Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 543 insertions, 0 deletions

diff --git a/drivers/media/video/saa7134/saa6752hs.c b/drivers/media/video/saa7134/saa6752hs.c
new file mode 100644
index 0000000..cee1358
--- /dev/null
+++ b/drivers/media/video/saa7134/saa6752hs.c
@@ -0,0 +1,543 @@
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.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/videodev.h>
+#include <linux/init.h>
+#include <linux/crc32.h>
+
+#include <media/id.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)
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = {0x20, I2C_CLIENT_END};
+static unsigned short normal_i2c_range[] = {I2C_CLIENT_END};
+I2C_CLIENT_INSMOD;
+
+MODULE_DESCRIPTION("device driver for saa6752hs MPEG2 encoder");
+MODULE_AUTHOR("Andrew de Quincey");
+MODULE_LICENSE("GPL");
+
+static struct i2c_driver driver;
+static struct i2c_client client_template;
+
+struct saa6752hs_state {
+	struct i2c_client             client;
+	struct v4l2_mpeg_compression  params;
+};
+
+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 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 struct v4l2_mpeg_compression param_defaults =
+{
+	.st_type         = V4L2_MPEG_TS_2,
+	.st_bitrate      = {
+		.mode    = V4L2_BITRATE_CBR,
+		.target  = 7000,
+	},
+
+	.ts_pid_pmt      = 16,
+	.ts_pid_video    = 260,
+	.ts_pid_audio    = 256,
+	.ts_pid_pcr      = 259,
+
+	.vi_type         = V4L2_MPEG_VI_2,
+	.vi_aspect_ratio = V4L2_MPEG_ASPECT_4_3,
+	.vi_bitrate      = {
+		.mode    = V4L2_BITRATE_VBR,
+		.target  = 4000,
+		.max     = 6000,
+	},
+
+	.au_type         = V4L2_MPEG_AU_2_II,
+	.au_bitrate      = {
+		.mode    = V4L2_BITRATE_CBR,
+		.target  = 256,
+	},
+
+#if 0
+	/* FIXME: size? via S_FMT? */
+	.video_format = MPEG_VIDEO_FORMAT_D1,
+#endif
+};
+
+/* ---------------------------------------------------------------------- */
+
+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;
+		}
+
+		// wait a bit
+		msleep(10);
+	}
+
+	// delay a bit to let encoder settle
+	msleep(50);
+
+	// done
+  	return status;
+}
+
+
+static int saa6752hs_set_bitrate(struct i2c_client* client,
+				 struct v4l2_mpeg_compression* params)
+{
+  	u8 buf[3];
+
+	// set the bitrate mode
+	buf[0] = 0x71;
+	buf[1] = (params->vi_bitrate.mode == V4L2_BITRATE_VBR) ? 0 : 1;
+	i2c_master_send(client, buf, 2);
+
+	// set the video bitrate
+	if (params->vi_bitrate.mode == V4L2_BITRATE_VBR) {
+		// set the target bitrate
+		buf[0] = 0x80;
+	    	buf[1] = params->vi_bitrate.target >> 8;
+	  	buf[2] = params->vi_bitrate.target & 0xff;
+		i2c_master_send(client, buf, 3);
+
+		// set the max bitrate
+		buf[0] = 0x81;
+	    	buf[1] = params->vi_bitrate.max >> 8;
+	  	buf[2] = params->vi_bitrate.max & 0xff;
+		i2c_master_send(client, buf, 3);
+	} else {
+		// set the target bitrate (no max bitrate for CBR)
+  		buf[0] = 0x81;
+	    	buf[1] = params->vi_bitrate.target >> 8;
+	  	buf[2] = params->vi_bitrate.target & 0xff;
+		i2c_master_send(client, buf, 3);
+	}
+
+	// set the audio bitrate
+ 	buf[0] = 0x94;
+	buf[1] = (256 == params->au_bitrate.target) ? 0 : 1;
+	i2c_master_send(client, buf, 2);
+
+	// set the total bitrate
+	buf[0] = 0xb1;
+  	buf[1] = params->st_bitrate.target >> 8;
+  	buf[2] = params->st_bitrate.target & 0xff;
+	i2c_master_send(client, buf, 3);
+
+	// return success
+	return 0;
+}
+
+
