[Freedreno] [PATCH 2/2] drm/msm/hdmi: switch to drm_bridge_connector
Dmitry Baryshkov
dmitry.baryshkov at linaro.org
Sat Oct 16 14:21:00 UTC 2021
On Sat, 16 Oct 2021 at 01:25, <abhinavk at codeaurora.org> wrote:
>
> Hi Dmitry
>
> On 2021-10-14 17:11, Dmitry Baryshkov wrote:
> > Merge old hdmi_bridge and hdmi_connector implementations. Use
> > drm_bridge_connector instead.
> >
> Can you please comment on the validation done on this change?
> Has basic bootup been verified on db820c as thats the only platform
> which shall use this.
Yes, this has been developed and validated on db820c
>
> > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
> > ---
> > drivers/gpu/drm/msm/Makefile | 2 +-
> > drivers/gpu/drm/msm/hdmi/hdmi.c | 12 +-
> > drivers/gpu/drm/msm/hdmi/hdmi.h | 19 ++-
> > drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 81 ++++++++-
> > .../msm/hdmi/{hdmi_connector.c => hdmi_hpd.c} | 154 ++----------------
> > 5 files changed, 109 insertions(+), 159 deletions(-)
> > rename drivers/gpu/drm/msm/hdmi/{hdmi_connector.c => hdmi_hpd.c} (62%)
> >
> > diff --git a/drivers/gpu/drm/msm/Makefile
> > b/drivers/gpu/drm/msm/Makefile
> > index 904535eda0c4..91b09cda8a9c 100644
> > --- a/drivers/gpu/drm/msm/Makefile
> > +++ b/drivers/gpu/drm/msm/Makefile
> > @@ -19,7 +19,7 @@ msm-y := \
> > hdmi/hdmi.o \
> > hdmi/hdmi_audio.o \
> > hdmi/hdmi_bridge.o \
> > - hdmi/hdmi_connector.o \
> > + hdmi/hdmi_hpd.o \
> > hdmi/hdmi_i2c.o \
> > hdmi/hdmi_phy.o \
> > hdmi/hdmi_phy_8960.o \
> > diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c
> > b/drivers/gpu/drm/msm/hdmi/hdmi.c
> > index db17a000d968..d1cf4df7188c 100644
> > --- a/drivers/gpu/drm/msm/hdmi/hdmi.c
> > +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
> > @@ -8,6 +8,8 @@
> > #include <linux/of_irq.h>
> > #include <linux/of_gpio.h>
> >
> > +#include <drm/drm_bridge_connector.h>
> > +
> > #include <sound/hdmi-codec.h>
> > #include "hdmi.h"
> >
> > @@ -41,7 +43,7 @@ static irqreturn_t msm_hdmi_irq(int irq, void
> > *dev_id)
> > struct hdmi *hdmi = dev_id;
> >
> > /* Process HPD: */
> > - msm_hdmi_connector_irq(hdmi->connector);
> > + msm_hdmi_hpd_irq(hdmi->bridge);
> >
> > /* Process DDC: */
> > msm_hdmi_i2c_irq(hdmi->i2c);
> > @@ -283,7 +285,7 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi,
> > goto fail;
> > }
> >
> > - hdmi->connector = msm_hdmi_connector_init(hdmi);
> > + hdmi->connector = drm_bridge_connector_init(hdmi->dev, encoder);
> > if (IS_ERR(hdmi->connector)) {
> > ret = PTR_ERR(hdmi->connector);
> > DRM_DEV_ERROR(dev->dev, "failed to create HDMI connector: %d\n",
> > ret);
> > @@ -291,6 +293,8 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi,
> > goto fail;
> > }
> >
> > + drm_connector_attach_encoder(hdmi->connector, hdmi->encoder);
> > +
> > hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
> > if (hdmi->irq < 0) {
> > ret = hdmi->irq;
> > @@ -307,7 +311,9 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi,
> > goto fail;
> > }
> >
> > - ret = msm_hdmi_hpd_enable(hdmi->connector);
> > + drm_bridge_connector_enable_hpd(hdmi->connector);
> > +
> > + ret = msm_hdmi_hpd_enable(hdmi->bridge);
> > if (ret < 0) {
> > DRM_DEV_ERROR(&hdmi->pdev->dev, "failed to enable HPD: %d\n", ret);
> > goto fail;
> > diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h
