GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

regmap: regmap-irq/gpio-max77620: add level-irq support

Browse source 
Add level active IRQ support to regmap-irq irqchip. Change breaks
existing regmap-irq type setting. Convert the existing drivers which
use regmap-irq with trigger type setting (gpio-max77620) to work
with this new approach. So we do not magically support level-active
IRQs on gpio-max77620 - but add support to the regmap-irq for chips
which support them =)

We do not support distinguishing situation where HW supports rising
and falling edge detection but not both. Separating this would require
inventing yet another flags for IRQ types.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Matti Vaittinen 2018-12-18 13:59:31 +02:00 • committed by Mark Brown
parent 84267d1b18
commit 1c2928e3e3
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
3 changed files with 110 additions and 48 deletions
Download patch file Download diff file Expand all files Collapse all files

27
include/linux/regmap.h
View file

@ -1089,22 +1089,37 @@ int regmap_fields_read(struct regmap_field *field, unsigned int id,
int regmap_fields_update_bits_base(struct regmap_field *field, unsigned int id,
unsigned int mask, unsigned int val,
bool *change, bool async, bool force);
/**
* struct regmap_irq_type - IRQ type definitions.
*
* @type_reg_offset: Offset register for the irq type setting.
* @type_rising_val: Register value to configure RISING type irq.
* @type_falling_val: Register value to configure FALLING type irq.
* @type_level_low_val: Register value to configure LEVEL_LOW type irq.
* @type_level_high_val: Register value to configure LEVEL_HIGH type irq.
* @types_supported: logical OR of IRQ_TYPE_* flags indicating supported types.
*/
struct regmap_irq_type {
unsigned int type_reg_offset;
unsigned int type_reg_mask;
unsigned int type_rising_val;
unsigned int type_falling_val;
unsigned int type_level_low_val;
unsigned int type_level_high_val;
unsigned int types_supported;
};
/**
* struct regmap_irq - Description of an IRQ for the generic regmap irq_chip.
*
* @reg_offset: Offset of the status/mask register within the bank
* @mask: Mask used to flag/control the register.
* @type_reg_offset: Offset register for the irq type setting.
* @type_rising_mask: Mask bit to configure RISING type irq.
* @type_falling_mask: Mask bit to configure FALLING type irq.
* @type: IRQ trigger type setting details if supported.
*/
struct regmap_irq {
unsigned int reg_offset;
unsigned int mask;
unsigned int type_reg_offset;
unsigned int type_rising_mask;
unsigned int type_falling_mask;
struct regmap_irq_type type;
};
#define REGMAP_IRQ_REG(_irq, _off, _mask) \