From: Thomas Gleixner <tglx@linutronix.de>
To: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Cc: lee.jones@linaro.org, broonie@kernel.org,
linus.walleij@linaro.org, gnurou@gmail.com, robh+dt@kernel.org,
Jason Cooper <jason@lakedaemon.net>,
alsa-devel@alsa-project.org, patches@opensource.wolfsonmicro.com,
linux-gpio@vger.kernel.org, devicetree@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>,
Marc Zyngier <marc.zyngier@arm.com>
Subject: Re: [PATCH v2 09/18] irqchip: Add driver for Cirrus Logic Madera codecs
Date: Wed, 10 May 2017 17:03:46 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.20.1705101634390.1979@nanos> (raw)
In-Reply-To: <1493050124-5970-10-git-send-email-rf@opensource.wolfsonmicro.com>
On Mon, 24 Apr 2017, Richard Fitzgerald wrote:
> +
> +struct madera_irq_priv {
> + struct device *dev;
> + int irq;
> + struct regmap_irq_chip_data *irq_data;
> + struct madera *madera;
Please write your struct definitions in a tabular fashion:
struct madera_irq_priv {
struct device *dev;
int irq;
struct regmap_irq_chip_data *irq_data;
struct madera *madera;
> +};
> +
> +static const struct regmap_irq madera_irqs[MADERA_NUM_IRQ] = {
> + [MADERA_IRQ_FLL1_LOCK] = { .reg_offset = 0,
> + .mask = MADERA_FLL1_LOCK_EINT1 },
> + [MADERA_IRQ_FLL2_LOCK] = { .reg_offset = 0,
> + .mask = MADERA_FLL2_LOCK_EINT1 },
> + [MADERA_IRQ_FLL3_LOCK] = { .reg_offset = 0,
> + .mask = MADERA_FLL3_LOCK_EINT1 },
> + [MADERA_IRQ_FLLAO_LOCK] = { .reg_offset = 0,
> + .mask = MADERA_FLLAO_LOCK_EINT1 },
> +
> + [MADERA_IRQ_MICDET1] = { .reg_offset = 4,
> + .mask = MADERA_MICDET1_EINT1 },
> + [MADERA_IRQ_MICDET2] = { .reg_offset = 4,
> + .mask = MADERA_MICDET2_EINT1 },
> + [MADERA_IRQ_HPDET] = { .reg_offset = 4,
> + .mask = MADERA_HPDET_EINT1 },
> +
> + [MADERA_IRQ_MICD_CLAMP_RISE] = { .reg_offset = 5,
> + .mask = MADERA_MICD_CLAMP_RISE_EINT1 },
This is hard to read, makes my eyes hurt and takes way too many lines.
#define REGMAP_IRQ(_irq, _off, _mask) \
[MADERA_IRQ_##_irq] = { .reg_offset = (_off), \
.mask = MADERA_##_irq_EINT1) }
static const struct regmap_irq madera_irqs[MADERA_NUM_IRQ] = {
REGMAP_IRQ(FLL1_LOCK, 0),
REGMAP_IRQ(FLL2_LOCK, 0),
....
REGMAP_IRQ(MICD_CLAMP_RISE, 5),
Hmm?
> +
> +static const struct regmap_irq_chip madera_irq = {
> + .name = "madera IRQ",
Again. Tabluar fashion, please.
> + .status_base = MADERA_IRQ1_STATUS_2,
> + .mask_base = MADERA_IRQ1_MASK_2,
> + .ack_base = MADERA_IRQ1_STATUS_2,
> + .runtime_pm = true, /* codec must be resumed to read IRQ status */
Please do not use tail comments. Aside of that this comment is superfluous.
> + .num_regs = 32,
> + .irqs = madera_irqs,
> + .num_irqs = ARRAY_SIZE(madera_irqs),
> +};
> +
> +static int madera_map_irq(struct madera *madera, int irq)
> +{
> + struct madera_irq_priv *priv = dev_get_drvdata(madera->irq_dev);
> +
> + if (irq < 0)
> + return irq;
Why would irq be < 0 ?
> +
> + if (!madera->irq_dev)
> + return -ENOENT;
> +
> + return regmap_irq_get_virq(priv->irq_data, irq);
> +}
> +static int madera_irq_probe(struct platform_device *pdev)
> +{
> + struct madera *madera = dev_get_drvdata(pdev->dev.parent);
> + struct madera_irq_priv *priv;
> + struct irq_data *irq_data;
> + unsigned int irq_flags = madera->pdata.irqchip.irq_flags;
> + int ret;
> +
> + dev_dbg(&pdev->dev, "probe\n");
> +
> + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
> + if (!priv)
> + return -ENOMEM;
> +
> + priv->dev = &pdev->dev;
> + priv->madera = madera;
> + priv->irq = madera->irq;
> +
> + /* Read the flags from the interrupt controller if not specified */
> + if (!irq_flags) {
> + irq_data = irq_get_irq_data(priv->irq);
> + if (!irq_data) {
> + dev_err(priv->dev, "Invalid IRQ: %d\n", priv->irq);
> + return -EINVAL;
> + }
> +
> + irq_flags = irqd_get_trigger_type(irq_data);
> + if (irq_flags == IRQ_TYPE_NONE)
> + irq_flags = IRQF_TRIGGER_LOW; /* Device default */
Please do not use tail comments. They are horrible to parse and disturb the
reading flow.
