diff options
Diffstat (limited to 'drivers/iio/adc/stm32-adc-core.c')
| -rw-r--r-- | drivers/iio/adc/stm32-adc-core.c | 34 |
1 files changed, 14 insertions, 20 deletions
diff --git a/drivers/iio/adc/stm32-adc-core.c b/drivers/iio/adc/stm32-adc-core.c index 2df88d2b880a..0e2068ec068b 100644 --- a/drivers/iio/adc/stm32-adc-core.c +++ b/drivers/iio/adc/stm32-adc-core.c @@ -65,12 +65,14 @@ struct stm32_adc_priv; * @clk_sel: clock selection routine * @max_clk_rate_hz: maximum analog clock rate (Hz, from datasheet) * @has_syscfg: SYSCFG capability flags + * @num_irqs: number of interrupt lines */ struct stm32_adc_priv_cfg { const struct stm32_adc_common_regs *regs; int (*clk_sel)(struct platform_device *, struct stm32_adc_priv *); u32 max_clk_rate_hz; unsigned int has_syscfg; + unsigned int num_irqs; }; /** @@ -375,21 +377,15 @@ static int stm32_adc_irq_probe(struct platform_device *pdev, struct device_node *np = pdev->dev.of_node; unsigned int i; - for (i = 0; i < STM32_ADC_MAX_ADCS; i++) { + /* + * Interrupt(s) must be provided, depending on the compatible: + * - stm32f4/h7 shares a common interrupt line. + * - stm32mp1, has one line per ADC + */ + for (i = 0; i < priv->cfg->num_irqs; i++) { priv->irq[i] = platform_get_irq(pdev, i); - if (priv->irq[i] < 0) { - /* - * At least one interrupt must be provided, make others - * optional: - * - stm32f4/h7 shares a common interrupt. - * - stm32mp1, has one line per ADC (either for ADC1, - * ADC2 or both). - */ - if (i && priv->irq[i] == -ENXIO) - continue; - + if (priv->irq[i] < 0) return priv->irq[i]; - } } priv->domain = irq_domain_add_simple(np, STM32_ADC_MAX_ADCS, 0, @@ -400,9 +396,7 @@ static int stm32_adc_irq_probe(struct platform_device *pdev, return -ENOMEM; } - for (i = 0; i < STM32_ADC_MAX_ADCS; i++) { - if (priv->irq[i] < 0) - continue; + for (i = 0; i < priv->cfg->num_irqs; i++) { irq_set_chained_handler(priv->irq[i], stm32_adc_irq_handler); irq_set_handler_data(priv->irq[i], priv); } @@ -420,11 +414,8 @@ static void stm32_adc_irq_remove(struct platform_device *pdev, irq_dispose_mapping(irq_find_mapping(priv->domain, hwirq)); irq_domain_remove(priv->domain); - for (i = 0; i < STM32_ADC_MAX_ADCS; i++) { - if (priv->irq[i] < 0) - continue; + for (i = 0; i < priv->cfg->num_irqs; i++) irq_set_chained_handler(priv->irq[i], NULL); - } } static int stm32_adc_core_switches_supply_en(struct stm32_adc_priv *priv, @@ -817,6 +808,7 @@ static const struct stm32_adc_priv_cfg stm32f4_adc_priv_cfg = { .regs = &stm32f4_adc_common_regs, .clk_sel = stm32f4_adc_clk_sel, .max_clk_rate_hz = 36000000, + .num_irqs = 1, }; static const struct stm32_adc_priv_cfg stm32h7_adc_priv_cfg = { @@ -824,6 +816,7 @@ static const struct stm32_adc_priv_cfg stm32h7_adc_priv_cfg = { .clk_sel = stm32h7_adc_clk_sel, .max_clk_rate_hz = 36000000, .has_syscfg = HAS_VBOOSTER, + .num_irqs = 1, }; static const struct stm32_adc_priv_cfg stm32mp1_adc_priv_cfg = { @@ -831,6 +824,7 @@ static const struct stm32_adc_priv_cfg stm32mp1_adc_priv_cfg = { .clk_sel = stm32h7_adc_clk_sel, .max_clk_rate_hz = 40000000, .has_syscfg = HAS_VBOOSTER | HAS_ANASWVDD, + .num_irqs = 2, }; static const struct of_device_id stm32_adc_of_match[] = { |