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* [PATCH v2 1/2] OMAPDSS: HDMI: Move duplicate code from boardfile
@ 2011-12-19 12:36 mythripk
  2011-12-19 12:36 ` [PATCH v2 2/2] OMAPDSS: HDMI: Disable DDC internal pull up mythripk
  0 siblings, 1 reply; 3+ messages in thread
From: mythripk @ 2011-12-19 12:36 UTC (permalink / raw)
  To: tomi.valkeinen, linux-omap; +Cc: Mythri P K

From: Mythri P K <mythripk@ti.com>

Move duplicate HDMI mux_init code from omap4 and panda board file
to display file.

Signed-off-by: Mythri P K <mythripk@ti.com>
---
 arch/arm/mach-omap2/board-4430sdp.c    |   16 +---------------
 arch/arm/mach-omap2/board-omap4panda.c |   17 +----------------
 arch/arm/mach-omap2/display.c          |   23 +++++++++++++++++++++++
 include/video/omapdss.h                |    2 ++
 4 files changed, 27 insertions(+), 31 deletions(-)

diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index 73b1e99..c3bd640 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -595,20 +595,6 @@ static void __init omap_sfh7741prox_init(void)
 			__func__, OMAP4_SFH7741_ENABLE_GPIO, error);
 }
 
-static void sdp4430_hdmi_mux_init(void)
-{
-	/* 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 struct gpio sdp4430_hdmi_gpios[] = {
 	{ HDMI_GPIO_HPD,	GPIOF_OUT_INIT_HIGH,	"hdmi_gpio_hpd"   },
 	{ HDMI_GPIO_LS_OE,	GPIOF_OUT_INIT_HIGH,	"hdmi_gpio_ls_oe" },
@@ -838,9 +824,9 @@ static void omap_4430sdp_display_init(void)
 		pr_err("%s: Could not get display_sel GPIO\n", __func__);
 
 	sdp4430_lcd_init();
-	sdp4430_hdmi_mux_init();
 	sdp4430_picodlp_init();
 	omap_display_init(&sdp4430_dss_data);
+	omap_hdmi_init();
 }
 
 #ifdef CONFIG_OMAP_MUX
diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c
index a5b576b..d95df2e 100644
--- a/arch/arm/mach-omap2/board-omap4panda.c
+++ b/arch/arm/mach-omap2/board-omap4panda.c
@@ -478,21 +478,6 @@ int __init omap4_panda_dvi_init(void)
 	return r;
 }
 
-
-static void omap4_panda_hdmi_mux_init(void)
-{
-	/* 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 struct gpio panda_hdmi_gpios[] = {
 	{ HDMI_GPIO_HPD,	GPIOF_OUT_INIT_HIGH, "hdmi_gpio_hpd"   },
 	{ HDMI_GPIO_LS_OE,	GPIOF_OUT_INIT_HIGH, "hdmi_gpio_ls_oe" },
@@ -555,8 +540,8 @@ void omap4_panda_display_init(void)
 	if (r)
 		pr_err("error initializing panda DVI\n");
 
-	omap4_panda_hdmi_mux_init();
 	omap_display_init(&omap4_panda_dss_data);
+	omap_hdmi_init();
 }
 
 static void __init omap4_panda_init(void)
diff --git a/arch/arm/mach-omap2/display.c b/arch/arm/mach-omap2/display.c
index dce9905..8436088 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 +97,20 @@ 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())
diff --git a/include/video/omapdss.h b/include/video/omapdss.h
index 378c7ed..0cb0469 100644
--- a/include/video/omapdss.h
+++ b/include/video/omapdss.h
@@ -309,6 +309,8 @@ struct omap_dss_board_info {
 
 /* Init with the board info */
 extern int omap_display_init(struct omap_dss_board_info *board_data);
+/* HDMI mux init*/
+extern int omap_hdmi_init(void);
 
 struct omap_display_platform_data {
 	struct omap_dss_board_info *board_data;
-- 
1.7.5.4


^ permalink raw reply related	[flat|nested] 3+ messages in thread
* [PATCH v2 2/2] OMAPDSS: HDMI: Disable DDC internal pull up
  2011-12-19 12:36 [PATCH v2 1/2] OMAPDSS: HDMI: Move duplicate code from boardfile mythripk
@ 2011-12-19 12:36 ` mythripk
  2011-12-19 12:53   ` Tomi Valkeinen
  0 siblings, 1 reply; 3+ messages in thread
From: mythripk @ 2011-12-19 12:36 UTC (permalink / raw)
  To: tomi.valkeinen, linux-omap; +Cc: Mythri P K, Ricardo Salveti de Araujo

