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path: root/drivers/media/i2c/vpx3220.c
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-rw-r--r--drivers/media/i2c/vpx3220.c555
1 files changed, 555 insertions, 0 deletions
diff --git a/drivers/media/i2c/vpx3220.c b/drivers/media/i2c/vpx3220.c
new file mode 100644
index 000000000..b481ec196
--- /dev/null
+++ b/drivers/media/i2c/vpx3220.c
@@ -0,0 +1,555 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * vpx3220a, vpx3216b & vpx3214c video decoder driver version 0.0.1
+ *
+ * Copyright (C) 2001 Laurent Pinchart <lpinchart@freegates.be>
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/types.h>
+#include <linux/slab.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("vpx3220a/vpx3216b/vpx3214c video decoder driver");
+MODULE_AUTHOR("Laurent Pinchart");
+MODULE_LICENSE("GPL");
+
+static int debug;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0-1)");
+
+
+#define VPX_TIMEOUT_COUNT 10
+
+/* ----------------------------------------------------------------------- */
+
+struct vpx3220 {
+ struct v4l2_subdev sd;
+ struct v4l2_ctrl_handler hdl;
+ unsigned char reg[255];
+
+ v4l2_std_id norm;
+ int input;
+ int enable;
+};
+
+static inline struct vpx3220 *to_vpx3220(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct vpx3220, sd);
+}
+
+static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
+{
+ return &container_of(ctrl->handler, struct vpx3220, hdl)->sd;
+}
+
+static char *inputs[] = { "internal", "composite", "svideo" };
+
+/* ----------------------------------------------------------------------- */
+
+static inline int vpx3220_write(struct v4l2_subdev *sd, u8 reg, u8 value)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct vpx3220 *decoder = i2c_get_clientdata(client);
+
+ decoder->reg[reg] = value;
+ return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static inline int vpx3220_read(struct v4l2_subdev *sd, u8 reg)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int vpx3220_fp_status(struct v4l2_subdev *sd)
+{
+ unsigned char status;
+ unsigned int i;
+
+ for (i = 0; i < VPX_TIMEOUT_COUNT; i++) {
+ status = vpx3220_read(sd, 0x29);
+
+ if (!(status & 4))
+ return 0;
+
+ udelay(10);
+
+ if (need_resched())
+ cond_resched();
+ }
+
+ return -1;
+}
+
+static int vpx3220_fp_write(struct v4l2_subdev *sd, u8 fpaddr, u16 data)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ /* Write the 16-bit address to the FPWR register */
+ if (i2c_smbus_write_word_data(client, 0x27, swab16(fpaddr)) == -1) {
+ v4l2_dbg(1, debug, sd, "%s: failed\n", __func__);
+ return -1;
+ }
+
+ if (vpx3220_fp_status(sd) < 0)
+ return -1;
+
+ /* Write the 16-bit data to the FPDAT register */
+ if (i2c_smbus_write_word_data(client, 0x28, swab16(data)) == -1) {
+ v4l2_dbg(1, debug, sd, "%s: failed\n", __func__);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int vpx3220_fp_read(struct v4l2_subdev *sd, u16 fpaddr)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ s16 data;
+
+ /* Write the 16-bit address to the FPRD register */
+ if (i2c_smbus_write_word_data(client, 0x26, swab16(fpaddr)) == -1) {
+ v4l2_dbg(1, debug, sd, "%s: failed\n", __func__);
+ return -1;
+ }
+
+ if (vpx3220_fp_status(sd) < 0)
+ return -1;
+
+ /* Read the 16-bit data from the FPDAT register */
+ data = i2c_smbus_read_word_data(client, 0x28);
+ if (data == -1) {
+ v4l2_dbg(1, debug, sd, "%s: failed\n", __func__);
+ return -1;
+ }
+
+ return swab16(data);
+}
+
+static int vpx3220_write_block(struct v4l2_subdev *sd, const u8 *data, unsigned int len)
