linux-kernel - [PATCH] drm/msm/dsi: Replace dsi_get_bpp() with mipi

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240204-drm-msm-dsi-remove-open-coded-get-bpp-v1-1-c16212de7e86@somainline.org>
Date: Sun, 04 Feb 2024 18:04:39 +0100
From: Marijn Suijten <marijn.suijten@...ainline.org>
To: Rob Clark <robdclark@...il.com>, 
 Abhinav Kumar <quic_abhinavk@...cinc.com>, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, Sean Paul <sean@...rly.run>, 
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
 freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Marijn Suijten <marijn.suijten@...ainline.org>
Subject: [PATCH] drm/msm/dsi: Replace dsi_get_bpp() with mipi_dsi header
 function

drm_mipi_dsi.h already provides a conversion function from MIPI_DSI_FMT_
to bpp, named mipi_dsi_pixel_format_to_bpp().

Signed-off-by: Marijn Suijten <marijn.suijten@...ainline.org>
---
 drivers/gpu/drm/msm/dsi/dsi_host.c | 18 ++++--------------
 1 file changed, 4 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index deeecdfd6c4e..9fa0053fac74 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -183,16 +183,6 @@ struct msm_dsi_host {
 	int irq;
 };
 
-static u32 dsi_get_bpp(const enum mipi_dsi_pixel_format fmt)
-{
-	switch (fmt) {
-	case MIPI_DSI_FMT_RGB565:		return 16;
-	case MIPI_DSI_FMT_RGB666_PACKED:	return 18;
-	case MIPI_DSI_FMT_RGB666:
-	case MIPI_DSI_FMT_RGB888:
-	default:				return 24;
-	}
-}
 
 static inline u32 dsi_read(struct msm_dsi_host *msm_host, u32 reg)
 {
@@ -567,7 +557,7 @@ unsigned long dsi_byte_clk_get_rate(struct mipi_dsi_host *host, bool is_bonded_d
 {
 	struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
 	u8 lanes = msm_host->lanes;
-	u32 bpp = dsi_get_bpp(msm_host->format);
+	u32 bpp = mipi_dsi_pixel_format_to_bpp(msm_host->format);
 	unsigned long pclk_rate = dsi_get_pclk_rate(mode, msm_host->dsc, is_bonded_dsi);
 	unsigned long pclk_bpp;
 
@@ -610,7 +600,7 @@ 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, bool is_bonded_dsi)
 {
-	u32 bpp = dsi_get_bpp(msm_host->format);
+	u32 bpp = mipi_dsi_pixel_format_to_bpp(msm_host->format);
 	unsigned int esc_mhz, esc_div;
 	unsigned long byte_mhz;
 
@@ -993,7 +983,7 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_bonded_dsi)
 
 		/* image data and 1 byte write_memory_start cmd */
 		if (!msm_host->dsc)
-			wc = hdisplay * dsi_get_bpp(msm_host->format) / 8 + 1;
+			wc = hdisplay * mipi_dsi_pixel_format_to_bpp(msm_host->format) / 8 + 1;
 		else
 			/*
 			 * When DSC is enabled, WC = slice_chunk_size * slice_per_pkt + 1.
@@ -1413,7 +1403,7 @@ static int dsi_cmds2buf_tx(struct msm_dsi_host *msm_host,
 {
 	int len, ret;
 	int bllp_len = msm_host->mode->hdisplay *
-			dsi_get_bpp(msm_host->format) / 8;
+			mipi_dsi_pixel_format_to_bpp(msm_host->format) / 8;
 
 	len = dsi_cmd_dma_add(msm_host, msg);
 	if (len < 0) {

---
base-commit: 01af33cc9894b4489fb68fa35c40e9fe85df63dc
change-id: 20231019-drm-msm-dsi-remove-open-coded-get-bpp-e7864b0b11dd

Best regards,
-- 
Marijn Suijten <marijn.suijten@...ainline.org>