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Diffstat (limited to 'drivers/media/i2c/saa7110.c')
-rw-r--r--drivers/media/i2c/saa7110.c457
1 files changed, 457 insertions, 0 deletions
diff --git a/drivers/media/i2c/saa7110.c b/drivers/media/i2c/saa7110.c
new file mode 100644
index 000000000..5067525d8
--- /dev/null
+++ b/drivers/media/i2c/saa7110.c
@@ -0,0 +1,457 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * saa7110 - Philips SAA7110(A) video decoder driver
+ *
+ * Copyright (C) 1998 Pauline Middelink <middelin@polyware.nl>
+ *
+ * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
+ * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
+ * - some corrections for Pinnacle Systems Inc. DC10plus card.
+ *
+ * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
+ * - moved over to linux>=2.4.x i2c protocol (1/1/2003)
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/wait.h>
+#include <linux/uaccess.h>
+#include <linux/i2c.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ctrls.h>
+
+MODULE_DESCRIPTION("Philips SAA7110 video decoder driver");
+MODULE_AUTHOR("Pauline Middelink");
+MODULE_LICENSE("GPL");
+
+
+static int debug;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0-1)");
+
+#define SAA7110_MAX_INPUT 9 /* 6 CVBS, 3 SVHS */
+#define SAA7110_MAX_OUTPUT 1 /* 1 YUV */
+
+#define SAA7110_NR_REG 0x35
+
+struct saa7110 {
+ struct v4l2_subdev sd;
+ struct v4l2_ctrl_handler hdl;
+ u8 reg[SAA7110_NR_REG];
+
+ v4l2_std_id norm;
+ int input;
+ int enable;
+
+ wait_queue_head_t wq;
+};
+
+static inline struct saa7110 *to_saa7110(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct saa7110, sd);
+}
+
+static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
+{
+ return &container_of(ctrl->handler, struct saa7110, hdl)->sd;
+}
+
+/* ----------------------------------------------------------------------- */
+/* I2C support functions */
+/* ----------------------------------------------------------------------- */
+
+static int saa7110_write(struct v4l2_subdev *sd, u8 reg, u8 value)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct saa7110 *decoder = to_saa7110(sd);
+
+ decoder->reg[reg] = value;
+ return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static int saa7110_write_block(struct v4l2_subdev *sd, const u8 *data, unsigned int len)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct saa7110 *decoder = to_saa7110(sd);
+ int ret = -1;
+ u8 reg = *data; /* first register to write to */
+
+ /* Sanity check */
+ if (reg + (len - 1) > SAA7110_NR_REG)
+ return ret;
+
+ /* the saa7110 has an autoincrement function, use it if
+ * the adapter understands raw I2C */
+ if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+ ret = i2c_master_send(client, data, len);
+
+ /* Cache the written data */
+ memcpy(decoder->reg + reg, data + 1, len - 1);
+ } else {
+ for (++data, --len; len; len--) {
+ ret = saa7110_write(sd, reg++, *data++);
+ if (ret < 0)
+ break;
+ }
+ }
+
+ return ret;
+}
+
+static inline int saa7110_read(struct v4l2_subdev *sd)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ return i2c_smbus_read_byte(client);
+}
+
+/* ----------------------------------------------------------------------- */
+/* SAA7110 functions */
