_MASK;
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value = max_current & MC13783_LED_C2_BL_C_MASK;
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reg = MC13783_REG_LED_CONTROL_2;
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break;
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case MC13783_LED_R1:
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case MC13783_LED_G1:
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case MC13783_LED_B1:
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case MC13783_LED_R2:
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case MC13783_LED_G2:
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case MC13783_LED_B2:
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case MC13783_LED_R3:
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case MC13783_LED_G3:
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case MC13783_LED_B3:
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bank = (led->id - MC13783_LED_R1)/3;
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reg = MC13783_REG_LED_CONTROL_3 + bank;
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shift = ((led->id - MC13783_LED_R1) - bank * 3) * 2;
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mask = MC13783_LED_Cx_TC_C_MASK;
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value = max_current & MC13783_LED_Cx_TC_C_MASK;
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break;
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}
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mc13783_lock(led->master);
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ret = mc13783_reg_rmw(led->master, reg, mask << shift,
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value << shift);
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mc13783_unlock(led->master);
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return ret;
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}
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static int __devinit mc13783_leds_prepare(struct platform_device *pdev)
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{
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struct mc13783_leds_platform_data *pdata = dev_get_platdata(&pdev->dev);
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struct mc13783 *dev = dev_get_drvdata(pdev->dev.parent);
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int ret = 0;
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int reg = 0;
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mc13783_lock(dev);
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if (pdata->flags & MC13783_LED_TC1HALF)
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reg |= MC13783_LED_C1_TC1HALF_BIT;
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if (pdata->flags & MC13783_LED_SLEWLIMTC)
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reg |= MC13783_LED_Cx_SLEWLIM_BIT;
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ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_1, reg);
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if (ret)
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goto out;
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reg = (pdata->bl_period & MC13783_LED_Cx_PERIOD_MASK) <<
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MC13783_LED_Cx_PERIOD;
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if (pdata->flags & MC13783_LED_SLEWLIMBL)
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reg |= MC13783_LED_Cx_SLEWLIM_BIT;
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ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_2, reg);
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if (ret)
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goto out;
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reg = (pdata->tc1_period & MC13783_LED_Cx_PERIOD_MASK) <<
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MC13783_LED_Cx_PERIOD;
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if (pdata->flags & MC13783_LED_TRIODE_TC1)
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reg |= MC13783_LED_Cx_TRIODE_TC_BIT;
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ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_3, reg);
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if (ret)
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goto out;
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reg = (pdata->tc2_period & MC13783_LED_Cx_PERIOD_MASK) <<
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MC13783_LED_Cx_PERIOD;
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if (pdata->flags & MC13783_LED_TRIODE_TC2)
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reg |= MC13783_LED_Cx_TRIODE_TC_BIT;
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ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_4, reg);
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if (ret)
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goto out;
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reg = (pdata->tc3_period & MC13783_LED_Cx_PERIOD_MASK) <<
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MC13783_LED_Cx_PERIOD;
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if (pdata->flags & MC13783_LED_TRIODE_TC3)
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reg |= MC13783_LED_Cx_TRIODE_TC_BIT;;
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ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_5, reg);
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if (ret)
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goto out;
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reg = MC13783_LED_C0_ENABLE_BIT;
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if (pdata->flags & MC13783_LED_TRIODE_MD)
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reg |= MC13783_LED_C0_TRIODE_MD_BIT;
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if (pdata->flags & MC13783_LED_TRIODE_AD)
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reg |= MC13783_LED_C0_TRIODE_AD_BIT;
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if (pdata->flags & MC13783_LED_TRIODE_KP)
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reg |= MC13783_LED_C0_TRIODE_KP_BIT;
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if (pdata->flags & MC13783_LED_BOOST_EN)
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reg |= MC13783_LED_C0_BOOST_BIT;
