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path: root/drivers/media/pci/saa7134/saa6752hs.c
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Diffstat (limited to 'drivers/media/pci/saa7134/saa6752hs.c')
-rw-r--r--drivers/media/pci/saa7134/saa6752hs.c1012
1 files changed, 1012 insertions, 0 deletions
diff --git a/drivers/media/pci/saa7134/saa6752hs.c b/drivers/media/pci/saa7134/saa6752hs.c
new file mode 100644
index 0000000..f147b05
--- /dev/null
+++ b/drivers/media/pci/saa7134/saa6752hs.c
@@ -0,0 +1,1012 @@
+ /*
+ saa6752hs - i2c-driver for the saa6752hs by Philips
+
+ Copyright (C) 2004 Andrew de Quincey
+
+ AC-3 support:
+
+ Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License vs published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mvss Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/poll.h>
+#include <linux/i2c.h>
+#include <linux/types.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-chip-ident.h>
+#include <linux/init.h>
+#include <linux/crc32.h>
+
+#define MPEG_VIDEO_TARGET_BITRATE_MAX 27000
+#define MPEG_VIDEO_MAX_BITRATE_MAX 27000
+#define MPEG_TOTAL_TARGET_BITRATE_MAX 27000
+#define MPEG_PID_MAX ((1 << 14) - 1)
+
+
+MODULE_DESCRIPTION("device driver for saa6752hs MPEG2 encoder");
+MODULE_AUTHOR("Andrew de Quincey");
+MODULE_LICENSE("GPL");
+
+enum saa6752hs_videoformat {
+ SAA6752HS_VF_D1 = 0, /* standard D1 video format: 720x576 */
+ SAA6752HS_VF_2_3_D1 = 1,/* 2/3D1 video format: 480x576 */
+ SAA6752HS_VF_1_2_D1 = 2,/* 1/2D1 video format: 352x576 */
+ SAA6752HS_VF_SIF = 3, /* SIF video format: 352x288 */
+ SAA6752HS_VF_UNKNOWN,
+};
+
+struct saa6752hs_mpeg_params {
+ /* transport streams */
+ __u16 ts_pid_pmt;
+ __u16 ts_pid_audio;
+ __u16 ts_pid_video;
+ __u16 ts_pid_pcr;
+
+ /* audio */
+ enum v4l2_mpeg_audio_encoding au_encoding;
+ enum v4l2_mpeg_audio_l2_bitrate au_l2_bitrate;
+ enum v4l2_mpeg_audio_ac3_bitrate au_ac3_bitrate;
+
+ /* video */
+ enum v4l2_mpeg_video_aspect vi_aspect;
+ enum v4l2_mpeg_video_bitrate_mode vi_bitrate_mode;
+ __u32 vi_bitrate;
+ __u32 vi_bitrate_peak;
+};
+
+static const struct v4l2_format v4l2_format_table[] =
+{
+ [SAA6752HS_VF_D1] =
+ { .fmt = { .pix = { .width = 720, .height = 576 }}},
+ [SAA6752HS_VF_2_3_D1] =
+ { .fmt = { .pix = { .width = 480, .height = 576 }}},
+ [SAA6752HS_VF_1_2_D1] =
+ { .fmt = { .pix = { .width = 352, .height = 576 }}},
+ [SAA6752HS_VF_SIF] =
+ { .fmt = { .pix = { .width = 352, .height = 288 }}},
+ [SAA6752HS_VF_UNKNOWN] =
+ { .fmt = { .pix = { .width = 0, .height = 0}}},
+};
+
+struct saa6752hs_state {
+ struct v4l2_subdev sd;
+ int chip;
+ u32 revision;
+ int has_ac3;
+ struct saa6752hs_mpeg_params params;
+ enum saa6752hs_videoformat video_format;
+ v4l2_std_id standard;
+};
+
+enum saa6752hs_command {
+ SAA6752HS_COMMAND_RESET = 0,
+ SAA6752HS_COMMAND_STOP = 1,
+ SAA6752HS_COMMAND_START = 2,
+ SAA6752HS_COMMAND_PAUSE = 3,
+ SAA6752HS_COMMAND_RECONFIGURE = 4,
+ SAA6752HS_COMMAND_SLEEP = 5,
+ SAA6752HS_COMMAND_RECONFIGURE_FORCE = 6,
+
+ SAA6752HS_COMMAND_MAX
+};
+
+static inline struct saa6752hs_state *to_state(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct saa6752hs_state, sd);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static u8 PAT[] = {
+ 0xc2, /* i2c register */
+ 0x00, /* table number for encoder */
+
+ 0x47, /* sync */
+ 0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0) */
+ 0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
