ENGR00315894-78 vadc: Add vadc module

Add vadc module.
Both PAL and NTSC mode can work.

Signed-off-by: Sandor Yu <R01008@freescale.com>
Signed-off-by: Ye.Li <B37916@freescale.com>
(cherry picked from commit 03c31ae30c1e81c99f6824221e4801433445e04a)
Signed-off-by: Peng Fan <Peng.Fan@freescale.com>

1 files changed, 372 insertions, 0 deletions

diff --git a/drivers/video/mxc_vadc.c b/drivers/video/mxc_vadc.c
new file mode 100644
index 0000000..b1f7a09
--- /dev/null
+++ b/drivers/video/mxc_vadc.c
@@ -0,0 +1,372 @@
+/*
+ * Copyright (C) 2014 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/clock.h>
+#include <asm/errno.h>
+#include <asm/io.h>
+
+#include <linux/string.h>
+#include <linux/list.h>
+#include <gis.h>
+
+#include "mxc_vadc.h"
+
+#define reg32_write(addr, val) __raw_writel(val, addr)
+#define reg32_read(addr)       __raw_readl(addr)
+#define reg32setbit(addr, bitpos) \
+	reg32_write((addr), (reg32_read((addr)) | (1<<(bitpos))))
+
+#define reg32clrbit(addr, bitpos) \
+	reg32_write((addr), (reg32_read((addr)) & (0xFFFFFFFF ^ (1<<(bitpos)))))
+
+void __iomem *vafe_regbase;
+void __iomem *vdec_regbase;
+
+enum {
+	STD_NTSC = 0,
+	STD_PAL,
+};
+
+/* Video format structure. */
+struct video_fmt_t{
+	int v4l2_id;		/* Video for linux ID. */
+	char name[16];		/* Name (e.g., "NTSC", "PAL", etc.) */
+	u16 active_width;	/* Active width. */
+	u16 active_height;	/* Active height. */
+};
+
+/* Description of video formats supported.
+ *
+ *  PAL: active=720x576.
+ *  NTSC:active=720x480.
+ */
+static struct video_fmt_t video_fmts[] = {
+	/* NTSC */
+	{
+	 .v4l2_id = STD_NTSC,
+	 .name = "NTSC",
+	 .active_width = 720,
+	 .active_height = 480,
+	 },
+	/* (B, G, H, I, N) PAL */
+	{
+	 .v4l2_id = STD_PAL,
+	 .name = "PAL",
+	 .active_width = 720,
+	 .active_height = 576,
+	 },
+};
+
+static void afe_voltage_clampingmode(void)
+{
+	reg32_write(AFE_CLAMP, 0x07);
+	reg32_write(AFE_CLMPAMP, 0x60);
+	reg32_write(AFE_CLMPDAT, 0xF0);
+}
+
+static void afe_alwayson_clampingmode(void)
+{
+	reg32_write(AFE_CLAMP, 0x15);
+	reg32_write(AFE_CLMPDAT, 0x08);
+	reg32_write(AFE_CLMPAMP, 0x00);
+}
+
+static void afe_init(void)
+{
+	reg32_write(AFE_PDBUF, 0x1f);
+	reg32_write(AFE_PDADC, 0x0f);
+	reg32_write(AFE_PDSARH, 0x01);
+	reg32_write(AFE_PDSARL, 0xff);
+	reg32_write(AFE_PDADCRFH, 0x01);
+	reg32_write(AFE_PDADCRFL, 0xff);
+	reg32_write(AFE_ICTRL, 0x3a);
+	reg32_write(AFE_ICTLSTG, 0x1e);
+
+	reg32_write(AFE_RCTRLSTG, 0x1e);
+	reg32_write(AFE_INPBUF, 0x035);
+	reg32_write(AFE_INPFLT, 0x02);
+	reg32_write(AFE_ADCDGN, 0x40);
+	reg32_write(AFE_TSTSEL, 0x10);
+
+	reg32_write(AFE_ACCTST, 0x07);
+
+	reg32_write(AFE_BGREG, 0x08);
+
+	reg32_write(AFE_ADCGN, 0x09);
+
+	/* set current controlled clamping
+	* always on, low current */
+	reg32_write(AFE_CLAMP, 0x11);
+	reg32_write(AFE_CLMPAMP, 0x08);
+}
+
+static void vdec_mode_timing_init(u32 std)
+{
+	if (std == STD_NTSC) {
+		/* NTSC 720x480 */
+		printf("NTSC\n");
+		reg32_write(VDEC_HACTS, 0x66);
+		reg32_write(VDEC_HACTE, 0x24);
+
+		reg32_write(VDEC_VACTS, 0x29);
+		reg32_write(VDEC_VACTE, 0x04);
+
+		/* set V Position */
+		reg32_write(VDEC_VRTPOS, 0x2);
+	} else if (std == STD_PAL) {
+		/* PAL 720x576 */
+		printf("PAL\n");
+		reg32_write(VDEC_HACTS, 0x66);
+		reg32_write(VDEC_HACTE, 0x24);
+
+		reg32_write(VDEC_VACTS, 0x29);
+		reg32_write(VDEC_VACTE, 0x04);
+
+		/* set V Position */
+		reg32_write(VDEC_VRTPOS, 0x6);
+	} else
+		printf("Error not support video mode\n");
+
+	/* set H Position */
+	reg32_write(VDEC_HZPOS, 0x60);
+
+	/* set H ignore start */
+	reg32_write(VDEC_HSIGS, 0xf8);