+static void saa6752hs_set_params(struct i2c_client* client,
+				 struct v4l2_mpeg_compression* params)
+{
+	struct saa6752hs_state *h = i2c_get_clientdata(client);
+
+	/* check PIDs */
+	if (params->ts_pid_pmt <= MPEG_PID_MAX)
+		h->params.ts_pid_pmt = params->ts_pid_pmt;
+	if (params->ts_pid_pcr <= MPEG_PID_MAX)
+		h->params.ts_pid_pcr = params->ts_pid_pcr;
+	if (params->ts_pid_video <= MPEG_PID_MAX)
+		h->params.ts_pid_video = params->ts_pid_video;
+	if (params->ts_pid_audio <= MPEG_PID_MAX)
+		h->params.ts_pid_audio = params->ts_pid_audio;
+
+	/* check bitrate parameters */
+	if ((params->vi_bitrate.mode == V4L2_BITRATE_CBR) ||
+	    (params->vi_bitrate.mode == V4L2_BITRATE_VBR))
+		h->params.vi_bitrate.mode = params->vi_bitrate.mode;
+	if (params->vi_bitrate.mode != V4L2_BITRATE_NONE)
+		h->params.st_bitrate.target = params->st_bitrate.target;
+	if (params->vi_bitrate.mode != V4L2_BITRATE_NONE)
+		h->params.vi_bitrate.target = params->vi_bitrate.target;
+	if (params->vi_bitrate.mode == V4L2_BITRATE_VBR)
+		h->params.vi_bitrate.max = params->vi_bitrate.max;
+	if (params->au_bitrate.mode != V4L2_BITRATE_NONE)
+		h->params.au_bitrate.target = params->au_bitrate.target;
+
+	/* aspect ratio */
+	if (params->vi_aspect_ratio == V4L2_MPEG_ASPECT_4_3 ||
+	    params->vi_aspect_ratio == V4L2_MPEG_ASPECT_16_9)
+		h->params.vi_aspect_ratio = params->vi_aspect_ratio;
+
+	/* range checks */
+	if (h->params.st_bitrate.target > MPEG_TOTAL_TARGET_BITRATE_MAX)
+		h->params.st_bitrate.target = MPEG_TOTAL_TARGET_BITRATE_MAX;
+	if (h->params.vi_bitrate.target > MPEG_VIDEO_TARGET_BITRATE_MAX)
+		h->params.vi_bitrate.target = MPEG_VIDEO_TARGET_BITRATE_MAX;
+	if (h->params.vi_bitrate.max > MPEG_VIDEO_MAX_BITRATE_MAX)
+		h->params.vi_bitrate.max = MPEG_VIDEO_MAX_BITRATE_MAX;
+	if (h->params.au_bitrate.target <= 256)
+		h->params.au_bitrate.target = 256;
+	else
+		h->params.au_bitrate.target = 384;
+}
+
+static int saa6752hs_init(struct i2c_client* client)
+{
+	unsigned char buf[9], buf2[4];
+	struct saa6752hs_state *h;
+	u32 crc;
+	unsigned char localPAT[256];
+	unsigned char localPMT[256];
+
+	h = i2c_get_clientdata(client);
+
+	// Set video format - must be done first as it resets other settings
+	buf[0] = 0x41;
+	buf[1] = 0 /* MPEG_VIDEO_FORMAT_D1 */;
+	i2c_master_send(client, buf, 2);
+
+        // set bitrate
+        saa6752hs_set_bitrate(client, &h->params);
+
+	// Set GOP structure {3, 13}
+	buf[0] = 0x72;
+	buf[1] = 0x03;
+	buf[2] = 0x0D;
+	i2c_master_send(client,buf,3);
+
+    	// Set minimum Q-scale {4}
+	buf[0] = 0x82;
+	buf[1] = 0x04;
+	i2c_master_send(client,buf,2);
+
+    	// Set maximum Q-scale {12}
+	buf[0] = 0x83;
+	buf[1] = 0x0C;
+	i2c_master_send(client,buf,2);
+
+    	// Set Output Protocol
+	buf[0] = 0xD0;
+	buf[1] = 0x81;
+	i2c_master_send(client,buf,2);
+
+    	// Set video output stream format {TS}
+	buf[0] = 0xB0;
+	buf[1] = 0x05;
+	i2c_master_send(client,buf,2);
+
+	/* 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 */
+      	memcpy(localPMT, PMT, sizeof(PMT));
+   	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], sizeof(PMT) - 7 - 4);
+	localPMT[sizeof(PMT) - 4] = (crc >> 24) & 0xFF;
+	localPMT[sizeof(PMT) - 3] = (crc >> 16) & 0xFF;
+	localPMT[sizeof(PMT) - 2] = (crc >> 8) & 0xFF;
+	localPMT[sizeof(PMT) - 1] = crc & 0xFF;
+
+    	// Set Audio PID
+	buf[0] = 0xC1;