+
+ 0x00, /* PSI pointer to start of table */
+
+ 0x00, /* tid(0) */
+ 0xb0, 0x0d, /* section_syntax_indicator(1), section_length(13) */
+
+ 0x00, 0x01, /* transport_stream_id(1) */
+
+ 0xc1, /* version_number(0), current_next_indicator(1) */
+
+ 0x00, 0x00, /* section_number(0), last_section_number(0) */
+
+ 0x00, 0x01, /* program_number(1) */
+
+ 0xe0, 0x00, /* PMT PID */
+
+ 0x00, 0x00, 0x00, 0x00 /* CRC32 */
+};
+
+static u8 PMT[] = {
+ 0xc2, /* i2c register */
+ 0x01, /* table number for encoder */
+
+ 0x47, /* sync */
+ 0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid */
+ 0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
+
+ 0x00, /* PSI pointer to start of table */
+
+ 0x02, /* tid(2) */
+ 0xb0, 0x17, /* section_syntax_indicator(1), section_length(23) */
+
+ 0x00, 0x01, /* program_number(1) */
+
+ 0xc1, /* version_number(0), current_next_indicator(1) */
+
+ 0x00, 0x00, /* section_number(0), last_section_number(0) */
+
+ 0xe0, 0x00, /* PCR_PID */
+
+ 0xf0, 0x00, /* program_info_length(0) */
+
+ 0x02, 0xe0, 0x00, 0xf0, 0x00, /* video stream type(2), pid */
+ 0x04, 0xe0, 0x00, 0xf0, 0x00, /* audio stream type(4), pid */
+
+ 0x00, 0x00, 0x00, 0x00 /* CRC32 */
+};
+
+static u8 PMT_AC3[] = {
+ 0xc2, /* i2c register */
+ 0x01, /* table number for encoder(1) */
+ 0x47, /* sync */
+
+ 0x40, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0) */
+ 0x10, /* PMT PID (0x0010) */
+ 0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
+
+ 0x00, /* PSI pointer to start of table */
+
+ 0x02, /* TID (2) */
+ 0xb0, 0x1a, /* section_syntax_indicator(1), section_length(26) */
+
+ 0x00, 0x01, /* program_number(1) */
+
+ 0xc1, /* version_number(0), current_next_indicator(1) */
+
+ 0x00, 0x00, /* section_number(0), last_section_number(0) */
+
+ 0xe1, 0x04, /* PCR_PID (0x0104) */
+
+ 0xf0, 0x00, /* program_info_length(0) */
+
+ 0x02, 0xe1, 0x00, 0xf0, 0x00, /* video stream type(2), pid */
+ 0x06, 0xe1, 0x03, 0xf0, 0x03, /* audio stream type(6), pid */
+ 0x6a, /* AC3 */
+ 0x01, /* Descriptor_length(1) */
+ 0x00, /* component_type_flag(0), bsid_flag(0), mainid_flag(0), asvc_flag(0), reserved flags(0) */
+
+ 0xED, 0xDE, 0x2D, 0xF3 /* CRC32 BE */
+};
+
+static struct saa6752hs_mpeg_params param_defaults =
+{
+ .ts_pid_pmt = 16,
+ .ts_pid_video = 260,
+ .ts_pid_audio = 256,
+ .ts_pid_pcr = 259,
+
+ .vi_aspect = V4L2_MPEG_VIDEO_ASPECT_4x3,
+ .vi_bitrate = 4000,
+ .vi_bitrate_peak = 6000,
+ .vi_bitrate_mode = V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
+
+ .au_encoding = V4L2_MPEG_AUDIO_ENCODING_LAYER_2,
+ .au_l2_bitrate = V4L2_MPEG_AUDIO_L2_BITRATE_256K,
+ .au_ac3_bitrate = V4L2_MPEG_AUDIO_AC3_BITRATE_256K,
+};
+
+/* ---------------------------------------------------------------------- */
+
+static int saa6752hs_chip_command(struct i2c_client *client,
+ enum saa6752hs_command command)
+{
+ unsigned char buf[3];
+ unsigned long timeout;
+ int status = 0;
+
+ /* execute the command */
+ switch(command) {
+ case SAA6752HS_COMMAND_RESET:
+ buf[0] = 0x00;
+ break;
+
+ case SAA6752HS_COMMAND_STOP:
+ buf[0] = 0x03;
+ break;
+
+ case SAA6752HS_COMMAND_START:
+ buf[0] = 0x02;
+ break;
+
+ case SAA6752HS_COMMAND_PAUSE:
+ buf[0] = 0x04;
+ break;
+
+ case SAA6752HS_COMMAND_RECONFIGURE:
+ buf[0] = 0x05;
+ break;
+
+ case SAA6752HS_COMMAND_SLEEP:
+ buf[0] = 0x06;
+ break;
+
+ case SAA6752HS_COMMAND_RECONFIGURE_FORCE:
+ buf[0] = 0x07;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ /* set it and wait for it to be so */
+ i2c_master_send(client, buf, 1);
+ timeout = jiffies + HZ * 3;
+ for (;;) {
+ /* get the current status */
+ buf[0] = 0x10;
+ i2c_master_send(client, buf, 1);
+ i2c_master_recv(client, buf, 1);
+
+ if (!(buf[0] & 0x20))
+ break;
+ if (time_after(jiffies,timeout)) {
+ status = -ETIMEDOUT;
+ break;
+ }
+
+ msleep(10);
+ }
+
+ /* delay a bit to let encoder settle */
+ msleep(50);
+
+ return status;
+}
+
+
+static inline void set_reg8(struct i2c_client *client, uint8_t reg, uint8_t val)
+{
+ u8 buf[2];
+
+ buf[0] = reg;
+ buf[1] = val;
+ i2c_master_send(client, buf, 2);
+}
+
+static inline void set_reg16(struct i2c_client *client, uint8_t reg, uint16_t val)
+{
+ u8 buf[3];
+
+ buf[0] = reg;
+ buf[1] = val >> 8;
+ buf[2] = val & 0xff;
+ i2c_master_send(client, buf, 3);
+}
+
+static int saa6752hs_set_bitrate(struct i2c_client *client,
+ struct saa6752hs_state *h)
+{
+ struct saa6752hs_mpeg_params *params = &h->params;
+ int tot_bitrate;
+ int is_384k;
+
+ /* set the bitrate mode */
+ set_reg8(client, 0x71,
+ params->vi_bitrate_mode != V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
+
+ /* set the video bitrate */
+ if (params->vi_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) {
+ /* set the target bitrate */
+ set_reg16(client, 0x80, params->vi_bitrate);
+
+ /* set the max bitrate */
+ set_reg16(client, 0x81, params->vi_bitrate_peak);
+ tot_bitrate = params->vi_bitrate_peak;
+ } else {
+ /* set the target bitrate (no max bitrate for CBR) */
+ set_reg16(client, 0x81, params->vi_bitrate);
+ tot_bitrate = params->vi_bitrate;
+ }
+
+ /* set the audio encoding */
+ set_reg8(client, 0x93,
+ params->au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3);
+
+ /* set the audio bitrate */
+ if (params->au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3)
+ is_384k = V4L2_MPEG_AUDIO_AC3_BITRATE_384K == params->au_ac3_bitrate;
+ else
+ is_384k = V4L2_MPEG_AUDIO_L2_BITRATE_384K == params->au_l2_bitrate;
+ set_reg8(client, 0x94, is_384k);
+ tot_bitrate += is_384k ? 384 : 256;
+
+ /* Note: the total max bitrate is determined by adding the video and audio
+ bitrates together and also adding an extra 768kbit/s to stay on the
+ safe side. If more control should be required, then an extra MPEG control
+ should be added. */
+ tot_bitrate += 768;
+ if (tot_bitrate > MPEG_TOTAL_TARGET_BITRATE_MAX)
+ tot_bitrate = MPEG_TOTAL_TARGET_BITRATE_MAX;
+
+ /* set the total bitrate */
+ set_reg16(client, 0xb1, tot_bitrate);
+ return 0;
+}
+
+
+static int get_ctrl(int has_ac3, struct saa6752hs_mpeg_params *params,
+ struct v4l2_ext_control *ctrl)
+{
+ switch (ctrl->id) {
+ case V4L2_CID_MPEG_STREAM_TYPE:
+ ctrl->value = V4L2_MPEG_STREAM_TYPE_MPEG2_TS;
+ break;
+ case V4L2_CID_MPEG_STREAM_PID_PMT:
+ ctrl->value = params->ts_pid_pmt;
+ break;
+ case V4L2_CID_MPEG_STREAM_PID_AUDIO:
+ ctrl->value = params->ts_pid_audio;
+ break;
+ case V4L2_CID_MPEG_STREAM_PID_VIDEO:
+ ctrl->value = params->ts_pid_video;
+ break;
+ case V4L2_CID_MPEG_STREAM_PID_PCR:
+ ctrl->value = params->ts_pid_pcr;
+ break;
+ case V4L2_CID_MPEG_AUDIO_ENCODING:
+ ctrl->value = params->au_encoding;
+ break;
+ case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
+ ctrl->value = params->au_l2_bitrate;
+ break;
+ case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
+ if (!has_ac3)
+ return -EINVAL;
+ ctrl->value = params->au_ac3_bitrate;
