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Subject[PATCH v3 4/4] drm/msm/mdp5: Make the intf connection in config module
Date
Up until now, we assume that eDP is tight to intf_0 and HDMI to
intf_3. This information shall actually come from the mdp5_cfg
module since it can change from one chip to another.

v2: rename macro to mdp5_cfg_intf_is_virtual() [pointed by Archit]
v3: add sanity check before writing in INTF_TIMING_ENGINE_EN registers

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
---
drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c | 8 +++
drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h | 4 ++
drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c | 112 ++++++++++++++++++--------------
3 files changed, 75 insertions(+), 49 deletions(-)

diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c
index 72c075a..8bee023 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c
@@ -62,6 +62,10 @@ const struct mdp5_cfg_hw msm8x74_config = {
.count = 4,
.base = { 0x12500, 0x12700, 0x12900, 0x12b00 },
},
+ .intfs = {
+ [0] = INTF_eDP,
+ [3] = INTF_HDMI,
+ },
.max_clk = 200000000,
};

@@ -111,6 +115,10 @@ const struct mdp5_cfg_hw apq8084_config = {
.count = 5,
.base = { 0x12500, 0x12700, 0x12900, 0x12b00, 0x12d00 },
},
+ .intfs = {
+ [0] = INTF_eDP,
+ [3] = INTF_HDMI,
+ },
.max_clk = 320000000,
};

diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h
index 69e35ac..12224d7 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h
@@ -56,6 +56,8 @@ struct mdp5_smp_block {
int reserved[MAX_CLIENTS]; /* # of MMBs allocated per client */
};

+#define MDP5_INTF_NUM_MAX 5
+
struct mdp5_cfg_hw {
char *name;

@@ -69,6 +71,8 @@ struct mdp5_cfg_hw {
struct mdp5_sub_block ad;
struct mdp5_sub_block intf;

+ u32 intfs[MDP5_INTF_NUM_MAX]; /* array of enum mdp5_intf_type */
+
uint32_t max_clk;
};

diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
index 390d9d2..7e03af5 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
@@ -161,6 +161,44 @@ int mdp5_enable(struct mdp5_kms *mdp5_kms)
return 0;
}

+static int construct_encoder(struct mdp5_kms *mdp5_kms,
+ enum mdp5_intf_type intf_type, int intf_num)
+{
+ struct drm_device *dev = mdp5_kms->dev;
+ struct msm_drm_private *priv = dev->dev_private;
+ struct drm_encoder *encoder;
+ struct mdp5_interface intf = {
+ .num = intf_num,
+ .type = intf_type,
+ .mode = MDP5_INTF_MODE_NONE,
+ };
+ int ret = 0;
+
+ encoder = mdp5_encoder_init(dev, &intf);
+ if (IS_ERR(encoder)) {
+ ret = PTR_ERR(encoder);
+ dev_err(dev->dev, "failed to construct encoder: %d\n", ret);
+ return ret;
+ }
+
+ encoder->possible_crtcs = (1 << priv->num_crtcs) - 1;
+ priv->encoders[priv->num_encoders++] = encoder;
+
+ if (intf_type == INTF_HDMI) {
+ ret = hdmi_modeset_init(priv->hdmi, dev, encoder);
+ if (ret)
+ dev_err(dev->dev, "failed to init HDMI: %d\n", ret);
+
+ } else if (intf_type == INTF_eDP) {
+ /* Construct bridge/connector for eDP: */
+ ret = msm_edp_modeset_init(priv->edp, dev, encoder);
+ if (ret)
+ dev_err(dev->dev, "failed to init eDP: %d\n", ret);
+ }
+
+ return ret;
+}
+
static int modeset_init(struct mdp5_kms *mdp5_kms)
{
static const enum mdp5_pipe crtcs[] = {
@@ -171,7 +209,6 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
};
struct drm_device *dev = mdp5_kms->dev;
struct msm_drm_private *priv = dev->dev_private;
- struct drm_encoder *encoder;
const struct mdp5_cfg_hw *hw_cfg;
int i, ret;

@@ -222,56 +259,29 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
}
}

- if (priv->hdmi) {
- struct mdp5_interface intf = {
- .num = 3,
- .type = INTF_HDMI,
- .mode = MDP5_INTF_MODE_NONE,
- };
-
- /* Construct encoder for HDMI: */
- encoder = mdp5_encoder_init(dev, &intf);
- if (IS_ERR(encoder)) {
- dev_err(dev->dev, "failed to construct encoder\n");
- ret = PTR_ERR(encoder);
- goto fail;
- }
-
- encoder->possible_crtcs = (1 << priv->num_crtcs) - 1;;
- priv->encoders[priv->num_encoders++] = encoder;
-
- ret = hdmi_modeset_init(priv->hdmi, dev, encoder);
- if (ret) {
- dev_err(dev->dev, "failed to initialize HDMI: %d\n", ret);
- goto fail;
- }
- }
-
- if (priv->edp) {
- struct mdp5_interface intf = {
- .num = 0,
- .type = INTF_eDP,
- .mode = MDP5_INTF_MODE_NONE,
- };
-
- /* Construct encoder for eDP: */
- encoder = mdp5_encoder_init(dev, &intf);
- if (IS_ERR(encoder)) {
- dev_err(dev->dev, "failed to construct eDP encoder\n");
- ret = PTR_ERR(encoder);
- goto fail;
+ /* Construct external display interfaces' encoders: */
+ for (i = 0; i < ARRAY_SIZE(hw_cfg->intfs); i++) {
+ enum mdp5_intf_type intf_type = hw_cfg->intfs[i];
+
+ switch (intf_type) {
+ case INTF_DISABLED:
+ break;
+ case INTF_eDP:
+ if (priv->edp)
+ ret = construct_encoder(mdp5_kms, INTF_eDP, i);
+ break;
+ case INTF_HDMI:
+ if (priv->hdmi)
+ ret = construct_encoder(mdp5_kms, INTF_HDMI, i);
+ break;
+ default:
+ dev_err(dev->dev, "unknown intf: %d\n", intf_type);
+ ret = -EINVAL;
+ break;
}

- encoder->possible_crtcs = (1 << priv->num_crtcs) - 1;
- priv->encoders[priv->num_encoders++] = encoder;
-
- /* Construct bridge/connector for eDP: */
- ret = msm_edp_modeset_init(priv->edp, dev, encoder);
- if (ret) {
- dev_err(dev->dev, "failed to initialize eDP: %d\n",
- ret);
+ if (ret)
goto fail;
- }
}

return 0;
@@ -415,8 +425,12 @@ struct msm_kms *mdp5_kms_init(struct drm_device *dev)
* we don't disable):
*/
mdp5_enable(mdp5_kms);
- for (i = 0; i < config->hw->intf.count; i++)
+ for (i = 0; i < MDP5_INTF_NUM_MAX; i++) {
+ if (!config->hw->intf.base[i] ||
+ mdp5_cfg_intf_is_virtual(config->hw->intfs[i]))
+ continue;
mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(i), 0);
+ }
mdp5_disable(mdp5_kms);
mdelay(16);

--
Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project



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