atv_demod: modify atv demod code [1/1]

PD#SWPL-2295 Problem: 1.modify atv demod code for coverity. 2.add ntsc-m ring filter for t962x2. 3.merge code optimization from android l. 4.add tuner compatible info in dts for tuner debug. Solution: 1.modify atv demod code for coverity. 2.add ntsc-m ring filter for t962x2. 3.merge code optimization from android l. 4.add tuner compatible info in dts for tuner debug. Verify: verified by einstein Change-Id: I9696aa628315ee11f0c9dd279c7cc03797f04331 Signed-off-by: nengwen.chen <nengwen.chen@amlogic.com>
2026-06-08 20:07:46 +09:00 · 2018-12-05 13:37:41 +08:00
parent ed47de1158
commit f54861b2ff
33 changed files with 206 additions and 91 deletions
--- a/arch/arm/boot/dts/amlogic/tl1_t962x2_skt.dts
+++ b/arch/arm/boot/dts/amlogic/tl1_t962x2_skt.dts
@@ -873,6 +873,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "mxl661_tuner";
 		tuner_i2c_adap = <&i2c0>;
--- a/arch/arm/boot/dts/amlogic/tl1_t962x2_x301.dts
+++ b/arch/arm/boot/dts/amlogic/tl1_t962x2_x301.dts
@@ -877,6 +877,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "mxl661_tuner";
 		tuner_i2c_adap = <&i2c0>;
--- a/arch/arm/boot/dts/amlogic/txl_t950_p341.dts
+++ b/arch/arm/boot/dts/amlogic/txl_t950_p341.dts
@@ -436,6 +436,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "r842_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm/boot/dts/amlogic/txl_t960_p346.dts
+++ b/arch/arm/boot/dts/amlogic/txl_t960_p346.dts
@@ -437,6 +437,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "r842_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm/boot/dts/amlogic/txl_t962_p320.dts
+++ b/arch/arm/boot/dts/amlogic/txl_t962_p320.dts
@@ -427,6 +427,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "si2151_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm/boot/dts/amlogic/txl_t962_p321.dts
+++ b/arch/arm/boot/dts/amlogic/txl_t962_p321.dts
@@ -432,6 +432,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "r842_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm/boot/dts/amlogic/txl_t962_p321_720p.dts
+++ b/arch/arm/boot/dts/amlogic/txl_t962_p321_720p.dts
@@ -432,6 +432,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "r842_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm/boot/dts/amlogic/txlx_t962e_r321.dts
+++ b/arch/arm/boot/dts/amlogic/txlx_t962e_r321.dts
@@ -626,6 +626,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "si2151_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm/boot/dts/amlogic/txlx_t962e_r321_buildroot.dts
+++ b/arch/arm/boot/dts/amlogic/txlx_t962e_r321_buildroot.dts
@@ -670,6 +670,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "si2151_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm/boot/dts/amlogic/txlx_t962x_r311_2g.dts
+++ b/arch/arm/boot/dts/amlogic/txlx_t962x_r311_2g.dts
@@ -629,6 +629,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "mxl661_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm/boot/dts/amlogic/txlx_t962x_r311_720p.dts
+++ b/arch/arm/boot/dts/amlogic/txlx_t962x_r311_720p.dts
@@ -625,6 +625,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "mxl661_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm/boot/dts/amlogic/txlx_t962x_r314.dts
+++ b/arch/arm/boot/dts/amlogic/txlx_t962x_r314.dts
@@ -632,6 +632,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "mxl661_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm64/boot/dts/amlogic/txl_t950_p341.dts
+++ b/arch/arm64/boot/dts/amlogic/txl_t950_p341.dts
@@ -436,6 +436,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "r842_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm64/boot/dts/amlogic/txl_t960_p346.dts
+++ b/arch/arm64/boot/dts/amlogic/txl_t960_p346.dts
@@ -436,6 +436,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "r842_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm64/boot/dts/amlogic/txl_t962_p320.dts
+++ b/arch/arm64/boot/dts/amlogic/txl_t962_p320.dts
@@ -427,6 +427,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "si2151_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm64/boot/dts/amlogic/txl_t962_p321.dts
+++ b/arch/arm64/boot/dts/amlogic/txl_t962_p321.dts
@@ -424,6 +424,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "r842_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm64/boot/dts/amlogic/txl_t962_p321_720p.dts
+++ b/arch/arm64/boot/dts/amlogic/txl_t962_p321_720p.dts
@@ -424,6 +424,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "r842_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm64/boot/dts/amlogic/txlx_t962e_r321.dts
+++ b/arch/arm64/boot/dts/amlogic/txlx_t962e_r321.dts
@@ -625,6 +625,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "si2151_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm64/boot/dts/amlogic/txlx_t962e_r321_buildroot.dts
+++ b/arch/arm64/boot/dts/amlogic/txlx_t962e_r321_buildroot.dts
@@ -669,6 +669,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "si2151_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm64/boot/dts/amlogic/txlx_t962x_r311_1g.dts
+++ b/arch/arm64/boot/dts/amlogic/txlx_t962x_r311_1g.dts
@@ -626,6 +626,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "mxl661_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm64/boot/dts/amlogic/txlx_t962x_r311_2g.dts
+++ b/arch/arm64/boot/dts/amlogic/txlx_t962x_r311_2g.dts
@@ -626,6 +626,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "mxl661_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm64/boot/dts/amlogic/txlx_t962x_r311_720p.dts
+++ b/arch/arm64/boot/dts/amlogic/txlx_t962x_r311_720p.dts
@@ -625,6 +625,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "mxl661_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/arch/arm64/boot/dts/amlogic/txlx_t962x_r314.dts
+++ b/arch/arm64/boot/dts/amlogic/txlx_t962x_r314.dts
@@ -627,6 +627,7 @@
 	};