+	buf[1] = (h->params.ts_pid_audio >> 8) & 0xFF;
+	buf[2] = h->params.ts_pid_audio & 0xFF;
+	i2c_master_send(client,buf,3);
+
+	// Set Video PID
+	buf[0] = 0xC0;
+	buf[1] = (h->params.ts_pid_video >> 8) & 0xFF;
+	buf[2] = h->params.ts_pid_video & 0xFF;
+	i2c_master_send(client,buf,3);
+
+ 	// Set PCR PID
+	buf[0] = 0xC4;
+	buf[1] = (h->params.ts_pid_pcr >> 8) & 0xFF;
+	buf[2] = h->params.ts_pid_pcr & 0xFF;
+	i2c_master_send(client,buf,3);
+
+	// Send SI tables
+	i2c_master_send(client,localPAT,sizeof(PAT));
+	i2c_master_send(client,localPMT,sizeof(PMT));
+
+	// mute then unmute audio. This removes buzzing artefacts
+	buf[0] = 0xa4;
+	buf[1] = 1;
+	i2c_master_send(client, buf, 2);
+  	buf[1] = 0;
+	i2c_master_send(client, buf, 2);
+
+	// 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_ratio) {
+	case V4L2_MPEG_ASPECT_16_9:
+		buf[6] = buf2[1] | 0x40;
+		break;
+	case V4L2_MPEG_ASPECT_4_3:
+	default:
+		buf[6] = buf2[1] & 0xBF;
+		break;
+		break;
+	}
+	buf[7] = buf2[2];
+	buf[8] = buf2[3];
+	i2c_master_send(client, buf, 9);
+
+   	// return success
+	return 0;
+}
+
+static int saa6752hs_attach(struct i2c_adapter *adap, int addr, int kind)
+{
+	struct saa6752hs_state *h;
+
+        printk("saa6752hs: chip found @ 0x%x\n", addr<<1);
+
+        if (NULL == (h = kmalloc(sizeof(*h), GFP_KERNEL)))
+                return -ENOMEM;
+	memset(h,0,sizeof(*h));
+	h->client = client_template;
+	h->params = param_defaults;
+	h->client.adapter = adap;
+	h->client.addr = addr;
+
+	i2c_set_clientdata(&h->client, h);
+        i2c_attach_client(&h->client);
+	return 0;
+}
+
+static int saa6752hs_probe(struct i2c_adapter *adap)
+{
+	if (adap->class & I2C_CLASS_TV_ANALOG)
+		return i2c_probe(adap, &addr_data, saa6752hs_attach);
+	return 0;
+}
+
+static int saa6752hs_detach(struct i2c_client *client)
+{
+	struct saa6752hs_state *h;
+
+	h = i2c_get_clientdata(client);
+	i2c_detach_client(client);
+	kfree(h);
+	return 0;
+}
+
+static int
+saa6752hs_command(struct i2c_client *client, unsigned int cmd, void *arg)
+{
+	struct saa6752hs_state *h = i2c_get_clientdata(client);
+	struct v4l2_mpeg_compression *params = arg;
+	int err = 0;
+
+        switch (cmd) {
+	case VIDIOC_S_MPEGCOMP:
+		if (NULL == params) {
+			/* apply settings and start encoder */
+			saa6752hs_init(client);
+			break;
+		}
+		saa6752hs_set_params(client, params);
+		/* fall through */
+	case VIDIOC_G_MPEGCOMP:
+		*params = h->params;
+		break;
+	default:
+		/* nothing */
+		break;
+	}
+
+	return err;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static struct i2c_driver driver = {
+	.owner          = THIS_MODULE,
+        .name           = "i2c saa6752hs MPEG encoder",
+        .id             = I2C_DRIVERID_SAA6752HS,
+        .flags          = I2C_DF_NOTIFY,
+        .attach_adapter = saa6752hs_probe,
+        .detach_client  = saa6752hs_detach,
+        .command        = saa6752hs_command,
+};
+
+static struct i2c_client client_template =
+{
+	I2C_DEVNAME("saa6752hs"),
+	.flags      = I2C_CLIENT_ALLOW_USE,
+        .driver     = &driver,
+};
+
+static int __init saa6752hs_init_module(void)
+{
+	return i2c_add_driver(&driver);
+}
+
+static void __exit saa6752hs_cleanup_module(void)
+{
+	i2c_del_driver(&driver);
+}
+
+module_init(saa6752hs_init_module);
+module_exit(saa6752hs_cleanup_module);
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */