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path: root/drivers/media/video/vpx3220.c
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Diffstat (limited to 'drivers/media/video/vpx3220.c')
-rw-r--r--drivers/media/video/vpx3220.c754
1 files changed, 754 insertions, 0 deletions
diff --git a/drivers/media/video/vpx3220.c b/drivers/media/video/vpx3220.c
new file mode 100644
index 00000000000..0fd6c9a7091
--- /dev/null
+++ b/drivers/media/video/vpx3220.c
@@ -0,0 +1,754 @@
+/*
+ * vpx3220a, vpx3216b & vpx3214c video decoder driver version 0.0.1
+ *
+ * Copyright (C) 2001 Laurent Pinchart <lpinchart@freegates.be>
+ *
+ * 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.
+ *
+ * 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 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+
+#include <linux/byteorder/swab.h>
+
+#include <asm/io.h>
+#include <asm/uaccess.h>
+
+#include <linux/i2c.h>
+#include <linux/i2c-dev.h>
+
+#define I2C_NAME(x) (x)->name
+
+#include <linux/videodev.h>
+#include <linux/video_decoder.h>
+
+#define I2C_VPX3220 0x86
+#define VPX3220_DEBUG KERN_DEBUG "vpx3220: "
+
+static int debug = 0;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0-1)");
+
+#define dprintk(num, format, args...) \
+ do { \
+ if (debug >= num) \
+ printk(format, ##args); \
+ } while (0)
+
+#define VPX_TIMEOUT_COUNT 10
+
+/* ----------------------------------------------------------------------- */
+
+struct vpx3220 {
+ unsigned char reg[255];
+
+ int norm;
+ int input;
+ int enable;
+ int bright;
+ int contrast;
+ int hue;
+ int sat;
+};
+
+static char *inputs[] = { "internal", "composite", "svideo" };
+
+/* ----------------------------------------------------------------------- */
+static inline int
+vpx3220_write (struct i2c_client *client,
+ u8 reg,
+ u8 value)
+{
+ 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 i2c_client *client,
+ u8 reg)
+{
+ return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int
+vpx3220_fp_status (struct i2c_client *client)
+{
+ unsigned char status;
+ unsigned int i;
+
+ for (i = 0; i < VPX_TIMEOUT_COUNT; i++) {
+ status = vpx3220_read(client, 0x29);
+
+ if (!(status & 4))
+ return 0;
+
+ udelay(10);
+
+ if (need_resched())
+ cond_resched();
+ }
+
+ return -1;
+}
+
+static int
+vpx3220_fp_write (struct i2c_client *client,
+ u8 fpaddr,
+ u16 data)
+{
+ /* Write the 16-bit address to the FPWR register */
+ if (i2c_smbus_write_word_data(client, 0x27, swab16(fpaddr)) == -1) {
+ dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__);
+ return -1;
+ }
+
+ if (vpx3220_fp_status(client) < 0)
+ return -1;
+
+ /* Write the 16-bit data to the FPDAT register */
+ if (i2c_smbus_write_word_data(client, 0x28, swab16(data)) == -1) {
+ dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__);
+ return -1;
+ }
+
+ return 0;
+}
+
+static u16
+vpx3220_fp_read (struct i2c_client *client,
+ u16 fpaddr)
+{
+ s16 data;
+
+ /* Write the 16-bit address to the FPRD register */
+ if (i2c_smbus_write_word_data(client, 0x26, swab16(fpaddr)) == -1) {
+ dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__);
+ return -1;
+ }
+
+ if (vpx3220_fp_status(client) < 0)
+ return -1;
+
+ /* Read the 16-bit data from the FPDAT register */
+ data = i2c_smbus_read_word_data(client, 0x28);
+ if (data == -1) {
+ dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__);
+ return -1;
+ }
+
+ return swab16(data);
+}
+
+static int
+vpx3220_write_block (struct i2c_client *client,
+ const u8 *data,
+ unsigned int len)
+{
+ u8 reg;
+ int ret = -1;
+
+ while (len >= 2) {
+ reg = *data++;
+ if ((ret =
+ vpx3220_write(client, reg, *data++)) < 0)
+ break;
+ len -= 2;
+ }
+
+ return ret;
+}
+
+static int
+vpx3220_write_fp_block (struct i2c_client *client,
+ const u16 *data,
+ unsigned int len)
+{
+ u8 reg;
+ int ret = 0;
+
+ while (len > 1) {
+ reg = *data++;
+ ret |= vpx3220_fp_write(client, 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, 0x173, /* 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 + 16, /* Vertical lines in (16 lines
+ * skipped by the VFE) */
+ 0x8a, 288 + 16, /* 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, 0x177, /* 13.5 MHz transport, Forced
+ * mode, latch windows */
+ 0xf2, 0x3d1, /* PAL B,G,H,I, composite input */
+ 0xe7, 0x261, /* PAL/SECAM set to 288 + 16 lines
+ * change to 0x241 for 288 lines */
+};
+
+static const unsigned short init_secam[] = {
+ 0x88, 23 - 16, /* Window 1 vertical begin */
+ 0x89, 288 + 16, /* Vertical lines in (16 lines
+ * skipped by the VFE) */
+ 0x8a, 288 + 16, /* 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, 0x177, /* 13.5 MHz transport, Forced
+ * mode, latch windows */
+ 0xf2, 0x3d5, /* SECAM, composite input */
+ 0xe7, 0x261, /* PAL/SECAM set to 288 + 16 lines
+ * change to 0x241 for 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 void
+vpx3220_dump_i2c (struct i2c_client *client)
+{
+ int len = sizeof(init_common);
+ const unsigned char *data = init_common;
+
+ while (len > 1) {
+ dprintk(1,
+ KERN_DEBUG "vpx3216b i2c reg 0x%02x data 0x%02x\n",
+ *data, vpx3220_read(client, *data));
+ data += 2;
+ len -= 2;
+ }
+}
+
+static int
+vpx3220_command (struct i2c_client *client,
+ unsigned int cmd,
+ void *arg)
+{
+ struct vpx3220 *decoder = i2c_get_clientdata(client);
+
+ switch (cmd) {
+ case 0:
+ {
+ vpx3220_write_block(client, init_common,
+ sizeof(init_common));
+ vpx3220_write_fp_block(client, init_fp,
+ sizeof(init_fp) >> 1);
+ switch (decoder->norm) {
+
+ case VIDEO_MODE_NTSC:
+ vpx3220_write_fp_block(client, init_ntsc,
+ sizeof(init_ntsc) >> 1);
+ break;
+
+ case VIDEO_MODE_PAL:
+ vpx3220_write_fp_block(client, init_pal,
+ sizeof(init_pal) >> 1);
+ break;
+ case VIDEO_MODE_SECAM:
+ vpx3220_write_fp_block(client, init_secam,
+ sizeof(init_secam) >> 1);
+ break;
+ default:
+ vpx3220_write_fp_block(client, init_pal,
+ sizeof(init_pal) >> 1);
+ break;
+ }
+ }
+ break;
+
