From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/media/pci/zoran/zr36016.c | 406 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 406 insertions(+) create mode 100644 drivers/media/pci/zoran/zr36016.c (limited to 'drivers/media/pci/zoran/zr36016.c') diff --git a/drivers/media/pci/zoran/zr36016.c b/drivers/media/pci/zoran/zr36016.c new file mode 100644 index 000000000..4b328ad60 --- /dev/null +++ b/drivers/media/pci/zoran/zr36016.c @@ -0,0 +1,406 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Zoran ZR36016 basic configuration functions + * + * Copyright (C) 2001 Wolfgang Scherr + */ + +#include +#include +#include + +/* headerfile of this module */ +#include "zr36016.h" + +/* codec io API */ +#include "videocodec.h" + +/* + * it doesn't make sense to have more than 20 or so, + * just to prevent some unwanted loops + */ +#define MAX_CODECS 20 + +/* amount of chips attached via this driver */ +static int zr36016_codecs; + +/* + * Local hardware I/O functions: read/write via codec layer + * (registers are located in the master device) + */ + +/* read and write functions */ +static u8 zr36016_read(struct zr36016 *ptr, u16 reg) +{ + u8 value = 0; + struct zoran *zr = videocodec_to_zoran(ptr->codec); + + /* just in case something is wrong... */ + if (ptr->codec->master_data->readreg) + value = (ptr->codec->master_data->readreg(ptr->codec, reg)) & 0xFF; + else + zrdev_err(zr, "%s: invalid I/O setup, nothing read!\n", ptr->name); + + zrdev_dbg(zr, "%s: reading from 0x%04x: %02x\n", ptr->name, reg, value); + + return value; +} + +static void zr36016_write(struct zr36016 *ptr, u16 reg, u8 value) +{ + struct zoran *zr = videocodec_to_zoran(ptr->codec); + + zrdev_dbg(zr, "%s: writing 0x%02x to 0x%04x\n", ptr->name, value, reg); + + // just in case something is wrong... + if (ptr->codec->master_data->writereg) + ptr->codec->master_data->writereg(ptr->codec, reg, value); + else + zrdev_err(zr, "%s: invalid I/O setup, nothing written!\n", ptr->name); +} + +/* + * indirect read and write functions + * + * the 016 supports auto-addr-increment, but + * writing it all time cost not much and is safer... + */ +static u8 zr36016_readi(struct zr36016 *ptr, u16 reg) +{ + u8 value = 0; + struct zoran *zr = videocodec_to_zoran(ptr->codec); + + /* just in case something is wrong... */ + if ((ptr->codec->master_data->writereg) && (ptr->codec->master_data->readreg)) { + ptr->codec->master_data->writereg(ptr->codec, ZR016_IADDR, reg & 0x0F); + value = (ptr->codec->master_data->readreg(ptr->codec, ZR016_IDATA)) & 0xFF; + } else { + zrdev_err(zr, "%s: invalid I/O setup, nothing read (i)!\n", ptr->name); + } + + zrdev_dbg(zr, "%s: reading indirect from 0x%04x: %02x\n", + ptr->name, reg, value); + return value; +} + +static void zr36016_writei(struct zr36016 *ptr, u16 reg, u8 value) +{ + struct zoran *zr = videocodec_to_zoran(ptr->codec); + + zrdev_dbg(zr, "%s: writing indirect 0x%02x to 0x%04x\n", ptr->name, + value, reg); + + /* just in case something is wrong... */ + if (ptr->codec->master_data->writereg) { + ptr->codec->master_data->writereg(ptr->codec, ZR016_IADDR, reg & 0x0F); + ptr->codec->master_data->writereg(ptr->codec, ZR016_IDATA, value & 0x0FF); + } else { + zrdev_err(zr, "%s: invalid I/O setup, nothing written (i)!\n", ptr->name); + } +} + +/* Local helper function: version read */ + +/* version kept in datastructure */ +static u8 zr36016_read_version(struct zr36016 *ptr) +{ + ptr->version = zr36016_read(ptr, 0) >> 4; + return ptr->version; +} + +/* + * Local helper function: basic test of "connectivity", writes/reads + * to/from PAX-Lo register + */ + +static int zr36016_basic_test(struct zr36016 *ptr) +{ + struct zoran *zr = videocodec_to_zoran(ptr->codec); + + if (*KERN_INFO <= CONSOLE_LOGLEVEL_DEFAULT) { + int i; + + zr36016_writei(ptr, ZR016I_PAX_LO, 0x55); + zrdev_dbg(zr, "%s: registers: ", ptr->name); + for (i = 0; i <= 0x0b; i++) + zrdev_dbg(zr, "%02x ", zr36016_readi(ptr, i)); + zrdev_dbg(zr, "\n"); + } + // for testing just write 0, then the default value to a register and read + // it back in both cases + zr36016_writei(ptr, ZR016I_PAX_LO, 0x00); + if (zr36016_readi(ptr, ZR016I_PAX_LO) != 0x0) { + zrdev_err(zr, "%s: attach failed, can't connect to vfe processor!