> + }
> +
> + if (irq_flags & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) {
> + dev_err(priv->dev,
> + "Host interrupt not level-triggered\n");
> + return -EINVAL;
> + }
> +
> + if (irq_flags & IRQF_TRIGGER_HIGH) {
> + ret = regmap_update_bits(madera->regmap, MADERA_IRQ1_CTRL,
> + MADERA_IRQ_POL_MASK, 0);
> + if (ret) {
> + dev_err(priv->dev,
> + "Failed to set IRQ polarity: %d\n", ret);
> + return ret;
> + }
> + }
What makes sure that the hardware is NOT set to TRIGGER_HIGH when you want
to have TRIGGER_LOW?
> +static struct platform_driver madera_irq_driver = {
> + .probe = madera_irq_probe,
Tabular layout please
> + .remove = madera_irq_remove,
> + .driver = {
> + .name = "madera-irq",
> + .pm = &madera_irq_pm_ops,
> + }
> +};
> +
Pointless newline
> +module_platform_driver(madera_irq_driver);
> +
> --- /dev/null
> +++ b/include/linux/irqchip/irq-madera-pdata.h
> @@ -0,0 +1,19 @@
> +
> +struct madera_irqchip_pdata {
> + /** Mode for primary IRQ (defaults to active low) */
If you want to document your structs, then please use proper kerneldoc
style.
> + unsigned int irq_flags;
> +};
Thanks,
tglx
next prev parent reply other threads:[~2017-05-10 15:03 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-24 16:08 [PATCH v2 00/18] Add support for Cirrus Logic CS47L35/L85/L90/L91 codecs Richard Fitzgerald
2017-04-24 16:08 ` [PATCH v2 01/18] mfd: madera: Add register definitions for Cirrus Logic Madera codecs Richard Fitzgerald
2017-05-23 7:20 ` Lee Jones
2017-07-13 8:02 ` Lee Jones
2017-07-13 10:05 ` Mark Brown
2017-07-13 12:44 ` Richard Fitzgerald
2017-07-13 13:03 ` Mark Brown
2017-07-14 11:50 ` Richard Fitzgerald
2017-07-14 12:06 ` [alsa-devel] " Takashi Iwai
2017-04-24 16:08 ` [PATCH v2 02/18] mfd: madera: Add common support " Richard Fitzgerald
2017-05-22 17:39 ` Lee Jones
2017-04-24 16:08 ` [PATCH v2 03/18] dt-bindings: mfd: Add bindings " Richard Fitzgerald
2017-04-28 18:07 ` Rob Herring
2017-05-22 17:40 ` Lee Jones
2017-04-24 16:08 ` [PATCH v2 04/18] mfd: madera: Register map tables for Cirrus Logic CS47L35 Richard Fitzgerald
2017-05-23 7:22 ` Lee Jones
2017-04-24 16:08 ` [PATCH v2 05/18] mfd: madera: Register map tables for Cirrus Logic CS47L85 Richard Fitzgerald
2017-05-23 7:23 ` Lee Jones
2017-04-24 16:08 ` [PATCH v2 06/18] mfd: madera: Register map tables for Cirrus Logic CS47L90/91 Richard Fitzgerald
2017-05-23 7:24 ` Lee Jones
2017-04-24 16:08 ` [PATCH v2 07/18] regulator: arizona-micsupp: Add support for Cirrus Logic Madera codecs Richard Fitzgerald
2017-04-28 18:07 ` Rob Herring
2017-04-24 16:08 ` [PATCH v2 08/18] regulator: arizona-ldo1: " Richard Fitzgerald
2017-04-24 16:08 ` [PATCH v2 09/18] irqchip: Add driver " Richard Fitzgerald
2017-05-10 15:03 ` Thomas Gleixner [this message]
2017-04-24 16:08 ` [PATCH v2 10/18] pinctrl: madera: " Richard Fitzgerald
2017-04-25 9:41 ` Linus Walleij
2017-04-25 10:26 ` Richard Fitzgerald
2017-04-28 7:39 ` Linus Walleij
2017-05-20 20:06 ` Paul Gortmaker
2017-04-24 16:08 ` [PATCH v2 11/18] dt-bindings: pinctrl: Add bindings " Richard Fitzgerald
2017-04-25 9:35 ` Linus Walleij
2017-04-28 18:16 ` Rob Herring
2017-04-24 16:08 ` [PATCH v2 12/18] gpio: madera: Support Cirrus Logic Madera class codecs Richard Fitzgerald
2017-04-25 14:13 ` Linus Walleij
2017-04-25 14:44 ` Richard Fitzgerald
2017-04-28 7:46 ` Linus Walleij
2017-04-28 7:44 ` Linus Walleij
2017-04-24 16:08 ` [PATCH v2 13/18] dt-bindings: gpio: Add bindings for GPIO on Cirrus Logic Madera codecs Richard Fitzgerald
2017-04-25 9:42 ` Linus Walleij
2017-04-28 18:17 ` Rob Herring
2017-04-24 16:08 ` [PATCH v2 14/18] ASoC: madera: Add common support for " Richard Fitzgerald
2017-04-24 16:08 ` [PATCH v2 15/18] dt-bindings: sound: Add bindings " Richard Fitzgerald
2017-04-25 15:52 ` Mark Brown
2017-04-25 16:27 ` Richard Fitzgerald
2017-05-14 10:04 ` Mark Brown
2017-04-28 18:06 ` Rob Herring
2017-04-24 16:08 ` [PATCH v2 16/18] ASoC: cs47l35: Add codec driver for Cirrus Logic CS47L35 Richard Fitzgerald
2017-04-24 16:08 ` [PATCH v2 17/18] ASoC: cs47l85: Add codec driver for Cirrus Logic CS47L85 Richard Fitzgerald
2017-04-24 16:08 ` [PATCH v2 18/18] ASoC: cs47l90: Add codec driver for Cirrus Logic CS47L90 Richard Fitzgerald
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