+
+	/* set H ignore end */
+	reg32_write(VDEC_HSIGE, 0x18);
+}
+
+/*
+* vdec_init()
+* Initialises the VDEC registers
+* Returns: nothing
+*/
+static void vdec_init(struct sensor_data *vadc)
+{
+	/* Get work mode PAL or NTSC
+	 * delay 500ms wait vdec detect input format*/
+	udelay(500*1000);
+	vadc_get_std(vadc);
+
+	vdec_mode_timing_init(vadc->std_id);
+
+	/* vcr detect threshold high, automatic detections */
+	reg32_write(VDEC_VSCON2, 0);
+
+	reg32_write(VDEC_BASE + 0x110, 0x01);
+
+	/* set the noramp mode on the Hloop PLL. */
+	reg32_write(VDEC_BASE+(0x14*4), 0x10);
+
+	/* set the YC relative delay.*/
+	reg32_write(VDEC_YCDEL, 0x90);
+
+	/* setup the Hpll */
+	reg32_write(VDEC_BASE+(0x13*4), 0x13);
+
+	/* setup the 2d comb */
+	/* set the gain of the Hdetail output to 3
+	 * set the notch alpha gain to 1 */
+	reg32_write(VDEC_CFC2, 0x34);
+
+	/* setup various 2d comb bits.*/
+	reg32_write(VDEC_BASE+(0x02*4), 0x01);
+	reg32_write(VDEC_BASE+(0x03*4), 0x18);
+	reg32_write(VDEC_BASE+(0x04*4), 0x34);
+
+	/* set the start of the burst gate */
+	reg32_write(VDEC_BRSTGT, 0x30);
+
+	/* set 1f motion gain */
+	reg32_write(VDEC_BASE+(0x0f*4), 0x20);
+
+	/* set the 1F chroma motion detector thresh for colour reverse detection */
+	reg32_write(VDEC_THSH1, 0x02);
+	reg32_write(VDEC_BASE+(0x4a*4), 0x20);
+	reg32_write(VDEC_BASE+(0x4b*4), 0x08);
+
+	reg32_write(VDEC_BASE+(0x4c*4), 0x08);
+
+	/* set the threshold for the narrow/wide adaptive chroma BW */
+	reg32_write(VDEC_BASE+(0x20*4), 0x20);
+
+	/* turn up the colour with the new colour gain reg */
+	/* hue: */
+	reg32_write(VDEC_HUE, 0x00);
+
+	/* cbgain: 22 B4 */
+	reg32_write(VDEC_CBGN, 0xb4);
+	/* cr gain 80 */
+	reg32_write(VDEC_CRGN, 0x80);
+	/* luma gain (contrast) */
+	reg32_write(VDEC_CNTR, 0x80);
+
+	/* setup the signed black level register, brightness */
+	reg32_write(VDEC_BRT, 0x00);
+
+	/* filter the standard detection
+	 * enable the comb for the ntsc443 */
+	reg32_write(VDEC_STDDBG, 0x23);
+
+	/* setup chroma kill thresh for no chroma */
+	reg32_write(VDEC_CHBTH, 0x0);
+
+	/* set chroma loop to wider BW
+	 * no set it to normal BW. i fixed the bw problem.*/
+	reg32_write(VDEC_YCDEL, 0x00);
+
+	/* set the compensation in the chroma loop for the Hloop
+	 * set the ratio for the nonarithmetic 3d comb modes.*/
+	reg32_write(VDEC_BASE + (0x1d*4), 0x90);
+
+	/* set the threshold for the nonarithmetic mode for the 2d comb
+	 * the higher the value the more Fc Fh offset we will tolerate before turning off the comb. */
+	reg32_write(VDEC_BASE + (0x33*4), 0xa0);
+
+	/* setup the bluescreen output colour */
+	reg32_write(VDEC_BASE + (0x3d*4), 35);
+	reg32_write(VDEC_BLSCRCR, 114);
+	reg32_write(VDEC_BLSCRCB, 212);
+
+	/* disable the active blanking */
+	reg32_write(VDEC_BASE + (0x15*4), 0x02);
+
+	/* setup the luma agc for automatic gain. */
+	reg32_write(VDEC_LMAGC2, 0x5e);
+	reg32_write(VDEC_BASE + (0x40*4), 0x81);
+
+	/* setup chroma agc */
+	reg32_write(VDEC_CHAGC2, 0xa0);
+	reg32_write(VDEC_CHAGC1, 0x01);
+
+	/* setup the MV thresh lower nibble
+	 * setup the sync top cap, upper nibble */
+	reg32_write(VDEC_BASE + (0x3a*4), 0x80);
+	reg32_write(VDEC_SHPIMP, 0x00);
+
+	/* setup the vsync block */
+	reg32_write(VDEC_VSCON1, 0x87);
+
+	/* set the nosignal threshold
+	 * set the vsync threshold */
+	reg32_write(VDEC_VSSGTH, 0x35);
+
+	/* set length for min hphase filter (or saturate limit if saturate is chosen) */
+	reg32_write(VDEC_BASE + (0x45*4), 0x40);
+
+	/* enable the internal resampler,
+	 * select min filter not saturate for hphase noise filter for vcr detect.
