summaryrefslogtreecommitdiffstats
path: root/drivers/media/i2c/adv748x/adv748x-afe.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/i2c/adv748x/adv748x-afe.c')
-rw-r--r--drivers/media/i2c/adv748x/adv748x-afe.c559
1 files changed, 559 insertions, 0 deletions
diff --git a/drivers/media/i2c/adv748x/adv748x-afe.c b/drivers/media/i2c/adv748x/adv748x-afe.c
new file mode 100644
index 000000000..edd25e895
--- /dev/null
+++ b/drivers/media/i2c/adv748x/adv748x-afe.c
@@ -0,0 +1,559 @@
+/*
+ * Driver for Analog Devices ADV748X 8 channel analog front end (AFE) receiver
+ * with standard definition processor (SDP)
+ *
+ * Copyright (C) 2017 Renesas Electronics Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/v4l2-dv-timings.h>
+
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-dv-timings.h>
+#include <media/v4l2-ioctl.h>
+
+#include "adv748x.h"
+
+/* -----------------------------------------------------------------------------
+ * SDP
+ */
+
+#define ADV748X_AFE_STD_AD_PAL_BG_NTSC_J_SECAM 0x0
+#define ADV748X_AFE_STD_AD_PAL_BG_NTSC_J_SECAM_PED 0x1
+#define ADV748X_AFE_STD_AD_PAL_N_NTSC_J_SECAM 0x2
+#define ADV748X_AFE_STD_AD_PAL_N_NTSC_M_SECAM 0x3
+#define ADV748X_AFE_STD_NTSC_J 0x4
+#define ADV748X_AFE_STD_NTSC_M 0x5
+#define ADV748X_AFE_STD_PAL60 0x6
+#define ADV748X_AFE_STD_NTSC_443 0x7
+#define ADV748X_AFE_STD_PAL_BG 0x8
+#define ADV748X_AFE_STD_PAL_N 0x9
+#define ADV748X_AFE_STD_PAL_M 0xa
+#define ADV748X_AFE_STD_PAL_M_PED 0xb
+#define ADV748X_AFE_STD_PAL_COMB_N 0xc
+#define ADV748X_AFE_STD_PAL_COMB_N_PED 0xd
+#define ADV748X_AFE_STD_PAL_SECAM 0xe
+#define ADV748X_AFE_STD_PAL_SECAM_PED 0xf
+
+static int adv748x_afe_read_ro_map(struct adv748x_state *state, u8 reg)
+{
+ int ret;
+
+ /* Select SDP Read-Only Main Map */
+ ret = sdp_write(state, ADV748X_SDP_MAP_SEL,
+ ADV748X_SDP_MAP_SEL_RO_MAIN);
+ if (ret < 0)
+ return ret;
+
+ return sdp_read(state, reg);
+}
+
+static int adv748x_afe_status(struct adv748x_afe *afe, u32 *signal,
+ v4l2_std_id *std)
+{
+ struct adv748x_state *state = adv748x_afe_to_state(afe);
+ int info;
+
+ /* Read status from reg 0x10 of SDP RO Map */
+ info = adv748x_afe_read_ro_map(state, ADV748X_SDP_RO_10);
+ if (info < 0)
+ return info;
+
+ if (signal)
+ *signal = info & ADV748X_SDP_RO_10_IN_LOCK ?
