// SPDX-License-Identifier: GPL-2.0-or-later
/*
* budget-core.ko: base-driver for the SAA7146 based Budget DVB cards
*
* Compiled from various sources by Michael Hunold <[email protected]>
*
* Copyright (C) 2002 Ralph Metzler <[email protected]>
*
* Copyright (C) 1999-2002 Ralph Metzler
* & Marcus Metzler for convergence integrated media GmbH
*
* 26feb2004 Support for FS Activy Card (Grundig tuner) by
* Michael Dreher <[email protected]>,
* Oliver Endriss <[email protected]>,
* Andreas 'randy' Weinberger
*
* the project's page is at https://linuxtv.org
*/
#include "budget.h"
#include "ttpci-eeprom.h"
#define TS_WIDTH (2 * TS_SIZE)
#define TS_WIDTH_ACTIVY TS_SIZE
#define TS_WIDTH_DVBC TS_SIZE
#define TS_HEIGHT_MASK 0xf00
#define TS_HEIGHT_MASK_ACTIVY 0xc00
#define TS_HEIGHT_MASK_DVBC 0xe00
#define TS_MIN_BUFSIZE_K 188
#define TS_MAX_BUFSIZE_K 1410
#define TS_MAX_BUFSIZE_K_ACTIVY 564
#define TS_MAX_BUFSIZE_K_DVBC 1316
#define BUFFER_WARNING_WAIT (30*HZ)
int budget_debug;
EXPORT_SYMBOL_GPL(budget_debug);
static int dma_buffer_size = TS_MIN_BUFSIZE_K;
module_param_named(debug, budget_debug, int, 0644);
module_param_named(bufsize, dma_buffer_size, int, 0444);
MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off).");
MODULE_PARM_DESC(bufsize, "DMA buffer size in KB, default: 188, min: 188, max: 1410 (Activy: 564)");
/****************************************************************************
* TT budget / WinTV Nova
****************************************************************************/
static int stop_ts_capture(struct budget *budget)
{
dprintk(2, "budget: %p\n", budget);
saa7146_write(budget->dev, MC1, MASK_20); // DMA3 off
SAA7146_IER_DISABLE(budget->dev, MASK_10);
return 0;
}
static int start_ts_capture(struct budget *budget)
{
struct saa7146_dev *dev = budget->dev;
dprintk(2, "budget: %p\n", budget);
if (!budget->feeding || !budget->fe_synced)
return 0;
saa7146_write(dev, MC1, MASK_20); // DMA3 off
memset(budget->grabbing, 0x00, budget->buffer_size);
saa7146_write(dev, PCI_BT_V1, 0x001c0000 | (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));
budget->ttbp = 0;
/*
* Signal path on the Activy:
*
* tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory
*
* Since the tuner feeds 204 bytes packets into the SAA7146,
* DMA3 is configured to strip the trailing 16 FEC bytes:
* Pitch: 188, NumBytes3: 188, NumLines3: 1024
*/
switch (budget->card->type) {
case BUDGET_FS_ACTIVY:
saa7146_write(dev, DD1_INIT, 0x04000000);
saa7146_write(dev, MC2, (MASK_09 | MASK_25));
saa7146_write(dev, BRS_CTRL, 0x00000000);
break;
case BUDGET_PATCH:
saa7146_write(dev, DD1_INIT, 0x00000200);
saa7146_write(dev, MC2, (MASK_10 | MASK_26));
saa7146_write(dev, BRS_CTRL, 0x60000000);
break;
case BUDGET_CIN1200C_MK3:
case BUDGET_KNC1C_MK3:
case BUDGET_KNC1C_TDA10024:
case BUDGET_KNC1CP_MK3:
if (budget->video_port == BUDGET_VIDEO_PORTA) {
saa7146_write(dev, DD1_INIT, 0x06000200);
saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
saa7146_write(dev, BRS_CTRL, 0x00000000);
} else {
saa7146_write(dev, DD1_INIT, 0x00000600);
saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
saa7146_write(dev, BRS_CTRL, 0x60000000);
}
break;
default:
if (budget->video_port == BUDGET_VIDEO_PORTA) {
saa7146_write(dev, DD1_INIT, 0x06000200);
saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
saa7146_write(dev, BRS_CTRL, 0x00000000);
} else {
saa7146_write(dev, DD1_INIT, 0x02000600);
saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
saa7146_write(dev, BRS_CTRL, 0x60000000);
}
}
saa7146_write(dev, MC2, (MASK_08 | MASK_24));
mdelay(10);
saa7146_write(dev, BASE_ODD3, 0);
if (budget->buffer_size > budget->buffer_height * budget->buffer_width) {
// using odd/even buffers
saa7146_write(dev, BASE_EVEN3, budget->buffer_height * budget->buffer_width);
} else {
// using a single buffer
saa7146_write(dev, BASE_EVEN3, 0);
}
saa7146_write(dev, PROT_ADDR3, budget->buffer_size);
saa7146_write(dev, BASE_PAGE3, budget->pt.dma | ME1 | 0x90);