> > b/drivers/gpu/drm/msm/hdmi/hdmi.h
> > index 82261078c6b1..736f348befb3 100644
> > --- a/drivers/gpu/drm/msm/hdmi/hdmi.h
> > +++ b/drivers/gpu/drm/msm/hdmi/hdmi.h
> > @@ -114,6 +114,13 @@ struct hdmi_platform_config {
> > struct hdmi_gpio_data gpios[HDMI_MAX_NUM_GPIO];
> > };
> >
> > +struct hdmi_bridge {
> > + struct drm_bridge base;
> > + struct hdmi *hdmi;
> > + struct work_struct hpd_work;
> > +};
> > +#define to_hdmi_bridge(x) container_of(x, struct hdmi_bridge, base)
> > +
> > void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on);
> >
> > static inline void hdmi_write(struct hdmi *hdmi, u32 reg, u32 data)
> > @@ -230,13 +237,11 @@ void msm_hdmi_audio_set_sample_rate(struct hdmi
> > *hdmi, int rate);
> > struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi);
> > void msm_hdmi_bridge_destroy(struct drm_bridge *bridge);
> >
> > -/*
> > - * hdmi connector:
> > - */
> > -
> > -void msm_hdmi_connector_irq(struct drm_connector *connector);
> > -struct drm_connector *msm_hdmi_connector_init(struct hdmi *hdmi);
> > -int msm_hdmi_hpd_enable(struct drm_connector *connector);
> > +void msm_hdmi_hpd_irq(struct drm_bridge *bridge);
> > +enum drm_connector_status msm_hdmi_bridge_detect(
> > + struct drm_bridge *bridge);
> > +int msm_hdmi_hpd_enable(struct drm_bridge *bridge);
> > +void msm_hdmi_hpd_disable(struct hdmi_bridge *hdmi_bridge);
> >
> > /*
> > * i2c adapter for ddc:
> > diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
> > b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
> > index f04eb4a70f0d..211b73dddf65 100644
> > --- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
> > +++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
> > @@ -5,17 +5,16 @@
> > */
> >
> > #include <linux/delay.h>
> > +#include <drm/drm_bridge_connector.h>
> >
> > +#include "msm_kms.h"
> > #include "hdmi.h"
> >
> > -struct hdmi_bridge {
> > - struct drm_bridge base;
> > - struct hdmi *hdmi;
> > -};
> > -#define to_hdmi_bridge(x) container_of(x, struct hdmi_bridge, base)
> > -
> > void msm_hdmi_bridge_destroy(struct drm_bridge *bridge)
> > {
> > + struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
> > +
> > + msm_hdmi_hpd_disable(hdmi_bridge);
> > }
> >
> > static void msm_hdmi_power_on(struct drm_bridge *bridge)
> > @@ -251,14 +250,76 @@ static void msm_hdmi_bridge_mode_set(struct
> > drm_bridge *bridge,
> > msm_hdmi_audio_update(hdmi);
> > }
> >
> > +static struct edid *msm_hdmi_bridge_get_edid(struct drm_bridge
> > *bridge,
> > + struct drm_connector *connector)
> > +{
> > + struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
> > + struct hdmi *hdmi = hdmi_bridge->hdmi;
> > + struct edid *edid;
> > + uint32_t hdmi_ctrl;
> > +
> > + hdmi_ctrl = hdmi_read(hdmi, REG_HDMI_CTRL);
> > + hdmi_write(hdmi, REG_HDMI_CTRL, hdmi_ctrl | HDMI_CTRL_ENABLE);
> > +
> > + edid = drm_get_edid(connector, hdmi->i2c);
> > +
> > + hdmi_write(hdmi, REG_HDMI_CTRL, hdmi_ctrl);
> > +
> > + hdmi->hdmi_mode = drm_detect_hdmi_monitor(edid);
> > +
> > + return edid;
> > +}
> > +
> > +static enum drm_mode_status msm_hdmi_bridge_mode_valid(struct
> > drm_bridge *bridge,
> > + const struct drm_display_info *info,
> > + const struct drm_display_mode *mode)
> > +{
> > + struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
> > + struct hdmi *hdmi = hdmi_bridge->hdmi;
