linux-kernel - Re: [PATCH] mfd: intel_soc_pmic_bxtwc: add bxt_wcove

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Message-ID: <20160809150609.GR5243@dell>
Date:	Tue, 9 Aug 2016 16:06:09 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Bin Gao <bin.gao@...ux.intel.com>
Cc:	Bin Gao <bin.gao@...el.com>,
	Chandra Sekhar Anagani <chandra.sekhar.anagani@...el.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mfd: intel_soc_pmic_bxtwc: add bxt_wcove_usbc device

On Wed, 20 Jul 2016, Bin Gao wrote:

> The Intel Whiskey Cove PMIC includes several function units, e.g.
> ADC, thermal, USB Type-C, GPIO, etc. The corresponding device has
> to be created in the mfd driver(intel_soc_pmic_bxtwc.c). This change
> adds the USB Type-c device.
> 
> Signed-off-by: Bin Gao <bin.gao@...el.com>
> ---
>  drivers/mfd/intel_soc_pmic_bxtwc.c | 23 ++++++++++++++++++++++-
>  1 file changed, 22 insertions(+), 1 deletion(-)

Applied, thanks.

> diff --git a/drivers/mfd/intel_soc_pmic_bxtwc.c b/drivers/mfd/intel_soc_pmic_bxtwc.c
> index b942876..43e54b7 100644
> --- a/drivers/mfd/intel_soc_pmic_bxtwc.c
> +++ b/drivers/mfd/intel_soc_pmic_bxtwc.c
> @@ -47,6 +47,8 @@
>  #define BXTWC_MIRQLVL1		0x4E0E
>  #define BXTWC_MPWRTNIRQ		0x4E0F
>  
> +#define BXTWC_MIRQLVL1_MCHGR	BIT(5)
> +
>  #define BXTWC_MTHRM0IRQ		0x4E12
>  #define BXTWC_MTHRM1IRQ		0x4E13
>  #define BXTWC_MTHRM2IRQ		0x4E14
> @@ -109,7 +111,7 @@ static const struct regmap_irq bxtwc_regmap_irqs_level2[] = {
>  	REGMAP_IRQ_REG(BXTWC_THRM2_IRQ, 2, 0xff),
>  	REGMAP_IRQ_REG(BXTWC_BCU_IRQ, 3, 0x1f),
>  	REGMAP_IRQ_REG(BXTWC_ADC_IRQ, 4, 0xff),
> -	REGMAP_IRQ_REG(BXTWC_CHGR0_IRQ, 5, 0x1f),
> +	REGMAP_IRQ_REG(BXTWC_CHGR0_IRQ, 5, 0x3f),
>  	REGMAP_IRQ_REG(BXTWC_CHGR1_IRQ, 6, 0x1f),
>  	REGMAP_IRQ_REG(BXTWC_GPIO0_IRQ, 7, 0xff),
>  	REGMAP_IRQ_REG(BXTWC_GPIO1_IRQ, 8, 0x3f),
> @@ -143,6 +145,10 @@ static struct resource adc_resources[] = {
>  	DEFINE_RES_IRQ_NAMED(BXTWC_ADC_IRQ, "ADC"),
>  };
>  
> +static struct resource usbc_resources[] = {
> +	DEFINE_RES_IRQ_NAMED(BXTWC_CHGR0_IRQ, "USBC"),
> +};
> +
>  static struct resource charger_resources[] = {
>  	DEFINE_RES_IRQ_NAMED(BXTWC_CHGR0_IRQ, "CHARGER"),
>  	DEFINE_RES_IRQ_NAMED(BXTWC_CHGR1_IRQ, "CHARGER1"),
> @@ -170,6 +176,11 @@ static struct mfd_cell bxt_wc_dev[] = {
>  		.resources = thermal_resources,
>  	},
>  	{
> +		.name = "bxt_wcove_usbc",
> +		.num_resources = ARRAY_SIZE(usbc_resources),
> +		.resources = usbc_resources,
> +	},
> +	{
>  		.name = "bxt_wcove_ext_charger",
>  		.num_resources = ARRAY_SIZE(charger_resources),
>  		.resources = charger_resources,
> @@ -403,6 +414,16 @@ static int bxtwc_probe(struct platform_device *pdev)
>  		goto err_sysfs;
>  	}
>  
> +	/*
> +	 * There is known hw bug. Upon reset BIT 5 of register
> +	 * BXTWC_CHGR_LVL1_IRQ is 0 which is the expected value. However,
> +	 * later it's set to 1(masked) automatically by hardware. So we
> +	 * have the software workaround here to unmaksed it in order to let
> +	 * charger interrutp work.
> +	 */
> +	regmap_update_bits(pmic->regmap, BXTWC_MIRQLVL1,
> +				BXTWC_MIRQLVL1_MCHGR, 0);
> +
>  	return 0;
>  
>  err_sysfs:

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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