+ 0 : V4L2_IN_ST_NO_SIGNAL;
+
+ if (!std)
+ return 0;
+
+ /* Standard not valid if there is no signal */
+ if (!(info & ADV748X_SDP_RO_10_IN_LOCK)) {
+ *std = V4L2_STD_UNKNOWN;
+ return 0;
+ }
+
+ switch (info & 0x70) {
+ case 0x00:
+ *std = V4L2_STD_NTSC;
+ break;
+ case 0x10:
+ *std = V4L2_STD_NTSC_443;
+ break;
+ case 0x20:
+ *std = V4L2_STD_PAL_M;
+ break;
+ case 0x30:
+ *std = V4L2_STD_PAL_60;
+ break;
+ case 0x40:
+ *std = V4L2_STD_PAL;
+ break;
+ case 0x50:
+ *std = V4L2_STD_SECAM;
+ break;
+ case 0x60:
+ *std = V4L2_STD_PAL_Nc | V4L2_STD_PAL_N;
+ break;
+ case 0x70:
+ *std = V4L2_STD_SECAM;
+ break;
+ default:
+ *std = V4L2_STD_UNKNOWN;
+ break;
+ }
+
+ return 0;
+}
+
+static void adv748x_afe_fill_format(struct adv748x_afe *afe,
+ struct v4l2_mbus_framefmt *fmt)
+{
+ memset(fmt, 0, sizeof(*fmt));
+
+ fmt->code = MEDIA_BUS_FMT_UYVY8_2X8;
+ fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
+ fmt->field = V4L2_FIELD_ALTERNATE;
+
+ fmt->width = 720;
+ fmt->height = afe->curr_norm & V4L2_STD_525_60 ? 480 : 576;
+
+ /* Field height */
+ fmt->height /= 2;
+}
+
+static int adv748x_afe_std(v4l2_std_id std)
+{
+ if (std == V4L2_STD_PAL_60)
+ return ADV748X_AFE_STD_PAL60;
+ if (std == V4L2_STD_NTSC_443)
+ return ADV748X_AFE_STD_NTSC_443;
+ if (std == V4L2_STD_PAL_N)
+ return ADV748X_AFE_STD_PAL_N;
+ if (std == V4L2_STD_PAL_M)
+ return ADV748X_AFE_STD_PAL_M;
+ if (std == V4L2_STD_PAL_Nc)
+ return ADV748X_AFE_STD_PAL_COMB_N;
+ if (std & V4L2_STD_NTSC)
+ return ADV748X_AFE_STD_NTSC_M;
+ if (std & V4L2_STD_PAL)
+ return ADV748X_AFE_STD_PAL_BG;
+ if (std & V4L2_STD_SECAM)
+ return ADV748X_AFE_STD_PAL_SECAM;
+
+ return -EINVAL;
+}
+
+static void adv748x_afe_set_video_standard(struct adv748x_state *state,
+ int sdpstd)
+{
+ sdp_clrset(state, ADV748X_SDP_VID_SEL, ADV748X_SDP_VID_SEL_MASK,
+ (sdpstd & 0xf) << ADV748X_SDP_VID_SEL_SHIFT);
+}
+
+static int adv748x_afe_s_input(struct adv748x_afe *afe, unsigned int input)
+{
+ struct adv748x_state *state = adv748x_afe_to_state(afe);
+
+ return sdp_write(state, ADV748X_SDP_INSEL, input);
+}
+
+static int adv748x_afe_g_pixelaspect(struct v4l2_subdev *sd,
+ struct v4l2_fract *aspect)
+{
+ struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
+
+ if (afe->curr_norm & V4L2_STD_525_60) {
+ aspect->numerator = 11;
+ aspect->denominator = 10;
+ } else {
+ aspect->numerator = 54;
+ aspect->denominator = 59;
+ }
+
+ return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * v4l2_subdev_video_ops
+ */
+
+static int adv748x_afe_g_std(struct v4l2_subdev *sd, v4l2_std_id *norm)
+{
+ struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
+
+ *norm = afe->curr_norm;
+
+ return 0;
+}
+
+static int adv748x_afe_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
+{
+ struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
+ struct adv748x_state *state = adv748x_afe_to_state(afe);
+ int afe_std = adv748x_afe_std(std);
+
+ if (afe_std < 0)
