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Date: Thu, 28 Aug 2014 12:50:14 +0100
From: Lee Jones <lee.jones@...aro.org>
To: Krzysztof Kozlowski <k.kozlowski@...sung.com>
Cc: Sebastian Reichel <sre@...nel.org>,
Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
David Woodhouse <dwmw2@...radead.org>,
Samuel Ortiz <sameo@...ux.intel.com>,
linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
linux-pm@...r.kernel.org, Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Kyungmin Park <kyungmin.park@...sung.com>,
Marek Szyprowski <m.szyprowski@...sung.com>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: Re: [PATCH v4 1/8] mfd: max14577: Add defines for MAX77836 charger
On Wed, 27 Aug 2014, Krzysztof Kozlowski wrote:
> Prepare for adding support for MAX77836 charger to the max14577 charger
> driver by adding necessary new defines and prefixes to existing ones.
>
> The MAX77836 uses slightly different values for ChgTyp field of STATUS2
> register. On the MAX14577 value of 0x6 is reserved and 0x7 dead battery.
> On the MAX77836 the opposite:
> - 0x6 means special charger,
> - 0x7 is reserved.
> Regardless of these differences use one common enum
> max14577_muic_charger_type.
>
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> Cc: Kyungmin Park <kyungmin.park@...sung.com>
> ---
> include/linux/mfd/max14577-private.h | 54 ++++++++++++++++++++++++++----------
> 1 file changed, 40 insertions(+), 14 deletions(-)
Acked-by: Lee Jones <lee.jones@...aro.org>
> diff --git a/include/linux/mfd/max14577-private.h b/include/linux/mfd/max14577-private.h
> index 499253604026..d6f321699b89 100644
> --- a/include/linux/mfd/max14577-private.h
> +++ b/include/linux/mfd/max14577-private.h
> @@ -72,15 +72,33 @@ enum max14577_muic_reg {
> MAX14577_MUIC_REG_END,
> };
>
> +/*
> + * Combined charger types for max14577 and max77836.
> + *
> + * On max14577 three lower bits map to STATUS2/CHGTYP field.
> + * However the max77836 has different two last values of STATUS2/CHGTYP.
> + * To indicate the difference enum has two additional values for max77836.
> + * These values are just a register value bitwise OR with 0x8.
> + */
> enum max14577_muic_charger_type {
> - MAX14577_CHARGER_TYPE_NONE = 0,
> - MAX14577_CHARGER_TYPE_USB,
> - MAX14577_CHARGER_TYPE_DOWNSTREAM_PORT,
> - MAX14577_CHARGER_TYPE_DEDICATED_CHG,
> - MAX14577_CHARGER_TYPE_SPECIAL_500MA,
> - MAX14577_CHARGER_TYPE_SPECIAL_1A,
> - MAX14577_CHARGER_TYPE_RESERVED,
> - MAX14577_CHARGER_TYPE_DEAD_BATTERY = 7,
> + MAX14577_CHARGER_TYPE_NONE = 0x0,
> + MAX14577_CHARGER_TYPE_USB = 0x1,
> + MAX14577_CHARGER_TYPE_DOWNSTREAM_PORT = 0x2,
> + MAX14577_CHARGER_TYPE_DEDICATED_CHG = 0x3,
> + MAX14577_CHARGER_TYPE_SPECIAL_500MA = 0x4,
> + /* Special 1A or 2A charger */
> + MAX14577_CHARGER_TYPE_SPECIAL_1A = 0x5,
> + /* max14577: reserved, used on max77836 */
> + MAX14577_CHARGER_TYPE_RESERVED = 0x6,
> + /* max14577: dead-battery charing with maximum current 100mA */
> + MAX14577_CHARGER_TYPE_DEAD_BATTERY = 0x7,