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reg |= (pdata->abmode & MC13783_LED_C0_ABMODE_MASK) <<
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MC13783_LED_C0_ABMODE;
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reg |= (pdata->abref & MC13783_LED_C0_ABREF_MASK) <<
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MC13783_LED_C0_ABREF;
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ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_0, reg);
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out:
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mc13783_unlock(dev);
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return ret;
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}
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static int __devinit mc13783_led_probe(struct platform_device *pdev)
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{
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struct mc13783_leds_platform_data *pdata = dev_get_platdata(&pdev->dev);
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struct mc13783_led_platform_data *led_cur;
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struct mc13783_led *led, *led_dat;
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int ret, i;
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int init_led = 0;
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if (pdata == NULL) {
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dev_err(&pdev->dev, "missing platform data\n");
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return -ENODEV;
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}
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if (pdata->num_leds < 1 || pdata->num_leds > MC13783_LED_MAX) {
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dev_err(&pdev->dev, "Invalid led count %d\n", pdata->num_leds);
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return -EINVAL;
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}
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led = kzalloc(sizeof(*led) * pdata->num_leds, GFP_KERNEL);
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if (led == NULL) {
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dev_err(&pdev->dev, "failed to alloc memory\n");
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return -ENOMEM;
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}
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ret = mc13783_leds_prepare(pdev);
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if (ret) {
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dev_err(&pdev->dev, "unable to init led driver\n");
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goto err_free;
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}
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for (i = 0; i < pdata->num_leds; i++) {
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led_dat = &led[i];
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led_cur = &pdata->led[i];
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if (led_cur->id > MC13783_LED_MAX || led_cur->id < 0) {
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dev_err(&pdev->dev, "invalid id %d\n", led_cur->id);
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ret = -EINVAL;
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goto err_register;
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}
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if (init_led & (1 << led_cur->id)) {
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dev_err(&pdev->dev, "led %d already initialized\n",
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led_cur->id);
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ret = -EINVAL;
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goto err_register;
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}
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init_led |= 1 << led_cur->id;
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led_dat->cdev.name = led_cur->name;
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led_dat->cdev.default_trigger = led_cur->default_trigger;
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led_dat->cdev.brightness_set = mc13783_led_set;
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led_dat->cdev.brightness = LED_OFF;
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led_dat->id = led_cur->id;
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led_dat->master = dev_get_drvdata(pdev->dev.parent);
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INIT_WORK(&led_dat->work, mc13783_led_work);
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ret = led_classdev_register(pdev->dev.parent, &led_dat->cdev);
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if (ret) {
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dev_err(&pdev->dev, "failed to register led %d\n",
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led_dat->id);
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goto err_register;
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}
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ret = mc13783_led_setup(led_dat, led_cur->max_current);
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if (ret) {
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dev_err(&pdev->dev, "unable to init led %d\n",
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led_dat->id);
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i++;
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goto err_register;
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}
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}
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platform_set_drvdata(pdev, led);
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return 0;
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err_register:
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for (i = i - 1; i >= 0; i--) {
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led_classdev_unregister(&led[i].cdev);
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cancel_work_sync(&led[i].work);
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}
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||||
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err_free:
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||||
kfree(led);