\n", ptr->name); + return -ENXIO; + } + zr36016_writei(ptr, ZR016I_PAX_LO, 0x0d0); + if (zr36016_readi(ptr, ZR016I_PAX_LO) != 0x0d0) { + zrdev_err(zr, "%s: attach failed, can't connect to vfe processor!\n", ptr->name); + return -ENXIO; + } + // we allow version numbers from 0-3, should be enough, though + zr36016_read_version(ptr); + if (ptr->version & 0x0c) { + zrdev_err(zr, "%s: attach failed, suspicious version %d found...\n", ptr->name, + ptr->version); + return -ENXIO; + } + + return 0; /* looks good! */ +} + +/* Basic datasets & init */ + +static void zr36016_init(struct zr36016 *ptr) +{ + // stop any processing + zr36016_write(ptr, ZR016_GOSTOP, 0); + + // mode setup (yuv422 in and out, compression/expansuon due to mode) + zr36016_write(ptr, ZR016_MODE, + ZR016_YUV422 | ZR016_YUV422_YUV422 | + (ptr->mode == CODEC_DO_COMPRESSION ? + ZR016_COMPRESSION : ZR016_EXPANSION)); + + // misc setup + zr36016_writei(ptr, ZR016I_SETUP1, + (ptr->xdec ? (ZR016_HRFL | ZR016_HORZ) : 0) | + (ptr->ydec ? ZR016_VERT : 0) | ZR016_CNTI); + zr36016_writei(ptr, ZR016I_SETUP2, ZR016_CCIR); + + // Window setup + // (no extra offset for now, norm defines offset, default width height) + zr36016_writei(ptr, ZR016I_PAX_HI, ptr->width >> 8); + zr36016_writei(ptr, ZR016I_PAX_LO, ptr->width & 0xFF); + zr36016_writei(ptr, ZR016I_PAY_HI, ptr->height >> 8); + zr36016_writei(ptr, ZR016I_PAY_LO, ptr->height & 0xFF); + zr36016_writei(ptr, ZR016I_NAX_HI, ptr->xoff >> 8); + zr36016_writei(ptr, ZR016I_NAX_LO, ptr->xoff & 0xFF); + zr36016_writei(ptr, ZR016I_NAY_HI, ptr->yoff >> 8); + zr36016_writei(ptr, ZR016I_NAY_LO, ptr->yoff & 0xFF); + + /* shall we continue now, please? */ + zr36016_write(ptr, ZR016_GOSTOP, 1); +} + +/* + * CODEC API FUNCTIONS + * + * These functions are accessed by the master via the API structure + */ + +/* + * set compression/expansion mode and launches codec - + * this should be the last call from the master before starting processing + */ +static int zr36016_set_mode(struct videocodec *codec, int mode) +{ + struct zr36016 *ptr = (struct zr36016 *)codec->data; + struct zoran *zr = videocodec_to_zoran(codec); + + zrdev_dbg(zr, "%s: set_mode %d call\n", ptr->name, mode); + + if ((mode != CODEC_DO_EXPANSION) && (mode != CODEC_DO_COMPRESSION)) + return -EINVAL; + + ptr->mode = mode; + zr36016_init(ptr); + + return 0; +} + +/* set picture size */ +static int zr36016_set_video(struct videocodec *codec, const struct tvnorm *norm, + struct vfe_settings *cap, struct vfe_polarity *pol) +{ + struct zr36016 *ptr = (struct zr36016 *)codec->data; + struct zoran *zr = videocodec_to_zoran(codec); + + zrdev_dbg(zr, "%s: set_video %d.%d, %d/%d-%dx%d (0x%x) call\n", + ptr->name, norm->h_start, norm->v_start, + cap->x, cap->y, cap->width, cap->height, + cap->decimation); + + /* + * if () return -EINVAL; + * trust the master driver that it knows what it does - so + * we allow invalid startx/y for now ... + */ + ptr->width = cap->width; + ptr->height = cap->height; + /* + * (Ronald) This is ugly. zoran_device.c, line 387 + * already mentions what happens if h_start is even + * (blue faces, etc., cr/cb inversed). There's probably + * some good reason why h_start is 0 instead of 1, so I'm + * leaving it to this for now, but really... This can be + * done a lot simpler + */ + ptr->xoff = (norm->h_start ? norm->h_start : 1) + cap->x; + /* + * Something to note here (I don't understand it), setting + * v_start too high will cause the codec to 'not work'. I + * really don't get it. values of 16 (v_start) already break + * it here. Just '0' seems to work. More testing needed! + */ + ptr->yoff = norm->v_start + cap->y; + /* (Ronald) dzjeeh, can't this thing do hor_decimation = 4? */ + ptr->xdec = ((cap->decimation & 0xff) == 1) ? 