saa7146_write(dev, PITCH3, budget->buffer_width);
saa7146_write(dev, NUM_LINE_BYTE3,
(budget->buffer_height << 16) | budget->buffer_width);
saa7146_write(dev, MC2, (MASK_04 | MASK_20));
SAA7146_ISR_CLEAR(budget->dev, MASK_10); /* VPE */
SAA7146_IER_ENABLE(budget->dev, MASK_10); /* VPE */
saa7146_write(dev, MC1, (MASK_04 | MASK_20)); /* DMA3 on */
return 0;
}
static int budget_read_fe_status(struct dvb_frontend *fe,
enum fe_status *status)
{
struct budget *budget = fe->dvb->priv;
int synced;
int ret;
if (budget->read_fe_status)
ret = budget->read_fe_status(fe, status);
else
ret = -EINVAL;
if (!ret) {
synced = (*status & FE_HAS_LOCK);
if (synced != budget->fe_synced) {
budget->fe_synced = synced;
spin_lock(&budget->feedlock);
if (synced)
start_ts_capture(budget);
else
stop_ts_capture(budget);
spin_unlock(&budget->feedlock);
}
}
return ret;
}
static void vpeirq(struct work_struct *t)
{
struct budget *budget = from_work(budget, t, vpe_bh_work);
u8 *mem = (u8 *) (budget->grabbing);
u32 olddma = budget->ttbp;
u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
u32 count;
/* Ensure streamed PCI data is synced to CPU */
dma_sync_sg_for_cpu(&budget->dev->pci->dev, budget->pt.slist,
budget->pt.nents, DMA_FROM_DEVICE);
/* nearest lower position divisible by 188 */
newdma -= newdma % 188;
if (newdma >= budget->buffer_size)
return;
budget->ttbp = newdma;
if (budget->feeding == 0 || newdma == olddma)
return;
if (newdma > olddma) { /* no wraparound, dump olddma..newdma */
count = newdma - olddma;
dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
} else { /* wraparound, dump olddma..buflen and 0..newdma */
count = budget->buffer_size - olddma;
dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
count += newdma;
dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);
}
if (count > budget->buffer_warning_threshold)
budget->buffer_warnings++;
if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) {
pr_warn("%s %s: used %d times >80%% of buffer (%u bytes now)\n",
budget->dev->name, __func__, budget->buffer_warnings, count);
budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT;
budget->buffer_warnings = 0;
}
}
static int ttpci_budget_debiread_nolock(struct budget *budget, u32 config,
int addr, int count, int nobusyloop)
{
struct saa7146_dev *saa = budget->dev;
int result;
result = saa7146_wait_for_debi_done(saa, nobusyloop);
if (result < 0)
return result;
saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff));
saa7146_write(saa, DEBI_CONFIG, config);
saa7146_write(saa, DEBI_PAGE, 0);
saa7146_write(saa, MC2, (2 << 16) | 2);
result = saa7146_wait_for_debi_done(saa, nobusyloop);
if (result < 0)
return result;
result = saa7146_read(saa, DEBI_AD);
result &= (0xffffffffUL >> ((4 - count) * 8));
return result;
}
int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count,
int uselocks, int nobusyloop)
{
if (count > 4 || count <= 0)
return 0;
if (uselocks) {
unsigned long flags;
int result;
spin_lock_irqsave(&budget->debilock, flags);
result = ttpci_budget_debiread_nolock(budget, config, addr,
count, nobusyloop);
spin_unlock_irqrestore(&budget->debilock, flags);
return result;
}
return ttpci_budget_debiread_nolock(budget, config, addr,
count, nobusyloop);
}
EXPORT_SYMBOL_GPL(ttpci_budget_debiread);
static int ttpci_budget_debiwrite_nolock(struct budget *budget, u32 config,
int addr, int count, u32 value, int nobusyloop)
{
struct saa7146_dev *saa = budget->dev;
int result;
result = saa7146_wait_for_debi_done(saa, nobusyloop);
if (result < 0)
return result;
saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff));
saa7146_write(saa, DEBI_CONFIG, config);
saa7146_write(saa, DEBI_PAGE, 0);
saa7146_write(saa, DEBI_AD, value);
saa7146_write(saa, MC2, (2 << 16) | 2);
result = saa7146_wait_for_debi_done(saa, nobusyloop);
return result < 0 ? result : 0;
}
int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr,
int count, u32 value, int uselocks, int nobusyloop)
{
if (count > 4 || count <= 0)
return 0;
if (uselocks) {
unsigned long flags;
