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Diffstat (limited to 'arch/arm/mach-omap2/display.c')
-rw-r--r--arch/arm/mach-omap2/display.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/display.c b/arch/arm/mach-omap2/display.c
index dce9905d64bb..ffd9bd983023 100644
--- a/arch/arm/mach-omap2/display.c
+++ b/arch/arm/mach-omap2/display.c
@@ -29,6 +29,7 @@
#include <plat/omap-pm.h>
#include <plat/common.h>
+#include "mux.h"
#include "control.h"
#include "display.h"
@@ -96,6 +97,36 @@ static const struct omap_dss_hwmod_data omap4_dss_hwmod_data[] __initdata = {
{ "dss_hdmi", "omapdss_hdmi", -1 },
};
+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);
+ omap_mux_init_signal("hdmi_cec",
+ OMAP_PIN_INPUT_PULLUP);
+ /* PAD0_HDMI_DDC_SCL_PAD1_HDMI_DDC_SDA */
+ omap_mux_init_signal("hdmi_ddc_scl",
+ 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)
{
u32 enable_mask, enable_shift;
@@ -129,6 +160,14 @@ static int omap4_dsi_mux_pads(int dsi_id, unsigned lanes)
return 0;
}
+int omap_hdmi_init(enum omap_hdmi_flags flags)
+{
+ if (cpu_is_omap44xx())
+ omap4_hdmi_mux_pads(flags);
+
+ return 0;
+}
+
static int omap_dsi_enable_pads(int dsi_id, unsigned lane_mask)
{
if (cpu_is_omap44xx())
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