hdmirx: add option for scdc enable [1/1]

PD#SWPL-13667

Problem:
some devices may forcely send signal above 3.4G
even if TV announce hdmi1.4 edid, such as apple
TV box, Samsung UBD-K8500 dvd; and for QD6508 box
of TCL, it will not send signal out if scdc NAK

Solution:
add a scdc force enable option to cover this
issue. by default, scdc is enabled or not
accroding to current edid version

Verify:
X301

Change-Id: Ibdacbd3bb1edbdcb99637252530d19510fbcfb1d
Signed-off-by: Hang Cheng <hang.cheng@amlogic.com>

arch/arm/boot/dts/amlogic/tl1_t962x2_x301_1g.dts

@@ -911,6 +911,8 @@
 		hpd_low_cec_off = <1>;
 		/* bit4: enable feature, bit3~0: port number */
 		disable_port = <0x0>;
+		/* 1: enable, 0: disable */
+		scdc_force_en = <0>;
 		/* MAP_ADDR_MODULE_CBUS */
 		/* MAP_ADDR_MODULE_HIU */
 		/* MAP_ADDR_MODULE_HDMIRX_CAPB3 */

arch/arm/boot/dts/amlogic/tl1_t962x2_x301_1g_drm.dts

@@ -905,6 +905,8 @@
 		hpd_low_cec_off = <1>;
 		/* bit4: enable feature, bit3~0: port number */
 		disable_port = <0x0>;
+		/* 1: enable, 0: disable */
+		scdc_force_en = <0>;
 		/* MAP_ADDR_MODULE_CBUS */
 		/* MAP_ADDR_MODULE_HIU */
 		/* MAP_ADDR_MODULE_HDMIRX_CAPB3 */

arch/arm64/boot/dts/amlogic/tl1_t962x2_x301_1g.dts

@@ -908,6 +908,8 @@
 		hpd_low_cec_off = <1>;
 		/* bit4: enable feature, bit3~0: port number */
 		disable_port = <0x0>;
+		/* 1: enable, 0: disable */
+		scdc_force_en = <0>;
 		/* MAP_ADDR_MODULE_CBUS */
 		/* MAP_ADDR_MODULE_HIU */
 		/* MAP_ADDR_MODULE_HDMIRX_CAPB3 */

arch/arm64/boot/dts/amlogic/tl1_t962x2_x301_1g_drm.dts

@@ -901,6 +901,8 @@
 		hpd_low_cec_off = <1>;
 		/* bit4: enable feature, bit3~0: port number */
 		disable_port = <0x0>;
+		/* 1: enable, 0: disable */
+		scdc_force_en = <0>;
 		/* MAP_ADDR_MODULE_CBUS */
 		/* MAP_ADDR_MODULE_HIU */
 		/* MAP_ADDR_MODULE_HDMIRX_CAPB3 */

drivers/amlogic/media/vin/tvin/hdmirx/hdmi_rx_drv.c

@@ -2439,6 +2439,15 @@ static int hdmirx_probe(struct platform_device *pdev)
 		rx.arc_port = 0x1;
 		rx_pr("not find arc_port, portB by default\n");
 	}
+	ret = of_property_read_u32(pdev->dev.of_node,
+				   "scdc_force_en",
+				   &scdc_force_en);
+	if (ret) {
+		/* enable scdc accroding to edid version */
+		scdc_force_en = 0;
+		rx_pr("not find scdc_force_en, disable by default\n");
+	}
+
 	ret = of_reserved_mem_device_init(&(pdev->dev));
 	if (ret != 0)
 		rx_pr("warning: no rev cmd mem\n");

drivers/amlogic/media/vin/tvin/hdmirx/hdmi_rx_drv.h

@@ -47,7 +47,7 @@
  *
  *
  */
-#define RX_VER2 "ver.2019/08/22"
+#define RX_VER2 "ver.2019/09/05"
 
 /*print type*/
 #define	LOG_EN		0x01

drivers/amlogic/media/vin/tvin/hdmirx/hdmi_rx_hw.c

@@ -101,6 +101,8 @@ int pll_rst_max = 5;
 /* cdr lock threshold */
 int cdr_lock_level;
 int clock_lock_th = 2;
+int scdc_force_en;
+
 /*------------------------variable define end------------------------------*/
 
 static int check_regmap_flag(unsigned int addr)
@@ -1942,7 +1944,8 @@ void clk_init(void)
 void hdmirx_20_init(void)
 {
 	unsigned long data32;
-	unsigned long scdc_en = rx.edid_ver;
+	unsigned long scdc_en =
+		scdc_force_en ? 1 : rx.edid_ver;
 
 	data32 = 0;
 	data32 |= 1	<< 12; /* [12]     vid_data_checken */

drivers/amlogic/media/vin/tvin/hdmirx/hdmi_rx_hw.h

@@ -1117,6 +1117,7 @@ extern int cdr_lock_level;
 extern int top_intr_maskn_value;
 extern int hbr_force_8ch;
 extern int clock_lock_th;
+extern int scdc_force_en;
 extern void rx_get_best_eq_setting(void);
 extern void wr_reg_hhi(unsigned int offset, unsigned int val);
 extern void wr_reg_hhi_bits(unsigned int offset, unsigned int mask,

drivers/amlogic/media/vin/tvin/hdmirx/hdmi_rx_wrapper.c

@@ -1732,6 +1732,8 @@ int rx_set_global_variable(const char *buf, int size)
 		return pr_var(en_take_dtd_space, index);
 	if (set_pr_var(tmpbuf, earc_cap_ds_update_hpd_en, value, &index, ret))
 		return pr_var(earc_cap_ds_update_hpd_en, index);
+	if (set_pr_var(tmpbuf, scdc_force_en, value, &index, ret))
+		return pr_var(scdc_force_en, index);
 	return 0;
 }
 
@@ -1844,6 +1846,7 @@ void rx_get_global_variable(const char *buf)
 	pr_var(clock_lock_th, i++);
 	pr_var(en_take_dtd_space, i++);
 	pr_var(earc_cap_ds_update_hpd_en, i++);
+	pr_var(scdc_force_en, i++);
 }
 
 void skip_frame(unsigned int cnt)