 	tuner: tuner {
+		compatible = "amlogic, tuner";
 		status = "okay";
 		tuner_name = "mxl661_tuner";
 		tuner_i2c_adap = <&i2c1>;
--- a/drivers/amlogic/atv_demod/atv_demod_access.c
+++ b/drivers/amlogic/atv_demod/atv_demod_access.c
@@ -102,8 +102,8 @@ int atvaudiodem_reg_read(unsigned int reg, unsigned int *val)
 		}
 	}
 #endif
-	if (amlatvdemod_devp->audio_reg_base)
-		*val = readl(amlatvdemod_devp->audio_reg_base + reg);
+	if (amlatvdemod_devp->audiodemod_reg_base)
+		*val = readl(amlatvdemod_devp->audiodemod_reg_base + reg);

 	return 0;
 }
@@ -128,8 +128,32 @@ int atvaudiodem_reg_write(unsigned int reg, unsigned int val)
 	}
 #endif

+	if (amlatvdemod_devp->audiodemod_reg_base)
+		writel(val, (amlatvdemod_devp->audiodemod_reg_base + reg));
+
+	return 0;
+}
+
+int atvaudio_reg_read(unsigned int *val)
+{
+	/* only 0xffd0d340 read */
+	/* bit0: I2s select in_src, 0 = atv_demod, 1 = adec */
+	/* bit1: Din5, 0 = atv_demod, 1 = adec */
+	/* bit2: L/R swap for adec audio data */
 	if (amlatvdemod_devp->audio_reg_base)
-		writel(val, (amlatvdemod_devp->audio_reg_base + reg));
+		*val = readl(amlatvdemod_devp->audio_reg_base);
+
+	return 0;
+}
+
+int atvaudio_reg_write(unsigned int val)
+{
+	/* only 0xffd0d340 write */
+	/* bit0: I2s select in_src, 0 = atv_demod, 1 = adec */
+	/* bit1: Din5, 0 = atv_demod, 1 = adec */
+	/* bit2: L/R swap for adec audio data */
+	if (amlatvdemod_devp->audio_reg_base)
+		writel(val, amlatvdemod_devp->audio_reg_base);

 	return 0;
 }
@@ -179,10 +203,10 @@ void atv_dmd_wr_reg(unsigned char block, unsigned char reg, unsigned long data)

 unsigned long atv_dmd_rd_reg(unsigned char block, unsigned char reg)
 {
-	unsigned long data = 0;
+	unsigned int data = 0;
 	unsigned int reg_addr = (block << 8) + reg * 4;

-	amlatvdemod_reg_read(reg_addr, (unsigned int *)&data);
+	amlatvdemod_reg_read(reg_addr, &data);
 	return data;
 }

--- a/drivers/amlogic/atv_demod/atv_demod_access.h
+++ b/drivers/amlogic/atv_demod/atv_demod_access.h
@@ -25,6 +25,8 @@ extern int amlatvdemod_reg_read(unsigned int reg, unsigned int *val);
 extern int amlatvdemod_reg_write(unsigned int reg, unsigned int val);
 extern int atvaudiodem_reg_read(unsigned int reg, unsigned int *val);
 extern int atvaudiodem_reg_write(unsigned int reg, unsigned int val);
+extern int atvaudio_reg_read(unsigned int *val);
+extern int atvaudio_reg_write(unsigned int val);
 extern int amlatvdemod_hiu_reg_read(unsigned int reg, unsigned int *val);
 extern int amlatvdemod_hiu_reg_write(unsigned int reg, unsigned int val);
 extern int amlatvdemod_periphs_reg_read(unsigned int reg, unsigned int *val);
--- a/drivers/amlogic/atv_demod/atv_demod_debug.c
+++ b/drivers/amlogic/atv_demod/atv_demod_debug.c
@@ -94,6 +94,8 @@
 	DEBUGFS_CREATE_NODE(audio_a2_power_threshold, 0640, dentry, u32)\
 	DEBUGFS_CREATE_NODE(audio_gain_shift, 0640, dentry, u32)\
 	DEBUGFS_CREATE_NODE(audio_gain_lpr, 0640, dentry, u32)\
+	DEBUGFS_CREATE_NODE(audio_atv_ov, 0640, dentry, u32)\
+	DEBUGFS_CREATE_NODE(audio_atv_ov_flag, 0640, dentry, u32)\
 }


