mirror of https://gitee.com/openkylin/linux.git
529 lines
15 KiB
C
529 lines
15 KiB
C
/*
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* budget-core.c: driver for the SAA7146 based Budget DVB cards
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*
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* Compiled from various sources by Michael Hunold <michael@mihu.de>
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*
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* Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de>
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*
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* Copyright (C) 1999-2002 Ralph Metzler
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* & Marcus Metzler for convergence integrated media GmbH
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*
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* 26feb2004 Support for FS Activy Card (Grundig tuner) by
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* Michael Dreher <michael@5dot1.de>,
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* Oliver Endriss <o.endriss@gmx.de>,
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* Andreas 'randy' Weinberger
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
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*
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*
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* the project's page is at http://www.linuxtv.org/dvb/
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*/
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#include <linux/moduleparam.h>
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#include "budget.h"
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#include "ttpci-eeprom.h"
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#define TS_WIDTH (2 * TS_SIZE)
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#define TS_WIDTH_ACTIVY TS_SIZE
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#define TS_HEIGHT_MASK 0xf00
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#define TS_HEIGHT_MASK_ACTIVY 0xc00
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#define TS_MIN_BUFSIZE_K 188
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#define TS_MAX_BUFSIZE_K 1410
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#define TS_MAX_BUFSIZE_K_ACTIVY 564
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#define BUFFER_WARNING_WAIT (30*HZ)
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int budget_debug;
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static int dma_buffer_size = TS_MIN_BUFSIZE_K;
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module_param_named(debug, budget_debug, int, 0644);
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module_param_named(bufsize, dma_buffer_size, int, 0444);
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MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off).");
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MODULE_PARM_DESC(bufsize, "DMA buffer size in KB, default: 188, min: 188, max: 1410 (Activy: 564)");
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/****************************************************************************
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* TT budget / WinTV Nova
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****************************************************************************/
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static int stop_ts_capture(struct budget *budget)
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{
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dprintk(2, "budget: %p\n", budget);
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if (--budget->feeding)
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return budget->feeding;
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saa7146_write(budget->dev, MC1, MASK_20); // DMA3 off
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SAA7146_IER_DISABLE(budget->dev, MASK_10);
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return 0;
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}
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static int start_ts_capture(struct budget *budget)
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{
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struct saa7146_dev *dev = budget->dev;
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dprintk(2, "budget: %p\n", budget);
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if (budget->feeding)
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return ++budget->feeding;
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saa7146_write(dev, MC1, MASK_20); // DMA3 off
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memset(budget->grabbing, 0x00, budget->buffer_size);
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saa7146_write(dev, PCI_BT_V1, 0x001c0000 | (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));
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budget->ttbp = 0;
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/*
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* Signal path on the Activy:
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*
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* tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory
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*
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* Since the tuner feeds 204 bytes packets into the SAA7146,
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* DMA3 is configured to strip the trailing 16 FEC bytes:
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* Pitch: 188, NumBytes3: 188, NumLines3: 1024
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*/
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switch(budget->card->type) {
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case BUDGET_FS_ACTIVY:
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saa7146_write(dev, DD1_INIT, 0x04000000);
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saa7146_write(dev, MC2, (MASK_09 | MASK_25));
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saa7146_write(dev, BRS_CTRL, 0x00000000);
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break;
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case BUDGET_PATCH:
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saa7146_write(dev, DD1_INIT, 0x00000200);
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saa7146_write(dev, MC2, (MASK_10 | MASK_26));
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saa7146_write(dev, BRS_CTRL, 0x60000000);
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break;
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default:
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if (budget->video_port == BUDGET_VIDEO_PORTA) {
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saa7146_write(dev, DD1_INIT, 0x06000200);
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saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
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saa7146_write(dev, BRS_CTRL, 0x00000000);
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} else {
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saa7146_write(dev, DD1_INIT, 0x02000600);
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saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
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saa7146_write(dev, BRS_CTRL, 0x60000000);
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}
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}
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saa7146_write(dev, MC2, (MASK_08 | MASK_24));
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mdelay(10);
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saa7146_write(dev, BASE_ODD3, 0);
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saa7146_write(dev, BASE_EVEN3, 0);
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saa7146_write(dev, PROT_ADDR3, budget->buffer_size);
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saa7146_write(dev, BASE_PAGE3, budget->pt.dma | ME1 | 0x90);
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saa7146_write(dev, PITCH3, budget->buffer_width);
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saa7146_write(dev, NUM_LINE_BYTE3,
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(budget->buffer_height << 16) | budget->buffer_width);
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saa7146_write(dev, MC2, (MASK_04 | MASK_20));
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SAA7146_ISR_CLEAR(budget->dev, MASK_10); /* VPE */
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SAA7146_IER_ENABLE(budget->dev, MASK_10); /* VPE */
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saa7146_write(dev, MC1, (MASK_04 | MASK_20)); /* DMA3 on */
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return ++budget->feeding;
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}
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static void vpeirq(unsigned long data)
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{
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struct budget *budget = (struct budget *) data;
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u8 *mem = (u8 *) (budget->grabbing);
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u32 olddma = budget->ttbp;
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u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
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u32 count;
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/* nearest lower position divisible by 188 */
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newdma -= newdma % 188;
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if (newdma >= budget->buffer_size)
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return;
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budget->ttbp = newdma;
