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-rw-r--r--drivers/phy/phy-core-mipi-dphy.c31
1 files changed, 27 insertions, 4 deletions
diff --git a/drivers/phy/phy-core-mipi-dphy.c b/drivers/phy/phy-core-mipi-dphy.c
index 929e86d6558e..f4956a417a47 100644
--- a/drivers/phy/phy-core-mipi-dphy.c
+++ b/drivers/phy/phy-core-mipi-dphy.c
@@ -17,19 +17,21 @@
* from the valid ranges specified in Section 6.9, Table 14, Page 41
* of the D-PHY specification (v1.2).
*/
-int phy_mipi_dphy_get_default_config(unsigned long pixel_clock,
+static int phy_mipi_dphy_calc_config(unsigned long pixel_clock,
unsigned int bpp,
unsigned int lanes,
+ unsigned long long hs_clk_rate,
struct phy_configure_opts_mipi_dphy *cfg)
{
- unsigned long long hs_clk_rate;
unsigned long long ui;
if (!cfg)
return -EINVAL;
- hs_clk_rate = pixel_clock * bpp;
- do_div(hs_clk_rate, lanes);
+ if (!hs_clk_rate) {
+ hs_clk_rate = pixel_clock * bpp;
+ do_div(hs_clk_rate, lanes);
+ }
ui = ALIGN(PSEC_PER_SEC, hs_clk_rate);
do_div(ui, hs_clk_rate);
@@ -75,8 +77,29 @@ int phy_mipi_dphy_get_default_config(unsigned long pixel_clock,
return 0;
}
+
+int phy_mipi_dphy_get_default_config(unsigned long pixel_clock,
+ unsigned int bpp,
+ unsigned int lanes,
+ struct phy_configure_opts_mipi_dphy *cfg)
+{
+ return phy_mipi_dphy_calc_config(pixel_clock, bpp, lanes, 0, cfg);
+
+}
EXPORT_SYMBOL(phy_mipi_dphy_get_default_config);
+int phy_mipi_dphy_get_default_config_for_hsclk(unsigned long long hs_clk_rate,
+ unsigned int lanes,
+ struct phy_configure_opts_mipi_dphy *cfg)
+{
+ if (!hs_clk_rate)
+ return -EINVAL;
+
+ return phy_mipi_dphy_calc_config(0, 0, lanes, hs_clk_rate, cfg);
+
+}
+EXPORT_SYMBOL(phy_mipi_dphy_get_default_config_for_hsclk);
+
/*
* Validate D-PHY configuration according to MIPI D-PHY specification
* (v1.2, Section Section 6.9 "Global Operation Timing Parameters").