@@ -176,12 +178,11 @@ static ssize_t debugfs_write(struct file *file, const char __user *userbuf,
 	char buf[20] = { 0 };
 	int len = ARRAY_SIZE(debugfs_dentry);

+	memset(buf, 0, sizeof(buf));
 	count = min_t(size_t, count, (sizeof(buf) - 1));
 	if (copy_from_user(buf, userbuf, count))
 		return -EFAULT;

-	buf[count] = 0;
-
 	/*i = sscanf(buf, "%d", &val);*/
 	i = kstrtoint(buf, 0, &val);
 	if (i == 0) {
--- a/drivers/amlogic/atv_demod/atv_demod_driver.c
+++ b/drivers/amlogic/atv_demod/atv_demod_driver.c
@@ -551,7 +551,7 @@ static int aml_atvdemod_probe(struct platform_device *pdev)

 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
-		pr_err("get demod memory resource fail.\n");
+		pr_err("no demod memory resource.\n");
 		goto fail_get_resource;
 	}

@@ -569,7 +569,7 @@ static int aml_atvdemod_probe(struct platform_device *pdev)

 	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 	if (!res) {
-		pr_err("no hiu demod memory resource.\n");
+		pr_err("no hiu memory resource.\n");
 		dev->hiu_reg_base = NULL;
 	} else {
 		size_io_reg = resource_size(res);
@@ -587,7 +587,7 @@ static int aml_atvdemod_probe(struct platform_device *pdev)

 	res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
 	if (!res) {
-		pr_err("no periphs demod memory resource.\n");
+		pr_err("no periphs memory resource.\n");
 		dev->periphs_reg_base = NULL;
 	} else {
 		size_io_reg = resource_size(res);
@@ -605,35 +605,31 @@ static int aml_atvdemod_probe(struct platform_device *pdev)

 	res = platform_get_resource(pdev, IORESOURCE_MEM, 3);
 	if (!res) {
-		pr_err("no audio demod memory resource.\n");
-		dev->audio_reg_base = NULL;
+		pr_err("no audiodemod memory resource.\n");
+		dev->audiodemod_reg_base = NULL;
 	} else {
 		size_io_reg = resource_size(res);
-		dev->audio_reg_base = devm_ioremap_nocache(
+		dev->audiodemod_reg_base = devm_ioremap_nocache(
 				&pdev->dev, res->start, size_io_reg);
-		if (!dev->audio_reg_base) {
-			pr_err("audio ioremap failed.\n");
+		if (!dev->audiodemod_reg_base) {
+			pr_err("audiodemod ioremap failed.\n");
 			goto fail_get_resource;
 		}

-		pr_info("audio start = 0x%p, size = 0x%x, base = 0x%p.\n",
+		pr_info("audiodemod start = 0x%p, size = 0x%x, base = 0x%p.\n",
 					(void *) res->start, size_io_reg,
-					dev->audio_reg_base);
+					dev->audiodemod_reg_base);
 	}

+	/* add for audio system control */
 	if (is_meson_txlx_cpu() || is_meson_txhd_cpu()) {
-		/* add for audio system control */
-		dev->audio_demod_reg_base = ioremap(
-				round_down(0xffd0d340, 0x3), 4);
+		dev->audio_reg_base = ioremap(round_down(0xffd0d340, 0x3), 4);

-		pr_info("audio_demod_reg_base = 0x%p.\n",
-				dev->audio_demod_reg_base);
+		pr_info("audio_reg_base = 0x%p.\n", dev->audio_reg_base);
 	} else if (is_meson_tl1_cpu()) {
-		dev->audio_demod_reg_base = ioremap(
-				round_down(0xff600340, 0x3), 4);
+		dev->audio_reg_base = ioremap(round_down(0xff600340, 0x3), 4);

