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leds: leds-mc13783: Add MC13892 LED support 

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Tested-by: Philippe Retornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
hifive-unleashed-5.1
Alexander Shiyan 2013-06-10 09:59:31 -07:00 committed by Bryan Wu
parent 9d263813c2
commit ae6cdb03ef
3 changed files with 69 additions and 4 deletions
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6
drivers/leds/Kconfig
View File

@ -388,12 +388,12 @@ config LEDS_DELL_NETBOOKS
notebooks that have an external LED.
config LEDS_MC13783
tristate "LED Support for MC13783 PMIC"
tristate "LED Support for MC13XXX PMIC"
depends on LEDS_CLASS
depends on MFD_MC13783
depends on MFD_MC13XXX
help
This option enable support for on-chip LED drivers found
on Freescale Semiconductor MC13783 PMIC.
on Freescale Semiconductor MC13783/MC13892 PMIC.
config LEDS_NS2
tristate "LED support for Network Space v2 GPIO LEDs"

60
drivers/leds/leds-mc13783.c
View File

@ -1,5 +1,5 @@
/*
* LEDs driver for Freescale MC13783
* LEDs driver for Freescale MC13783/MC13892
*
* Copyright (C) 2010 Philippe Rétornaz
*
@ -85,6 +85,34 @@ static void mc13xxx_led_work(struct work_struct *work)
value = led->new_brightness >> 3;
mask = 0x1f;
break;
case MC13892_LED_MD:
reg = MC13XXX_REG_LED_CONTROL(0);
shift = 3;
mask = 0x3f;
value = led->new_brightness >> 2;
break;
case MC13892_LED_AD:
reg = MC13XXX_REG_LED_CONTROL(0);
shift = 15;
mask = 0x3f;
value = led->new_brightness >> 2;
break;
case MC13892_LED_KP:
reg = MC13XXX_REG_LED_CONTROL(1);
shift = 3;
mask = 0x3f;
value = led->new_brightness >> 2;
break;
case MC13892_LED_R:
case MC13892_LED_G:
case MC13892_LED_B:
off = led->id - MC13892_LED_R;
bank = off / 2;
reg = MC13XXX_REG_LED_CONTROL(2) + bank;
shift = (off - bank * 2) * 12 + 3;
value = led->new_brightness >> 2;
mask = 0x3f;
break;
default:
BUG();
}
@ -138,6 +166,29 @@ static int __init mc13xxx_led_setup(struct mc13xxx_led *led, int max_current)
shift = ((led->id - MC13783_LED_R1) - bank * 3) * 2;
mask = 0x03;
break;
case MC13892_LED_MD:
reg = MC13XXX_REG_LED_CONTROL(0);
shift = 9;
mask = 0x07;
break;
case MC13892_LED_AD:
reg = MC13XXX_REG_LED_CONTROL(0);
shift = 21;
mask = 0x07;
break;
case MC13892_LED_KP:
reg = MC13XXX_REG_LED_CONTROL(1);
shift = 9;
mask = 0x07;
break;
case MC13892_LED_R:
case MC13892_LED_G:
case MC13892_LED_B:
bank = (led->id - MC13892_LED_R) / 2;
reg = MC13XXX_REG_LED_CONTROL(2) + bank;
shift = ((led->id - MC13892_LED_R) - bank * 2) * 12 + 9;
mask = 0x07;
break;
default:
BUG();
}
@ -276,8 +327,15 @@ static const struct mc13xxx_led_devtype mc13783_led_devtype = {
.num_regs = 6,
};
static const struct mc13xxx_led_devtype mc13892_led_devtype = {
.led_min = MC13892_LED_MD,
.led_max = MC13892_LED_B,
.num_regs = 4,
};
static const struct platform_device_id mc13xxx_led_id_table[] = {
{ "mc13783-led", (kernel_ulong_t)&mc13783_led_devtype, },
{ "mc13892-led", (kernel_ulong_t)&mc13892_led_devtype, },
{ }
};
MODULE_DEVICE_TABLE(platform, mc13xxx_led_id_table);

7
include/linux/mfd/mc13xxx.h
View File

@ -92,6 +92,13 @@ enum {
MC13783_LED_R3,
MC13783_LED_G3,
MC13783_LED_B3,
/* MC13892 LED IDs */
MC13892_LED_MD,
MC13892_LED_AD,
MC13892_LED_KP,
MC13892_LED_R,
MC13892_LED_G,
MC13892_LED_B,
};
struct mc13xxx_led_platform_data {