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Diffstat (limited to 'arch/arm/mach-omap2/display.c')
-rw-r--r--arch/arm/mach-omap2/display.c22
1 files changed, 19 insertions, 3 deletions
diff --git a/arch/arm/mach-omap2/display.c b/arch/arm/mach-omap2/display.c
index 8436088ffe1..ffd9bd98302 100644
--- a/arch/arm/mach-omap2/display.c
+++ b/arch/arm/mach-omap2/display.c
@@ -97,8 +97,11 @@ static const struct omap_dss_hwmod_data omap4_dss_hwmod_data[] __initdata = {
{ "dss_hdmi", "omapdss_hdmi", -1 },
};
-static void omap4_hdmi_mux_pads()
+static void omap4_hdmi_mux_pads(enum omap_hdmi_flags flags)
{
+ u32 reg;
+ u16 control_i2c_1;
+
/* PAD0_HDMI_HPD_PAD1_HDMI_CEC */
omap_mux_init_signal("hdmi_hpd",
OMAP_PIN_INPUT_PULLUP);
@@ -109,6 +112,19 @@ static void omap4_hdmi_mux_pads()
OMAP_PIN_INPUT_PULLUP);
omap_mux_init_signal("hdmi_ddc_sda",
OMAP_PIN_INPUT_PULLUP);
+
+ /*
+ * CONTROL_I2C_1: HDMI_DDC_SDA_PULLUPRESX (bit 28) and
+ * HDMI_DDC_SCL_PULLUPRESX (bit 24) are set to disable
+ * internal pull up resistor.
+ */
+ if (flags & OMAP_HDMI_SDA_SCL_EXTERNAL_PULLUP) {
+ control_i2c_1 = OMAP4_CTRL_MODULE_PAD_CORE_CONTROL_I2C_1;
+ reg = omap4_ctrl_pad_readl(control_i2c_1);
+ reg |= (OMAP4_HDMI_DDC_SDA_PULLUPRESX_MASK |
+ OMAP4_HDMI_DDC_SCL_PULLUPRESX_MASK);
+ omap4_ctrl_pad_writel(reg, control_i2c_1);
+ }
}
static int omap4_dsi_mux_pads(int dsi_id, unsigned lanes)
@@ -144,10 +160,10 @@ static int omap4_dsi_mux_pads(int dsi_id, unsigned lanes)
return 0;
}
-int omap_hdmi_init(void)
+int omap_hdmi_init(enum omap_hdmi_flags flags)
{
if (cpu_is_omap44xx())
- omap4_hdmi_mux_pads();
+ omap4_hdmi_mux_pads(flags);
return 0;
}