drm/msm/mdp5: get the core clock rate from MDP5 config

The core clock rate depends on the hw configuration. Once we have
read the hardware revision, we can set the core clock to its
maximum value.
Before then, the clock is set at a rate supported by all MDP5
revisions.

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>

diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
index 6c414db6ff029c2b4b1c124d96bb6abe5667a552..1cb91bef2bc1bf37c1c447f42b07d52c5dc2bde1 100644 (file)
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
@@ -62,6 +62,7 @@ static const struct mdp5_config msm8x74_config = {
                .count = 4,
                .base = { 0x12500, 0x12700, 0x12900, 0x12b00 },
        },
+       .max_clk = 200000000,
 };
 
 static const struct mdp5_config apq8084_config = {
@@ -99,6 +100,7 @@ static const struct mdp5_config apq8084_config = {
                .count = 5,
                .base = { 0x12500, 0x12700, 0x12900, 0x12b00, 0x12d00 },
        },
+       .max_clk = 320000000,
 };
 
 struct mdp5_config_entry {
@@ -427,12 +429,13 @@ struct msm_kms *mdp5_kms_init(struct drm_device *dev)
        if (ret)
                goto fail;
 
-       ret = clk_set_rate(mdp5_kms->src_clk, config->max_clk);
-
        ret = mdp5_select_hw_cfg(kms);
        if (ret)
                goto fail;
 
+       /* TODO: compute core clock rate at runtime */
+       clk_set_rate(mdp5_kms->src_clk, mdp5_kms->hw_cfg->max_clk);
+
        /* make sure things are off before attaching iommu (bootloader could
         * have left things on, in which case we'll start getting faults if
         * we don't disable):
@@ -493,8 +496,6 @@ static struct mdp5_platform_config *mdp5_get_config(struct platform_device *dev)
        /* TODO */
 #endif
        config.iommu = iommu_domain_alloc(&platform_bus_type);
-       /* TODO hard-coded in downstream mdss, but should it be? */
-       config.max_clk = 200000000;
        /* TODO get from DT: */
        config.smp_blk_cnt = 22;
 

diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h
index 0e9e3f7f4e9d416052e86eda15c75114c5492fd4..70aa8d4dbba09f7b608aed671c4dd3c0efda5aa2 100644 (file)
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h
@@ -37,6 +37,8 @@ struct mdp5_config {
        struct mdp5_sub_block dspp;
        struct mdp5_sub_block ad;
        struct mdp5_sub_block intf;
+
+       uint32_t max_clk;
 };
 extern const struct mdp5_config *mdp5_cfg;
 #include "mdp5.xml.h"
@@ -83,7 +85,6 @@ struct mdp5_kms {
 /* platform config data (ie. from DT, or pdata) */
 struct mdp5_platform_config {
        struct iommu_domain *iommu;
-       uint32_t max_clk;
        int smp_blk_cnt;
 };