From: Lee Jones <lee.jones@linaro.org>
To: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
Alessandro Zummo <a.zummo@towertech.it>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
srv_heupstream@mediatek.com, devicetree@vger.kernel.org,
Sean Wang <sean.wang@mediatek.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Rob Herring <robh+dt@kernel.org>,
linux-kernel@vger.kernel.org,
Richard Fontana <rfontana@redhat.com>,
Mark Brown <broonie@kernel.org>,
linux-mediatek@lists.infradead.org,
Allison Randal <allison@lohutok.net>,
linux-rtc@vger.kernel.org,
Matthias Brugger <matthias.bgg@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Eddie Huang <eddie.huang@mediatek.com>,
Kate Stewart <kstewart@linuxfoundation.org>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v4 06/10] mfd: Add support for the MediaTek MT6358 PMIC
Date: Mon, 12 Aug 2019 11:59:33 +0100 [thread overview]
Message-ID: <20190812105933.GO26727@dell> (raw)
In-Reply-To: <1564982518-32163-7-git-send-email-hsin-hsiung.wang@mediatek.com>
On Mon, 05 Aug 2019, Hsin-Hsiung Wang wrote:
> This adds support for the MediaTek MT6358 PMIC. This is a
> multifunction device with the following sub modules:
>
> - Regulator
> - RTC
> - Codec
> - Interrupt
>
> It is interfaced to the host controller using SPI interface
> by a proprietary hardware called PMIC wrapper or pwrap.
> MT6358 MFD is a child device of the pwrap.
>
> Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
> ---
> drivers/mfd/Makefile | 3 +-
> drivers/mfd/mt6358-irq.c | 229 ++++++++++++++++++++++++++++
> drivers/mfd/mt6397-core.c | 52 ++++++-
> include/linux/mfd/mt6358/core.h | 158 ++++++++++++++++++++
> include/linux/mfd/mt6358/registers.h | 282 +++++++++++++++++++++++++++++++++++
> include/linux/mfd/mt6397/core.h | 3 +
> 6 files changed, 725 insertions(+), 2 deletions(-)
> create mode 100644 drivers/mfd/mt6358-irq.c
> create mode 100644 include/linux/mfd/mt6358/core.h
> create mode 100644 include/linux/mfd/mt6358/registers.h
>
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index 9a96325..36d088b 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -241,7 +241,8 @@ obj-$(CONFIG_INTEL_SOC_PMIC) += intel-soc-pmic.o
> obj-$(CONFIG_INTEL_SOC_PMIC_BXTWC) += intel_soc_pmic_bxtwc.o
> obj-$(CONFIG_INTEL_SOC_PMIC_CHTWC) += intel_soc_pmic_chtwc.o
> obj-$(CONFIG_INTEL_SOC_PMIC_CHTDC_TI) += intel_soc_pmic_chtdc_ti.o
> -mt6397-objs := mt6397-core.o mt6397-irq.o
> +
> +mt6397-objs := mt6397-core.o mt6397-irq.o mt6358-irq.o
> obj-$(CONFIG_MFD_MT6397) += mt6397.o
>
> obj-$(CONFIG_MFD_ALTERA_A10SR) += altera-a10sr.o
> diff --git a/drivers/mfd/mt6358-irq.c b/drivers/mfd/mt6358-irq.c
> new file mode 100644
> index 0000000..2f55079
> --- /dev/null
> +++ b/drivers/mfd/mt6358-irq.c
> @@ -0,0 +1,229 @@
> +// SPDX-License-Identifier: GPL-2.0
> +//
> +// Copyright (c) 2019 MediaTek Inc.
> +
> +#include <linux/interrupt.h>
> +#include <linux/mfd/mt6358/core.h>
> +#include <linux/mfd/mt6358/registers.h>
> +#include <linux/mfd/mt6397/core.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_device.h>
> +#include <linux/of_irq.h>
> +#include <linux/platform_device.h>
> +#include <linux/regmap.h>
[...]
> +static void pmic_irq_sync_unlock(struct irq_data *data)
> +{
> + unsigned int i, top_gp, en_reg, int_regs, shift;
> + struct mt6397_chip *chip = irq_data_get_irq_chip_data(data);
> + struct pmic_irq_data *irqd = chip->irq_data;
> +
> + for (i = 0; i < irqd->num_pmic_irqs; i++) {
> + if (irqd->enable_hwirq[i] == irqd->cache_hwirq[i])
> + continue;
> +
> + top_gp = 0;
> + while ((top_gp + 1) < ARRAY_SIZE(mt6358_ints) &&
> + i >= mt6358_ints[top_gp + 1].hwirq_base)
> + top_gp++;
A comment here would make this easier to follow.
> + if (top_gp >= ARRAY_SIZE(mt6358_ints)) {
> + mutex_unlock(&chip->irqlock);
> + dev_err(chip->dev,
> + "Failed to get top_group: %d\n", top_gp);
> + return;
> + }
> +
> + int_regs = (i - mt6358_ints[top_gp].hwirq_base) /
> + MT6358_REG_WIDTH;
> + en_reg = mt6358_ints[top_gp].en_reg +
> + mt6358_ints[top_gp].en_reg_shift * int_regs;
> + shift = (i - mt6358_ints[top_gp].hwirq_base) % MT6358_REG_WIDTH;
> + regmap_update_bits(chip->regmap, en_reg, BIT(shift),
> + irqd->enable_hwirq[i] << shift);
> + irqd->cache_hwirq[i] = irqd->enable_hwirq[i];
> + }
> + mutex_unlock(&chip->irqlock);
> +}
[...]
> +int mt6358_irq_init(struct mt6397_chip *chip)
> +{
> + int i, j, ret;
> + struct pmic_irq_data *irqd;
> +
> + irqd = devm_kzalloc(chip->dev, sizeof(struct pmic_irq_data *),
> + GFP_KERNEL);
> + if (!irqd)
> + return -ENOMEM;
> +
> + chip->irq_data = irqd;
> +
> + mutex_init(&chip->irqlock);
> + irqd->top_int_status_reg = MT6358_TOP_INT_STATUS0;
> + irqd->num_pmic_irqs = MT6358_IRQ_NR;
> + irqd->num_top = ARRAY_SIZE(mt6358_ints);
> +
> + irqd->enable_hwirq = devm_kcalloc(chip->dev,
> + irqd->num_pmic_irqs,
> + sizeof(bool),
> + GFP_KERNEL);
> + if (!irqd->enable_hwirq)
> + return -ENOMEM;
> +
> + irqd->cache_hwirq = devm_kcalloc(chip->dev,
> + irqd->num_pmic_irqs,
> + sizeof(bool),
> + GFP_KERNEL);
> + if (!irqd->cache_hwirq)
> + return -ENOMEM;
> +
> + /* Disable all interrupt for initializing */
s/interrupt/interrupts/
> + for (i = 0; i < irqd->num_top; i++) {
> + for (j = 0; j < mt6358_ints[i].num_int_regs; j++)
> + regmap_write(chip->regmap,
> + mt6358_ints[i].en_reg +
> + mt6358_ints[i].en_reg_shift * j, 0);
> + }
> +
> + chip->irq_domain = irq_domain_add_linear(chip->dev->of_node,
> + irqd->num_pmic_irqs,
> + &mt6358_irq_domain_ops, chip);
> + if (!chip->irq_domain) {
> + dev_err(chip->dev, "could not create irq domain\n");
s/irq/IRQ/
> + return -ENODEV;
> + }
> +
> + ret = devm_request_threaded_irq(chip->dev, chip->irq, NULL,
> + mt6358_irq_handler, IRQF_ONESHOT,
> + mt6358_irq_chip.name, chip);
> + if (ret) {
> + dev_err(chip->dev, "failed to register irq=%d; err: %d\n",
> + chip->irq, ret);
> + return ret;
> + }
> +
> + enable_irq_wake(chip->irq);
> + return ret;
> +}
[...]
> static const struct chip_data mt6397_core = {
> .cid_addr = MT6397_CID,
> .cid_shift = 0,
> @@ -135,7 +172,11 @@ static int mt6397_probe(struct platform_device *pdev)
> if (pmic->irq <= 0)
> return pmic->irq;
>
> - ret = mt6397_irq_init(pmic);
> + if (pmic->chip_id == MT6358_CHIP_ID)
> + ret = mt6358_irq_init(pmic);
> + else
> + ret = mt6397_irq_init(pmic);
> +
You may with so to check for both and error out on an unsupported chip
ID.
> if (ret)
> return ret;
>
> @@ -146,6 +187,12 @@ static int mt6397_probe(struct platform_device *pdev)
> 0, pmic->irq_domain);
> break;
>
> + case MT6358_CHIP_ID:
> + ret = devm_mfd_add_devices(&pdev->dev, -1, mt6358_devs,
Not -1. Please use the defines.
> + ARRAY_SIZE(mt6358_devs), NULL,
> + 0, pmic->irq_domain);
> + break;
> +
> case MT6391_CHIP_ID:
> case MT6397_CHIP_ID:
> ret = devm_mfd_add_devices(&pdev->dev, -1, mt6397_devs,
> @@ -171,6 +218,9 @@ static const struct of_device_id mt6397_of_match[] = {
> .compatible = "mediatek,mt6323",
> .data = &mt6323_core,
> }, {
> + .compatible = "mediatek,mt6358",
> + .data = &mt6358_core,
> + }, {
> .compatible = "mediatek,mt6397",
> .data = &mt6397_core,
> }, {
> diff --git a/include/linux/mfd/mt6358/core.h b/include/linux/mfd/mt6358/core.h
> new file mode 100644
> index 0000000..05108617
> --- /dev/null
> +++ b/include/linux/mfd/mt6358/core.h
> @@ -0,0 +1,158 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (c) 2019 MediaTek Inc.
> + */
> +
> +#ifndef __MFD_MT6358_CORE_H__
> +#define __MFD_MT6358_CORE_H__
> +
> +#define MT6358_REG_WIDTH 16
[...]
> +#define MT6358_TOP_GEN(sp) \
> +{ \
> + .hwirq_base = MT6358_IRQ_##sp##_BASE, \
> + .num_int_regs = \
> + ((MT6358_IRQ_##sp##_BITS - 1) / MT6358_REG_WIDTH) + 1, \
> + .num_int_bits = MT6358_IRQ_##sp##_BITS, \
> + .en_reg = MT6358_##sp##_TOP_INT_CON0, \
> + .en_reg_shift = 0x6, \
> + .sta_reg = MT6358_##sp##_TOP_INT_STATUS0, \
> + .sta_reg_shift = 0x2, \
> + .top_offset = MT6358_##sp##_TOP, \
> +}
Please tab out the '\'s.
--
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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next prev parent reply other threads:[~2019-08-12 10:59 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-05 5:21 [PATCH v4 00/10] Add Support for MediaTek PMIC MT6358 Hsin-Hsiung Wang
2019-08-05 5:21 ` [PATCH v4 01/10] mfd: mt6397: clean up code Hsin-Hsiung Wang
2019-08-05 5:21 ` [PATCH v4 02/10] mfd: mt6397: extract irq related code from core driver Hsin-Hsiung Wang
2019-08-12 10:59 ` Lee Jones
2019-08-05 5:21 ` [PATCH v4 03/10] mfd: mt6397: modify suspend/resume behavior Hsin-Hsiung Wang
2019-08-12 11:00 ` Lee Jones
2019-08-05 5:21 ` [PATCH v4 04/10] dt-bindings: mfd: Add compatible for the MediaTek MT6358 PMIC Hsin-Hsiung Wang
2019-08-05 5:21 ` [PATCH v4 05/10] regulator: Add document for MT6358 regulator Hsin-Hsiung Wang
2019-08-05 5:21 ` [PATCH v4 06/10] mfd: Add support for the MediaTek MT6358 PMIC Hsin-Hsiung Wang
2019-08-12 10:59 ` Lee Jones [this message]
2019-08-23 1:57 ` Hsin-hsiung Wang
2019-08-05 5:21 ` [PATCH v4 07/10] regulator: mt6358: Add support for MT6358 regulator Hsin-Hsiung Wang
2019-08-05 13:10 ` Mark Brown
2019-08-06 7:28 ` Hsin-hsiung Wang
2019-08-05 5:21 ` [PATCH v4 08/10] arm64: dts: mt6358: add PMIC MT6358 related nodes Hsin-Hsiung Wang
2019-08-05 5:21 ` [PATCH v4 09/10] rtc: mt6397: fix alarm register overwrite Hsin-Hsiung Wang
2019-08-05 7:24 ` Alexandre Belloni
2019-08-05 5:21 ` [PATCH v4 10/10] rtc: Add support for the MediaTek MT6358 RTC Hsin-Hsiung Wang
2019-08-05 7:23 ` Alexandre Belloni
2019-08-06 11:41 ` Ran Bi
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