-		pr_info("audio_demod_reg_base = 0x%p.\n",
-				dev->audio_demod_reg_base);
+		pr_info("audio_reg_base = 0x%p.\n", dev->audio_reg_base);
 	}

 	aml_atvdemod_dt_parse(dev);
--- a/drivers/amlogic/atv_demod/atv_demod_driver.h
+++ b/drivers/amlogic/atv_demod/atv_demod_driver.h
@@ -66,10 +66,10 @@ struct aml_atvdemod_device {
 	bool tuner_attached;

 	void __iomem *demod_reg_base;
-	void __iomem *audio_reg_base;
+	void __iomem *audiodemod_reg_base;
 	void __iomem *hiu_reg_base;
 	void __iomem *periphs_reg_base;
-	void __iomem *audio_demod_reg_base;
+	void __iomem *audio_reg_base;

 	unsigned int reg_23cf; /* IIR filter */
 	int btsc_sap_mode; /*0: off 1:monitor 2:auto */
--- a/drivers/amlogic/atv_demod/atv_demod_ops.c
+++ b/drivers/amlogic/atv_demod/atv_demod_ops.c
@@ -543,6 +543,7 @@ static void atvdemod_fe_try_analog_format(struct v4l2_frontend *v4l2_fe,
 	int i = 0;
 	int try_vfmt_cnt = 300;
 	int varify_cnt = 0;
+	int cvbs_std = 0;
 	v4l2_std_id std_bk = 0;
 	unsigned int broad_std = 0;
 	unsigned int audio = 0;
@@ -554,12 +555,12 @@ static void atvdemod_fe_try_analog_format(struct v4l2_frontend *v4l2_fe,
 						__func__);
 				break;
 			}
-			std_bk = aml_fe_hook_get_fmt();
-			if (std_bk) {
+			cvbs_std = aml_fe_hook_get_fmt();
+			if (cvbs_std) {
 				varify_cnt++;
-				pr_dbg("get varify_cnt:%d, cnt:%d, std_bk:0x%x\n",
+				pr_dbg("get cvbs_std varify_cnt:%d, cnt:%d, cvbs_std:0x%x\n",
 						varify_cnt, i,
-						(unsigned int) std_bk);
+						(unsigned int) cvbs_std);
 				if (((v4l2_fe->tuner_id == AM_TUNER_R840
 					|| v4l2_fe->tuner_id == AM_TUNER_R842)
 					&& varify_cnt > 0)
@@ -596,13 +597,13 @@ static void atvdemod_fe_try_analog_format(struct v4l2_frontend *v4l2_fe,
 			usleep_range(30 * 1000, 30 * 1000 + 100);
 		}

-		pr_dbg("get std_bk cnt:%d, std_bk: 0x%x\n",
-				i, (unsigned int) std_bk);
+		pr_dbg("get cvbs_std cnt:%d, cvbs_std: 0x%x\n",
+				i, (unsigned int) cvbs_std);

-		if (std_bk == 0) {
+		if (cvbs_std == 0) {
 			pr_err("%s: failed to get video fmt, assume PAL.\n",
 					__func__);
-			std_bk = TVIN_SIG_FMT_CVBS_PAL_I;
+			cvbs_std = TVIN_SIG_FMT_CVBS_PAL_I;
 			p->std = V4L2_COLOR_STD_PAL | V4L2_STD_PAL_DK;
 			p->frequency += 1;
 			p->audmode = V4L2_STD_PAL_DK;
@@ -617,7 +618,7 @@ static void atvdemod_fe_try_analog_format(struct v4l2_frontend *v4l2_fe,
 			usleep_range(20 * 1000, 20 * 1000 + 100);
 		}

-		std_bk = atvdemod_fe_tvin_fmt_to_v4l2_std(std_bk);
+		std_bk = atvdemod_fe_tvin_fmt_to_v4l2_std(cvbs_std);
 	} else {
 		/* Only search std by user setting,
 		 * so no need tvafe identify signal.
@@ -634,9 +635,14 @@ static void atvdemod_fe_try_analog_format(struct v4l2_frontend *v4l2_fe,