+/* ----------------------------------------------------------------------- */
+
+#define FRESP_06H_COMPST 0x03 /*0x13*/
+#define FRESP_06H_SVIDEO 0x83 /*0xC0*/
+
+
+static int saa7110_selmux(struct v4l2_subdev *sd, int chan)
+{
+ static const unsigned char modes[9][8] = {
+ /* mode 0 */
+ {FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03,
+ 0x44, 0x75, 0x16},
+ /* mode 1 */
+ {FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03,
+ 0x44, 0x75, 0x16},
+ /* mode 2 */
+ {FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03,
+ 0x60, 0xB5, 0x05},
+ /* mode 3 */
+ {FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03,
+ 0x60, 0xB5, 0x05},
+ /* mode 4 */
+ {FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83,
+ 0x60, 0xB5, 0x03},
+ /* mode 5 */
+ {FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83,
+ 0x60, 0xB5, 0x03},
+ /* mode 6 */
+ {FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3,
+ 0x44, 0x75, 0x12},
+ /* mode 7 */
+ {FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13,
+ 0x60, 0xB5, 0x14},
+ /* mode 8 */
+ {FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23,
+ 0x44, 0x75, 0x21}
+ };
+ struct saa7110 *decoder = to_saa7110(sd);
+ const unsigned char *ptr = modes[chan];
+
+ saa7110_write(sd, 0x06, ptr[0]); /* Luminance control */
+ saa7110_write(sd, 0x20, ptr[1]); /* Analog Control #1 */
+ saa7110_write(sd, 0x21, ptr[2]); /* Analog Control #2 */
+ saa7110_write(sd, 0x22, ptr[3]); /* Mixer Control #1 */
+ saa7110_write(sd, 0x2C, ptr[4]); /* Mixer Control #2 */
+ saa7110_write(sd, 0x30, ptr[5]); /* ADCs gain control */
+ saa7110_write(sd, 0x31, ptr[6]); /* Mixer Control #3 */
+ saa7110_write(sd, 0x21, ptr[7]); /* Analog Control #2 */
+ decoder->input = chan;
+
+ return 0;
+}
+
+static const unsigned char initseq[1 + SAA7110_NR_REG] = {
+ 0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00,
+ /* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90,
+ /* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA,
+ /* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ /* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F,
+ /* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C,
+ /* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02
+};
+
+static v4l2_std_id determine_norm(struct v4l2_subdev *sd)
+{
+ DEFINE_WAIT(wait);
+ struct saa7110 *decoder = to_saa7110(sd);
+ int status;
+
+ /* mode changed, start automatic detection */
+ saa7110_write_block(sd, initseq, sizeof(initseq));
+ saa7110_selmux(sd, decoder->input);
+ prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
+ schedule_timeout(msecs_to_jiffies(250));
+ finish_wait(&decoder->wq, &wait);
+ status = saa7110_read(sd);
+ if (status & 0x40) {
+ v4l2_dbg(1, debug, sd, "status=0x%02x (no signal)\n", status);
+ return V4L2_STD_UNKNOWN;
+ }
+ if ((status & 3) == 0) {
+ saa7110_write(sd, 0x06, 0x83);
+ if (status & 0x20) {
+ v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC/no color)\n", status);
+ /*saa7110_write(sd,0x2E,0x81);*/
+ return V4L2_STD_NTSC;
+ }
+ v4l2_dbg(1, debug, sd, "status=0x%02x (PAL/no color)\n", status);
+ /*saa7110_write(sd,0x2E,0x9A);*/
+ return V4L2_STD_PAL;
+ }
+ /*saa7110_write(sd,0x06,0x03);*/
+ if (status & 0x20) { /* 60Hz */