+ case DECODER_DUMP:
+ {
+ vpx3220_dump_i2c(client);
+ }
+ break;
+
+ case DECODER_GET_CAPABILITIES:
+ {
+ struct video_decoder_capability *cap = arg;
+
+ dprintk(1, KERN_DEBUG "%s: DECODER_GET_CAPABILITIES\n",
+ I2C_NAME(client));
+
+ cap->flags = VIDEO_DECODER_PAL |
+ VIDEO_DECODER_NTSC |
+ VIDEO_DECODER_SECAM |
+ VIDEO_DECODER_AUTO |
+ VIDEO_DECODER_CCIR;
+ cap->inputs = 3;
+ cap->outputs = 1;
+ }
+ break;
+
+ case DECODER_GET_STATUS:
+ {
+ int res = 0, status;
+
+ dprintk(1, KERN_INFO "%s: DECODER_GET_STATUS\n",
+ I2C_NAME(client));
+
+ status = vpx3220_fp_read(client, 0x0f3);
+
+ dprintk(1, KERN_INFO "%s: status: 0x%04x\n", I2C_NAME(client),
+ status);
+
+ if (status < 0)
+ return status;
+
+ if ((status & 0x20) == 0) {
+ res |= DECODER_STATUS_GOOD | DECODER_STATUS_COLOR;
+
+ switch (status & 0x18) {
+
+ case 0x00:
+ case 0x10:
+ case 0x14:
+ case 0x18:
+ res |= DECODER_STATUS_PAL;
+ break;
+
+ case 0x08:
+ res |= DECODER_STATUS_SECAM;
+ break;
+
+ case 0x04:
+ case 0x0c:
+ case 0x1c:
+ res |= DECODER_STATUS_NTSC;
+ break;
+ }
+ }
+
+ *(int *) arg = res;
+ }
+ break;
+
+ case DECODER_SET_NORM:
+ {
+ int *iarg = arg, data;
+
+ dprintk(1, KERN_DEBUG "%s: DECODER_SET_NORM %d\n",
+ I2C_NAME(client), *iarg);
+ switch (*iarg) {
+
+ case VIDEO_MODE_NTSC:
+ vpx3220_write_fp_block(client, init_ntsc,
+ sizeof(init_ntsc) >> 1);
+ dprintk(1, KERN_INFO "%s: norm switched to NTSC\n",
+ I2C_NAME(client));
+ break;
+
+ case VIDEO_MODE_PAL:
+ vpx3220_write_fp_block(client, init_pal,
+ sizeof(init_pal) >> 1);
+ dprintk(1, KERN_INFO "%s: norm switched to PAL\n",
+ I2C_NAME(client));
+ break;
+
+ case VIDEO_MODE_SECAM:
+ vpx3220_write_fp_block(client, init_secam,
+ sizeof(init_secam) >> 1);
+ dprintk(1, KERN_INFO "%s: norm switched to SECAM\n",
+ I2C_NAME(client));
+ break;
+
+ case VIDEO_MODE_AUTO:
+ /* FIXME This is only preliminary support */
+ data = vpx3220_fp_read(client, 0xf2) & 0x20;
+ vpx3220_fp_write(client, 0xf2, 0x00c0 | data);
+ dprintk(1, KERN_INFO "%s: norm switched to Auto\n",
+ I2C_NAME(client));
+ break;
+
+ default:
+ return -EINVAL;
+
+ }
+ decoder->norm = *iarg;
+ }
+ break;
+
+ case DECODER_SET_INPUT:
+ {
+ int *iarg = arg, data;
+
+ /* RJ: *iarg = 0: ST8 (PCTV) input
+ *iarg = 1: COMPOSITE input
+ *iarg = 2: SVHS input */
+
+ const int input[3][2] = {
+ {0x0c, 0},
+ {0x0d, 0},
+ {0x0e, 1}
+ };
+
+ if (*iarg < 0 || *iarg > 2)
+ return -EINVAL;
+
+ dprintk(1, KERN_INFO "%s: input switched to %s\n",
+ I2C_NAME(client), inputs[*iarg]);
+
+ vpx3220_write(client, 0x33, input[*iarg][0]);
+
+ data = vpx3220_fp_read(client, 0xf2) & ~(0x0020);
+ if (data < 0)
+ return data;
+ /* 0x0010 is required to latch the setting */
+ vpx3220_fp_write(client, 0xf2,
+ data | (input[*iarg][1] << 5) | 0x0010);
+
+ udelay(10);
+ }
+ break;
+
+ case DECODER_SET_OUTPUT:
+ {
+ int *iarg = arg;
+
+ /* not much choice of outputs */
+ if (*iarg != 0) {
+ return -EINVAL;
+ }
+ }
+ break;
+
+ case DECODER_ENABLE_OUTPUT:
+ {
+ int *iarg = arg;
+
+ dprintk(1, KERN_DEBUG "%s: DECODER_ENABLE_OUTPUT %d\n",
+ I2C_NAME(client), *iarg);
+
+ vpx3220_write(client, 0xf2, (*iarg ? 0x1b : 0x00));
+ }
+ break;
+
+ case DECODER_SET_PICTURE:
+ {
+ struct video_picture *pic = arg;
+
+ if (decoder->bright != pic->brightness) {
+ /* We want -128 to 128 we get 0-65535 */
+ decoder->bright = pic->brightness;
+ vpx3220_write(client, 0xe6,
+ (decoder->bright - 32768) >> 8);
+ }
+ if (decoder->contrast != pic->contrast) {
+ /* We want 0 to 64 we get 0-65535 */
+ /* Bit 7 and 8 is for noise shaping */
+ decoder->contrast = pic->contrast;
+ vpx3220_write(client, 0xe7,
+ (decoder->contrast >> 10) + 192);
+ }
+ if (decoder->sat != pic->colour) {
+ /* We want 0 to 4096 we get 0-65535 */
+ decoder->sat = pic->colour;
+ vpx3220_fp_write(client, 0xa0,
+ decoder->sat >> 4);
+ }
+ if (decoder->hue != pic->hue) {
+ /* We want -512 to 512 we get 0-65535 */
+ decoder->hue = pic->hue;
+ vpx3220_fp_write(client, 0x1c,
+ ((decoder->hue - 32768) >> 6) & 0xFFF);
+ }
+ }
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int
+vpx3220_init_client (struct i2c_client *client)
+{
+ vpx3220_write_block(client, init_common, sizeof(init_common));
+ vpx3220_write_fp_block(client, init_fp, sizeof(init_fp) >> 1);
+ /* Default to PAL */
+ vpx3220_write_fp_block(client, init_pal, sizeof(init_pal) >> 1);
+
+ return 0;
+}
+
+/* -----------------------------------------------------------------------
+ * Client managment code
+ */
+
+/*
+ * Generic i2c probe
+ * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
+ */
+static unsigned short normal_i2c[] =
+ { I2C_VPX3220 >> 1, (I2C_VPX3220 >> 1) + 4,
+ I2C_CLIENT_END
+};
+static unsigned short normal_i2c_range[] = { I2C_CLIENT_END };
+
+static unsigned short probe[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short probe_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short ignore[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short ignore_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short force[2] = { I2C_CLIENT_END , I2C_CLIENT_END };
+
+static struct i2c_client_address_data addr_data = {
+ .normal_i2c = normal_i2c,
+ .normal_i2c_range = normal_i2c_range,
+ .probe = probe,
+ .probe_range = probe_range,
+ .ignore = ignore,
+ .ignore_range = ignore_range,
+ .force = force
+};
+
+static struct i2c_driver vpx3220_i2c_driver;
+
+static int
+vpx3220_detach_client (struct i2c_client *client)
+{
+ struct vpx3220 *decoder = i2c_get_clientdata(client);
+ int err;
+
+ err = i2c_detach_client(client);
+ if (err) {
+ return err;
+ }
+
+ kfree(decoder);
+ kfree(client);
+
+ return 0;
+}
+
+static int
+vpx3220_detect_client (struct i2c_adapter *adapter,
+ int address,
+ int kind)
+{
+ int err;
+ struct i2c_client *client;
+ struct vpx3220 *decoder;
+
+ dprintk(1, VPX3220_DEBUG "%s\n", __func__);
+
+ /* Check if the adapter supports the needed features */
+ if (!i2c_check_functionality