 	if (std_bk & V4L2_COLOR_STD_NTSC) {
 #if 1 /* For TV Signal Generator(TG39) test, NTSC need support other audio.*/
-		amlatvdemod_set_std(AML_ATV_DEMOD_VIDEO_MODE_PROP_PAL_DK);
-		broad_std = aml_audiomode_autodet(v4l2_fe);
-		audio = atvdemod_fmt_2_v4l2_std(broad_std);
+		if (cvbs_std == TVIN_SIG_FMT_CVBS_NTSC_M) {
+			broad_std = AML_ATV_DEMOD_VIDEO_MODE_PROP_PAL_M;
+			audio = V4L2_STD_NTSC_M;
+		} else {
+			amlatvdemod_set_std(AML_ATV_DEMOD_VIDEO_MODE_PROP_NTSC);
+			broad_std = aml_audiomode_autodet(v4l2_fe);
+			audio = atvdemod_fmt_2_v4l2_std(broad_std);
+		}
 #if 0 /* I don't know what's going on here */
 		if (audio == V4L2_STD_PAL_M)
 			audio = V4L2_STD_NTSC_M;
@@ -656,9 +662,15 @@ static void atvdemod_fe_try_analog_format(struct v4l2_frontend *v4l2_fe,
 #endif
 	} else {
 		/* V4L2_COLOR_STD_PAL */
-		amlatvdemod_set_std(AML_ATV_DEMOD_VIDEO_MODE_PROP_PAL_DK);
-		broad_std = aml_audiomode_autodet(v4l2_fe);
-		audio = atvdemod_fmt_2_v4l2_std(broad_std);
+		if (cvbs_std == TVIN_SIG_FMT_CVBS_PAL_M) {
+			broad_std = AML_ATV_DEMOD_VIDEO_MODE_PROP_PAL_M;
+			audio = V4L2_STD_PAL_M;
+		} else {
+			amlatvdemod_set_std(
+					AML_ATV_DEMOD_VIDEO_MODE_PROP_PAL_DK);
+			broad_std = aml_audiomode_autodet(v4l2_fe);
+			audio = atvdemod_fmt_2_v4l2_std(broad_std);
+		}
 #if 0 /* Why do this to me? We need support PAL_M.*/
 		if (audio == V4L2_STD_PAL_M) {
 			audio = atvdemod_fmt_2_v4l2_std(broad_std_except_pal_m);
--- a/drivers/amlogic/atv_demod/atv_demod_v4l2.c
+++ b/drivers/amlogic/atv_demod/atv_demod_v4l2.c
@@ -587,7 +587,7 @@ static int v4l2_property_process_get(struct v4l2_frontend *v4l2_fe,
 	return 0;
 }

-static int v4l2_frontend_ioctl_properties(struct file *filp,
+static long v4l2_frontend_ioctl_properties(struct file *filp,
 			unsigned int cmd, void *parg)
 {
 	struct v4l2_frontend *v4l2_fe = video_get_drvdata(video_devdata(filp));
--- a/drivers/amlogic/atv_demod/atvauddemod_func.c
+++ b/drivers/amlogic/atv_demod/atvauddemod_func.c
@@ -1355,14 +1355,10 @@ void set_output_left_right_exchange(unsigned int ch)
 {
 	unsigned int read = 0;

-	if (amlatvdemod_devp->audio_demod_reg_base == NULL)
-		return;
-
-	read = readl(amlatvdemod_devp->audio_demod_reg_base);
+	atvaudio_reg_read(&read);

 	if ((read & (1 << 2)) != ((ch & 0x01) << 2))
-		writel((read & ~(1 << 2)) | ((ch & 0x01) << 2),
-				amlatvdemod_devp->audio_demod_reg_base);
+		atvaudio_reg_write((read & ~(1 << 2)) | ((ch & 0x01) << 2));
 }

 #endif /* __ATVAUDDEMOD_FUN_H */
--- a/drivers/amlogic/atv_demod/atvdemod_func.c
+++ b/drivers/amlogic/atv_demod/atvdemod_func.c
@@ -96,6 +96,9 @@ unsigned int audio_a2_threshold = 0x800;
 unsigned int audio_a2_delay = 10;
 unsigned int audio_nicam_delay = 100;

+unsigned int audio_atv_ov;
+unsigned int audio_atv_ov_flag;
+
 enum AUDIO_SCAN_ID {
 	ID_PAL_I = 0,
 	ID_PAL_M,
@@ -261,6 +264,49 @@ void atv_dmd_misc(void)
 			carrier_amplif_val);
 	}

