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linux/drivers/media/video/ivtv/ivtv-firmware.c
Ian Armstrong a54d1dea00 V4L/DVB (7242): ivtv: fix for yuv filter table check 
As the result of a previous change that delayed the loading of the firmware,
the driver can sometimes report a bogus error regarding the yuv output filter
table not being found in the firmware. This patch moves the filter table
check to ensure it's only done after the firmware has been loaded.

Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-03-20 12:38:57 -03:00

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8.5 KiB
C
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/*
ivtv firmware functions.
Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
Copyright (C) 2004 Chris Kennedy <c@groovy.org>
Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "ivtv-driver.h"
#include "ivtv-mailbox.h"
#include "ivtv-firmware.h"
#include "ivtv-yuv.h"
#include <linux/firmware.h>
#define IVTV_MASK_SPU_ENABLE 0xFFFFFFFE
#define IVTV_MASK_VPU_ENABLE15 0xFFFFFFF6
#define IVTV_MASK_VPU_ENABLE16 0xFFFFFFFB
#define IVTV_CMD_VDM_STOP 0x00000000
#define IVTV_CMD_AO_STOP 0x00000005
#define IVTV_CMD_APU_PING 0x00000000
#define IVTV_CMD_VPU_STOP15 0xFFFFFFFE
#define IVTV_CMD_VPU_STOP16 0xFFFFFFEE
#define IVTV_CMD_HW_BLOCKS_RST 0xFFFFFFFF
#define IVTV_CMD_SPU_STOP 0x00000001
#define IVTV_CMD_SDRAM_PRECHARGE_INIT 0x0000001A
#define IVTV_CMD_SDRAM_REFRESH_INIT 0x80000640
#define IVTV_SDRAM_SLEEPTIME 600
#define IVTV_DECODE_INIT_MPEG_FILENAME "v4l-cx2341x-init.mpg"
#define IVTV_DECODE_INIT_MPEG_SIZE (152*1024)
/* Encoder/decoder firmware sizes */
#define IVTV_FW_ENC_SIZE (376836)
#define IVTV_FW_DEC_SIZE (256*1024)
static int load_fw_direct(const char *fn, volatile u8 __iomem *mem, struct ivtv *itv, long size)
{
const struct firmware *fw = NULL;
int retries = 3;
retry:
if (retries && request_firmware(&fw, fn, &itv->dev->dev) == 0) {
int i;
volatile u32 __iomem *dst = (volatile u32 __iomem *)mem;
const u32 *src = (const u32 *)fw->data;
if (fw->size != size) {
/* Due to race conditions in firmware loading (esp. with udev <0.95)
the wrong file was sometimes loaded. So we check filesizes to
see if at least the right-sized file was loaded. If not, then we
retry. */
IVTV_INFO("Retry: file loaded was not %s (expected size %ld, got %zd)\n", fn, size, fw->size);
release_firmware(fw);
retries--;
goto retry;
}
for (i = 0; i < fw->size; i += 4) {
/* no need for endianness conversion on the ppc */
__raw_writel(*src, dst);
dst++;
src++;
}
IVTV_INFO("Loaded %s firmware (%zd bytes)\n", fn, fw->size);
release_firmware(fw);
return size;
}
IVTV_ERR("Unable to open firmware %s (must be %ld bytes)\n", fn, size);
IVTV_ERR("Did you put the firmware in the hotplug firmware directory?\n");
