linux-kernel - Re: [PATCH v2 3/3] ACPI / PMIC: Add opregion driver for Intel Dollar Cove TI PMIC

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Date:   Thu, 24 Aug 2017 11:40:43 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Mika Westerberg <mika.westerberg@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, Lee Jones <lee.jones@...aro.org>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Johannes Stezenbach <js@...21.net>,
        platform-driver-x86@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [PATCH v2 3/3] ACPI / PMIC: Add opregion driver for Intel Dollar Cove TI PMIC

On Thu, 24 Aug 2017 11:14:53 +0200,
Mika Westerberg wrote:
> 
> On Thu, Aug 24, 2017 at 10:11:41AM +0200, Takashi Iwai wrote:
> > This patch adds the opregion driver for Dollar Cove TI PMIC on Intel
> > Cherry Trail devices.  The patch is based on the original work by
> > Intel, found at:
> >       https://github.com/01org/ProductionKernelQuilts
> > with many cleanups and rewrites.
> > 
> > The driver is currently provided only as built-in to follow other
> > PMIC opregion drivers convention.
> > 
> > The re-enumeration of devices at probe is required for fixing the
> > issues on HP x2 210 G2.  See bug#195689.
> > 
> > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=193891
> > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=195689
> > Signed-off-by: Takashi Iwai <tiwai@...e.de>
> > ---
> > v1->v2:
> > * get_raw_temp cleanup in opregion driver, mention about register
> >   endianess
> > 
> >  drivers/acpi/Kconfig                 |   6 ++
> >  drivers/acpi/Makefile                |   1 +
> >  drivers/acpi/pmic/intel_pmic_dc_ti.c | 139 +++++++++++++++++++++++++++++++++++
> >  3 files changed, 146 insertions(+)
> >  create mode 100644 drivers/acpi/pmic/intel_pmic_dc_ti.c
> > 
> > diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
> > index 1ce52f84dc23..9da8dcefde7b 100644
> > --- a/drivers/acpi/Kconfig
> > +++ b/drivers/acpi/Kconfig
> > @@ -521,6 +521,12 @@ config CHT_WC_PMIC_OPREGION
> >  	help
> >  	  This config adds ACPI operation region support for CHT Whiskey Cove PMIC.
> >  
> > +config DC_TI_PMIC_OPREGION
> > +	bool "ACPI operation region support for Dollar Cove TI PMIC"
> > +	depends on INTEL_SOC_PMIC_DC_TI
> > +	help
> > +	  This config adds ACPI operation region support for Dollar Cove TI PMIC.
> > +
> >  endif
> >  
> >  config ACPI_CONFIGFS
> > diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
> > index b1aacfc62b1f..0a9008b971af 100644
> > --- a/drivers/acpi/Makefile
> > +++ b/drivers/acpi/Makefile
> > @@ -103,6 +103,7 @@ obj-$(CONFIG_CRC_PMIC_OPREGION) += pmic/intel_pmic_crc.o
> >  obj-$(CONFIG_XPOWER_PMIC_OPREGION) += pmic/intel_pmic_xpower.o
> >  obj-$(CONFIG_BXT_WC_PMIC_OPREGION) += pmic/intel_pmic_bxtwc.o
> >  obj-$(CONFIG_CHT_WC_PMIC_OPREGION) += pmic/intel_pmic_chtwc.o
> > +obj-$(CONFIG_DC_TI_PMIC_OPREGION) += pmic/intel_pmic_dc_ti.o
> >  
> >  obj-$(CONFIG_ACPI_CONFIGFS)	+= acpi_configfs.o
> >  
> > diff --git a/drivers/acpi/pmic/intel_pmic_dc_ti.c b/drivers/acpi/pmic/intel_pmic_dc_ti.c
> > new file mode 100644
> > index 000000000000..a2be1270eeeb
> > --- /dev/null
> > +++ b/drivers/acpi/pmic/intel_pmic_dc_ti.c
> > @@ -0,0 +1,139 @@
> > +/*
> > + * Dollar Cove TI PMIC operation region driver
> > + * Copyright (C) 2014 Intel Corporation. All rights reserved.
> > + *
> > + * Rewritten and cleaned up
> > + * Copyright (C) 2017 Takashi Iwai <tiwai@...e.de>
> > + */
> > +
> > +#include <linux/acpi.h>
> > +#include <linux/init.h>
> > +#include <linux/mfd/intel_soc_pmic.h>
> > +#include <linux/platform_device.h>
> > +#include "intel_pmic.h"
> > +
> > +/* registers stored in 16bit BE (high:low, total 10bit) */
> > +#define DC_TI_VBAT	0x54
> > +#define DC_TI_DIETEMP	0x56
> > +#define DC_TI_BPTHERM	0x58
> > +#define DC_TI_GPADC	0x5a
> > +
> > +static struct pmic_table dc_ti_power_table[] = {
> 
> const?
> 
> > +	{ .address = 0x00, .reg = 0x41 },
> > +	{ .address = 0x04, .reg = 0x42 },
> > +	{ .address = 0x08, .reg = 0x43 },
> > +	{ .address = 0x0c, .reg = 0x45 },
> > +	{ .address = 0x10, .reg = 0x46 },
> > +	{ .address = 0x14, .reg = 0x47 },
> > +	{ .address = 0x18, .reg = 0x48 },
> > +	{ .address = 0x1c, .reg = 0x49 },
> > +	{ .address = 0x20, .reg = 0x4a },
> > +	{ .address = 0x24, .reg = 0x4b },
> > +	{ .address = 0x28, .reg = 0x4c },
> > +	{ .address = 0x2c, .reg = 0x4d },
> > +	{ .address = 0x30, .reg = 0x4e },
> > +};
> > +
> > +static struct pmic_table dc_ti_thermal_table[] = {
> 
> const?

Oh yeah, I was too lazy.  Will cover up in the next round.


thanks,

Takashi