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if (budget->feeding == 0 || newdma == olddma)
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return;
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if (newdma > olddma) { /* no wraparound, dump olddma..newdma */
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count = newdma - olddma;
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dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
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} else { /* wraparound, dump olddma..buflen and 0..newdma */
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count = budget->buffer_size - olddma;
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dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
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count += newdma;
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dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);
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}
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if (count > budget->buffer_warning_threshold)
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budget->buffer_warnings++;
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if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) {
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printk("%s %s: used %d times >80%% of buffer (%u bytes now)\n",
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budget->dev->name, __FUNCTION__, budget->buffer_warnings, count);
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budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT;
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budget->buffer_warnings = 0;
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}
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}
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int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count,
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int uselocks, int nobusyloop)
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{
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struct saa7146_dev *saa = budget->dev;
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int result = 0;
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unsigned long flags = 0;
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if (count > 4 || count <= 0)
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return 0;
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if (uselocks)
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spin_lock_irqsave(&budget->debilock, flags);
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if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
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if (uselocks)
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spin_unlock_irqrestore(&budget->debilock, flags);
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return result;
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}
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saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff));
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saa7146_write(saa, DEBI_CONFIG, config);
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saa7146_write(saa, DEBI_PAGE, 0);
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saa7146_write(saa, MC2, (2 << 16) | 2);
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if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
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if (uselocks)
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spin_unlock_irqrestore(&budget->debilock, flags);
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return result;
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}
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result = saa7146_read(saa, DEBI_AD);
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result &= (0xffffffffUL >> ((4 - count) * 8));
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if (uselocks)
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spin_unlock_irqrestore(&budget->debilock, flags);
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return result;
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}
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int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr,
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int count, u32 value, int uselocks, int nobusyloop)
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{
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struct saa7146_dev *saa = budget->dev;
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unsigned long flags = 0;
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int result;
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if (count > 4 || count <= 0)
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return 0;
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if (uselocks)
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spin_lock_irqsave(&budget->debilock, flags);
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if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
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if (uselocks)
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spin_unlock_irqrestore(&budget->debilock, flags);
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return result;
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}
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saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff));
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saa7146_write(saa, DEBI_CONFIG, config);
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saa7146_write(saa, DEBI_PAGE, 0);
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saa7146_write(saa, DEBI_AD, value);
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saa7146_write(saa, MC2, (2 << 16) | 2);
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if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
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if (uselocks)
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spin_unlock_irqrestore(&budget->debilock, flags);
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return result;
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}
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if (uselocks)
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spin_unlock_irqrestore(&budget->debilock, flags);
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return 0;
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}
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/****************************************************************************
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* DVB API SECTION
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****************************************************************************/
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static int budget_start_feed(struct dvb_demux_feed *feed)
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{
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struct dvb_demux *demux = feed->demux;
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struct budget *budget = (struct budget *) demux->priv;
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int status;
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dprintk(2, "budget: %p\n", budget);
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if (!demux->dmx.frontend)
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return -EINVAL;
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spin_lock(&budget->feedlock);
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feed->pusi_seen = 0; /* have a clean section start */
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status = start_ts_capture(budget);
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spin_unlock(&budget->feedlock);
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return status;
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}
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static int budget_stop_feed(struct dvb_demux_feed *feed)
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{
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struct dvb_demux *demux = feed->demux;
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struct budget *budget = (struct budget *) demux->priv;
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int status;
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dprintk(2, "budget: %p\n", budget);
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spin_lock(&budget->feedlock);
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status = stop_ts_capture(budget);
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spin_unlock(&budget->feedlock);
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return status;
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}
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static int budget_register(struct budget *budget)
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{
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struct dvb_demux *dvbdemux = &budget->demux;
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int ret;
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dprintk(2, "budget: %p\n", budget);
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dvbdemux->priv = (void *) budget;
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dvbdemux->filternum = 256;
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dvbdemux->feednum = 256;
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dvbdemux->start_feed = budget_start_feed;
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dvbdemux->stop_feed = budget_stop_feed;
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dvbdemux->write_to_decoder = NULL;