return -ENOMEM;
}
void ivtv_halt_firmware(struct ivtv *itv)
{
IVTV_DEBUG_INFO("Preparing for firmware halt.\n");
if (itv->has_cx23415 && itv->dec_mbox.mbox)
ivtv_vapi(itv, CX2341X_DEC_HALT_FW, 0);
if (itv->enc_mbox.mbox)
ivtv_vapi(itv, CX2341X_ENC_HALT_FW, 0);
ivtv_msleep_timeout(10, 0);
itv->enc_mbox.mbox = itv->dec_mbox.mbox = NULL;
IVTV_DEBUG_INFO("Stopping VDM\n");
write_reg(IVTV_CMD_VDM_STOP, IVTV_REG_VDM);
IVTV_DEBUG_INFO("Stopping AO\n");
write_reg(IVTV_CMD_AO_STOP, IVTV_REG_AO);
IVTV_DEBUG_INFO("pinging (?) APU\n");
write_reg(IVTV_CMD_APU_PING, IVTV_REG_APU);
IVTV_DEBUG_INFO("Stopping VPU\n");
if (!itv->has_cx23415)
write_reg(IVTV_CMD_VPU_STOP16, IVTV_REG_VPU);
else
write_reg(IVTV_CMD_VPU_STOP15, IVTV_REG_VPU);
IVTV_DEBUG_INFO("Resetting Hw Blocks\n");
write_reg(IVTV_CMD_HW_BLOCKS_RST, IVTV_REG_HW_BLOCKS);
IVTV_DEBUG_INFO("Stopping SPU\n");
write_reg(IVTV_CMD_SPU_STOP, IVTV_REG_SPU);
ivtv_msleep_timeout(10, 0);
IVTV_DEBUG_INFO("init Encoder SDRAM pre-charge\n");
write_reg(IVTV_CMD_SDRAM_PRECHARGE_INIT, IVTV_REG_ENC_SDRAM_PRECHARGE);
IVTV_DEBUG_INFO("init Encoder SDRAM refresh to 1us\n");
write_reg(IVTV_CMD_SDRAM_REFRESH_INIT, IVTV_REG_ENC_SDRAM_REFRESH);
if (itv->has_cx23415) {
IVTV_DEBUG_INFO("init Decoder SDRAM pre-charge\n");
write_reg(IVTV_CMD_SDRAM_PRECHARGE_INIT, IVTV_REG_DEC_SDRAM_PRECHARGE);
IVTV_DEBUG_INFO("init Decoder SDRAM refresh to 1us\n");
write_reg(IVTV_CMD_SDRAM_REFRESH_INIT, IVTV_REG_DEC_SDRAM_REFRESH);
}
IVTV_DEBUG_INFO("Sleeping for %dms\n", IVTV_SDRAM_SLEEPTIME);
ivtv_msleep_timeout(IVTV_SDRAM_SLEEPTIME, 0);
}
void ivtv_firmware_versions(struct ivtv *itv)
{
u32 data[CX2341X_MBOX_MAX_DATA];
/* Encoder */
ivtv_vapi_result(itv, data, CX2341X_ENC_GET_VERSION, 0);
IVTV_INFO("Encoder revision: 0x%08x\n", data[0]);
if (data[0] != 0x02060039)
IVTV_WARN("Recommended firmware version is 0x02060039.\n");
if (itv->has_cx23415) {
/* Decoder */
ivtv_vapi_result(itv, data, CX2341X_DEC_GET_VERSION, 0);
IVTV_INFO("Decoder revision: 0x%08x\n", data[0]);
}
}
static int ivtv_firmware_copy(struct ivtv *itv)
{
IVTV_DEBUG_INFO("Loading encoder image\n");
if (load_fw_direct(CX2341X_FIRM_ENC_FILENAME,
itv->enc_mem, itv, IVTV_FW_ENC_SIZE) != IVTV_FW_ENC_SIZE) {
IVTV_DEBUG_WARN("failed loading encoder firmware\n");
return -3;
}
if (!itv->has_cx23415)
return 0;
IVTV_DEBUG_INFO("Loading decoder image\n");
if (load_fw_direct(CX2341X_FIRM_DEC_FILENAME,
itv->dec_mem, itv, IVTV_FW_DEC_SIZE) != IVTV_FW_DEC_SIZE) {
IVTV_DEBUG_WARN("failed loading decoder firmware\n");
return -1;
}
return 0;
}
static volatile struct ivtv_mailbox __iomem *ivtv_search_mailbox(const volatile u8 __iomem *mem, u32 size)
{
int i;
/* mailbox is preceeded by a 16 byte 'magic cookie' starting at a 256-byte
address boundary */