+ return afe_std;
+
+ mutex_lock(&state->mutex);
+
+ adv748x_afe_set_video_standard(state, afe_std);
+ afe->curr_norm = std;
+
+ mutex_unlock(&state->mutex);
+
+ return 0;
+}
+
+static int adv748x_afe_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
+{
+ struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
+ struct adv748x_state *state = adv748x_afe_to_state(afe);
+ int afe_std;
+ int ret;
+
+ mutex_lock(&state->mutex);
+
+ if (afe->streaming) {
+ ret = -EBUSY;
+ goto unlock;
+ }
+
+ /* Set auto detect mode */
+ adv748x_afe_set_video_standard(state,
+ ADV748X_AFE_STD_AD_PAL_BG_NTSC_J_SECAM);
+
+ msleep(100);
+
+ /* Read detected standard */
+ ret = adv748x_afe_status(afe, NULL, std);
+
+ afe_std = adv748x_afe_std(afe->curr_norm);
+ if (afe_std < 0)
+ goto unlock;
+
+ /* Restore original state */
+ adv748x_afe_set_video_standard(state, afe_std);
+
+unlock:
+ mutex_unlock(&state->mutex);
+
+ return ret;
+}
+
+static int adv748x_afe_g_tvnorms(struct v4l2_subdev *sd, v4l2_std_id *norm)
+{
+ *norm = V4L2_STD_ALL;
+
+ return 0;
+}
+
+static int adv748x_afe_g_input_status(struct v4l2_subdev *sd, u32 *status)
+{
+ struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
+ struct adv748x_state *state = adv748x_afe_to_state(afe);
+ int ret;
+
+ mutex_lock(&state->mutex);
+
+ ret = adv748x_afe_status(afe, status, NULL);
+
+ mutex_unlock(&state->mutex);
+
+ return ret;
+}
+
+static int adv748x_afe_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
+ struct adv748x_state *state = adv748x_afe_to_state(afe);
+ u32 signal = V4L2_IN_ST_NO_SIGNAL;
+ int ret;
+
+ mutex_lock(&state->mutex);
+
+ if (enable) {
+ ret = adv748x_afe_s_input(afe, afe->input);
+ if (ret)
+ goto unlock;
+ }
+
+ ret = adv748x_txb_power(state, enable);
+ if (ret)
+ goto unlock;
+
+ afe->streaming = enable;
+
+ adv748x_afe_status(afe, &signal, NULL);
+ if (signal != V4L2_IN_ST_NO_SIGNAL)
+ adv_dbg(state, "Detected SDP signal\n");
+ else
+ adv_dbg(state, "Couldn't detect SDP video signal\n");
+
+unlock:
+ mutex_unlock(&state->mutex);
+
+ return ret;
+}
+
+static const struct v4l2_subdev_video_ops adv748x_afe_video_ops = {
+ .g_std = adv748x_afe_g_std,
+ .s_std = adv748x_afe_s_std,
+ .querystd = adv748x_afe_querystd,
+ .g_tvnorms = adv748x_afe_g_tvnorms,
+ .g_input_status = adv748x_afe_g_input_status,
+ .s_stream = adv748x_afe_s_stream,
+ .g_pixelaspect = adv748x_afe_g_pixelaspect,
+};
+
+/* -----------------------------------------------------------------------------
+ * v4l2_subdev_pad_ops
+ */
+
+static int adv748x_afe_propagate_pixelrate(struct adv748x_afe *afe)
+{
+ struct v4l2_subdev *tx;
+
+ tx = adv748x_get_remote_sd(&afe->pads[ADV748X_AFE_SOURCE]);
+ if (!tx)
+ return -ENOLINK;
+
+ /*
+ * The ADV748x ADC sampling frequency is twice the externally supplied
+ * clock whose frequency is required to be 28.63636 MHz. It oversamples
+ * with a factor of 4 resulting in a pixel rate of 14.3180180 MHz.