+{
+ u8 reg;
+ int ret = -1;
+
+ while (len >= 2) {
+ reg = *data++;
+ ret = vpx3220_write(sd, reg, *data++);
+ if (ret < 0)
+ break;
+ len -= 2;
+ }
+
+ return ret;
+}
+
+static int vpx3220_write_fp_block(struct v4l2_subdev *sd,
+ const u16 *data, unsigned int len)
+{
+ u8 reg;
+ int ret = 0;
+
+ while (len > 1) {
+ reg = *data++;
+ ret |= vpx3220_fp_write(sd, reg, *data++);
+ len -= 2;
+ }
+
+ return ret;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static const unsigned short init_ntsc[] = {
+ 0x1c, 0x00, /* NTSC tint angle */
+ 0x88, 17, /* Window 1 vertical */
+ 0x89, 240, /* Vertical lines in */
+ 0x8a, 240, /* Vertical lines out */
+ 0x8b, 000, /* Horizontal begin */
+ 0x8c, 640, /* Horizontal length */
+ 0x8d, 640, /* Number of pixels */
+ 0x8f, 0xc00, /* Disable window 2 */
+ 0xf0, 0x73, /* 13.5 MHz transport, Forced
+ * mode, latch windows */
+ 0xf2, 0x13, /* NTSC M, composite input */
+ 0xe7, 0x1e1, /* Enable vertical standard
+ * locking @ 240 lines */
+};
+
+static const unsigned short init_pal[] = {
+ 0x88, 23, /* Window 1 vertical begin */
+ 0x89, 288, /* Vertical lines in (16 lines
+ * skipped by the VFE) */
+ 0x8a, 288, /* Vertical lines out (16 lines
+ * skipped by the VFE) */
+ 0x8b, 16, /* Horizontal begin */
+ 0x8c, 768, /* Horizontal length */
+ 0x8d, 784, /* Number of pixels
+ * Must be >= Horizontal begin + Horizontal length */
+ 0x8f, 0xc00, /* Disable window 2 */
+ 0xf0, 0x77, /* 13.5 MHz transport, Forced
+ * mode, latch windows */
+ 0xf2, 0x3d1, /* PAL B,G,H,I, composite input */
+ 0xe7, 0x241, /* PAL/SECAM set to 288 lines */
+};
+
+static const unsigned short init_secam[] = {
+ 0x88, 23, /* Window 1 vertical begin */
+ 0x89, 288, /* Vertical lines in (16 lines
+ * skipped by the VFE) */
+ 0x8a, 288, /* Vertical lines out (16 lines
+ * skipped by the VFE) */
+ 0x8b, 16, /* Horizontal begin */
+ 0x8c, 768, /* Horizontal length */
+ 0x8d, 784, /* Number of pixels
+ * Must be >= Horizontal begin + Horizontal length */
+ 0x8f, 0xc00, /* Disable window 2 */
+ 0xf0, 0x77, /* 13.5 MHz transport, Forced
+ * mode, latch windows */
+ 0xf2, 0x3d5, /* SECAM, composite input */
+ 0xe7, 0x241, /* PAL/SECAM set to 288 lines */
+};
+
+static const unsigned char init_common[] = {
+ 0xf2, 0x00, /* Disable all outputs */
+ 0x33, 0x0d, /* Luma : VIN2, Chroma : CIN
+ * (clamp off) */
+ 0xd8, 0xa8, /* HREF/VREF active high, VREF
+ * pulse = 2, Odd/Even flag */
+ 0x20, 0x03, /* IF compensation 0dB/oct */
+ 0xe0, 0xff, /* Open up all comparators */
+ 0xe1, 0x00,
+ 0xe2, 0x7f,
+ 0xe3, 0x80,
+ 0xe4, 0x7f,
+ 0xe5, 0x80,
+ 0xe6, 0x00, /* Brightness set to 0 */
+ 0xe7, 0xe0, /* Contrast to 1.0, noise shaping
+ * 10 to 8 2-bit error diffusion */
+ 0xe8, 0xf8, /* YUV422, CbCr binary offset,
+ * ... (p.32) */
+ 0xea, 0x18, /* LLC2 connected, output FIFO
+ * reset with VACTintern */
+ 0xf0, 0x8a, /* Half full level to 10, bus
+ * shuffler [7:0, 23:16, 15:8] */
+ 0xf1, 0x18, /* Single clock, sync mode, no
+ * FE delay, no HLEN counter */
+ 0xf8, 0x12, /* Port A, PIXCLK, HF# & FE#
+ * strength to 2 */
+ 0xf9, 0x24, /* Port B, HREF, VREF, PREF &
+ * ALPHA strength to 4 */
+};
+
+static const unsigned short init_fp[] = {
+ 0x59, 0,
+ 0xa0, 2070, /* ACC reference */
+ 0xa3, 0,
+ 0xa4, 0,
+ 0xa8, 30,
+ 0xb2, 768,
+ 0xbe, 27,
+ 0x58, 0,
+ 0x26, 0,
+ 0x4b, 0x298, /* PLL gain */
+};
+
+
+static int vpx3220_init(struct v4l2_subdev *sd, u32 val)
+{
+ struct vpx3220 *decoder = to_vpx3220(sd);
+
+ vpx3220_write_block(sd, init_common, sizeof(init_common));