> > + const struct hdmi_platform_config *config = hdmi->config;
> > + struct msm_drm_private *priv = bridge->dev->dev_private;
> > + struct msm_kms *kms = priv->kms;
> > + long actual, requested;
> > +
> > + requested = 1000 * mode->clock;
> > + actual = kms->funcs->round_pixclk(kms,
> > + requested, hdmi_bridge->hdmi->encoder);
> > +
> > + /* for mdp5/apq8074, we manage our own pixel clk (as opposed to
> > + * mdp4/dtv stuff where pixel clk is assigned to mdp/encoder
> > + * instead):
> > + */
> > + if (config->pwr_clk_cnt > 0)
> > + actual = clk_round_rate(hdmi->pwr_clks[0], actual);
> > +
> > + DBG("requested=%ld, actual=%ld", requested, actual);
> > +
> > + if (actual != requested)
> > + return MODE_CLOCK_RANGE;
> > +
> > + return 0;
> > +}
> > +
> > static const struct drm_bridge_funcs msm_hdmi_bridge_funcs = {
> > .pre_enable = msm_hdmi_bridge_pre_enable,
> > .enable = msm_hdmi_bridge_enable,
> > .disable = msm_hdmi_bridge_disable,
> > .post_disable = msm_hdmi_bridge_post_disable,
> > .mode_set = msm_hdmi_bridge_mode_set,
> > + .mode_valid = msm_hdmi_bridge_mode_valid,
> > + .get_edid = msm_hdmi_bridge_get_edid,
> > + .detect = msm_hdmi_bridge_detect,
> > };
> >
> > +static void
> > +msm_hdmi_hotplug_work(struct work_struct *work)
> > +{
> > + struct hdmi_bridge *hdmi_bridge =
> > + container_of(work, struct hdmi_bridge, hpd_work);
> > + struct drm_bridge *bridge = &hdmi_bridge->base;
> > +
> > + drm_bridge_hpd_notify(bridge, drm_bridge_detect(bridge));
> > +}
> >
> > /* initialize bridge */
> > struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi)
> > @@ -275,11 +336,17 @@ struct drm_bridge *msm_hdmi_bridge_init(struct
> > hdmi *hdmi)
> > }
> >
> > hdmi_bridge->hdmi = hdmi;
> > + INIT_WORK(&hdmi_bridge->hpd_work, msm_hdmi_hotplug_work);
> >
> > bridge = &hdmi_bridge->base;
> > bridge->funcs = &msm_hdmi_bridge_funcs;
> > + bridge->ddc = hdmi->i2c;
> > + bridge->type = DRM_MODE_CONNECTOR_HDMIA;
> > + bridge->ops = DRM_BRIDGE_OP_HPD |
> > + DRM_BRIDGE_OP_DETECT |
> > + DRM_BRIDGE_OP_EDID;
> >
> > - ret = drm_bridge_attach(hdmi->encoder, bridge, NULL, 0);
> > + ret = drm_bridge_attach(hdmi->encoder, bridge, NULL,
> > DRM_BRIDGE_ATTACH_NO_CONNECTOR);
> > if (ret)
> > goto fail;
> >
> > diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
> > b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
> > similarity index 62%
> > rename from drivers/gpu/drm/msm/hdmi/hdmi_connector.c
> > rename to drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
> > index a7f729cdec7b..1cda7bf23b3b 100644
> > --- a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
> > +++ b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
> > @@ -11,13 +11,6 @@
> > #include "msm_kms.h"
> > #include "hdmi.h"
> >
> > -struct hdmi_connector {
> > - struct drm_connector base;
> > - struct hdmi *hdmi;
> > - struct work_struct hpd_work;
> > -};
> > -#define to_hdmi_connector(x) container_of(x, struct hdmi_connector,
> > base)
> > -
> > static void msm_hdmi_phy_reset(struct hdmi *hdmi)
> > {
> > unsigned int val;
> > @@ -139,10 +132,10 @@ static void enable_hpd_clocks(struct hdmi *hdmi,
> > bool enable)
> > }
> > }
> >
> > -int msm_hdmi_hpd_enable(struct drm_connector *connector)
> > +int msm_hdmi_hpd_enable(struct drm_bridge *bridge)
> > {
> > - struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector);