+ (adapter, I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
+ return 0;
+
+ client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+ if (client == NULL) {
+ return -ENOMEM;
+ }
+
+ memset(client, 0, sizeof(struct i2c_client));
+
+ client->addr = address;
+ client->adapter = adapter;
+ client->driver = &vpx3220_i2c_driver;
+ client->flags = I2C_CLIENT_ALLOW_USE;
+
+ /* Check for manufacture ID and part number */
+ if (kind < 0) {
+ u8 id;
+ u16 pn;
+
+ id = vpx3220_read(client, 0x00);
+ if (id != 0xec) {
+ dprintk(1,
+ KERN_INFO
+ "vpx3220_attach: Wrong manufacturer ID (0x%02x)\n",
+ id);
+ kfree(client);
+ return 0;
+ }
+
+ pn = (vpx3220_read(client, 0x02) << 8) +
+ vpx3220_read(client, 0x01);
+ switch (pn) {
+ case 0x4680:
+ strlcpy(I2C_NAME(client), "vpx3220a",
+ sizeof(I2C_NAME(client)));
+ break;
+ case 0x4260:
+ strlcpy(I2C_NAME(client), "vpx3216b",
+ sizeof(I2C_NAME(client)));
+ break;
+ case 0x4280:
+ strlcpy(I2C_NAME(client), "vpx3214c",
+ sizeof(I2C_NAME(client)));
+ break;
+ default:
+ dprintk(1,
+ KERN_INFO
+ "%s: Wrong part number (0x%04x)\n",
+ __func__, pn);
+ kfree(client);
+ return 0;
+ }
+ } else {
+ strlcpy(I2C_NAME(client), "forced vpx32xx",
+ sizeof(I2C_NAME(client)));
+ }
+
+ decoder = kmalloc(sizeof(struct vpx3220), GFP_KERNEL);
+ if (decoder == NULL) {
+ kfree(client);
+ return -ENOMEM;
+ }
+ memset(decoder, 0, sizeof(struct vpx3220));
+ decoder->norm = VIDEO_MODE_PAL;
+ decoder->input = 0;
+ decoder->enable = 1;
+ decoder->bright = 32768;
+ decoder->contrast = 32768;
+ decoder->hue = 32768;
+ decoder->sat = 32768;
+ i2c_set_clientdata(client, decoder);
+
+ err = i2c_attach_client(client);
+ if (err) {
+ kfree(client);
+ kfree(decoder);
+ return err;
+ }
+
+ dprintk(1, KERN_INFO "%s: vpx32xx client found at address 0x%02x\n",
+ I2C_NAME(client), client->addr << 1);
+
+ vpx3220_init_client(client);
+
+ return 0;
+}
+
+static int
+vpx3220_attach_adapter (struct i2c_adapter *adapter)
+{
+ int ret;
+
+ ret = i2c_probe(adapter, &addr_data, &vpx3220_detect_client);
+ dprintk(1, VPX3220_DEBUG "%s: i2c_probe returned %d\n",
+ __func__, ret);
+ return ret;
+}
+
+/* -----------------------------------------------------------------------
+ * Driver initialization and cleanup code
+ */
+
+static struct i2c_driver vpx3220_i2c_driver = {
+ .owner = THIS_MODULE,
+ .name = "vpx3220",
+
+ .id = I2C_DRIVERID_VPX3220,
+ .flags = I2C_DF_NOTIFY,
+
+ .attach_adapter = vpx3220_attach_adapter,
+ .detach_client = vpx3220_detach_client,
+ .command = vpx3220_command,
+};
+
+static int __init
+vpx3220_init (void)
+{
+ return i2c_add_driver(&vpx3220_i2c_driver);
+}
+
+static void __exit
+vpx3220_cleanup (void)
+{
+ i2c_del_driver(&vpx3220_i2c_driver);
+}
+
+module_init(vpx3220_init);
+module_exit(vpx3220_cleanup);
+
+MODULE_DESCRIPTION("vpx3220a/vpx3216b/vpx3214c video encoder driver");
+MODULE_AUTHOR("Laurent Pinchart");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-27 07:47:46 +0000