> + /*
> + * max77836: special charger (bias on D+/D-),
> + * matches register value of 0x6
> + */
> + MAX77836_CHARGER_TYPE_SPECIAL_BIAS = 0xe,
> + /* max77836: reserved, register value 0x7 */
> + MAX77836_CHARGER_TYPE_RESERVED = 0xf,
> };
>
> /* MAX14577 interrupts */
> @@ -121,13 +139,15 @@ enum max14577_muic_charger_type {
> #define STATUS2_CHGTYP_SHIFT 0
> #define STATUS2_CHGDETRUN_SHIFT 3
> #define STATUS2_DCDTMR_SHIFT 4
> -#define STATUS2_DBCHG_SHIFT 5
> +#define MAX14577_STATUS2_DBCHG_SHIFT 5
> +#define MAX77836_STATUS2_DXOVP_SHIFT 5
> #define STATUS2_VBVOLT_SHIFT 6
> #define MAX77836_STATUS2_VIDRM_SHIFT 7
> #define STATUS2_CHGTYP_MASK (0x7 << STATUS2_CHGTYP_SHIFT)
> #define STATUS2_CHGDETRUN_MASK BIT(STATUS2_CHGDETRUN_SHIFT)
> #define STATUS2_DCDTMR_MASK BIT(STATUS2_DCDTMR_SHIFT)
> -#define STATUS2_DBCHG_MASK BIT(STATUS2_DBCHG_SHIFT)
> +#define MAX14577_STATUS2_DBCHG_MASK BIT(MAX14577_STATUS2_DBCHG_SHIFT)
> +#define MAX77836_STATUS2_DXOVP_MASK BIT(MAX77836_STATUS2_DXOVP_SHIFT)
> #define STATUS2_VBVOLT_MASK BIT(STATUS2_VBVOLT_SHIFT)
> #define MAX77836_STATUS2_VIDRM_MASK BIT(MAX77836_STATUS2_VIDRM_SHIFT)
>
> @@ -177,9 +197,11 @@ enum max14577_muic_charger_type {
> #define CTRL3_JIGSET_SHIFT 0
> #define CTRL3_BOOTSET_SHIFT 2
> #define CTRL3_ADCDBSET_SHIFT 4
> +#define CTRL3_WBTH_SHIFT 6
> #define CTRL3_JIGSET_MASK (0x3 << CTRL3_JIGSET_SHIFT)
> #define CTRL3_BOOTSET_MASK (0x3 << CTRL3_BOOTSET_SHIFT)
> #define CTRL3_ADCDBSET_MASK (0x3 << CTRL3_ADCDBSET_SHIFT)
> +#define CTRL3_WBTH_MASK (0x3 << CTRL3_WBTH_SHIFT)
>
> /* Slave addr = 0x4A: Charger */
> enum max14577_charger_reg {
> @@ -210,16 +232,20 @@ enum max14577_charger_reg {
> #define CDETCTRL1_CHGTYPMAN_SHIFT 1
> #define CDETCTRL1_DCDEN_SHIFT 2
> #define CDETCTRL1_DCD2SCT_SHIFT 3
> -#define CDETCTRL1_DCHKTM_SHIFT 4
> -#define CDETCTRL1_DBEXIT_SHIFT 5
> +#define MAX14577_CDETCTRL1_DCHKTM_SHIFT 4
> +#define MAX77836_CDETCTRL1_CDLY_SHIFT 4
> +#define MAX14577_CDETCTRL1_DBEXIT_SHIFT 5
> +#define MAX77836_CDETCTRL1_DCDCPL_SHIFT 5
> #define CDETCTRL1_DBIDLE_SHIFT 6
> #define CDETCTRL1_CDPDET_SHIFT 7
> #define CDETCTRL1_CHGDETEN_MASK BIT(CDETCTRL1_CHGDETEN_SHIFT)
> #define CDETCTRL1_CHGTYPMAN_MASK BIT(CDETCTRL1_CHGTYPMAN_SHIFT)
> #define CDETCTRL1_DCDEN_MASK BIT(CDETCTRL1_DCDEN_SHIFT)
> #define CDETCTRL1_DCD2SCT_MASK BIT(CDETCTRL1_DCD2SCT_SHIFT)
> -#define CDETCTRL1_DCHKTM_MASK BIT(CDETCTRL1_DCHKTM_SHIFT)
> -#define CDETCTRL1_DBEXIT_MASK BIT(CDETCTRL1_DBEXIT_SHIFT)
> +#define MAX14577_CDETCTRL1_DCHKTM_MASK BIT(MAX14577_CDETCTRL1_DCHKTM_SHIFT)
> +#define MAX77836_CDETCTRL1_CDDLY_MASK BIT(MAX77836_CDETCTRL1_CDDLY_SHIFT)
> +#define MAX14577_CDETCTRL1_DBEXIT_MASK BIT(MAX14577_CDETCTRL1_DBEXIT_SHIFT)
> +#define MAX77836_CDETCTRL1_DCDCPL_MASK BIT(MAX77836_CDETCTRL1_DCDCPL_SHIFT)
> #define CDETCTRL1_DBIDLE_MASK BIT(CDETCTRL1_DBIDLE_SHIFT)
> #define CDETCTRL1_CDPDET_MASK BIT(CDETCTRL1_CDPDET_SHIFT)
>
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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