+ break;
+ case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
+ ctrl->value = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000;
+ break;
+ case V4L2_CID_MPEG_VIDEO_ENCODING:
+ ctrl->value = V4L2_MPEG_VIDEO_ENCODING_MPEG_2;
+ break;
+ case V4L2_CID_MPEG_VIDEO_ASPECT:
+ ctrl->value = params->vi_aspect;
+ break;
+ case V4L2_CID_MPEG_VIDEO_BITRATE:
+ ctrl->value = params->vi_bitrate * 1000;
+ break;
+ case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
+ ctrl->value = params->vi_bitrate_peak * 1000;
+ break;
+ case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
+ ctrl->value = params->vi_bitrate_mode;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int handle_ctrl(int has_ac3, struct saa6752hs_mpeg_params *params,
+ struct v4l2_ext_control *ctrl, int set)
+{
+ int old = 0, new;
+
+ new = ctrl->value;
+ switch (ctrl->id) {
+ case V4L2_CID_MPEG_STREAM_TYPE:
+ old = V4L2_MPEG_STREAM_TYPE_MPEG2_TS;
+ if (set && new != old)
+ return -ERANGE;
+ new = old;
+ break;
+ case V4L2_CID_MPEG_STREAM_PID_PMT:
+ old = params->ts_pid_pmt;
+ if (set && new > MPEG_PID_MAX)
+ return -ERANGE;
+ if (new > MPEG_PID_MAX)
+ new = MPEG_PID_MAX;
+ params->ts_pid_pmt = new;
+ break;
+ case V4L2_CID_MPEG_STREAM_PID_AUDIO:
+ old = params->ts_pid_audio;
+ if (set && new > MPEG_PID_MAX)
+ return -ERANGE;
+ if (new > MPEG_PID_MAX)
+ new = MPEG_PID_MAX;
+ params->ts_pid_audio = new;
+ break;
+ case V4L2_CID_MPEG_STREAM_PID_VIDEO:
+ old = params->ts_pid_video;
+ if (set && new > MPEG_PID_MAX)
+ return -ERANGE;
+ if (new > MPEG_PID_MAX)
+ new = MPEG_PID_MAX;
+ params->ts_pid_video = new;
+ break;
+ case V4L2_CID_MPEG_STREAM_PID_PCR:
+ old = params->ts_pid_pcr;
+ if (set && new > MPEG_PID_MAX)
+ return -ERANGE;
+ if (new > MPEG_PID_MAX)
+ new = MPEG_PID_MAX;
+ params->ts_pid_pcr = new;
+ break;
+ case V4L2_CID_MPEG_AUDIO_ENCODING:
+ old = params->au_encoding;
+ if (set && new != V4L2_MPEG_AUDIO_ENCODING_LAYER_2 &&
+ (!has_ac3 || new != V4L2_MPEG_AUDIO_ENCODING_AC3))
+ return -ERANGE;
+ params->au_encoding = new;
+ break;
+ case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
+ old = params->au_l2_bitrate;
+ if (set && new != V4L2_MPEG_AUDIO_L2_BITRATE_256K &&
+ new != V4L2_MPEG_AUDIO_L2_BITRATE_384K)
+ return -ERANGE;
+ if (new <= V4L2_MPEG_AUDIO_L2_BITRATE_256K)
+ new = V4L2_MPEG_AUDIO_L2_BITRATE_256K;
+ else
+ new = V4L2_MPEG_AUDIO_L2_BITRATE_384K;
+ params->au_l2_bitrate = new;
+ break;
+ case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
+ if (!has_ac3)
+ return -EINVAL;
+ old = params->au_ac3_bitrate;
+ if (set && new != V4L2_MPEG_AUDIO_AC3_BITRATE_256K &&
+ new != V4L2_MPEG_AUDIO_AC3_BITRATE_384K)
+ return -ERANGE;
+ if (new <= V4L2_MPEG_AUDIO_AC3_BITRATE_256K)
+ new = V4L2_MPEG_AUDIO_AC3_BITRATE_256K;
+ else
+ new = V4L2_MPEG_AUDIO_AC3_BITRATE_384K;
+ params->au_ac3_bitrate = new;
+ break;
+ case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
+ old = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000;
+ if (set && new != old)
+ return -ERANGE;
+ new = old;
+ break;
+ case V4L2_CID_MPEG_VIDEO_ENCODING:
+ old = V4L2_MPEG_VIDEO_ENCODING_MPEG_2;
+ if (set && new != old)
+ return -ERANGE;
+ new = old;
+ break;
+ case V4L2_CID_MPEG_VIDEO_ASPECT:
+ old = params->vi_aspect;
+ if (set && new != V4L2_MPEG_VIDEO_ASPECT_16x9 &&
+ new != V4L2_MPEG_VIDEO_ASPECT_4x3)
+ return -ERANGE;
+ if (new != V4L2_MPEG_VIDEO_ASPECT_16x9)