+	 * enable vcr pause mode different field lengths */
+	reg32_write(VDEC_BASE + (0x46*4), 0x90);
+
+	/* disable VCR detection, lock to the Hsync rather than the Vsync */
+	reg32_write(VDEC_VSCON2, 0x04);
+
+	/* set tiplevel goal for dc clamp. */
+	reg32_write(VDEC_BASE + (0x3c*4), 0xB0);
+
+	/* override SECAM detection and force SECAM off */
+	reg32_write(VDEC_BASE + (0x2f*4), 0x20);
+
+	/* Set r3d_hardblend in 3D control2 reg */
+	reg32_write(VDEC_BASE + (0x0c*4), 0x04);
+}
+
+/* set Input selector & input pull-downs */
+static void vadc_select_input(int vadc_in)
+{
+	switch (vadc_in) {
+	case 0:
+		reg32_write(AFE_INPFLT, 0x02);
+		reg32_write(AFE_OFFDRV, 0x00);
+		reg32_write(AFE_INPCONFIG, 0x1e);
+		break;
+	case 1:
+		reg32_write(AFE_INPFLT, 0x02);
+		reg32_write(AFE_OFFDRV, 0x00);
+		reg32_write(AFE_INPCONFIG, 0x2d);
+		break;
+	case 2:
+		reg32_write(AFE_INPFLT, 0x02);
+		reg32_write(AFE_OFFDRV, 0x00);
+		reg32_write(AFE_INPCONFIG, 0x4b);
+		break;
+	case 3:
+		reg32_write(AFE_INPFLT, 0x02);
+		reg32_write(AFE_OFFDRV, 0x00);
+		reg32_write(AFE_INPCONFIG, 0x87);
+		break;
+	default:
+		printf("error video input %d\n", vadc_in);
+	}
+}
+
+/*!
+ * Return attributes of current video standard.
+ * Since this device autodetects the current standard, this function also
+ * sets the values that need to be changed if the standard changes.
+ * There is no set std equivalent function.
+ *
+ *  @return		None.
+ */
+void vadc_get_std(struct sensor_data *vadc)
+{
+	int tmp;
+	int idx;
+
+	/* Read PAL mode detected result */
+	tmp = reg32_read(VDEC_VIDMOD);
+	tmp &= (VDEC_VIDMOD_PAL_MASK | VDEC_VIDMOD_M625_MASK);
+
+	if (tmp)
+		idx = STD_PAL;
+	else
+		idx = STD_NTSC;
+
+	vadc->std_id = idx;
+	vadc->pixel_fmt = FMT_YUV444;
+	vadc->width = video_fmts[idx].active_width;
+	vadc->height = video_fmts[idx].active_height;
+}
+
+void vadc_config(u32 vadc_in)
+{
+	struct sensor_data vadc;
+
+	/* map vafe,vdec,gpr,gpc address  */
+	vafe_regbase = (u32 *)VADC_BASE_ADDR;
+	vdec_regbase = (u32 *)VDEC_BASE_ADDR;
+
+	vadc_power_up();
+
+	/* clock config for vadc */
+	reg32_write(VDEC_BASE + 0x320, 0xe3);
+	reg32_write(VDEC_BASE + 0x324, 0x38);
+	reg32_write(VDEC_BASE + 0x328, 0x8e);
+	reg32_write(VDEC_BASE + 0x32c, 0x23);
+	mxs_set_vadcclk();
+
+	afe_init();
+
+	/* select Video Input 0-3 */
+	vadc_select_input(vadc_in);
+
+	afe_voltage_clampingmode();
+
+	vdec_init(&vadc);
+
+	/*
+	* current control loop will move sinewave input off below
+	* the bottom of the signal range visible when the testbus is viewed as magnitude,
+	* so have to break before this point while capturing ENOB data:
+	*/
+	afe_alwayson_clampingmode();
+}
+