> > - struct hdmi *hdmi = hdmi_connector->hdmi;
> > + struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
> > + struct hdmi *hdmi = hdmi_bridge->hdmi;
> > const struct hdmi_platform_config *config = hdmi->config;
> > struct device *dev = &hdmi->pdev->dev;
> > uint32_t hpd_ctrl;
> > @@ -199,9 +192,9 @@ int msm_hdmi_hpd_enable(struct drm_connector
> > *connector)
> > return ret;
> > }
> >
> > -static void hdp_disable(struct hdmi_connector *hdmi_connector)
> > +void msm_hdmi_hpd_disable(struct hdmi_bridge *hdmi_bridge)
> > {
> > - struct hdmi *hdmi = hdmi_connector->hdmi;
> > + struct hdmi *hdmi = hdmi_bridge->hdmi;
> > const struct hdmi_platform_config *config = hdmi->config;
> > struct device *dev = &hdmi->pdev->dev;
> > int ret;
> > @@ -227,19 +220,10 @@ static void hdp_disable(struct hdmi_connector
> > *hdmi_connector)
> > dev_warn(dev, "failed to disable hpd regulator: %d\n", ret);
> > }
> >
> > -static void
> > -msm_hdmi_hotplug_work(struct work_struct *work)
> > -{
> > - struct hdmi_connector *hdmi_connector =
> > - container_of(work, struct hdmi_connector, hpd_work);
> > - struct drm_connector *connector = &hdmi_connector->base;
> > - drm_helper_hpd_irq_event(connector->dev);
> > -}
> > -
> > -void msm_hdmi_connector_irq(struct drm_connector *connector)
> > +void msm_hdmi_hpd_irq(struct drm_bridge *bridge)
> > {
> > - struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector);
> > - struct hdmi *hdmi = hdmi_connector->hdmi;
> > + struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
> > + struct hdmi *hdmi = hdmi_bridge->hdmi;
> > uint32_t hpd_int_status, hpd_int_ctrl;
> >
> > /* Process HPD: */
> > @@ -262,7 +246,7 @@ void msm_hdmi_connector_irq(struct drm_connector
> > *connector)
> > hpd_int_ctrl |= HDMI_HPD_INT_CTRL_INT_CONNECT;
> > hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL, hpd_int_ctrl);
> >
> > - queue_work(hdmi->workq, &hdmi_connector->hpd_work);
> > + queue_work(hdmi->workq, &hdmi_bridge->hpd_work);
> > }
> > }
> >
> > @@ -293,11 +277,11 @@ static enum drm_connector_status
> > detect_gpio(struct hdmi *hdmi)
> > connector_status_disconnected;
> > }
> >
> > -static enum drm_connector_status hdmi_connector_detect(
> > - struct drm_connector *connector, bool force)
> > +enum drm_connector_status msm_hdmi_bridge_detect(
> > + struct drm_bridge *bridge)
> > {
> > - struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector);
> > - struct hdmi *hdmi = hdmi_connector->hdmi;
> > + struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
> > + struct hdmi *hdmi = hdmi_bridge->hdmi;
> > const struct hdmi_platform_config *config = hdmi->config;
> > struct hdmi_gpio_data hpd_gpio = config->gpios[HPD_GPIO_INDEX];
> > enum drm_connector_status stat_gpio, stat_reg;
> > @@ -331,115 +315,3 @@ static enum drm_connector_status
> > hdmi_connector_detect(
> >
> > return stat_gpio;
> > }
> > -
> > -static void hdmi_connector_destroy(struct drm_connector *connector)
> > -{
> > - struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector);
> > -
> > - hdp_disable(hdmi_connector);
> > -
> > - drm_connector_cleanup(connector);
> > -
> > - kfree(hdmi_connector);
> > -}
> > -
> > -static int msm_hdmi_connector_get_modes(struct drm_connector
> > *connector)
> > -{
> > - struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector);