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||||
return ret;
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||||
}
|
||||
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static int __devexit mc13783_led_remove(struct platform_device *pdev)
|
||||
{
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struct mc13783_leds_platform_data *pdata = dev_get_platdata(&pdev->dev);
|
||||
struct mc13783_led *led = platform_get_drvdata(pdev);
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||||
struct mc13783 *dev = dev_get_drvdata(pdev->dev.parent);
|
||||
int i;
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||||
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for (i = 0; i < pdata->num_leds; i++) {
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led_classdev_unregister(&led[i].cdev);
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||||
cancel_work_sync(&led[i].work);
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||||
}
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||||
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mc13783_lock(dev);
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||||
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mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_0, 0);
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mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_1, 0);
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mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_2, 0);
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mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_3, 0);
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mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_4, 0);
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mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_5, 0);
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||||
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||||
mc13783_unlock(dev);
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||||
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||||
kfree(led);
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||||
return 0;
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||||
}
|
||||
|
||||
static struct platform_driver mc13783_led_driver = {
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||||
.driver = {
|
||||
.name = "mc13783-led",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = mc13783_led_probe,
|
||||
.remove = __devexit_p(mc13783_led_remove),
|
||||
};
|
||||
|
||||
static int __init mc13783_led_init(void)
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||||
{
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||||
return platform_driver_register(&mc13783_led_driver);
|
||||
}
|
||||
module_init(mc13783_led_init);
|
||||
|
||||
static void __exit mc13783_led_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&mc13783_led_driver);
|
||||
}
|
||||
module_exit(mc13783_led_exit);
|
||||
|
||||
MODULE_DESCRIPTION("LEDs driver for Freescale MC13783 PMIC");
|
||||
MODULE_AUTHOR("Philippe Retornaz <philippe.retornaz@epfl.ch>");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS("platform:mc13783-led");
|
||||
|
|
@ -679,6 +679,10 @@ err_revision:
|
|||
if (pdata->flags & MC13783_USE_TOUCHSCREEN)
|
||||
mc13783_add_subdevice(mc13783, "mc13783-ts");
|
||||
|
||||
if (pdata->flags & MC13783_USE_LED)
|
||||
mc13783_add_subdevice_pdata(mc13783, "mc13783-led",
|
||||
pdata->leds, sizeof(*pdata->leds));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -64,6 +64,70 @@ static inline int mc13783_ackirq(struct mc13783 *mc13783, int irq)
|
|||
MC13783_ADC0_TSMOD1 | \
|
||||
MC13783_ADC0_TSMOD2)
|
||||
|
||||
struct mc13783_led_platform_data {
|
||||
#define MC13783_LED_MD 0
|
||||
#define MC13783_LED_AD 1
|
||||
#define MC13783_LED_KP 2
|
||||
#define MC13783_LED_R1 3
|
||||
#define MC13783_LED_G1 4
|
||||
#define MC13783_LED_B1 5
|
||||
#define MC13783_LED_R2 6
|
||||
#define MC13783_LED_G2 7
|
||||
#define MC13783_LED_B2 8
|
||||
#define MC13783_LED_R3 9
|
||||
#define MC13783_LED_G3 10
|
||||
#define MC13783_LED_B3 11
|
||||
#define MC13783_LED_MAX MC13783_LED_B3
|
||||
int id;
|
||||
const char *name;
|
||||
const char *default_trigger;
|
||||
|
||||
/* Three or two bits current selection depending on the led */
|
||||
char max_current;
|
||||
};
|
||||
|
||||
struct mc13783_leds_platform_data {
|
||||
int num_leds;
|
||||
struct mc13783_led_platform_data *led;
|
||||
|
||||
#define MC13783_LED_TRIODE_MD (1 << 0)
|
||||
#define MC13783_LED_TRIODE_AD (1 << 1)
|
||||
#define MC13783_LED_TRIODE_KP (1 << 2)
|
||||
#define MC13783_LED_BOOST_EN (1 << 3)
|
||||
#define MC13783_LED_TC1HALF (1 << 4)
|
||||
#define MC13783_LED_SLEWLIMTC (1 << 5)
|
||||
#define MC13783_LED_SLEWLIMBL (1 << 6)
|
||||
#define MC13783_LED_TRIODE_TC1 (1 << 7)
|
||||
#define MC13783_LED_TRIODE_TC2 (1 << 8)
|
||||
#define MC13783_LED_TRIODE_TC3 (1 << 9)
|
||||
int flags;
|
||||
|
||||
#define MC13783_LED_AB_DISABLED 0
|
||||
#define MC13783_LED_AB_MD1 1
|
||||
#define MC13783_LED_AB_MD12 2
|
||||
#define MC13783_LED_AB_MD123 3
|
||||
#define MC13783_LED_AB_MD1234 4
|
||||
#define MC13783_LED_AB_MD1234_AD1 5
|
||||
#define MC13783_LED_AB_MD1234_AD12 6
|
||||
#define MC13783_LED_AB_MD1_AD 7
|
||||
char abmode;
|
||||
|
||||
#define MC13783_LED_ABREF_200MV 0
|
||||
#define MC13783_LED_ABREF_400MV 1
|
||||
#define MC13783_LED_ABREF_600MV 2
|
||||
#define MC13783_LED_ABREF_800MV 3
|
||||
char abref;
|
||||
|
||||
#define MC13783_LED_PERIOD_10MS 0
|
||||
#define MC13783_LED_PERIOD_100MS 1
|
||||
#define MC13783_LED_PERIOD_500MS 2
|
||||
#define MC13783_LED_PERIOD_2S 3
|
||||
char bl_period;
|
||||
char tc1_period;
|
||||
char tc2_period;
|
||||
char tc3_period;
|
||||
};
|
||||
|
||||
/* to be cleaned up */
|
||||
struct regulator_init_data;
|
||||
|
||||
|
|
@ -80,12 +144,14 @@ struct mc13783_regulator_platform_data {
|
|||
struct mc13783_platform_data {
|
||||
int num_regulators;
|
||||
struct mc13783_regulator_init_data *regulators;
|
||||
struct mc13783_leds_platform_data *leds;
|
||||
|
||||
#define MC13783_USE_TOUCHSCREEN (1 << 0)
|
||||
#define MC13783_USE_CODEC (1 << 1)
|
||||
#define MC13783_USE_ADC (1 << 2)
|
||||
#define MC13783_USE_RTC (1 << 3)
|
||||
#define MC13783_USE_REGULATOR (1 << 4)
|
||||
#define MC13783_USE_LED (1 << 5)
|
||||
unsigned int flags;
|
||||
};
|
||||
|
||||
|
|
|
|||
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