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Message-ID: <Y9KGKlhiVjFCSaPs@google.com>
Date: Thu, 26 Jan 2023 13:54:50 +0000
From: Lee Jones <lee@...nel.org>
To: Martin Botka <martin.botka@...ainline.org>
Cc: Andre Przywara <andre.przywara@....com>,
Konrad Dybcio <konrad.dybcio@...ainline.org>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...ainline.org>,
Marijn Suijten <marijn.suijten@...ainline.org>,
Jami Kettunen <jamipkettunen@...ainline.org>,
Paul Bouchara <paul.bouchara@...ainline.org>,
Jan Trmal <jtrmal@...il.com>,
Jernej Skrabec <jernej.skrabec@...il.com>,
Samuel Holland <samuel@...lland.org>,
Martin Botka <martin.botka1@...il.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Chen-Yu Tsai <wens@...e.org>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 2/3] mfd: axp20x: Add support for AXP313a PMIC
On Wed, 18 Jan 2023, Martin Botka wrote:
> The AXP313a is a PMIC chip produced by X-Powers, it can be connected via
> an I2C bus.
> The name AXP1530 seems to appear as well, and this is what is used in
> the BSP driver. From all we know it's the same chip, just a different
> name. However we have only seen AXP313a chips in the wild, so go with
> this name.
>
> Compared to the other AXP PMICs it's a rather simple affair: just three
> DCDC converters, three LDOs, and no battery charging support.
>
> Describe the regmap and the MFD bits, along with the registers exposed
> via I2C. Eventually advertise the device using the new compatible
> string.
>
> Signed-off-by: Martin Botka <martin.botka@...ainline.org>
> Signed-off-by: Andre Przywara <andre.przywara@....com>
> ---
> drivers/mfd/axp20x-i2c.c | 2 ++
> drivers/mfd/axp20x.c | 61 ++++++++++++++++++++++++++++++++++++++
> include/linux/mfd/axp20x.h | 32 ++++++++++++++++++++
> 3 files changed, 95 insertions(+)
>
> diff --git a/drivers/mfd/axp20x-i2c.c b/drivers/mfd/axp20x-i2c.c
> index f49fbd307958..f061177cb18e 100644
> --- a/drivers/mfd/axp20x-i2c.c
> +++ b/drivers/mfd/axp20x-i2c.c
> @@ -63,6 +63,7 @@ static const struct of_device_id axp20x_i2c_of_match[] = {
> { .compatible = "x-powers,axp209", .data = (void *)AXP209_ID },
> { .compatible = "x-powers,axp221", .data = (void *)AXP221_ID },
> { .compatible = "x-powers,axp223", .data = (void *)AXP223_ID },
> + { .compatible = "x-powers,axp313a", .data = (void *)AXP313A_ID},
Nit: Formatting error at the end of the line.