int result;
spin_lock_irqsave(&budget->debilock, flags);
result = ttpci_budget_debiwrite_nolock(budget, config, addr,
count, value, nobusyloop);
spin_unlock_irqrestore(&budget->debilock, flags);
return result;
}
return ttpci_budget_debiwrite_nolock(budget, config, addr,
count, value, nobusyloop);
}
EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite);
/****************************************************************************
* DVB API SECTION
****************************************************************************/
static int budget_start_feed(struct dvb_demux_feed *feed)
{
struct dvb_demux *demux = feed->demux;
struct budget *budget = demux->priv;
int status = 0;
dprintk(2, "budget: %p\n", budget);
if (!demux->dmx.frontend)
return -EINVAL;
spin_lock(&budget->feedlock);
feed->pusi_seen = false; /* have a clean section start */
if (budget->feeding++ == 0)
status = start_ts_capture(budget);
spin_unlock(&budget->feedlock);
return status;
}
static int budget_stop_feed(struct dvb_demux_feed *feed)
{
struct dvb_demux *demux = feed->demux;
struct budget *budget = demux->priv;
int status = 0;
dprintk(2, "budget: %p\n", budget);
spin_lock(&budget->feedlock);
if (--budget->feeding == 0)
status = stop_ts_capture(budget);
spin_unlock(&budget->feedlock);
return status;
}
static int budget_register(struct budget *budget)
{
struct dvb_demux *dvbdemux = &budget->demux;
int ret;
dprintk(2, "budget: %p\n", budget);
dvbdemux->priv = (void *) budget;
dvbdemux->filternum = 256;
dvbdemux->feednum = 256;
dvbdemux->start_feed = budget_start_feed;
dvbdemux->stop_feed = budget_stop_feed;
dvbdemux->write_to_decoder = NULL;
dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING |
DMX_MEMORY_BASED_FILTERING);
dvb_dmx_init(&budget->demux);
budget->dmxdev.filternum = 256;
budget->dmxdev.demux = &dvbdemux->dmx;
budget->dmxdev.capabilities = 0;
dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter);
budget->hw_frontend.source = DMX_FRONTEND_0;
ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);
if (ret < 0)
goto err_release_dmx;
budget->mem_frontend.source = DMX_MEMORY_FE;
ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);
if (ret < 0)
goto err_release_dmx;
ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);
if (ret < 0)
goto err_release_dmx;
dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);
return 0;
err_release_dmx:
dvb_dmxdev_release(&budget->dmxdev);
dvb_dmx_release(&budget->demux);
return ret;
}
static void budget_unregister(struct budget *budget)
{
struct dvb_demux *dvbdemux = &budget->demux;
dprintk(2, "budget: %p\n", budget);
dvb_net_release(&budget->dvb_net);
dvbdemux->dmx.close(&dvbdemux->dmx);
dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend);
dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend);
dvb_dmxdev_release(&budget->dmxdev);
dvb_dmx_release(&budget->demux);
}
int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev,
struct saa7146_pci_extension_data *info,
struct module *owner, short *adapter_nums)
{
int ret = 0;
struct budget_info *bi = info->ext_priv;
int max_bufsize;
int height_mask;
memset(budget, 0, sizeof(struct budget));
dprintk(2, "dev: %p, budget: %p\n", dev, budget);
budget->card = bi;
budget->dev = (struct saa7146_dev *) dev;
switch (budget->card->type) {
case BUDGET_FS_ACTIVY:
budget->buffer_width = TS_WIDTH_ACTIVY;
max_bufsize = TS_MAX_BUFSIZE_K_ACTIVY;
height_mask = TS_HEIGHT_MASK_ACTIVY;
break;
case BUDGET_KNC1C:
case BUDGET_KNC1CP:
case BUDGET_CIN1200C:
case BUDGET_KNC1C_MK3:
case BUDGET_KNC1C_TDA10024:
case BUDGET_KNC1CP_MK3:
case BUDGET_CIN1200C_MK3:
budget->buffer_width = TS_WIDTH_DVBC;
max_bufsize = TS_MAX_BUFSIZE_K_DVBC;
height_mask = TS_HEIGHT_MASK_DVBC;
break;
default:
budget->buffer_width = TS_WIDTH;
max_bufsize = TS_MAX_BUFSIZE_K;
height_mask = TS_HEIGHT_MASK;
}
if (dma_buffer_size < TS_MIN_BUFSIZE_K)
dma_buffer_size = TS_MIN_BUFSIZE_K;
else if (dma_buffer_size > max_bufsize)
dma_buffer_size = max_bufsize;
budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width;
