From ee9dfd82ff1317ac5c0147fe21508ad6d7df4cff Mon Sep 17 00:00:00 2001 From: Mythri P K Date: Mon, 2 Jan 2012 14:02:37 +0530 Subject: OMAPDSS: HDMI: Move duplicate code from boardfile Move duplicate HDMI mux_init code from omap4 and panda board file to display file. Signed-off-by: Mythri P K Signed-off-by: Tomi Valkeinen --- arch/arm/mach-omap2/display.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'arch/arm/mach-omap2/display.c') diff --git a/arch/arm/mach-omap2/display.c b/arch/arm/mach-omap2/display.c index dce9905d64b..8436088ffe1 100644 --- a/arch/arm/mach-omap2/display.c +++ b/arch/arm/mach-omap2/display.c @@ -29,6 +29,7 @@ #include #include +#include "mux.h" #include "control.h" #include "display.h" @@ -96,6 +97,20 @@ static const struct omap_dss_hwmod_data omap4_dss_hwmod_data[] __initdata = { { "dss_hdmi", "omapdss_hdmi", -1 }, }; +static void omap4_hdmi_mux_pads() +{ + /* 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); +} + static int omap4_dsi_mux_pads(int dsi_id, unsigned lanes) { u32 enable_mask, enable_shift; @@ -129,6 +144,14 @@ static int omap4_dsi_mux_pads(int dsi_id, unsigned lanes) return 0; } +int omap_hdmi_init(void) +{ + if (cpu_is_omap44xx()) + omap4_hdmi_mux_pads(); + + return 0; +} + static int omap_dsi_enable_pads(int dsi_id, unsigned lane_mask) { if (cpu_is_omap44xx()) -- cgit v1.2.3 From 9a9016832d2601a290db4dce6dd55552bdae5b1a Mon Sep 17 00:00:00 2001 From: Mythri P K Date: Mon, 2 Jan 2012 14:02:38 +0530 Subject: OMAPDSS: HDMI: Disable DDC internal pull up Disables the internal pull resistor for SDA and SCL which are enabled by default, as there are external pull up's in 4460 and 4430 ES2.3 SDP, Blaze and Panda Boards, It is done to avoid the EDID read failure. Signed-off-by: Ricardo Salveti de Araujo Signed-off-by: Mythri P K Signed-off-by: Tomi Valkeinen --- arch/arm/mach-omap2/display.c | 22 +++++++++++++++++++--- 1 file changed, 19 insertions(+), 3 deletions(-) (limited to 'arch/arm/mach-omap2/display.c') 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; } -- cgit v1.2.3