Messages in this thread Patch in this message | | | Date | Wed, 5 Feb 2020 23:31:26 -0800 | From | Shreyas Joshi <> | Subject | [PATCH V3] mfd: da9062: add support for interrupt polarity defined in device tree |
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The da9062 interrupt handler cannot necessarily be low active. Add a function to configure the interrupt type based on what is defined in the device tree. The allowable interrupt type is either low or high level trigger.
Signed-off-by: Shreyas Joshi <shreyas.joshi@biamp.com> --- drivers/mfd/da9062-core.c | 38 +++++++++++++++++++++++++++++++++++--- 1 file changed, 35 insertions(+), 3 deletions(-)
diff --git a/drivers/mfd/da9062-core.c b/drivers/mfd/da9062-core.c index 419c73533401..c44a48ba3d05 100644 --- a/drivers/mfd/da9062-core.c +++ b/drivers/mfd/da9062-core.c @@ -369,6 +369,32 @@ static int da9062_get_device_type(struct da9062 *chip) return ret; } +static u32 da9062_configure_irq_type(struct da9062 *chip, int irq, u32 *trigger) +{ + u32 irq_type = 0; + struct irq_data *irq_data = irq_get_irq_data(irq); + + if (!irq_data) { + dev_err(chip->dev, "Invalid IRQ: %d\n", irq); + return -EINVAL; + } + *trigger = irqd_get_trigger_type(irq_data); + + switch (*trigger) { + case IRQ_TYPE_LEVEL_HIGH: + irq_type = 1; + break; + case IRQ_TYPE_LEVEL_LOW: + irq_type = 0; + break; + default: + dev_warn(chip->dev, "Unsupported IRQ type: %d\n", *trigger); + return -EIO; + } + return regmap_update_bits(chip->regmap, DA9062AA_CONFIG_A, + DA9062AA_IRQ_TYPE_MASK, irq_type); +} + static const struct regmap_range da9061_aa_readable_ranges[] = { regmap_reg_range(DA9062AA_PAGE_CON, DA9062AA_STATUS_B), regmap_reg_range(DA9062AA_STATUS_D, DA9062AA_EVENT_C), @@ -417,6 +443,7 @@ static const struct regmap_range da9061_aa_writeable_ranges[] = { regmap_reg_range(DA9062AA_VBUCK1_A, DA9062AA_VBUCK4_A), regmap_reg_range(DA9062AA_VBUCK3_A, DA9062AA_VBUCK3_A), regmap_reg_range(DA9062AA_VLDO1_A, DA9062AA_VLDO4_A), + regmap_reg_range(DA9062AA_CONFIG_A, DA9062AA_CONFIG_B), regmap_reg_range(DA9062AA_VBUCK1_B, DA9062AA_VBUCK4_B), regmap_reg_range(DA9062AA_VBUCK3_B, DA9062AA_VBUCK3_B), regmap_reg_range(DA9062AA_VLDO1_B, DA9062AA_VLDO4_B), @@ -596,6 +623,7 @@ static int da9062_i2c_probe(struct i2c_client *i2c, const struct regmap_irq_chip *irq_chip; const struct regmap_config *config; int cell_num; + u32 trigger_type = 0; int ret; chip = devm_kzalloc(&i2c->dev, sizeof(*chip), GFP_KERNEL); @@ -654,10 +682,14 @@ static int da9062_i2c_probe(struct i2c_client *i2c, if (ret) return ret; + if (da9062_configure_irq_type(chip, i2c->irq, &trigger_type) < 0) { + dev_err(chip->dev, "Failed to configure IRQ type\n"); + return -EINVAL; + } + ret = regmap_add_irq_chip(chip->regmap, i2c->irq, - IRQF_TRIGGER_LOW | IRQF_ONESHOT | IRQF_SHARED, - -1, irq_chip, - &chip->regmap_irq); + trigger_type | IRQF_SHARED | IRQF_ONESHOT, + -1, irq_chip, &chip->regmap_irq); if (ret) { dev_err(chip->dev, "Failed to request IRQ %d: %d\n", i2c->irq, ret); -- 2.20.1
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