[PATCH] drm/msm/dsi: simplify pixel clk rate handling

[Dmitry Baryshkov]

Move a call to dsi_calc_pclk() out of calc_clk_rate directly towards
msm_dsi_host_get_phy_clk_req(). It is called for both 6g and v2 hosts.

Also, while we are at it, replace another dsi_get_pclk_rate() invocation
with using the stored value at msm_host->pixel_clk_rate.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
---
 drivers/gpu/drm/msm/dsi/dsi.h      |  4 ++--
 drivers/gpu/drm/msm/dsi/dsi_cfg.h  |  2 +-
 drivers/gpu/drm/msm/dsi/dsi_host.c | 24 ++++++++++++------------
 3 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h
index bd3763a5d723..93ec54478eb6 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.h
+++ b/drivers/gpu/drm/msm/dsi/dsi.h
@@ -129,8 +129,8 @@ int dsi_dma_base_get_6g(struct msm_dsi_host *msm_host, uint64_t *iova);
 int dsi_dma_base_get_v2(struct msm_dsi_host *msm_host, uint64_t *iova);
 int dsi_clk_init_v2(struct msm_dsi_host *msm_host);
 int dsi_clk_init_6g_v2(struct msm_dsi_host *msm_host);
-int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_bonded_dsi);
-int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_bonded_dsi);
+int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host);
+int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host);
 void msm_dsi_host_snapshot(struct msm_disp_state *disp_state, struct mipi_dsi_host *host);
 void msm_dsi_host_test_pattern_en(struct mipi_dsi_host *host);
 struct drm_dsc_config *msm_dsi_host_get_dsc_config(struct mipi_dsi_host *host);
diff --git a/drivers/gpu/drm/msm/dsi/dsi_cfg.h b/drivers/gpu/drm/msm/dsi/dsi_cfg.h
index 44be4a88aa83..5106e66846c3 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_cfg.h
+++ b/drivers/gpu/drm/msm/dsi/dsi_cfg.h
@@ -51,7 +51,7 @@ struct msm_dsi_host_cfg_ops {
 	void* (*tx_buf_get)(struct msm_dsi_host *msm_host);
 	void (*tx_buf_put)(struct msm_dsi_host *msm_host);
 	int (*dma_base_get)(struct msm_dsi_host *msm_host, uint64_t *iova);
-	int (*calc_clk_rate)(struct msm_dsi_host *msm_host, bool is_bonded_dsi);
+	int (*calc_clk_rate)(struct msm_dsi_host *msm_host);
 };
 
 struct msm_dsi_cfg_handler {
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 18fa30e1e858..7d99a108bff6 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -616,28 +616,21 @@ static void dsi_calc_pclk(struct msm_dsi_host *msm_host, bool is_bonded_dsi)
 
 }
 
-int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_bonded_dsi)
+int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host)
 {
-	if (!msm_host->mode) {
-		pr_err("%s: mode not set\n", __func__);
-		return -EINVAL;
-	}
-
-	dsi_calc_pclk(msm_host, is_bonded_dsi);
 	msm_host->esc_clk_rate = clk_get_rate(msm_host->esc_clk);
+
 	return 0;
 }
 
-int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_bonded_dsi)
+int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host)
 {
 	u32 bpp = dsi_get_bpp(msm_host->format);
 	u64 pclk_bpp;
 	unsigned int esc_mhz, esc_div;
 	unsigned long byte_mhz;
 
-	dsi_calc_pclk(msm_host, is_bonded_dsi);
-
-	pclk_bpp = (u64)dsi_get_pclk_rate(msm_host->mode, is_bonded_dsi) * bpp;
+	pclk_bpp = msm_host->pixel_clk_rate * bpp;
 	do_div(pclk_bpp, 8);
 	msm_host->src_clk_rate = pclk_bpp;
 
@@ -2292,7 +2285,14 @@ void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host,
 	const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
 	int ret;
 
-	ret = cfg_hnd->ops->calc_clk_rate(msm_host, is_bonded_dsi);
+	if (!msm_host->mode) {
+		pr_err("%s: mode not set\n", __func__);
+		return;
+	}
+
+	dsi_calc_pclk(msm_host, is_bonded_dsi);
+
+	ret = cfg_hnd->ops->calc_clk_rate(msm_host);
 	if (ret) {
 		pr_err("%s: unable to calc clk rate, %d\n", __func__, ret);
 		return;
-- 
2.39.0