+ vpx3220_write_fp_block(sd, init_fp, sizeof(init_fp) >> 1);
+ if (decoder->norm & V4L2_STD_NTSC)
+ vpx3220_write_fp_block(sd, init_ntsc, sizeof(init_ntsc) >> 1);
+ else if (decoder->norm & V4L2_STD_PAL)
+ vpx3220_write_fp_block(sd, init_pal, sizeof(init_pal) >> 1);
+ else if (decoder->norm & V4L2_STD_SECAM)
+ vpx3220_write_fp_block(sd, init_secam, sizeof(init_secam) >> 1);
+ else
+ vpx3220_write_fp_block(sd, init_pal, sizeof(init_pal) >> 1);
+ return 0;
+}
+
+static int vpx3220_status(struct v4l2_subdev *sd, u32 *pstatus, v4l2_std_id *pstd)
+{
+ int res = V4L2_IN_ST_NO_SIGNAL, status;
+ v4l2_std_id std = pstd ? *pstd : V4L2_STD_ALL;
+
+ status = vpx3220_fp_read(sd, 0x0f3);
+
+ v4l2_dbg(1, debug, sd, "status: 0x%04x\n", status);
+
+ if (status < 0)
+ return status;
+
+ if ((status & 0x20) == 0) {
+ res = 0;
+
+ switch (status & 0x18) {
+ case 0x00:
+ case 0x10:
+ case 0x14:
+ case 0x18:
+ std &= V4L2_STD_PAL;
+ break;
+
+ case 0x08:
+ std &= V4L2_STD_SECAM;
+ break;
+
+ case 0x04:
+ case 0x0c:
+ case 0x1c:
+ std &= V4L2_STD_NTSC;
+ break;
+ }
+ } else {
+ std = V4L2_STD_UNKNOWN;
+ }
+ if (pstd)
+ *pstd = std;
+ if (pstatus)
+ *pstatus = res;
+ return 0;
+}
+
+static int vpx3220_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
+{
+ v4l2_dbg(1, debug, sd, "querystd\n");
+ return vpx3220_status(sd, NULL, std);
+}
+
+static int vpx3220_g_input_status(struct v4l2_subdev *sd, u32 *status)
+{
+ v4l2_dbg(1, debug, sd, "g_input_status\n");
+ return vpx3220_status(sd, status, NULL);
+}
+
+static int vpx3220_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
+{
+ struct vpx3220 *decoder = to_vpx3220(sd);
+ int temp_input;
+
+ /* Here we back up the input selection because it gets
+ overwritten when we fill the registers with the
+ chosen video norm */
+ temp_input = vpx3220_fp_read(sd, 0xf2);
+
+ v4l2_dbg(1, debug, sd, "s_std %llx\n", (unsigned long long)std);
+ if (std & V4L2_STD_NTSC) {
+ vpx3220_write_fp_block(sd, init_ntsc, sizeof(init_ntsc) >> 1);
+ v4l2_dbg(1, debug, sd, "norm switched to NTSC\n");
+ } else if (std & V4L2_STD_PAL) {
+ vpx3220_write_fp_block(sd, init_pal, sizeof(init_pal) >> 1);
+ v4l2_dbg(1, debug, sd, "norm switched to PAL\n");
+ } else if (std & V4L2_STD_SECAM) {
+ vpx3220_write_fp_block(sd, init_secam, sizeof(init_secam) >> 1);
+ v4l2_dbg(1, debug, sd, "norm switched to SECAM\n");
+ } else {
+ return -EINVAL;
+ }
+
+ decoder->norm = std;
+
+ /* And here we set the backed up video input again */
+ vpx3220_fp_write(sd, 0xf2, temp_input | 0x0010);
+ udelay(10);
+ return 0;
+}
+
+static int vpx3220_s_routing(struct v4l2_subdev *sd,
+ u32 input, u32 output, u32 config)
+{
+ int data;
+
+ /* RJ: input = 0: ST8 (PCTV) input
+ input = 1: COMPOSITE input
+ input = 2: SVHS input */
+
+ static const int input_vals[3][2] = {
+ {0x0c, 0},
+ {0x0d, 0},
+ {0x0e, 1}
+ };
+
+ if (input > 2)
+ return -EINVAL;
+
+ v4l2_dbg(1, debug, sd, "input switched to %s\n", inputs[input]);
+
+ vpx3220_write(sd, 0x33, input_vals[input][0]);
+
+ data = vpx3220_fp_read(sd, 0xf2) & ~(0x0020);
+ if (data < 0)
+ return data;
+ /* 0x0010 is required to latch the setting */
+ vpx3220_fp_write(sd, 0xf2,
+ data | (input_vals[input][1] << 5) | 0x0010);
+
+ udelay(10);
+ return 0;
+}
+
+static int vpx3220_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ v4l2_dbg(1, debug, sd, "s_stream %s\n", enable ? "on" : "off");
+
+ vpx3220_write(sd, 0xf2, (enable ? 0x1b : 0x00));
+ return 0;
+}
+
+static int vpx3220_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct v4l2_subdev *sd = to_sd(ctrl);
