From: Chen-Yu Tsai <wens@csie.org>
To: Jagan Teki <jagan@amarulasolutions.com>
Cc: devicetree <devicetree@vger.kernel.org>,
David Airlie <airlied@linux.ie>,
linux-kernel <linux-kernel@vger.kernel.org>,
Maxime Ripard <mripard@kernel.org>,
linux-sunxi <linux-sunxi@googlegroups.com>,
dri-devel <dri-devel@lists.freedesktop.org>,
Daniel Vetter <daniel@ffwll.ch>,
Michael Trimarchi <michael@amarulasolutions.com>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
Icenowy Zheng <icenowy@aosc.io>
Subject: Re: [PATCH v11 5/7] drm/sun4i: sun6i_mipi_dsi: Add VCC-DSI regulator support
Date: Thu, 3 Oct 2019 14:55:46 +0800 [thread overview]
Message-ID: <CAGb2v64RJeHXSDknPvH3RrDLqPzSvR-p2k2vA73Zt1xsOd5TSw@mail.gmail.com> (raw)
In-Reply-To: <20191003064527.15128-6-jagan@amarulasolutions.com>
On Thu, Oct 3, 2019 at 2:46 PM Jagan Teki <jagan@amarulasolutions.com> wrote:
>
> Allwinner MIPI DSI controllers are supplied with SoC
> DSI power rails via VCC-DSI pin.
>
> Add support for this supply pin by adding voltage
> regulator handling code to MIPI DSI driver.
>
> Tested-by: Merlijn Wajer <merlijn@wizzup.org>
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> ---
> drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 14 ++++++++++++++
> drivers/gpu/drm/sun4i/sun6i_mipi_dsi.h | 2 ++
> 2 files changed, 16 insertions(+)
>
> diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
> index 446dc56cc44b..fe9a3667f3a1 100644
> --- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
> +++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
> @@ -1110,6 +1110,12 @@ static int sun6i_dsi_probe(struct platform_device *pdev)
> return PTR_ERR(base);
> }
>
> + dsi->regulator = devm_regulator_get(dev, "vcc-dsi");
> + if (IS_ERR(dsi->regulator)) {
> + dev_err(dev, "Couldn't get VCC-DSI supply\n");
> + return PTR_ERR(dsi->regulator);
> + }
> +
> dsi->regs = devm_regmap_init_mmio_clk(dev, "bus", base,
> &sun6i_dsi_regmap_config);
> if (IS_ERR(dsi->regs)) {
> @@ -1183,6 +1189,13 @@ static int sun6i_dsi_remove(struct platform_device *pdev)
> static int __maybe_unused sun6i_dsi_runtime_resume(struct device *dev)
> {
> struct sun6i_dsi *dsi = dev_get_drvdata(dev);
> + int err;
> +
> + err = regulator_enable(dsi->regulator);
> + if (err) {
> + dev_err(dsi->dev, "failed to enable VCC-DSI supply: %d\n", err);
> + return err;
> + }
>
> reset_control_deassert(dsi->reset);
> clk_prepare_enable(dsi->mod_clk);
> @@ -1215,6 +1228,7 @@ static int __maybe_unused sun6i_dsi_runtime_suspend(struct device *dev)
>
> clk_disable_unprepare(dsi->mod_clk);
> reset_control_assert(dsi->reset);
> + regulator_disable(dsi->regulator);
>
> return 0;
> }
> diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.h b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.h
> index 5c3ad5be0690..a01d44e9e461 100644
> --- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.h
> +++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.h
> @@ -12,6 +12,7 @@
> #include <drm/drm_connector.h>
> #include <drm/drm_encoder.h>
> #include <drm/drm_mipi_dsi.h>
> +#include <linux/regulator/consumer.h>
You don't need to include the header file since you are only
including a pointer to the struct, and nothing else.
Otherwise,
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
>
> #define SUN6I_DSI_TCON_DIV 4
>
> @@ -23,6 +24,7 @@ struct sun6i_dsi {
> struct clk *bus_clk;
> struct clk *mod_clk;
> struct regmap *regs;
> + struct regulator *regulator;
> struct reset_control *reset;
> struct phy *dphy;
>
> --
> 2.18.0.321.gffc6fa0e3
>
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next prev parent reply other threads:[~2019-10-03 6:56 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-03 6:45 [PATCH v11 0/7] drm/sun4i: dsi: Fixes/updates (A33 reworked!) Jagan Teki
2019-10-03 6:45 ` [PATCH v11 1/7] drm/sun4i: dsi: Fix TCON DRQ set bits Jagan Teki
2019-10-03 6:51 ` Icenowy Zheng
2019-10-03 6:55 ` [linux-sunxi] " Jagan Teki
2019-10-03 13:17 ` Maxime Ripard
2019-10-03 15:16 ` Jagan Teki
2019-10-07 11:19 ` Maxime Ripard
2019-10-03 6:45 ` [PATCH v11 2/7] drm/sun4i: dsi: Update start value in video start delay Jagan Teki
2019-10-03 6:52 ` Icenowy Zheng
2019-10-03 6:45 ` [PATCH v11 3/7] drm/sun4i: dsi: Fix video start delay computation Jagan Teki
2019-10-03 6:45 ` [PATCH v11 4/7] dt-bindings: sun6i-dsi: Add VCC-DSI supply property Jagan Teki
2019-10-03 11:47 ` Maxime Ripard
2019-10-03 13:04 ` Icenowy Zheng
2019-10-03 13:30 ` Maxime Ripard
2019-10-03 6:45 ` [PATCH v11 5/7] drm/sun4i: sun6i_mipi_dsi: Add VCC-DSI regulator support Jagan Teki
2019-10-03 6:55 ` Chen-Yu Tsai [this message]
2019-10-03 7:01 ` Jagan Teki
2019-10-03 11:46 ` Maxime Ripard
2019-10-03 6:45 ` [PATCH v11 6/7] drm/panel: Add Bananapi S070WV20-CT16 ICN6211 MIPI-DSI to RGB bridge Jagan Teki
2019-10-03 6:50 ` Jagan Teki
2019-10-03 6:45 ` [PATCH v11 7/7] ARM: dts: sun8i: bananapi-m2m: Enable Bananapi S070WV20-CT16 DSI panel Jagan Teki
2019-10-03 6:50 ` Jagan Teki
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