0 : 1; + ptr->ydec = (((cap->decimation >> 8) & 0xff) == 1) ? 0 : 1; + + return 0; +} + +/* additional control functions */ +static int zr36016_control(struct videocodec *codec, int type, int size, void *data) +{ + struct zr36016 *ptr = (struct zr36016 *)codec->data; + struct zoran *zr = videocodec_to_zoran(codec); + int *ival = (int *)data; + + zrdev_dbg(zr, "%s: control %d call with %d byte\n", + ptr->name, type, size); + + switch (type) { + case CODEC_G_STATUS: /* get last status - we don't know it ... */ + if (size != sizeof(int)) + return -EFAULT; + *ival = 0; + break; + + case CODEC_G_CODEC_MODE: + if (size != sizeof(int)) + return -EFAULT; + *ival = 0; + break; + + case CODEC_S_CODEC_MODE: + if (size != sizeof(int)) + return -EFAULT; + if (*ival != 0) + return -EINVAL; + /* not needed, do nothing */ + return 0; + + case CODEC_G_VFE: + case CODEC_S_VFE: + return 0; + + case CODEC_S_MMAP: + /* not available, give an error */ + return -ENXIO; + + default: + return -EINVAL; + } + + return size; +} + +/* + * Exit and unregister function: + * + * Deinitializes Zoran's JPEG processor + */ + +static int zr36016_unset(struct videocodec *codec) +{ + struct zr36016 *ptr = codec->data; + struct zoran *zr = videocodec_to_zoran(codec); + + if (ptr) { + /* do wee need some codec deinit here, too ???? */ + + zrdev_dbg(zr, "%s: finished codec #%d\n", ptr->name, ptr->num); + kfree(ptr); + codec->data = NULL; + + zr36016_codecs--; + return 0; + } + + return -EFAULT; +} + +/* + * Setup and registry function: + * + * Initializes Zoran's JPEG processor + * + * Also sets pixel size, average code size, mode (compr./decompr.) + * (the given size is determined by the processor with the video interface) + */ + +static int zr36016_setup(struct videocodec *codec) +{ + struct zr36016 *ptr; + struct zoran *zr = videocodec_to_zoran(codec); + int res; + + zrdev_dbg(zr, "zr36016: initializing VFE subsystem #%d.\n", zr36016_codecs); + + if (zr36016_codecs == MAX_CODECS) { + zrdev_err(zr, "zr36016: Can't attach more codecs!\n"); + return -ENOSPC; + } + //mem structure init + ptr = kzalloc(sizeof(*ptr), GFP_KERNEL); + codec->data = ptr; + if (!ptr) + return -ENOMEM; + + snprintf(ptr->name, sizeof(ptr->name), "zr36016[%d]", zr36016_codecs); + ptr->num = zr36016_codecs++; + ptr->codec = codec; + + //testing + res = zr36016_basic_test(ptr); + if (res < 0) { + zr36016_unset(codec); + return res; + } + //final setup + ptr->mode = CODEC_DO_COMPRESSION; + ptr->width = 768; + ptr->height = 288; + ptr->xdec = 1; + ptr->ydec = 0; + zr36016_init(ptr); + + zrdev_dbg(zr, "%s: codec v%d attached and running\n", + ptr->name, ptr->version); + + return 0; +} + +static const struct videocodec zr36016_codec = { + .name = "zr36016", + .magic = 0L, /* magic not used */ + .flags = + CODEC_FLAG_HARDWARE | CODEC_FLAG_VFE | CODEC_FLAG_ENCODER | + CODEC_FLAG_DECODER, + .type = CODEC_TYPE_ZR36016, + .setup = zr36016_setup, /* functionality */ + .unset = zr36016_unset, + .set_mode = zr36016_set_mode, + .set_video = zr36016_set_video, + .control = zr36016_control, + /* others are not used */ +}; + +/* HOOK IN DRIVER AS KERNEL MODULE */ + +int zr36016_init_module(void) +{ + zr36016_codecs = 0; + return videocodec_register(&zr36016_codec); +} + +void zr36016_cleanup_module(void) +{ + if (zr36016_codecs) { + pr_debug("zr36016: something's wrong - %d codecs left somehow.\n", + zr36016_codecs); + } + videocodec_unregister(&zr36016_codec); +} -- cgit v1.2.3