+ */
+ return adv748x_csi2_set_pixelrate(tx, 14318180);
+}
+
+static int adv748x_afe_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ if (code->index != 0)
+ return -EINVAL;
+
+ code->code = MEDIA_BUS_FMT_UYVY8_2X8;
+
+ return 0;
+}
+
+static int adv748x_afe_get_format(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *sdformat)
+{
+ struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
+ struct v4l2_mbus_framefmt *mbusformat;
+
+ /* It makes no sense to get the format of the analog sink pads */
+ if (sdformat->pad != ADV748X_AFE_SOURCE)
+ return -EINVAL;
+
+ if (sdformat->which == V4L2_SUBDEV_FORMAT_TRY) {
+ mbusformat = v4l2_subdev_get_try_format(sd, cfg, sdformat->pad);
+ sdformat->format = *mbusformat;
+ } else {
+ adv748x_afe_fill_format(afe, &sdformat->format);
+ adv748x_afe_propagate_pixelrate(afe);
+ }
+
+ return 0;
+}
+
+static int adv748x_afe_set_format(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *sdformat)
+{
+ struct v4l2_mbus_framefmt *mbusformat;
+
+ /* It makes no sense to get the format of the analog sink pads */
+ if (sdformat->pad != ADV748X_AFE_SOURCE)
+ return -EINVAL;
+
+ if (sdformat->which == V4L2_SUBDEV_FORMAT_ACTIVE)
+ return adv748x_afe_get_format(sd, cfg, sdformat);
+
+ mbusformat = v4l2_subdev_get_try_format(sd, cfg, sdformat->pad);
+ *mbusformat = sdformat->format;
+
+ return 0;
+}
+
+static const struct v4l2_subdev_pad_ops adv748x_afe_pad_ops = {
+ .enum_mbus_code = adv748x_afe_enum_mbus_code,
+ .set_fmt = adv748x_afe_set_format,
+ .get_fmt = adv748x_afe_get_format,
+};
+
+/* -----------------------------------------------------------------------------
+ * v4l2_subdev_ops
+ */
+
+static const struct v4l2_subdev_ops adv748x_afe_ops = {
+ .video = &adv748x_afe_video_ops,
+ .pad = &adv748x_afe_pad_ops,
+};
+
+/* -----------------------------------------------------------------------------
+ * Controls
+ */
+
+static const char * const afe_ctrl_frp_menu[] = {
+ "Disabled",
+ "Solid Blue",
+ "Color Bars",
+ "Grey Ramp",
+ "Cb Ramp",
+ "Cr Ramp",
+ "Boundary"
+};
+
+static int adv748x_afe_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct adv748x_afe *afe = adv748x_ctrl_to_afe(ctrl);
+ struct adv748x_state *state = adv748x_afe_to_state(afe);
+ bool enable;
+ int ret;
+
+ ret = sdp_write(state, 0x0e, 0x00);
+ if (ret < 0)
+ return ret;
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ ret = sdp_write(state, ADV748X_SDP_BRI, ctrl->val);
+ break;
+ case V4L2_CID_HUE:
+ /* Hue is inverted according to HSL chart */
+ ret = sdp_write(state, ADV748X_SDP_HUE, -ctrl->val);
+ break;
+ case V4L2_CID_CONTRAST:
+ ret = sdp_write(state, ADV748X_SDP_CON, ctrl->val);
+ break;
+ case V4L2_CID_SATURATION:
+ ret = sdp_write(state, ADV748X_SDP_SD_SAT_U, ctrl->val);
+ if (ret)
+ break;
+ ret = sdp_write(state, ADV748X_SDP_SD_SAT_V, ctrl->val);
+ break;
+ case V4L2_CID_TEST_PATTERN:
+ enable = !!ctrl->val;
+
+ /* Enable/Disable Color bar test patterns */