+ new = V4L2_MPEG_VIDEO_ASPECT_4x3;
+ params->vi_aspect = new;
+ break;
+ case V4L2_CID_MPEG_VIDEO_BITRATE:
+ old = params->vi_bitrate * 1000;
+ new = 1000 * (new / 1000);
+ if (set && new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
+ return -ERANGE;
+ if (new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
+ new = MPEG_VIDEO_TARGET_BITRATE_MAX * 1000;
+ params->vi_bitrate = new / 1000;
+ break;
+ case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
+ old = params->vi_bitrate_peak * 1000;
+ new = 1000 * (new / 1000);
+ if (set && new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
+ return -ERANGE;
+ if (new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
+ new = MPEG_VIDEO_TARGET_BITRATE_MAX * 1000;
+ params->vi_bitrate_peak = new / 1000;
+ break;
+ case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
+ old = params->vi_bitrate_mode;
+ params->vi_bitrate_mode = new;
+ break;
+ default:
+ return -EINVAL;
+ }
+ ctrl->value = new;
+ return 0;
+}
+
+
+static int saa6752hs_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qctrl)
+{
+ struct saa6752hs_state *h = to_state(sd);
+ struct saa6752hs_mpeg_params *params = &h->params;
+ int err;
+
+ switch (qctrl->id) {
+ case V4L2_CID_MPEG_AUDIO_ENCODING:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_AUDIO_ENCODING_LAYER_2,
+ h->has_ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 :
+ V4L2_MPEG_AUDIO_ENCODING_LAYER_2,
+ 1, V4L2_MPEG_AUDIO_ENCODING_LAYER_2);
+
+ case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_AUDIO_L2_BITRATE_256K,
+ V4L2_MPEG_AUDIO_L2_BITRATE_384K, 1,
+ V4L2_MPEG_AUDIO_L2_BITRATE_256K);
+
+ case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
+ if (!h->has_ac3)
+ return -EINVAL;
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_AUDIO_AC3_BITRATE_256K,
+ V4L2_MPEG_AUDIO_AC3_BITRATE_384K, 1,
+ V4L2_MPEG_AUDIO_AC3_BITRATE_256K);
+
+ case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000,
+ V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000, 1,
+ V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000);
+
+ case V4L2_CID_MPEG_VIDEO_ENCODING:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_VIDEO_ENCODING_MPEG_2,
+ V4L2_MPEG_VIDEO_ENCODING_MPEG_2, 1,
+ V4L2_MPEG_VIDEO_ENCODING_MPEG_2);
+
+ case V4L2_CID_MPEG_VIDEO_ASPECT:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_VIDEO_ASPECT_4x3,
+ V4L2_MPEG_VIDEO_ASPECT_16x9, 1,
+ V4L2_MPEG_VIDEO_ASPECT_4x3);
+
+ case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
+ err = v4l2_ctrl_query_fill(qctrl, 0, 27000000, 1, 8000000);
+ if (err == 0 &&
+ params->vi_bitrate_mode ==
+ V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
+ qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
+ return err;
+
+ case V4L2_CID_MPEG_STREAM_TYPE:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_STREAM_TYPE_MPEG2_TS,
+ V4L2_MPEG_STREAM_TYPE_MPEG2_TS, 1,
+ V4L2_MPEG_STREAM_TYPE_MPEG2_TS);
+
+ case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
+ V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 1,
+ V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
+ case V4L2_CID_MPEG_VIDEO_BITRATE:
+ return v4l2_ctrl_query_fill(qctrl, 0, 27000000, 1, 6000000);
+ case V4L2_CID_MPEG_STREAM_PID_PMT:
+ return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 16);
+ case V4L2_CID_MPEG_STREAM_PID_AUDIO:
+ return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 260);
+ case V4L2_CID_MPEG_STREAM_PID_VIDEO:
+ return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 256);
+ case V4L2_CID_MPEG_STREAM_PID_PCR:
+ return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 259);
+
+ default:
+ break;
+ }
+ return -EINVAL;
+}
+
+static int saa6752hs_querymenu(struct v4l2_subdev *sd, struct v4l2_querymenu *qmenu)
+{
+ static const u32 mpeg_audio_encoding[] = {
+ V4L2_MPEG_AUDIO_ENCODING_LAYER_2,
+ V4L2_CTRL_MENU_IDS_END
+ };
+ static const u32 mpeg_audio_ac3_encoding[] = {
+ V4L2_MPEG_AUDIO_ENCODING_LAYER_2,
+ V4L2_MPEG_AUDIO_ENCODING_AC3,
+ V4L2_CTRL_MENU_IDS_END
+ };
+ static u32 mpeg_audio_l2_bitrate[] = {
+ V4L2_MPEG_AUDIO_L2_BITRATE_256K,
+ V4L2_MPEG_AUDIO_L2_BITRATE_384K,
+ V4L2_CTRL_MENU_IDS_END
+ };
+ static u32 mpeg_audio_ac3_bitrate[] = {
+ V4L2_MPEG_AUDIO_AC3_BITRATE_256K,
+ V4L2_MPEG_AUDIO_AC3_BITRATE_384K,
+ V4L2_CTRL_MENU_IDS_END
+ };
+ struct saa6752hs_state *h = to_state(sd);
+ struct v4l2_queryctrl qctrl;
+ int err;
+
+ qctrl.id = qmenu->id;
+ err = saa6752hs_queryctrl(sd, &qctrl);
+ if (err)
+ return err;
+ switch (qmenu->id) {
+ case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
+ return v4l2_ctrl_query_menu_valid_items(qmenu,
+ mpeg_audio_l2_bitrate);
+ case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
+ if (!h->has_ac3)
+ return -EINVAL;
+ return v4l2_ctrl_query_menu_valid_items(qmenu,
+ mpeg_audio_ac3_bitrate);
+ case V4L2_CID_MPEG_AUDIO_ENCODING:
+ return v4l2_ctrl_query_menu_valid_items(qmenu,
+ h->has_ac3 ? mpeg_audio_ac3_encoding :
+ mpeg_audio_encoding);
+ }
+ return v4l2_ctrl_query_menu(qmenu, &qctrl, NULL);
+}
+
+static int saa6752hs_init(struct v4l2_subdev *sd, u32 leading_null_bytes)
+{
+ unsigned char buf[9], buf2[4];
+ struct saa6752hs_state *h = to_state(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ unsigned size;
+ u32 crc;
+ unsigned char localPAT[256];
+ unsigned char localPMT[256];
+
+ /* Set video format - must be done first as it resets other settings */
+ set_reg8(client, 0x41, h->video_format);
+
+ /* Set number of lines in input signal */
+ set_reg8(client, 0x40, (h->standard & V4L2_STD_525_60) ? 1 : 0);
+
+ /* set bitrate */
+ saa6752hs_set_bitrate(client, h);
+
+ /* Set GOP structure {3, 13} */
+ set_reg16(client, 0x72, 0x030d);
+
+ /* Set minimum Q-scale {4} */
+ set_reg8(client, 0x82, 0x04);
+
+ /* Set maximum Q-scale {12} */
+ set_reg8(client, 0x83, 0x0c);
+
+ /* Set Output Protocol */
+ set_reg8(client, 0xd0, 0x81);
+
+ /* Set video output stream format {TS} */
+ set_reg8(client, 0xb0, 0x05);
+
+ /* Set leading null byte for TS */
+ set_reg16(client, 0xf6, leading_null_bytes);
+
+ /* compute PAT */
+ memcpy(localPAT, PAT, sizeof(PAT));
+ localPAT[17] = 0xe0 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
+ localPAT[18] = h->params.ts_pid_pmt & 0xff;
+ crc = crc32_be(~0, &localPAT[7], sizeof(PAT) - 7 - 4);
+ localPAT[sizeof(PAT) - 4] = (crc >> 24) & 0xFF;
+ localPAT[sizeof(PAT) - 3] = (crc >> 16) & 0xFF;
+ localPAT[sizeof(PAT) - 2] = (crc >> 8) & 0xFF;
+ localPAT[sizeof(PAT) - 1] = crc & 0xFF;
+
+ /* compute PMT */
+ if (h->params.au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3) {
+ size = sizeof(PMT_AC3);
+ memcpy(localPMT, PMT_AC3, size);
+ } else {
+ size = sizeof(PMT);
+ memcpy(localPMT, PMT, size);
+ }
+ localPMT[3] = 0x40 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
+ localPMT[4] = h->params.ts_pid_pmt & 0xff;
+ localPMT[15] = 0xE0 | ((h->params.ts_pid_pcr >> 8) & 0x0F);