From: Mythri P K <mythripk@ti.com>

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 <ricardo.salveti@linaro.org>
Signed-off-by: Mythri P K <mythripk@ti.com>
---
 arch/arm/mach-omap2/board-4430sdp.c    |    9 ++++++++-
 arch/arm/mach-omap2/board-omap4panda.c |   10 +++++++++-
 arch/arm/mach-omap2/display.c          |   22 +++++++++++++++++++---
 include/video/omapdss.h                |    6 +++++-
 4 files changed, 41 insertions(+), 6 deletions(-)

diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index c3bd640..4af874a 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -826,7 +826,14 @@ static void omap_4430sdp_display_init(void)
 	sdp4430_lcd_init();
 	sdp4430_picodlp_init();
 	omap_display_init(&sdp4430_dss_data);
-	omap_hdmi_init();
+	/*
+	 * OMAP4460SDP/Blaze and OMAP4430 ES2.3 SDP/Blaze boards and
+	 * later have external pull up on the HDMI I2C lines
+	 */
+	if (cpu_is_omap446x() || omap_rev() > OMAP4430_REV_ES2_2)
+		omap_hdmi_init(OMAP_HDMI_SDA_SCL_EXTERNAL_PULLUP);
+	else
+		omap_hdmi_init(0);
 }
 
 #ifdef CONFIG_OMAP_MUX
diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c
index d95df2e..00103e3 100644
--- a/arch/arm/mach-omap2/board-omap4panda.c
+++ b/arch/arm/mach-omap2/board-omap4panda.c
@@ -541,7 +541,15 @@ void omap4_panda_display_init(void)
 		pr_err("error initializing panda DVI\n");
 
 	omap_display_init(&omap4_panda_dss_data);
-	omap_hdmi_init();
+
+	/*
+	 * OMAP4460SDP/Blaze and OMAP4430 ES2.3 SDP/Blaze boards and
+	 * later have external pull up on the HDMI I2C lines
+	 */
+	if (cpu_is_omap446x() || omap_rev() > OMAP4430_REV_ES2_2)
+		omap_hdmi_init(OMAP_HDMI_SDA_SCL_EXTERNAL_PULLUP);
+	else
+		omap_hdmi_init(0);
 }
 
 static void __init omap4_panda_init(void)
diff --git a/arch/arm/mach-omap2/display.c b/arch/arm/mach-omap2/display.c
index 8436088..041fc52 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(int 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(int flags)
 {
 	if (cpu_is_omap44xx())
-		omap4_hdmi_mux_pads();
+		omap4_hdmi_mux_pads(flags);
 
 	return 0;
 }
diff --git a/include/video/omapdss.h b/include/video/omapdss.h
index 0cb0469..799470f 100644
--- a/include/video/omapdss.h
+++ b/include/video/omapdss.h
@@ -200,6 +200,10 @@ enum omap_dss_clk_source {
 	OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DSI,	/* OMAP4: PLL2_CLK2 */
 };
 
+enum omap_hdmi_flags {
+	OMAP_HDMI_SDA_SCL_EXTERNAL_PULLUP = 1 << 0,
+};
+
 /* RFBI */
 
 struct rfbi_timings {
@@ -310,7 +314,7 @@ struct omap_dss_board_info {
 /* Init with the board info */
 extern int omap_display_init(struct omap_dss_board_info *board_data);
 /* HDMI mux init*/
-extern int  omap_hdmi_init(void);
+extern int omap_hdmi_init(int flags);
 
 struct omap_display_platform_data {
 	struct omap_dss_board_info *board_data;
-- 
1.7.5.4


^ permalink raw reply related	[flat|nested] 3+ messages in thread
* Re: [PATCH v2 2/2] OMAPDSS: HDMI: Disable DDC internal pull up
  2011-12-19 12:36 ` [PATCH v2 2/2] OMAPDSS: HDMI: Disable DDC internal pull up mythripk
@ 2011-12-19 12:53   ` Tomi Valkeinen
  0 siblings, 0 replies; 3+ messages in thread
From: Tomi Valkeinen @ 2011-12-19 12:53 UTC (permalink / raw)
  To: mythripk; +Cc: linux-omap, Ricardo Salveti de Araujo

[-- Attachment #1: Type: text/plain, Size: 826 bytes --]

On Mon, 2011-12-19 at 18:06 +0530, mythripk@ti.com wrote:

> diff --git a/include/video/omapdss.h b/include/video/omapdss.h
> index 0cb0469..799470f 100644
> --- a/include/video/omapdss.h
> +++ b/include/video/omapdss.h
> @@ -200,6 +200,10 @@ enum omap_dss_clk_source {
>  	OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DSI,	/* OMAP4: PLL2_CLK2 */
>  };
>  
> +enum omap_hdmi_flags {
> +	OMAP_HDMI_SDA_SCL_EXTERNAL_PULLUP = 1 << 0,
> +};
> +
>  /* RFBI */
>  
>  struct rfbi_timings {
> @@ -310,7 +314,7 @@ struct omap_dss_board_info {
>  /* Init with the board info */
>  extern int omap_display_init(struct omap_dss_board_info *board_data);
>  /* HDMI mux init*/
> -extern int  omap_hdmi_init(void);
> +extern int omap_hdmi_init(int flags);

You have an enum for flags, so use the enum instead of int.

 Tomi


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^ permalink raw reply	[flat|nested] 3+ messages in thread
end of thread, other threads:[~2011-12-19 12:54 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-12-19 12:36 [PATCH v2 1/2] OMAPDSS: HDMI: Move duplicate code from boardfile mythripk
2011-12-19 12:36 ` [PATCH v2 2/2] OMAPDSS: HDMI: Disable DDC internal pull up mythripk
2011-12-19 12:53   ` Tomi Valkeinen

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