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ vpx3220_write(sd, 0xe6, ctrl->val);
+ return 0;
+ case V4L2_CID_CONTRAST:
+ /* Bit 7 and 8 is for noise shaping */
+ vpx3220_write(sd, 0xe7, ctrl->val + 192);
+ return 0;
+ case V4L2_CID_SATURATION:
+ vpx3220_fp_write(sd, 0xa0, ctrl->val);
+ return 0;
+ case V4L2_CID_HUE:
+ vpx3220_fp_write(sd, 0x1c, ctrl->val);
+ return 0;
+ }
+ return -EINVAL;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct v4l2_ctrl_ops vpx3220_ctrl_ops = {
+ .s_ctrl = vpx3220_s_ctrl,
+};
+
+static const struct v4l2_subdev_core_ops vpx3220_core_ops = {
+ .init = vpx3220_init,
+};
+
+static const struct v4l2_subdev_video_ops vpx3220_video_ops = {
+ .s_std = vpx3220_s_std,
+ .s_routing = vpx3220_s_routing,
+ .s_stream = vpx3220_s_stream,
+ .querystd = vpx3220_querystd,
+ .g_input_status = vpx3220_g_input_status,
+};
+
+static const struct v4l2_subdev_ops vpx3220_ops = {
+ .core = &vpx3220_core_ops,
+ .video = &vpx3220_video_ops,
+};
+
+/* -----------------------------------------------------------------------
+ * Client management code
+ */
+
+static int vpx3220_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct vpx3220 *decoder;
+ struct v4l2_subdev *sd;
+ const char *name = NULL;
+ u8 ver;
+ u16 pn;
+
+ /* Check if the adapter supports the needed features */
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
+ return -ENODEV;
+
+ decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
+ if (decoder == NULL)
+ return -ENOMEM;
+ sd = &decoder->sd;
+ v4l2_i2c_subdev_init(sd, client, &vpx3220_ops);
+ decoder->norm = V4L2_STD_PAL;
+ decoder->input = 0;
+ decoder->enable = 1;
+ v4l2_ctrl_handler_init(&decoder->hdl, 4);
+ v4l2_ctrl_new_std(&decoder->hdl, &vpx3220_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, -128, 127, 1, 0);
+ v4l2_ctrl_new_std(&decoder->hdl, &vpx3220_ctrl_ops,
+ V4L2_CID_CONTRAST, 0, 63, 1, 32);
+ v4l2_ctrl_new_std(&decoder->hdl, &vpx3220_ctrl_ops,
+ V4L2_CID_SATURATION, 0, 4095, 1, 2048);
+ v4l2_ctrl_new_std(&decoder->hdl, &vpx3220_ctrl_ops,
+ V4L2_CID_HUE, -512, 511, 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);
+
+ ver = i2c_smbus_read_byte_data(client, 0x00);
+ pn = (i2c_smbus_read_byte_data(client, 0x02) << 8) +
+ i2c_smbus_read_byte_data(client, 0x01);
+ if (ver == 0xec) {
+ switch (pn) {
+ case 0x4680:
+ name = "vpx3220a";
+ break;
+ case 0x4260:
+ name = "vpx3216b";
+ break;
+ case 0x4280:
+ name = "vpx3214c";
+ break;
+ }
+ }
+ if (name)
+ v4l2_info(sd, "%s found @ 0x%x (%s)\n", name,
+ client->addr << 1, client->adapter->name);
+ else
+ v4l2_info(sd, "chip (%02x:%04x) found @ 0x%x (%s)\n",
+ ver, pn, client->addr << 1, client->adapter->name);
+
+ vpx3220_write_block(sd, init_common, sizeof(init_common));
+ vpx3220_write_fp_block(sd, init_fp, sizeof(init_fp) >> 1);
+ /* Default to PAL */
+ vpx3220_write_fp_block(sd, init_pal, sizeof(init_pal) >> 1);
+ return 0;
+}
+
+static void vpx3220_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct vpx3220 *decoder = to_vpx3220(sd);
+
+ v4l2_device_unregister_subdev(sd);
+ v4l2_ctrl_handler_free(&decoder->hdl);
+}
+
+static const struct i2c_device_id vpx3220_id[] = {
+ { "vpx3220a", 0 },
+ { "vpx3216b", 0 },
+ { "vpx3214c", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, vpx3220_id);
+
+static struct i2c_driver vpx3220_driver = {
+ .driver = {
+ .name = "vpx3220",
+ },
+ .probe = vpx3220_probe,
+ .remove = vpx3220_remove,
+ .id_table = vpx3220_id,
+};
+
+module_i2c_driver(vpx3220_driver);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 16:34:28 +0000