for (i = 0; i < size; i += 0x100) {
if (readl(mem + i) == 0x12345678 &&
readl(mem + i + 4) == 0x34567812 &&
readl(mem + i + 8) == 0x56781234 &&
readl(mem + i + 12) == 0x78123456) {
return (volatile struct ivtv_mailbox __iomem *)(mem + i + 16);
}
}
return NULL;
}
int ivtv_firmware_init(struct ivtv *itv)
{
int err;
ivtv_halt_firmware(itv);
/* load firmware */
err = ivtv_firmware_copy(itv);
if (err) {
IVTV_DEBUG_WARN("Error %d loading firmware\n", err);
return err;
}
/* start firmware */
write_reg(read_reg(IVTV_REG_SPU) & IVTV_MASK_SPU_ENABLE, IVTV_REG_SPU);
ivtv_msleep_timeout(100, 0);
if (itv->has_cx23415)
write_reg(read_reg(IVTV_REG_VPU) & IVTV_MASK_VPU_ENABLE15, IVTV_REG_VPU);
else
write_reg(read_reg(IVTV_REG_VPU) & IVTV_MASK_VPU_ENABLE16, IVTV_REG_VPU);
ivtv_msleep_timeout(100, 0);
/* find mailboxes and ping firmware */
itv->enc_mbox.mbox = ivtv_search_mailbox(itv->enc_mem, IVTV_ENCODER_SIZE);
if (itv->enc_mbox.mbox == NULL)
IVTV_ERR("Encoder mailbox not found\n");
else if (ivtv_vapi(itv, CX2341X_ENC_PING_FW, 0)) {
IVTV_ERR("Encoder firmware dead!\n");
itv->enc_mbox.mbox = NULL;
}
if (itv->enc_mbox.mbox == NULL)
return -ENODEV;
if (!itv->has_cx23415)
return 0;
itv->dec_mbox.mbox = ivtv_search_mailbox(itv->dec_mem, IVTV_DECODER_SIZE);
if (itv->dec_mbox.mbox == NULL) {
IVTV_ERR("Decoder mailbox not found\n");
} else if (itv->has_cx23415 && ivtv_vapi(itv, CX2341X_DEC_PING_FW, 0)) {
IVTV_ERR("Decoder firmware dead!\n");
itv->dec_mbox.mbox = NULL;
} else {
/* Firmware okay, so check yuv output filter table */
ivtv_yuv_filter_check(itv);
}
return itv->dec_mbox.mbox ? 0 : -ENODEV;
}
void ivtv_init_mpeg_decoder(struct ivtv *itv)
{
u32 data[CX2341X_MBOX_MAX_DATA];
long readbytes;
volatile u8 __iomem *mem_offset;
data[0] = 0;
data[1] = itv->params.width; /* YUV source width */
data[2] = itv->params.height;
data[3] = itv->params.audio_properties; /* Audio settings to use,
bitmap. see docs. */
if (ivtv_api(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, data)) {
IVTV_ERR("ivtv_init_mpeg_decoder failed to set decoder source\n");
return;
}
if (ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1) != 0) {
IVTV_ERR("ivtv_init_mpeg_decoder failed to start playback\n");
return;
}
ivtv_api_get_data(&itv->dec_mbox, IVTV_MBOX_DMA, data);
mem_offset = itv->dec_mem + data[1];
if ((readbytes = load_fw_direct(IVTV_DECODE_INIT_MPEG_FILENAME,
mem_offset, itv, IVTV_DECODE_INIT_MPEG_SIZE)) <= 0) {
IVTV_DEBUG_WARN("failed to read mpeg decoder initialisation file %s\n",
IVTV_DECODE_INIT_MPEG_FILENAME);
} else {
ivtv_vapi(itv, CX2341X_DEC_SCHED_DMA_FROM_HOST, 3, 0, readbytes, 0);
ivtv_msleep_timeout(100, 0);
}
ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 4, 0, 0, 0, 1);
}
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