if (budget->buffer_height > 0xfff) {
budget->buffer_height /= 2;
budget->buffer_height &= height_mask;
budget->buffer_size = 2 * budget->buffer_height * budget->buffer_width;
} else {
budget->buffer_height &= height_mask;
budget->buffer_size = budget->buffer_height * budget->buffer_width;
}
budget->buffer_warning_threshold = budget->buffer_size * 80/100;
budget->buffer_warnings = 0;
budget->buffer_warning_time = jiffies;
dprintk(2, "%s: buffer type = %s, width = %d, height = %d\n",
budget->dev->name,
budget->buffer_size > budget->buffer_width * budget->buffer_height ? "odd/even" : "single",
budget->buffer_width, budget->buffer_height);
pr_info("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size);
ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name,
owner, &budget->dev->pci->dev, adapter_nums);
if (ret < 0)
return ret;
/* set dd1 stream a & b */
saa7146_write(dev, DD1_STREAM_B, 0x00000000);
saa7146_write(dev, MC2, (MASK_09 | MASK_25));
saa7146_write(dev, MC2, (MASK_10 | MASK_26));
saa7146_write(dev, DD1_INIT, 0x02000000);
saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
if (bi->type != BUDGET_FS_ACTIVY)
budget->video_port = BUDGET_VIDEO_PORTB;
else
budget->video_port = BUDGET_VIDEO_PORTA;
spin_lock_init(&budget->feedlock);
spin_lock_init(&budget->debilock);
/*
* the Siemens DVB needs this if you want to have the i2c chips
* get recognized before the main driver is loaded
*/
if (bi->type != BUDGET_FS_ACTIVY)
saa7146_write(dev, GPIO_CTRL, 0x500000); /* GPIO 3 = 1 */
strscpy(budget->i2c_adap.name, budget->card->name,
sizeof(budget->i2c_adap.name));
saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120);
strscpy(budget->i2c_adap.name, budget->card->name,
sizeof(budget->i2c_adap.name));
if (i2c_add_adapter(&budget->i2c_adap) < 0) {
ret = -ENOMEM;
goto err_dvb_unregister;
}
ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac);
budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt);
if (budget->grabbing == NULL) {
ret = -ENOMEM;
goto err_del_i2c;
}
saa7146_write(dev, PCI_BT_V1, 0x001c0000);
/* upload all */
saa7146_write(dev, GPIO_CTRL, 0x000000);
INIT_WORK(&budget->vpe_bh_work, vpeirq);
/* frontend power on */
if (bi->type != BUDGET_FS_ACTIVY)
saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
ret = budget_register(budget);
if (ret == 0)
return 0; /* Everything OK */
/* An error occurred, cleanup resources */
saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);
err_del_i2c:
i2c_del_adapter(&budget->i2c_adap);
err_dvb_unregister:
dvb_unregister_adapter(&budget->dvb_adapter);
return ret;
}
EXPORT_SYMBOL_GPL(ttpci_budget_init);
void ttpci_budget_init_hooks(struct budget *budget)
{
if (budget->dvb_frontend && !budget->read_fe_status) {
budget->read_fe_status = budget->dvb_frontend->ops.read_status;
budget->dvb_frontend->ops.read_status = budget_read_fe_status;
}
}
EXPORT_SYMBOL_GPL(ttpci_budget_init_hooks);
int ttpci_budget_deinit(struct budget *budget)
{
struct saa7146_dev *dev = budget->dev;
dprintk(2, "budget: %p\n", budget);
budget_unregister(budget);
cancel_work_sync(&budget->vpe_bh_work);
saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);
i2c_del_adapter(&budget->i2c_adap);
dvb_unregister_adapter(&budget->dvb_adapter);
return 0;
}
EXPORT_SYMBOL_GPL(ttpci_budget_deinit);
void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 *isr)
{
struct budget *budget = dev->ext_priv;
dprintk(8, "dev: %p, budget: %p\n", dev, budget);
if (*isr & MASK_10)
queue_work(system_bh_wq, &budget->vpe_bh_work);
}
EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port)
{
struct budget *budget = dev->ext_priv;
spin_lock(&budget->feedlock);
budget->video_port = video_port;
if (budget->feeding) {
stop_ts_capture(budget);
start_ts_capture(budget);
}
spin_unlock(&budget->feedlock);
}
EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
MODULE_DESCRIPTION("base driver for the SAA7146 based Budget DVB cards");
MODULE_LICENSE("GPL");
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