+ localPMT[16] = h->params.ts_pid_pcr & 0xFF;
+ localPMT[20] = 0xE0 | ((h->params.ts_pid_video >> 8) & 0x0F);
+ localPMT[21] = h->params.ts_pid_video & 0xFF;
+ localPMT[25] = 0xE0 | ((h->params.ts_pid_audio >> 8) & 0x0F);
+ localPMT[26] = h->params.ts_pid_audio & 0xFF;
+ crc = crc32_be(~0, &localPMT[7], size - 7 - 4);
+ localPMT[size - 4] = (crc >> 24) & 0xFF;
+ localPMT[size - 3] = (crc >> 16) & 0xFF;
+ localPMT[size - 2] = (crc >> 8) & 0xFF;
+ localPMT[size - 1] = crc & 0xFF;
+
+ /* Set Audio PID */
+ set_reg16(client, 0xc1, h->params.ts_pid_audio);
+
+ /* Set Video PID */
+ set_reg16(client, 0xc0, h->params.ts_pid_video);
+
+ /* Set PCR PID */
+ set_reg16(client, 0xc4, h->params.ts_pid_pcr);
+
+ /* Send SI tables */
+ i2c_master_send(client, localPAT, sizeof(PAT));
+ i2c_master_send(client, localPMT, size);
+
+ /* mute then unmute audio. This removes buzzing artefacts */
+ set_reg8(client, 0xa4, 1);
+ set_reg8(client, 0xa4, 0);
+
+ /* start it going */
+ saa6752hs_chip_command(client, SAA6752HS_COMMAND_START);
+
+ /* readout current state */
+ buf[0] = 0xE1;
+ buf[1] = 0xA7;
+ buf[2] = 0xFE;
+ buf[3] = 0x82;
+ buf[4] = 0xB0;
+ i2c_master_send(client, buf, 5);
+ i2c_master_recv(client, buf2, 4);
+
+ /* change aspect ratio */
+ buf[0] = 0xE0;
+ buf[1] = 0xA7;
+ buf[2] = 0xFE;
+ buf[3] = 0x82;
+ buf[4] = 0xB0;
+ buf[5] = buf2[0];
+ switch (h->params.vi_aspect) {
+ case V4L2_MPEG_VIDEO_ASPECT_16x9:
+ buf[6] = buf2[1] | 0x40;
+ break;
+ case V4L2_MPEG_VIDEO_ASPECT_4x3:
+ default:
+ buf[6] = buf2[1] & 0xBF;
+ break;
+ }
+ buf[7] = buf2[2];
+ buf[8] = buf2[3];
+ i2c_master_send(client, buf, 9);
+
+ return 0;
+}
+
+static int saa6752hs_do_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls, int set)
+{
+ struct saa6752hs_state *h = to_state(sd);
+ struct saa6752hs_mpeg_params params;
+ int i;
+
+ if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
+ return -EINVAL;
+
+ params = h->params;
+ for (i = 0; i < ctrls->count; i++) {
+ int err = handle_ctrl(h->has_ac3, &params, ctrls->controls + i, set);
+
+ if (err) {
+ ctrls->error_idx = i;
+ return err;
+ }
+ }
+ if (set)
+ h->params = params;
+ return 0;
+}
+
+static int saa6752hs_s_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls)
+{
+ return saa6752hs_do_ext_ctrls(sd, ctrls, 1);
+}
+
+static int saa6752hs_try_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls)
+{
+ return saa6752hs_do_ext_ctrls(sd, ctrls, 0);
+}
+
+static int saa6752hs_g_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls)
+{
+ struct saa6752hs_state *h = to_state(sd);
+ int i;
+
+ if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
+ return -EINVAL;
+
+ for (i = 0; i < ctrls->count; i++) {
+ int err = get_ctrl(h->has_ac3, &h->params, ctrls->controls + i);
+
+ if (err) {
+ ctrls->error_idx = i;
+ return err;
+ }
+ }
+ return 0;
+}
+
+static int saa6752hs_g_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *f)
+{
+ struct saa6752hs_state *h = to_state(sd);
+
+ if (h->video_format == SAA6752HS_VF_UNKNOWN)
+ h->video_format = SAA6752HS_VF_D1;
+ f->width = v4l2_format_table[h->video_format].fmt.pix.width;
+ f->height = v4l2_format_table[h->video_format].fmt.pix.height;
+ f->code = V4L2_MBUS_FMT_FIXED;
+ f->field = V4L2_FIELD_INTERLACED;
+ f->colorspace = V4L2_COLORSPACE_SMPTE170M;
+ return 0;
+}
+
+static int saa6752hs_s_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *f)
+{
+ struct saa6752hs_state *h = to_state(sd);