+	if (audio_atv_ov) {
+		atv_dmd_wr_long(APB_BLOCK_ADDR_SIF_STG_2,
+				0x14, 0x8000015);
+		atv_dmd_wr_long(APB_BLOCK_ADDR_SIF_STG_2,
+				0x18, 0x7ffff);
+		atv_dmd_wr_long(APB_BLOCK_ADDR_SIF_STG_2,
+				0x1c, 0x0f000);
+		atvaudio_reg_write(0x0);
+		audio_atv_ov_flag = 1;
+	} else {
+		atv_dmd_wr_long(APB_BLOCK_ADDR_SIF_STG_2,
+				0x14, 0xf400000);
+		atv_dmd_wr_long(APB_BLOCK_ADDR_SIF_STG_2,
+				0x18, 0xc000);
+		atv_dmd_wr_long(APB_BLOCK_ADDR_SIF_STG_2,
+				0x1c, 0x1f000);
+		atvaudio_reg_write(0x7);
+		audio_atv_ov_flag = 0;
+	}
+}
+
+void atv_dmd_ring_filter(bool on)
+{
+	if (!is_meson_tl1_cpu())
+		return;
+
+	if (on) {
+		atv_dmd_wr_long(APB_BLOCK_ADDR_GDE_EQUAL, 0x10, 0x8274bf);
+		atv_dmd_wr_long(APB_BLOCK_ADDR_GDE_EQUAL, 0x14, 0x1d175c);
+		atv_dmd_wr_long(APB_BLOCK_ADDR_GDE_EQUAL, 0x18, 0x2aa526);
+		atv_dmd_wr_long(APB_BLOCK_ADDR_GDE_EQUAL, 0x1c, 0x1d175c);
+		atv_dmd_wr_long(APB_BLOCK_ADDR_GDE_EQUAL, 0x20, 0x2d19e4);
+		atv_dmd_wr_long(APB_BLOCK_ADDR_GDE_EQUAL, 0x24, 0x8274bf);
+		atv_dmd_wr_long(APB_BLOCK_ADDR_GDE_EQUAL, 0x28, 0x1d175c);
+		atv_dmd_wr_long(APB_BLOCK_ADDR_GDE_EQUAL, 0x2c, 0x2aa526);
+		atv_dmd_wr_long(APB_BLOCK_ADDR_GDE_EQUAL, 0x30, 0x1d175c);
+		atv_dmd_wr_long(APB_BLOCK_ADDR_GDE_EQUAL, 0x34, 0x2d19e4);
+
+		atv_dmd_wr_long(APB_BLOCK_ADDR_GDE_EQUAL, 0x4c, 0x1);
+	} else
+		atv_dmd_wr_long(APB_BLOCK_ADDR_GDE_EQUAL, 0x4c, 0x0);
+
+	pr_err("%s do atv_dmd_ring_filter %d ...\n", __func__, on);
 }

 void atv_dmd_non_std_set(bool enable)
@@ -491,7 +537,8 @@ void configure_receiver(int Broadcast_Standard, unsigned int Tuner_IF_Frequency,
 		(Broadcast_Standard == AML_ATV_DEMOD_VIDEO_MODE_PROP_PAL_M) ||
 		(Broadcast_Standard == AML_ATV_DEMOD_VIDEO_MODE_PROP_NTSC_DK) ||
 		(Broadcast_Standard == AML_ATV_DEMOD_VIDEO_MODE_PROP_NTSC_BG) ||
-		(Broadcast_Standard == AML_ATV_DEMOD_VIDEO_MODE_PROP_NTSC_I)) {
+		(Broadcast_Standard == AML_ATV_DEMOD_VIDEO_MODE_PROP_NTSC_I) ||
+		(Broadcast_Standard == AML_ATV_DEMOD_VIDEO_MODE_PROP_NTSC_M)) {
 		gp_coeff_1[0] = 0x57777;
 		gp_coeff_1[1] = 0xdd777;
 		gp_coeff_1[2] = 0x7d777;
@@ -1748,6 +1795,12 @@ int atvdemod_init(void)
 	pr_err("%s do atv_dmd_misc ...\n", __func__);
 	atv_dmd_misc();

+	if (broad_std == AML_ATV_DEMOD_VIDEO_MODE_PROP_NTSC_M ||
+		broad_std == AML_ATV_DEMOD_VIDEO_MODE_PROP_NTSC)
+		atv_dmd_ring_filter(true);
+	else
+		atv_dmd_ring_filter(false);
+
 	pr_err("%s do atv_dmd_soft_reset ...\n", __func__);
 	/*4.software reset*/
 	atv_dmd_soft_reset();
@@ -1894,14 +1947,14 @@ int aml_audiomode_autodet(struct v4l2_frontend *v4l2_fe)
 	unsigned long carrier_power_average_max = 0;
 	unsigned long carrier_power_average[4] = {0};
 	unsigned long temp_data = 0;
-	int carrier_lock_count = 0;
-	int lock = 0;
+	int lock = 0, line_lock = 0;
 	int broad_std_final = 0;
 	int num = 0, i = 0, final_id = 0;
 	int delay_ms = 10, delay_ms_default = 10;
 	int cur_std = ID_PAL_DK;
 	bool secam_signal = false;
-
+	bool ntsc_signal = false;
+	bool has_audio = false;
 #if 0
 	temp_data = atv_dmd_rd_reg(APB_BLOCK_ADDR_SIF_STG_2, 0x02);
 	temp_data = temp_data | 0x80;/* 0x40 */
@@ -1920,7 +1973,10 @@ int aml_audiomode_autodet(struct v4l2_frontend *v4l2_fe)
 	case AML_ATV_DEMOD_VIDEO_MODE_PROP_NTSC_BG:
 	case AML_ATV_DEMOD_VIDEO_MODE_PROP_NTSC_M:
 	case AML_ATV_DEMOD_VIDEO_MODE_PROP_NTSC:
-
+		ntsc_signal = true;
+		broad_std = AML_ATV_DEMOD_VIDEO_MODE_PROP_PAL_M;
+		break;
+#if 0 /* ntsc will try other audio */
 		broad_std = AML_ATV_DEMOD_VIDEO_MODE_PROP_NTSC_M;
 		atvdemod_init();
 		temp_data = atv_dmd_rd_reg(APB_BLOCK_ADDR_SIF_STG_2, 0x02);
@@ -1928,7 +1984,7 @@ int aml_audiomode_autodet(struct v4l2_frontend *v4l2_fe)
 		atv_dmd_wr_reg(APB_BLOCK_ADDR_SIF_STG_2, 0x02, temp_data);
 		/* pr_err("%s, SECAM ,audio set SECAM_L\n", __func__); */
 		return broad_std;
-
+#endif
 	case AML_ATV_DEMOD_VIDEO_MODE_PROP_SECAM_L:
 	case AML_ATV_DEMOD_VIDEO_MODE_PROP_SECAM_DK2:
 	case AML_ATV_DEMOD_VIDEO_MODE_PROP_SECAM_DK3:
@@ -2102,9 +2158,15 @@ int aml_audiomode_autodet(struct v4l2_frontend *v4l2_fe)
 			broad_std = AML_ATV_DEMOD_VIDEO_MODE_PROP_PAL_M;
 			cur_std = ID_PAL_M;