+ ret = sdp_clrset(state, ADV748X_SDP_DEF, ADV748X_SDP_DEF_VAL_EN,
+ enable);
+ if (ret)
+ break;
+ ret = sdp_clrset(state, ADV748X_SDP_FRP, ADV748X_SDP_FRP_MASK,
+ enable ? ctrl->val - 1 : 0);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops adv748x_afe_ctrl_ops = {
+ .s_ctrl = adv748x_afe_s_ctrl,
+};
+
+static int adv748x_afe_init_controls(struct adv748x_afe *afe)
+{
+ struct adv748x_state *state = adv748x_afe_to_state(afe);
+
+ v4l2_ctrl_handler_init(&afe->ctrl_hdl, 5);
+
+ /* Use our mutex for the controls */
+ afe->ctrl_hdl.lock = &state->mutex;
+
+ v4l2_ctrl_new_std(&afe->ctrl_hdl, &adv748x_afe_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, ADV748X_SDP_BRI_MIN,
+ ADV748X_SDP_BRI_MAX, 1, ADV748X_SDP_BRI_DEF);
+ v4l2_ctrl_new_std(&afe->ctrl_hdl, &adv748x_afe_ctrl_ops,
+ V4L2_CID_CONTRAST, ADV748X_SDP_CON_MIN,
+ ADV748X_SDP_CON_MAX, 1, ADV748X_SDP_CON_DEF);
+ v4l2_ctrl_new_std(&afe->ctrl_hdl, &adv748x_afe_ctrl_ops,
+ V4L2_CID_SATURATION, ADV748X_SDP_SAT_MIN,
+ ADV748X_SDP_SAT_MAX, 1, ADV748X_SDP_SAT_DEF);
+ v4l2_ctrl_new_std(&afe->ctrl_hdl, &adv748x_afe_ctrl_ops,
+ V4L2_CID_HUE, ADV748X_SDP_HUE_MIN,
+ ADV748X_SDP_HUE_MAX, 1, ADV748X_SDP_HUE_DEF);
+
+ v4l2_ctrl_new_std_menu_items(&afe->ctrl_hdl, &adv748x_afe_ctrl_ops,
+ V4L2_CID_TEST_PATTERN,
+ ARRAY_SIZE(afe_ctrl_frp_menu) - 1,
+ 0, 0, afe_ctrl_frp_menu);
+
+ afe->sd.ctrl_handler = &afe->ctrl_hdl;
+ if (afe->ctrl_hdl.error) {
+ v4l2_ctrl_handler_free(&afe->ctrl_hdl);
+ return afe->ctrl_hdl.error;
+ }
+
+ return v4l2_ctrl_handler_setup(&afe->ctrl_hdl);
+}
+
+int adv748x_afe_init(struct adv748x_afe *afe)
+{
+ struct adv748x_state *state = adv748x_afe_to_state(afe);
+ int ret;
+ unsigned int i;
+
+ afe->input = 0;
+ afe->streaming = false;
+ afe->curr_norm = V4L2_STD_NTSC_M;
+
+ adv748x_subdev_init(&afe->sd, state, &adv748x_afe_ops,
+ MEDIA_ENT_F_ATV_DECODER, "afe");
+
+ /* Identify the first connector found as a default input if set */
+ for (i = ADV748X_PORT_AIN0; i <= ADV748X_PORT_AIN7; i++) {
+ /* Inputs and ports are 1-indexed to match the data sheet */
+ if (state->endpoints[i]) {
+ afe->input = i;
+ break;
+ }
+ }
+
+ adv748x_afe_s_input(afe, afe->input);
+
+ adv_dbg(state, "AFE Default input set to %d\n", afe->input);
+
+ /* Entity pads and sinks are 0-indexed to match the pads */
+ for (i = ADV748X_AFE_SINK_AIN0; i <= ADV748X_AFE_SINK_AIN7; i++)
+ afe->pads[i].flags = MEDIA_PAD_FL_SINK;
+
+ afe->pads[ADV748X_AFE_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
+
+ ret = media_entity_pads_init(&afe->sd.entity, ADV748X_AFE_NR_PADS,
+ afe->pads);
+ if (ret)
+ return ret;
+
+ ret = adv748x_afe_init_controls(afe);
+ if (ret)
+ goto error;
+
+ return 0;
+
+error:
+ media_entity_cleanup(&afe->sd.entity);
+
+ return ret;
+}
+
+void adv748x_afe_cleanup(struct adv748x_afe *afe)
+{
+ v4l2_device_unregister_subdev(&afe->sd);
+ media_entity_cleanup(&afe->sd.entity);
+ v4l2_ctrl_handler_free(&afe->ctrl_hdl);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-04 13:42:45 +0000