/* * vpx3220a, vpx3216b & vpx3214c video decoder driver version 0.0.1 * * Copyright (C) 2001 Laurent Pinchart * * 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 #include #include #include #include #include #include #include #include #include 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 { 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) { v4l_dbg(1, debug, client, "%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) { v4l_dbg(1, debug, client, "%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) { v4l_dbg(1, debug, client, "%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) { v4l_dbg(1, debug, client, "%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++; ret = vpx3220_write(client, reg, *data++); if (ret < 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, 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 void vpx3220_dump_i2c(struct i2c_client *client) { int len = sizeof(init_common); const unsigned char *data = init_common; while (len > 1) { v4l_dbg(1, debug, client, "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 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; v4l_dbg(1, debug, client, "DECODER_GET_CAPABILITIES\n"); 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; v4l_dbg(1, debug, client, "DECODER_GET_STATUS\n"); status = vpx3220_fp_read(client, 0x0f3); v4l_dbg(1, debug, client, "status: 0x%04x\n", 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; int temp_input; /* Here we back up the input selection because it gets overwritten when we fill the registers with the choosen video norm */ temp_input = vpx3220_fp_read(client, 0xf2); v4l_dbg(1, debug, client, "DECODER_SET_NORM %d\n", *iarg); switch (*iarg) { case VIDEO_MODE_NTSC: vpx3220_write_fp_block(client, init_ntsc, sizeof(init_ntsc) >> 1); v4l_dbg(1, debug, client, "norm switched to NTSC\n"); break; case VIDEO_MODE_PAL: vpx3220_write_fp_block(client, init_pal, sizeof(init_pal) >> 1); v4l_dbg(1, debug, client, "norm switched to PAL\n"); break; case VIDEO_MODE_SECAM: vpx3220_write_fp_block(client, init_secam, sizeof(init_secam) >> 1); v4l_dbg(1, debug, client, "norm switched to SECAM\n"); 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); v4l_dbg(1, debug, client, "norm switched to AUTO\n"); break; default: return -EINVAL; } decoder->norm = *iarg; /* And here we set the backed up video input again */ vpx3220_fp_write(client, 0xf2, temp_input | 0x0010); udelay(10); 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; v4l_dbg(1, debug, client, "input switched to %s\n", 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; v4l_dbg(1, debug, client, "DECODER_ENABLE_OUTPUT %d\n", *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 management code */ static unsigned short normal_i2c[] = { 0x86 >> 1, 0x8e >> 1, I2C_CLIENT_END }; I2C_CLIENT_INSMOD; static int vpx3220_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct vpx3220 *decoder; 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 = kzalloc(sizeof(struct vpx3220), GFP_KERNEL); if (decoder == NULL) return -ENOMEM; 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); 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) v4l_info(client, "%s found @ 0x%x (%s)\n", name, client->addr << 1, client->adapter->name); else v4l_info(client, "chip (%02x:%04x) found @ 0x%x (%s)\n", ver, pn, client->addr << 1, client->adapter->name); vpx3220_init_client(client); return 0; } static int vpx3220_remove(struct i2c_client *client) { kfree(i2c_get_clientdata(client)); return 0; } static const struct i2c_device_id vpx3220_id[] = { { "vpx3220a", 0 }, { "vpx3216b", 0 }, { "vpx3214c", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, vpx3220_id); static struct v4l2_i2c_driver_data v4l2_i2c_data = { .name = "vpx3220", .driverid = I2C_DRIVERID_VPX3220, .command = vpx3220_command, .probe = vpx3220_probe, .remove = vpx3220_remove, .id_table = vpx3220_id, };