-			p->std = V4L2_COLOR_STD_PAL | V4L2_STD_PAL_M;
-			p->frequency += 1;
-			p->audmode = V4L2_STD_PAL_M;
+			if (!ntsc_signal) {
+				p->std = V4L2_COLOR_STD_PAL | V4L2_STD_PAL_M;
+				p->frequency += 1;
+				p->audmode = V4L2_STD_PAL_M;
+			} else {
+				p->std = V4L2_COLOR_STD_NTSC | V4L2_STD_NTSC_M;
+				p->frequency += 1;
+				p->audmode = V4L2_STD_NTSC_M;
+			}

 			delay_ms = delay_ms_default;
 			break;
@@ -2132,32 +2194,37 @@ int aml_audiomode_autodet(struct v4l2_frontend *v4l2_fe)

 		/* enable audio detect function */
 		temp_data = atv_dmd_rd_reg(APB_BLOCK_ADDR_SIF_STG_2, 0x02);
-		temp_data = temp_data | 0x80;/* 0x40 */
+		temp_data = temp_data | 0x87;/* 0x40 */
 		atv_dmd_wr_reg(APB_BLOCK_ADDR_SIF_STG_2, 0x02, temp_data);

 		usleep_range(delay_ms * 1000, delay_ms * 1000 + 100);

-		carrier_lock_count = 0;
+		/* ----------------judgment signal state--------------------- */
 		i = 4;
+		has_audio = false;
 		while (i--) {
 			retrieve_vpll_carrier_lock(&lock);
-			if (lock == 0)
+			line_lock = atv_dmd_rd_byte(APB_BLOCK_ADDR_VDAGC, 0x4f);
+			if (lock == 0 && (line_lock & 0x10) == 0) {
+				has_audio = true;
 				break;
-			carrier_lock_count++;
-			if (carrier_lock_count >= 20) {
-				pr_err("%s step2, retrieve_vpll_carrier_lock failed\n",
-					__func__);
-			/* return broad_std; */
 			}
+
 			usleep_range(6000, 9000);
 		}
 		/* ----------------read carrier_power--------------------- */
-		for (i = 0; i < 100; i++) {
-			carrier_power =
-				atv_dmd_rd_reg(APB_BLOCK_ADDR_SIF_STG_2, 0x03);
-			carrier_power_max += carrier_power;
+		if (has_audio) {
+			for (i = 0; i < 100; i++) {
+				carrier_power = atv_dmd_rd_reg(
+					APB_BLOCK_ADDR_SIF_STG_2, 0x03);
+				carrier_power_max += carrier_power;
+			}
+			carrier_power = carrier_power_max/i;
+		} else {
+			carrier_power = 0;
+			pr_err("[%s] pll and line unlock.\n", __func__);
 		}
-		carrier_power = carrier_power_max/i;
+
 		carrier_power_max = 0;
 		pr_err("[%s] [num:%d] [broad_std:%d] audio carrier power: %lu. @@@@@@@@@@\n",
 			__func__, num, broad_std, carrier_power);
@@ -2170,7 +2237,7 @@ int aml_audiomode_autodet(struct v4l2_frontend *v4l2_fe)

 void aml_audio_valume_gain_set(unsigned int audio_gain)
 {
-	unsigned long audio_gain_data, temp_data;
+	unsigned long audio_gain_data = 0, temp_data = 0;