> { .compatible = "x-powers,axp803", .data = (void *)AXP803_ID },
> { .compatible = "x-powers,axp806", .data = (void *)AXP806_ID },
> { },
> @@ -76,6 +77,7 @@ static const struct i2c_device_id axp20x_i2c_id[] = {
> { "axp209", 0 },
> { "axp221", 0 },
> { "axp223", 0 },
> + { "axp313a", 0 },
> { "axp803", 0 },
> { "axp806", 0 },
> { },
> diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
> index 01a6bbb6d266..ff15775f3c27 100644
> --- a/drivers/mfd/axp20x.c
> +++ b/drivers/mfd/axp20x.c
> @@ -39,6 +39,7 @@ static const char * const axp20x_model_names[] = {
> "AXP221",
> "AXP223",
> "AXP288",
> + "AXP313a",
> "AXP803",
> "AXP806",
> "AXP809",
> @@ -154,6 +155,24 @@ static const struct regmap_range axp806_writeable_ranges[] = {
> regmap_reg_range(AXP806_REG_ADDR_EXT, AXP806_REG_ADDR_EXT),
> };
>
> +static const struct regmap_range axp313a_writeable_ranges[] = {
> + regmap_reg_range(AXP313A_ON_INDICATE, AXP313A_IRQ_STATE),
> +};
> +
> +static const struct regmap_range axp313a_volatile_ranges[] = {
> + regmap_reg_range(AXP313A_ON_INDICATE, AXP313A_IRQ_STATE),
> +};
> +
> +static const struct regmap_access_table axp313a_writeable_table = {
> + .yes_ranges = axp313a_writeable_ranges,
> + .n_yes_ranges = ARRAY_SIZE(axp313a_writeable_ranges),
> +};
> +
> +static const struct regmap_access_table axp313a_volatile_table = {
> + .yes_ranges = axp313a_volatile_ranges,
> + .n_yes_ranges = ARRAY_SIZE(axp313a_volatile_ranges),
> +};
> +
> static const struct regmap_range axp806_volatile_ranges[] = {
> regmap_reg_range(AXP20X_IRQ1_STATE, AXP20X_IRQ2_STATE),
> };
> @@ -272,6 +291,15 @@ static const struct regmap_config axp288_regmap_config = {
> .cache_type = REGCACHE_RBTREE,
> };
>
> +static const struct regmap_config axp313a_regmap_config = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .wr_table = &axp313a_writeable_table,
> + .volatile_table = &axp313a_volatile_table,
> + .max_register = AXP313A_IRQ_STATE,
> + .cache_type = REGCACHE_RBTREE,
> +};
> +
> static const struct regmap_config axp806_regmap_config = {
> .reg_bits = 8,
> .val_bits = 8,
> @@ -415,6 +443,16 @@ static const struct regmap_irq axp288_regmap_irqs[] = {
> INIT_REGMAP_IRQ(AXP288, BC_USB_CHNG, 5, 1),
> };
>
> +static const struct regmap_irq axp313a_regmap_irqs[] = {
> + INIT_REGMAP_IRQ(AXP313A, PEK_RIS_EDGE, 0, 7),
> + INIT_REGMAP_IRQ(AXP313A, PEK_FAL_EDGE, 0, 6),
> + INIT_REGMAP_IRQ(AXP313A, PEK_SHORT, 0, 5),
> + INIT_REGMAP_IRQ(AXP313A, PEK_LONG, 0, 4),
> + INIT_REGMAP_IRQ(AXP313A, DCDC3_V_LOW, 0, 3),
> + INIT_REGMAP_IRQ(AXP313A, DCDC2_V_LOW, 0, 2),
> + INIT_REGMAP_IRQ(AXP313A, DIE_TEMP_HIGH, 0, 0),
> +};
> +
> static const struct regmap_irq axp803_regmap_irqs[] = {
> INIT_REGMAP_IRQ(AXP803, ACIN_OVER_V, 0, 7),
> INIT_REGMAP_IRQ(AXP803, ACIN_PLUGIN, 0, 6),
> @@ -548,6 +586,17 @@ static const struct regmap_irq_chip axp288_regmap_irq_chip = {
>
> };
>
> +static const struct regmap_irq_chip axp313a_regmap_irq_chip = {
> + .name = "axp313a_irq_chip",
> + .status_base = AXP313A_IRQ_STATE,
> + .ack_base = AXP313A_IRQ_STATE,
> + .unmask_base = AXP313A_IRQ_EN,
> + .init_ack_masked = true,
> + .irqs = axp313a_regmap_irqs,
> + .num_irqs = ARRAY_SIZE(axp313a_regmap_irqs),
> + .num_regs = 1,
> +};
> +
> static const struct regmap_irq_chip axp803_regmap_irq_chip = {
> .name = "axp803",
> .status_base = AXP20X_IRQ1_STATE,
> @@ -676,6 +725,12 @@ static const struct mfd_cell axp152_cells[] = {
> },
> };
>
> +static struct mfd_cell axp313a_cells[] = {
> + {
> + .name = "axp20x-regulator",
> + },
> +};
Where are the other devices that make this an MFD?