+ int dist_352, dist_480, dist_720;
+
+ if (f->code != V4L2_MBUS_FMT_FIXED)
+ return -EINVAL;
+
+ /*
+ FIXME: translate and round width/height into EMPRESS
+ subsample type:
+
+ type | PAL | NTSC
+ ---------------------------
+ SIF | 352x288 | 352x240
+ 1/2 D1 | 352x576 | 352x480
+ 2/3 D1 | 480x576 | 480x480
+ D1 | 720x576 | 720x480
+ */
+
+ dist_352 = abs(f->width - 352);
+ dist_480 = abs(f->width - 480);
+ dist_720 = abs(f->width - 720);
+ if (dist_720 < dist_480) {
+ f->width = 720;
+ f->height = 576;
+ h->video_format = SAA6752HS_VF_D1;
+ } else if (dist_480 < dist_352) {
+ f->width = 480;
+ f->height = 576;
+ h->video_format = SAA6752HS_VF_2_3_D1;
+ } else {
+ f->width = 352;
+ if (abs(f->height - 576) <
+ abs(f->height - 288)) {
+ f->height = 576;
+ h->video_format = SAA6752HS_VF_1_2_D1;
+ } else {
+ f->height = 288;
+ h->video_format = SAA6752HS_VF_SIF;
+ }
+ }
+ f->field = V4L2_FIELD_INTERLACED;
+ f->colorspace = V4L2_COLORSPACE_SMPTE170M;
+ return 0;
+}
+
+static int saa6752hs_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
+{
+ struct saa6752hs_state *h = to_state(sd);
+
+ h->standard = std;
+ return 0;
+}
+
+static int saa6752hs_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct saa6752hs_state *h = to_state(sd);
+
+ return v4l2_chip_ident_i2c_client(client,
+ chip, h->chip, h->revision);
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct v4l2_subdev_core_ops saa6752hs_core_ops = {
+ .g_chip_ident = saa6752hs_g_chip_ident,
+ .init = saa6752hs_init,
+ .queryctrl = saa6752hs_queryctrl,
+ .querymenu = saa6752hs_querymenu,
+ .g_ext_ctrls = saa6752hs_g_ext_ctrls,
+ .s_ext_ctrls = saa6752hs_s_ext_ctrls,
+ .try_ext_ctrls = saa6752hs_try_ext_ctrls,
+ .s_std = saa6752hs_s_std,
+};
+
+static const struct v4l2_subdev_video_ops saa6752hs_video_ops = {
+ .s_mbus_fmt = saa6752hs_s_mbus_fmt,
+ .g_mbus_fmt = saa6752hs_g_mbus_fmt,
+};
+
+static const struct v4l2_subdev_ops saa6752hs_ops = {
+ .core = &saa6752hs_core_ops,
+ .video = &saa6752hs_video_ops,
+};
+
+static int saa6752hs_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct saa6752hs_state *h = kzalloc(sizeof(*h), GFP_KERNEL);
+ struct v4l2_subdev *sd;
+ u8 addr = 0x13;
+ u8 data[12];
+
+ v4l_info(client, "chip found @ 0x%x (%s)\n",
+ client->addr << 1, client->adapter->name);
+ if (h == NULL)
+ return -ENOMEM;
+ sd = &h->sd;
+ v4l2_i2c_subdev_init(sd, client, &saa6752hs_ops);
+
+ i2c_master_send(client, &addr, 1);
+ i2c_master_recv(client, data, sizeof(data));
+ h->chip = V4L2_IDENT_SAA6752HS;
+ h->revision = (data[8] << 8) | data[9];
+ h->has_ac3 = 0;
+ if (h->revision == 0x0206) {
+ h->chip = V4L2_IDENT_SAA6752HS_AC3;
+ h->has_ac3 = 1;
+ v4l_info(client, "support AC-3\n");
+ }
+ h->params = param_defaults;
+ h->standard = 0; /* Assume 625 input lines */
+ return 0;
+}
+
+static int saa6752hs_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+
+ v4l2_device_unregister_subdev(sd);
+ kfree(to_state(sd));
+ return 0;
+}
+
+static const struct i2c_device_id saa6752hs_id[] = {
+ { "saa6752hs", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, saa6752hs_id);
+
+static struct i2c_driver saa6752hs_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "saa6752hs",
+ },
+ .probe = saa6752hs_probe,
+ .remove = saa6752hs_remove,
+ .id_table = saa6752hs_id,
+};
+
+module_i2c_driver(saa6752hs_driver);
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-18 05:27:24 +0000