+ v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC)\n", status);
+ saa7110_write(sd, 0x0D, 0x86);
+ saa7110_write(sd, 0x0F, 0x50);
+ saa7110_write(sd, 0x11, 0x2C);
+ /*saa7110_write(sd,0x2E,0x81);*/
+ return V4L2_STD_NTSC;
+ }
+
+ /* 50Hz -> PAL/SECAM */
+ saa7110_write(sd, 0x0D, 0x86);
+ saa7110_write(sd, 0x0F, 0x10);
+ saa7110_write(sd, 0x11, 0x59);
+ /*saa7110_write(sd,0x2E,0x9A);*/
+
+ prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
+ schedule_timeout(msecs_to_jiffies(250));
+ finish_wait(&decoder->wq, &wait);
+
+ status = saa7110_read(sd);
+ if ((status & 0x03) == 0x01) {
+ v4l2_dbg(1, debug, sd, "status=0x%02x (SECAM)\n", status);
+ saa7110_write(sd, 0x0D, 0x87);
+ return V4L2_STD_SECAM;
+ }
+ v4l2_dbg(1, debug, sd, "status=0x%02x (PAL)\n", status);
+ return V4L2_STD_PAL;
+}
+
+static int saa7110_g_input_status(struct v4l2_subdev *sd, u32 *pstatus)
+{
+ struct saa7110 *decoder = to_saa7110(sd);
+ int res = V4L2_IN_ST_NO_SIGNAL;
+ int status = saa7110_read(sd);
+
+ v4l2_dbg(1, debug, sd, "status=0x%02x norm=%llx\n",
+ status, (unsigned long long)decoder->norm);
+ if (!(status & 0x40))
+ res = 0;
+ if (!(status & 0x03))
+ res |= V4L2_IN_ST_NO_COLOR;
+
+ *pstatus = res;
+ return 0;
+}
+
+static int saa7110_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
+{
+ *std &= determine_norm(sd);
+ return 0;
+}
+
+static int saa7110_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
+{
+ struct saa7110 *decoder = to_saa7110(sd);
+
+ if (decoder->norm != std) {
+ decoder->norm = std;
+ /*saa7110_write(sd, 0x06, 0x03);*/
+ if (std & V4L2_STD_NTSC) {
+ saa7110_write(sd, 0x0D, 0x86);
+ saa7110_write(sd, 0x0F, 0x50);
+ saa7110_write(sd, 0x11, 0x2C);
+ /*saa7110_write(sd, 0x2E, 0x81);*/
+ v4l2_dbg(1, debug, sd, "switched to NTSC\n");
+ } else if (std & V4L2_STD_PAL) {
+ saa7110_write(sd, 0x0D, 0x86);
+ saa7110_write(sd, 0x0F, 0x10);
+ saa7110_write(sd, 0x11, 0x59);
+ /*saa7110_write(sd, 0x2E, 0x9A);*/
+ v4l2_dbg(1, debug, sd, "switched to PAL\n");
+ } else if (std & V4L2_STD_SECAM) {
+ saa7110_write(sd, 0x0D, 0x87);
+ saa7110_write(sd, 0x0F, 0x10);
+ saa7110_write(sd, 0x11, 0x59);
+ /*saa7110_write(sd, 0x2E, 0x9A);*/
+ v4l2_dbg(1, debug, sd, "switched to SECAM\n");
+ } else {
+ return -EINVAL;
+ }
+ }
+ return 0;
+}
+
+static int saa7110_s_routing(struct v4l2_subdev *sd,
+ u32 input, u32 output, u32 config)
+{
+ struct saa7110 *decoder = to_saa7110(sd);
+
+ if (input >= SAA7110_MAX_INPUT) {
+ v4l2_dbg(1, debug, sd, "input=%d not available\n", input);
+ return -EINVAL;
+ }
+ if (decoder->input != input) {
+ saa7110_selmux(sd, input);
+ v4l2_dbg(1, debug, sd, "switched to input=%d\n", input);
+ }
+ return 0;
+}
+
+static int saa7110_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct saa7110 *decoder = to_saa7110(sd);
+
+ if (decoder->enable != enable) {
+ decoder->enable = enable;
+ saa7110_write(sd, 0x0E, enable ? 0x18 : 0x80);
+ v4l2_dbg(1, debug, sd, "YUV %s\n", enable ? "on" : "off");
+ }
+ return 0;
+}
+
+static int saa7110_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct v4l2_subdev *sd = to_sd(ctrl);
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ saa7110_write(sd, 0x19, ctrl->val);
+ break;
+ case V4L2_CID_CONTRAST:
+ saa7110_write(sd, 0x13, ctrl->val);
+ break;
