kernel/git/stable/linux.git/drivers/mfd/max77693.c, branch linux-3.18.y

mfd: max77693: Fix always masked MUIC interrupts

2014-11-10T15:22:02+00:00

All interrupts coming from MUIC were ignored because interrupt source register was masked. The Maxim 77693 has a "interrupt source" - a separate register and interrupts which give information about PMIC block triggering the individual interrupt (charger, topsys, MUIC, flash LED). By default bootloader could initialize this register to "mask all" value. In such case (observed on Trats2 board) MUIC interrupts won't be generated regardless of their mask status. Regmap irq chip was unmasking individual MUIC interrupts but the source was masked Before introducing regmap irq chip this interrupt source was unmasked, read and acked. Reading and acking is not necessary but unmasking is. Fixes: 342d669c1ee4 ("mfd: max77693: Handle IRQs using regmap") Cc: Signed-off-by: Krzysztof Kozlowski Reviewed-by: Chanwoo Choi Signed-off-by: Lee Jones

mfd: max77693: Use proper regmap for handling MUIC interrupts

2014-11-10T15:22:01+00:00

Interrupts coming from Maxim77693 MUIC block (MicroUSB Interface Controller) were not handled at all because wrong regmap was used for MUIC's regmap_irq_chip. The MUIC component of Maxim 77693 uses different I2C address thus second regmap is created and used by max77693 extcon driver. The registers for MUIC interrupts are also in that block and should be handled by that second regmap. However the regmap irq chip for MUIC was configured with default regmap which could not read MUIC registers. Fixes: 342d669c1ee4 ("mfd: max77693: Handle IRQs using regmap") Cc: Signed-off-by: Krzysztof Kozlowski Reviewed-by: Chanwoo Choi Signed-off-by: Lee Jones

mfd: max77693: Improve support for the flash cell

2014-09-26T07:15:43+00:00

This patch improves support for the flash cell of max77693 mfd by adding relevant of_compatible field and a structure for caching related platform data. Added are also FLASH registers related macro definitions. Signed-off-by: Jacek Anaszewski Signed-off-by: Andrzej Hajda Acked-by: Kyungmin Park Signed-off-by: Lee Jones

mfd: max77693: Handle IRQs using regmap

2014-06-17T14:17:00+00:00

This patch modifies mfd driver to use regmap for handling interrupts. It allows to simplify irq handling process. This modifications needed to make small changes in function drivers, which use interrupts. Signed-off-by: Robert Baldyga Reviewed-by: Krzysztof Kozlowski Acked-by: Chanwoo Choi Signed-off-by: Lee Jones

mfd: max77693: Remove unnecessary wrapper functions

2014-06-17T14:16:10+00:00

This patch removes wrapper functions used to access regmap, and make driver using regmap_*() functions instead. Signed-off-by: Robert Baldyga Reviewed-by: Krzysztof Kozlowski Acked-by: Mark Brown Acked-by: Chanwoo Choi Signed-off-by: Lee Jones

mfd: max77693: Make of_device_id array const

2014-06-03T07:11:32+00:00

Array of struct of_device_id may be be const as expected by of_match_table field. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Chanwoo Choi Signed-off-by: Lee Jones

mfd: max77693: Fix possible NULL pointer dereference on i2c_new_dummy error

2014-03-19T08:58:12+00:00

During probe the driver allocates dummy I2C devices for MUIC and haptic with i2c_new_dummy() but it does not check the return value of this calls. In case of error (i2c_new_device(): memory allocation failure or I2C address cannot be used) this function returns NULL which is later used by devm_regmap_init_i2c() and i2c_unregister_device(). If i2c_new_dummy() fails for MUIC or haptic devices, fail also the probe for main MFD driver. Cc: stable@vger.kernel.org Signed-off-by: Krzysztof Kozlowski Signed-off-by: Lee Jones

mfd: max77693: Set proper maximum register for MUIC regmap

2014-01-21T08:28:13+00:00

The MUIC block in max77693 has different I2C address than PMIC. The driver allocated two regmaps: for PMIC and MUIC. However it used the same regmap_config (with max_register field) for both regmaps. Actual maximum address of register for MUIC is different than for PMIC. Define another regmap_config for MUIC with proper max_register value. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Lee Jones

mfd: maxim: Constify struct mfd_cell where possible

2014-01-06T09:13:27+00:00

As of commit 03e361b25ee8dfb1fd9b890072c23c4aae01c6c7 ("mfd: Stop setting refcounting pointers in original mfd_cell arrays"), the "cell" parameter of mfd_add_devices() is "const" again. Hence make all cell data passed to mfd_add_devices() const where possible. Signed-off-by: Geert Uytterhoeven Signed-off-by: Lee Jones

mfd: max77693: Include linux/of.h header

2013-10-23T15:22:30+00:00

'of_match_ptr' is defined in linux/of.h. Include it explicitly to avoid build breakage in the future. Signed-off-by: Sachin Kamat Signed-off-by: Lee Jones