 	if (audio_gain > 0xfff) {
 		pr_err("Error: atv in gain max 7.998, min 0.002! gain = value/512\n");
@@ -2185,7 +2252,7 @@ void aml_audio_valume_gain_set(unsigned int audio_gain)

 unsigned int aml_audio_valume_gain_get(void)
 {
-	unsigned long audio_gain_data;
+	unsigned long audio_gain_data = 0;

 	audio_gain_data = atv_dmd_rd_word(APB_BLOCK_ADDR_MONO_PROC, 0x52);
 	audio_gain_data = audio_gain_data & 0xfff;
@@ -2194,7 +2261,7 @@ unsigned int aml_audio_valume_gain_get(void)

 void aml_fix_PWM_adjust(int enable)
 {
-	unsigned long  temp_data;
+	unsigned long temp_data = 0;
 	/*
 	 * temp_data = atv_dmd_rd_byte(APB_BLOCK_ADDR_AGC_PWM, 0x08);
 	 * temp_data = temp_data | 0x01;
@@ -2215,16 +2282,15 @@ void aml_fix_PWM_adjust(int enable)

 void aml_audio_overmodulation(int enable)
 {
-	static int ov_flag;
-	unsigned long tmp_v;
-	unsigned long tmp_v1;
+	unsigned long tmp_v = 0;
+	unsigned long tmp_v1 = 0;
 	u32 Broadcast_Standard = broad_std;

 	if (enable && Broadcast_Standard ==
 		AML_ATV_DEMOD_VIDEO_MODE_PROP_PAL_DK) {
 		tmp_v = atv_dmd_rd_long(APB_BLOCK_ADDR_SIF_STG_2, 0x28);
 		tmp_v = tmp_v&0xffff;
-		if (tmp_v >= 0x10 && ov_flag == 0) {
+		if (tmp_v > 0x10 && audio_atv_ov_flag == 0) {
 			tmp_v1 =
 				atv_dmd_rd_long(APB_BLOCK_ADDR_SIF_STG_2, 0);
 			tmp_v1 = (tmp_v1&0xffffff)|(1<<24);
@@ -2232,19 +2298,12 @@ void aml_audio_overmodulation(int enable)
 			atv_dmd_wr_long(APB_BLOCK_ADDR_SIF_STG_2,
 					0x14, 0x8000015);
 			atv_dmd_wr_long(APB_BLOCK_ADDR_SIF_STG_2,
-					0x1c, 0x0f000);
-		} else if (tmp_v >= 0x2500 && ov_flag == 0) {
-			tmp_v1 = atv_dmd_rd_long(APB_BLOCK_ADDR_SIF_STG_2, 0);
-			tmp_v1 = (tmp_v1&0xffffff)|(1<<24);
-			atv_dmd_wr_long(APB_BLOCK_ADDR_SIF_STG_2, 0, tmp_v1);
-			atv_dmd_wr_long(APB_BLOCK_ADDR_SIF_STG_2,
-					0x14, 0xf400015);
-			atv_dmd_wr_long(APB_BLOCK_ADDR_SIF_STG_2,
-					0x18, 0xc000);
+					0x18, 0x7ffff);
 			atv_dmd_wr_long(APB_BLOCK_ADDR_SIF_STG_2,
 					0x1c, 0x0f000);
-			ov_flag = 1;
-		} else if (tmp_v <= 0x10 && ov_flag == 1) {
+			atvaudio_reg_write(0x0);
+			audio_atv_ov_flag = 1;
+		} else if (tmp_v <= 0x10 && audio_atv_ov_flag == 1) {
 			tmp_v1 = atv_dmd_rd_long(APB_BLOCK_ADDR_SIF_STG_2, 0);
 			tmp_v1 = (tmp_v1&0xffffff)|(0<<24);
 			atv_dmd_wr_long(APB_BLOCK_ADDR_SIF_STG_2, 0, tmp_v1);
@@ -2254,7 +2313,8 @@ void aml_audio_overmodulation(int enable)
 					0x18, 0xc000);
 			atv_dmd_wr_long(APB_BLOCK_ADDR_SIF_STG_2,
 					0x1c, 0x1f000);
-			ov_flag = 0;
+			atvaudio_reg_write(0x7);
+			audio_atv_ov_flag = 0;
 		}
 	}
 }
--- a/drivers/amlogic/atv_demod/atvdemod_func.h
+++ b/drivers/amlogic/atv_demod/atvdemod_func.h
@@ -64,6 +64,7 @@ extern void read_version_register(void);
 extern void check_communication_interface(void);
 extern void power_on_receiver(void);
 extern void atv_dmd_misc(void);
+extern void atv_dmd_ring_filter(bool on);
 extern void configure_receiver(int Broadcast_Standard,
 			       unsigned int Tuner_IF_Frequency,
 			       int Tuner_Input_IF_inverted, int GDE_Curve,