[PATCH v4 4/5] drm/msm/dsi: add DSI version >= comparison helper

[Alexander Koskovich <akoskovich@pm.me>]

Add a helper for checking if the DSI hardware version is greater
than or equal to a given version, for use in a future change.

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Alexander Koskovich <akoskovich@pm.me>
---
 drivers/gpu/drm/msm/dsi/dsi_host.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index db6da99375a1..b55ffe2fdec3 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -782,13 +782,21 @@ static void dsi_ctrl_disable(struct msm_dsi_host *msm_host)
 	dsi_write(msm_host, REG_DSI_CTRL, 0);
 }
 
+static bool msm_dsi_host_version_geq(struct msm_dsi_host *msm_host,
+				    u32 major, u32 minor)
+{
+	return msm_host->cfg_hnd->major > major ||
+	       (msm_host->cfg_hnd->major == major &&
+	       msm_host->cfg_hnd->minor >= minor);
+}
+
 bool msm_dsi_host_is_wide_bus_enabled(struct mipi_dsi_host *host)
 {
 	struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
 
 	return msm_host->dsc &&
-		(msm_host->cfg_hnd->major == MSM_DSI_VER_MAJOR_6G &&
-		 msm_host->cfg_hnd->minor >= MSM_DSI_6G_VER_MINOR_V2_5_0);
+		msm_dsi_host_version_geq(msm_host, MSM_DSI_VER_MAJOR_6G,
+					MSM_DSI_6G_VER_MINOR_V2_5_0);
 }
 
 static void dsi_ctrl_enable(struct msm_dsi_host *msm_host,

-- 
2.53.0