+ case V4L2_CID_SATURATION:
+ saa7110_write(sd, 0x12, ctrl->val);
+ break;
+ case V4L2_CID_HUE:
+ saa7110_write(sd, 0x07, ctrl->val);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct v4l2_ctrl_ops saa7110_ctrl_ops = {
+ .s_ctrl = saa7110_s_ctrl,
+};
+
+static const struct v4l2_subdev_video_ops saa7110_video_ops = {
+ .s_std = saa7110_s_std,
+ .s_routing = saa7110_s_routing,
+ .s_stream = saa7110_s_stream,
+ .querystd = saa7110_querystd,
+ .g_input_status = saa7110_g_input_status,
+};
+
+static const struct v4l2_subdev_ops saa7110_ops = {
+ .video = &saa7110_video_ops,
+};
+
+/* ----------------------------------------------------------------------- */
+
+static int saa7110_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct saa7110 *decoder;
+ struct v4l2_subdev *sd;
+ int rv;
+
+ /* Check if the adapter supports the needed features */
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
+ return -ENODEV;
+
+ v4l_info(client, "chip found @ 0x%x (%s)\n",
+ client->addr << 1, client->adapter->name);
+
+ decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
+ if (!decoder)
+ return -ENOMEM;
+ sd = &decoder->sd;
+ v4l2_i2c_subdev_init(sd, client, &saa7110_ops);
+ decoder->norm = V4L2_STD_PAL;
+ decoder->input = 0;
+ decoder->enable = 1;
+ v4l2_ctrl_handler_init(&decoder->hdl, 2);
+ v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
+ v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
+ V4L2_CID_CONTRAST, 0, 127, 1, 64);
+ v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
+ V4L2_CID_SATURATION, 0, 127, 1, 64);
+ v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
+ V4L2_CID_HUE, -128, 127, 1, 0);
+ sd->ctrl_handler = &decoder->hdl;
+ if (decoder->hdl.error) {
+ int err = decoder->hdl.error;
+
+ v4l2_ctrl_handler_free(&decoder->hdl);
+ return err;
+ }
+ v4l2_ctrl_handler_setup(&decoder->hdl);
+
+ init_waitqueue_head(&decoder->wq);
+
+ rv = saa7110_write_block(sd, initseq, sizeof(initseq));
+ if (rv < 0) {
+ v4l2_dbg(1, debug, sd, "init status %d\n", rv);
+ } else {
+ int ver, status;
+ saa7110_write(sd, 0x21, 0x10);
+ saa7110_write(sd, 0x0e, 0x18);
+ saa7110_write(sd, 0x0D, 0x04);
+ ver = saa7110_read(sd);
+ saa7110_write(sd, 0x0D, 0x06);
+ /*mdelay(150);*/
+ status = saa7110_read(sd);
+ v4l2_dbg(1, debug, sd, "version %x, status=0x%02x\n",
+ ver, status);
+ saa7110_write(sd, 0x0D, 0x86);
+ saa7110_write(sd, 0x0F, 0x10);
+ saa7110_write(sd, 0x11, 0x59);
+ /*saa7110_write(sd, 0x2E, 0x9A);*/
+ }
+
+ /*saa7110_selmux(sd,0);*/
+ /*determine_norm(sd);*/
+ /* setup and implicit mode 0 select has been performed */
+
+ return 0;
+}
+
+static void saa7110_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct saa7110 *decoder = to_saa7110(sd);
+
+ v4l2_device_unregister_subdev(sd);
+ v4l2_ctrl_handler_free(&decoder->hdl);
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct i2c_device_id saa7110_id[] = {
+ { "saa7110", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, saa7110_id);
+
+static struct i2c_driver saa7110_driver = {
+ .driver = {
+ .name = "saa7110",
+ },
+ .probe = saa7110_probe,
+ .remove = saa7110_remove,
+ .id_table = saa7110_id,
+};
+
+module_i2c_driver(saa7110_driver);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 00:19:35 +0000