From: Hsin-hsiung Wang <hsin-hsiung.wang@mediatek.com>
To: Lee Jones <lee.jones@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Mark Rutland <mark.rutland@arm.com>,
Sean Wang <sean.wang@mediatek.com>,
Sebastian Reichel <sre@kernel.org>,
Eddie Huang <eddie.huang@mediatek.com>,
Alessandro Zummo <a.zummo@towertech.it>,
"Frank Wunderlich" <frank-w@public-files.de>,
Thomas Gleixner <tglx@linutronix.de>,
Richard Fontana <rfontana@redhat.com>,
Josef Friedl <josef.friedl@speed.at>,
Ran Bi <ran.bi@mediatek.com>, <devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-pm@vger.kernel.org>,
<linux-rtc@vger.kernel.org>,
Nicolas Boichat <drinkcat@chromium.org>,
<srv_heupstream@mediatek.com>
Subject: Re: [PATCH v10 3/5] mfd: Add support for the MediaTek MT6358 PMIC
Date: Wed, 1 Apr 2020 16:26:21 +0800 [thread overview]
Message-ID: <1585729581.2029.2.camel@mtksdaap41> (raw)
In-Reply-To: <20200325094326.GH442973@dell>
Hi,
On Wed, 2020-03-25 at 09:43 +0000, Lee Jones wrote:
> On Wed, 11 Mar 2020, 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 | 2 +-
> > drivers/mfd/mt6358-irq.c | 236 +++++++++++++++++++++++++++++
> > drivers/mfd/mt6397-core.c | 55 ++++++-
> > include/linux/mfd/mt6358/core.h | 158 ++++++++++++++++++++
> > include/linux/mfd/mt6358/registers.h | 282 +++++++++++++++++++++++++++++++++++
> > include/linux/mfd/mt6397/core.h | 3 +
> > 6 files changed, 731 insertions(+), 5 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 b83f172..9af1414 100644
> > --- a/drivers/mfd/Makefile
> > +++ b/drivers/mfd/Makefile
> > @@ -238,7 +238,7 @@ 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_INTEL_SOC_PMIC_MRFLD) += intel_soc_pmic_mrfld.o
> >
> > diff --git a/drivers/mfd/mt6358-irq.c b/drivers/mfd/mt6358-irq.c
> > new file mode 100644
> > index 0000000..022e5f5
> > --- /dev/null
> > +++ b/drivers/mfd/mt6358-irq.c
> > @@ -0,0 +1,236 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +//
> > +// Copyright (c) 2019 MediaTek Inc.
>
> This is out of date.
>
Thanks. I will update it in the next patch.
> > +#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 struct irq_top_t mt6358_ints[] = {
> > + MT6358_TOP_GEN(BUCK),
> > + MT6358_TOP_GEN(LDO),
> > + MT6358_TOP_GEN(PSC),
> > + MT6358_TOP_GEN(SCK),
> > + MT6358_TOP_GEN(BM),
> > + MT6358_TOP_GEN(HK),
> > + MT6358_TOP_GEN(AUD),
> > + MT6358_TOP_GEN(MISC),
> > +};
> > +
> > +static void pmic_irq_enable(struct irq_data *data)
> > +{
> > + unsigned int hwirq = irqd_to_hwirq(data);
> > + struct mt6397_chip *chip = irq_data_get_irq_chip_data(data);
>
> 6397?
>
> This does make me wonder how different this file is to the existing
> support for the MT6397. What is the justification for not extending
> that instead of creating a brand new file?
>
MT6358 is similar to MT6397 for mfd driver except the hardware design of
interrupt which provides more interrupts than MT6397.
I think MT6358 can reuse the other part of MT6397 mfd driver, so I only
add the interrupt part of MT6358.
> > + struct pmic_irq_data *irqd = chip->irq_data;
> > +
> > + irqd->enable_hwirq[hwirq] = true;
> > +}
> > +
> > +static void pmic_irq_disable(struct irq_data *data)
> > +{
> > + unsigned int hwirq = irqd_to_hwirq(data);
> > + struct mt6397_chip *chip = irq_data_get_irq_chip_data(data);
> > + struct pmic_irq_data *irqd = chip->irq_data;
> > +
> > + irqd->enable_hwirq[hwirq] = false;
> > +}
> > +
> > +static void pmic_irq_lock(struct irq_data *data)
> > +{
> > + struct mt6397_chip *chip = irq_data_get_irq_chip_data(data);
> > +
> > + mutex_lock(&chip->irqlock);
> > +}
> > +
> > +static void pmic_irq_sync_unlock(struct irq_data *data)
> > +{
> > + unsigned int i, top_gp, gp_offset, 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;
> > +
> > + /* Find out the IRQ group */
> > + top_gp = 0;
> > + while ((top_gp + 1) < irqd->num_top &&
> > + i >= mt6358_ints[top_gp + 1].hwirq_base)
> > + top_gp++;
> > +
> > + /* Find the irq registers */
>
> Nit: "IRQ"
>
Thanks. I will update it in the next patch.
> > + gp_offset = i - mt6358_ints[top_gp].hwirq_base;
> > + int_regs = gp_offset / MT6358_REG_WIDTH;
> > + shift = gp_offset % MT6358_REG_WIDTH;
> > + en_reg = mt6358_ints[top_gp].en_reg +
> > + (mt6358_ints[top_gp].en_reg_shift * int_regs);
> > +
> > + 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 *),
>
> sizeof(*irqd)
>
Thanks. I will update it in the next patch.
> [...]
>
> > static const struct chip_data mt6397_core = {
> > .cid_addr = MT6397_CID,
> > .cid_shift = 0,
> > @@ -154,19 +184,33 @@ static int mt6397_probe(struct platform_device *pdev)
> > if (pmic->irq <= 0)
> > return pmic->irq;
> >
> > - ret = mt6397_irq_init(pmic);
> > - if (ret)
> > - return ret;
> > -
> > switch (pmic->chip_id) {
> > case MT6323_CHIP_ID:
> > + ret = mt6397_irq_init(pmic);
> > + if (ret)
> > + return ret;
> > +
> > ret = devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
> > mt6323_devs, ARRAY_SIZE(mt6323_devs),
> > NULL, 0, pmic->irq_domain);
> > break;
> >
> > + case MT6358_CHIP_ID:
> > + ret = mt6358_irq_init(pmic);
> > + if (ret)
> > + return ret;
> > +
> > + ret = devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
> > + mt6358_devs, ARRAY_SIZE(mt6358_devs),
> > + NULL, 0, pmic->irq_domain);
>
> In a subsequent patch you can choose the correct mtXXXX_devs structure
> to pass and call devm_mfd_add_devices() only once below the switch().
>
Thanks for your comment. I will rewrite this in the next patch.
> > + break;
> > +
> > case MT6391_CHIP_ID:
> > case MT6397_CHIP_ID:
> > + ret = mt6397_irq_init(pmic);
> > + if (ret)
> > + return ret;
> > +
> > ret = devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
> > mt6397_devs, ARRAY_SIZE(mt6397_devs),
> > NULL, 0, pmic->irq_domain);
>
> [...]
>
next prev parent reply other threads:[~2020-04-01 8:26 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-11 9:16 [PATCH v10 0/5] Add Support for MediaTek PMIC MT6358 Hsin-Hsiung Wang
2020-03-11 9:16 ` [PATCH v10 1/5] mfd: mt6397: modify suspend/resume behavior Hsin-Hsiung Wang
2020-03-11 9:17 ` [PATCH v10 2/5] dt-bindings: mfd: Add compatible for the MediaTek MT6358 PMIC Hsin-Hsiung Wang
2020-03-11 9:17 ` [PATCH v10 3/5] mfd: Add support " Hsin-Hsiung Wang
2020-03-12 1:41 ` Nicolas Boichat
2020-03-25 9:43 ` Lee Jones
2020-04-01 8:15 ` Hsin-hsiung Wang
2020-04-01 8:26 ` Hsin-hsiung Wang [this message]
2020-03-11 9:17 ` [PATCH v10 4/5] rtc: mt6397: Add support for the MediaTek MT6358 RTC Hsin-Hsiung Wang
2020-03-11 22:24 ` Sebastian Reichel
2020-03-12 1:47 ` Nicolas Boichat
2020-03-12 7:44 ` Lee Jones
2020-03-12 8:57 ` Ran Bi
2020-03-13 7:22 ` Lee Jones
2020-03-13 7:47 ` Alexandre Belloni
2020-03-13 8:30 ` Ran Bi
2020-03-11 9:17 ` [PATCH v10 5/5] arm64: dts: mt6358: add PMIC MT6358 related nodes Hsin-Hsiung Wang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1585729581.2029.2.camel@mtksdaap41 \
--to=hsin-hsiung.wang@mediatek.com \
--cc=a.zummo@towertech.it \
--cc=alexandre.belloni@bootlin.com \
--cc=devicetree@vger.kernel.org \
--cc=drinkcat@chromium.org \
--cc=eddie.huang@mediatek.com \
--cc=frank-w@public-files.de \
--cc=josef.friedl@speed.at \
--cc=lee.jones@linaro.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mediatek@lists.infradead.org \
--cc=linux-pm@vger.kernel.org \
--cc=linux-rtc@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=matthias.bgg@gmail.com \
--cc=ran.bi@mediatek.com \
--cc=rfontana@redhat.com \
--cc=robh+dt@kernel.org \
--cc=sean.wang@mediatek.com \
--cc=sre@kernel.org \
--cc=srv_heupstream@mediatek.com \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).