> > - struct hdmi *hdmi = hdmi_connector->hdmi;
> > - struct edid *edid;
> > - uint32_t hdmi_ctrl;
> > - int ret = 0;
> > -
> > - hdmi_ctrl = hdmi_read(hdmi, REG_HDMI_CTRL);
> > - hdmi_write(hdmi, REG_HDMI_CTRL, hdmi_ctrl | HDMI_CTRL_ENABLE);
> > -
> > - edid = drm_get_edid(connector, hdmi->i2c);
> > -
> > - hdmi_write(hdmi, REG_HDMI_CTRL, hdmi_ctrl);
> > -
> > - hdmi->hdmi_mode = drm_detect_hdmi_monitor(edid);
> > - drm_connector_update_edid_property(connector, edid);
> > -
> > - if (edid) {
> > - ret = drm_add_edid_modes(connector, edid);
> > - kfree(edid);
> > - }
> > -
> > - return ret;
> > -}
> > -
> > -static int msm_hdmi_connector_mode_valid(struct drm_connector
> > *connector,
> > - struct drm_display_mode *mode)
> > -{
> > - struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector);
> > - struct hdmi *hdmi = hdmi_connector->hdmi;
> > - const struct hdmi_platform_config *config = hdmi->config;
> > - struct msm_drm_private *priv = connector->dev->dev_private;
> > - struct msm_kms *kms = priv->kms;
> > - long actual, requested;
> > -
> > - requested = 1000 * mode->clock;
> > - actual = kms->funcs->round_pixclk(kms,
> > - requested, hdmi_connector->hdmi->encoder);
> > -
> > - /* for mdp5/apq8074, we manage our own pixel clk (as opposed to
> > - * mdp4/dtv stuff where pixel clk is assigned to mdp/encoder
> > - * instead):
> > - */
> > - if (config->pwr_clk_cnt > 0)
> > - actual = clk_round_rate(hdmi->pwr_clks[0], actual);
> > -
> > - DBG("requested=%ld, actual=%ld", requested, actual);
> > -
> > - if (actual != requested)
> > - return MODE_CLOCK_RANGE;
> > -
> > - return 0;
> > -}
> > -
> > -static const struct drm_connector_funcs hdmi_connector_funcs = {
> > - .detect = hdmi_connector_detect,
> > - .fill_modes = drm_helper_probe_single_connector_modes,
> > - .destroy = hdmi_connector_destroy,
> > - .reset = drm_atomic_helper_connector_reset,
> > - .atomic_duplicate_state =
> > drm_atomic_helper_connector_duplicate_state,
> > - .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
> > -};
> > -
> > -static const struct drm_connector_helper_funcs
> > msm_hdmi_connector_helper_funcs = {
> > - .get_modes = msm_hdmi_connector_get_modes,
> > - .mode_valid = msm_hdmi_connector_mode_valid,
> > -};
> > -
> > -/* initialize connector */
> > -struct drm_connector *msm_hdmi_connector_init(struct hdmi *hdmi)
> > -{
> > - struct drm_connector *connector = NULL;
> > - struct hdmi_connector *hdmi_connector;
> > -
> > - hdmi_connector = kzalloc(sizeof(*hdmi_connector), GFP_KERNEL);
> > - if (!hdmi_connector)
> > - return ERR_PTR(-ENOMEM);
> > -
> > - hdmi_connector->hdmi = hdmi;
> > - INIT_WORK(&hdmi_connector->hpd_work, msm_hdmi_hotplug_work);
> > -
> > - connector = &hdmi_connector->base;
> > -
> > - drm_connector_init_with_ddc(hdmi->dev, connector,
> > - &hdmi_connector_funcs,
> > - DRM_MODE_CONNECTOR_HDMIA,
> > - hdmi->i2c);
> > - drm_connector_helper_add(connector,
> > &msm_hdmi_connector_helper_funcs);
> > -
> > - connector->polled = DRM_CONNECTOR_POLL_CONNECT |
> > - DRM_CONNECTOR_POLL_DISCONNECT;
> > -
> > - connector->interlace_allowed = 0;
> > - connector->doublescan_allowed = 0;
> > -
> > - drm_connector_attach_encoder(connector, hdmi->encoder);
> > -
> > - return connector;
> > -}
--
With best wishes
Dmitry
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