Also, please use: MFD_CELL_NAME()
> static const struct resource axp288_adc_resources[] = {
> DEFINE_RES_IRQ_NAMED(AXP288_IRQ_GPADC, "GPADC"),
> };
> @@ -892,6 +947,12 @@ int axp20x_match_device(struct axp20x_dev *axp20x)
> axp20x->regmap_irq_chip = &axp288_regmap_irq_chip;
> axp20x->irq_flags = IRQF_TRIGGER_LOW;
> break;
> + case AXP313A_ID:
> + axp20x->nr_cells = ARRAY_SIZE(axp313a_cells);
> + axp20x->cells = axp313a_cells;
> + axp20x->regmap_cfg = &axp313a_regmap_config;
> + axp20x->regmap_irq_chip = &axp313a_regmap_irq_chip;
> + break;
> case AXP803_ID:
> axp20x->nr_cells = ARRAY_SIZE(axp803_cells);
> axp20x->cells = axp803_cells;
> diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h
> index 2058194807bd..12e4fc3e8391 100644
> --- a/include/linux/mfd/axp20x.h
> +++ b/include/linux/mfd/axp20x.h
> @@ -17,6 +17,7 @@ enum axp20x_variants {
> AXP221_ID,
> AXP223_ID,
> AXP288_ID,
> + AXP313A_ID,
> AXP803_ID,
> AXP806_ID,
> AXP809_ID,
> @@ -91,6 +92,17 @@ enum axp20x_variants {
> #define AXP22X_ALDO3_V_OUT 0x2a
> #define AXP22X_CHRG_CTRL3 0x35
>
> +#define AXP313A_ON_INDICATE 0x00
> +#define AXP313A_OUTPUT_CONTROL 0x10
> +#define AXP313A_DCDC1_CONRTOL 0x13
> +#define AXP313A_DCDC2_CONRTOL 0x14
> +#define AXP313A_DCDC3_CONRTOL 0x15
> +#define AXP313A_ALDO1_CONRTOL 0x16
> +#define AXP313A_DLDO1_CONRTOL 0x17
> +#define AXP313A_OUTPUT_MONITOR 0x1d
> +#define AXP313A_IRQ_EN 0x20
> +#define AXP313A_IRQ_STATE 0x21
> +
> #define AXP806_STARTUP_SRC 0x00
> #define AXP806_CHIP_ID 0x03
> #define AXP806_PWR_OUT_CTRL1 0x10
> @@ -322,6 +334,16 @@ enum {
> AXP22X_REG_ID_MAX,
> };
>
> +enum {
> + AXP313A_DCDC1 = 0,
> + AXP313A_DCDC2,
> + AXP313A_DCDC3,
> + AXP313A_LDO1,
> + AXP313A_LDO2,
> + AXP313A_RTC_LDO,
> + AXP313A_REG_ID_MAX,
> +};
> +
> enum {
> AXP806_DCDCA = 0,
> AXP806_DCDCB,
> @@ -548,6 +570,16 @@ enum axp288_irqs {
> AXP288_IRQ_BC_USB_CHNG,
> };
>
> +enum axp313a_irqs {
> + AXP313A_IRQ_DIE_TEMP_HIGH,
> + AXP313A_IRQ_DCDC2_V_LOW = 2,
> + AXP313A_IRQ_DCDC3_V_LOW,
> + AXP313A_IRQ_PEK_LONG,
> + AXP313A_IRQ_PEK_SHORT,
> + AXP313A_IRQ_PEK_FAL_EDGE,
> + AXP313A_IRQ_PEK_RIS_EDGE,
> +};
> +
> enum axp803_irqs {
> AXP803_IRQ_ACIN_OVER_V = 1,
> AXP803_IRQ_ACIN_PLUGIN,
> --
> 2.39.0
>
--
Lee Jones [李琼斯]
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