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dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING |
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DMX_MEMORY_BASED_FILTERING);
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dvb_dmx_init(&budget->demux);
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budget->dmxdev.filternum = 256;
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budget->dmxdev.demux = &dvbdemux->dmx;
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budget->dmxdev.capabilities = 0;
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dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter);
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budget->hw_frontend.source = DMX_FRONTEND_0;
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ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);
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if (ret < 0)
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return ret;
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budget->mem_frontend.source = DMX_MEMORY_FE;
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ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);
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if (ret < 0)
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return ret;
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ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);
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if (ret < 0)
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return ret;
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dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);
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return 0;
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}
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static void budget_unregister(struct budget *budget)
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{
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struct dvb_demux *dvbdemux = &budget->demux;
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dprintk(2, "budget: %p\n", budget);
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dvb_net_release(&budget->dvb_net);
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dvbdemux->dmx.close(&dvbdemux->dmx);
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dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend);
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dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend);
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dvb_dmxdev_release(&budget->dmxdev);
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dvb_dmx_release(&budget->demux);
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}
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int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev,
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struct saa7146_pci_extension_data *info,
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struct module *owner)
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{
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int ret = 0;
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struct budget_info *bi = info->ext_priv;
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int max_bufsize;
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int height_mask;
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memset(budget, 0, sizeof(struct budget));
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dprintk(2, "dev: %p, budget: %p\n", dev, budget);
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budget->card = bi;
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budget->dev = (struct saa7146_dev *) dev;
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if (budget->card->type == BUDGET_FS_ACTIVY) {
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budget->buffer_width = TS_WIDTH_ACTIVY;
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max_bufsize = TS_MAX_BUFSIZE_K_ACTIVY;
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height_mask = TS_HEIGHT_MASK_ACTIVY;
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} else {
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budget->buffer_width = TS_WIDTH;
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max_bufsize = TS_MAX_BUFSIZE_K;
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height_mask = TS_HEIGHT_MASK;
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}
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if (dma_buffer_size < TS_MIN_BUFSIZE_K)
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dma_buffer_size = TS_MIN_BUFSIZE_K;
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else if (dma_buffer_size > max_bufsize)
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dma_buffer_size = max_bufsize;
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budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width;
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budget->buffer_height &= height_mask;
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budget->buffer_size = budget->buffer_height * budget->buffer_width;
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budget->buffer_warning_threshold = budget->buffer_size * 80/100;
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budget->buffer_warnings = 0;
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budget->buffer_warning_time = jiffies;
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dprintk(2, "%s: width = %d, height = %d\n",
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budget->dev->name, budget->buffer_width, budget->buffer_height);
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printk("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size);
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if ((ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name, owner, &budget->dev->pci->dev)) < 0) {
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return ret;
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}
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/* set dd1 stream a & b */
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saa7146_write(dev, DD1_STREAM_B, 0x00000000);
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saa7146_write(dev, MC2, (MASK_09 | MASK_25));
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saa7146_write(dev, MC2, (MASK_10 | MASK_26));
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saa7146_write(dev, DD1_INIT, 0x02000000);
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saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
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if (bi->type != BUDGET_FS_ACTIVY)
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budget->video_port = BUDGET_VIDEO_PORTB;
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else
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budget->video_port = BUDGET_VIDEO_PORTA;
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spin_lock_init(&budget->feedlock);
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spin_lock_init(&budget->debilock);
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/* the Siemens DVB needs this if you want to have the i2c chips
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get recognized before the main driver is loaded */
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if (bi->type != BUDGET_FS_ACTIVY)
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saa7146_write(dev, GPIO_CTRL, 0x500000); /* GPIO 3 = 1 */
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#ifdef I2C_ADAP_CLASS_TV_DIGITAL
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budget->i2c_adap.class = I2C_ADAP_CLASS_TV_DIGITAL;
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#else
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budget->i2c_adap.class = I2C_CLASS_TV_DIGITAL;
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#endif
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strlcpy(budget->i2c_adap.name, budget->card->name, sizeof(budget->i2c_adap.name));
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saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120);
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strcpy(budget->i2c_adap.name, budget->card->name);
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if (i2c_add_adapter(&budget->i2c_adap) < 0) {
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dvb_unregister_adapter(&budget->dvb_adapter);
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return -ENOMEM;
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}
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ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac);
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if (NULL ==
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(budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt))) {
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ret = -ENOMEM;
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goto err;
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}
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saa7146_write(dev, PCI_BT_V1, 0x001c0000);
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/* upload all */
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saa7146_write(dev, GPIO_CTRL, 0x000000);
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tasklet_init(&budget->vpe_tasklet, vpeirq, (unsigned long) budget);
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/* frontend power on */
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if (bi->type != BUDGET_FS_ACTIVY)
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saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
|
|
|
|
if (budget_register(budget) == 0) {
|
|
return 0;
|
|
}
|
|
err:
|
|
i2c_del_adapter(&budget->i2c_adap);
|
|
|
|
vfree(budget->grabbing);
|
|
|
|
dvb_unregister_adapter(&budget->dvb_adapter);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int ttpci_budget_deinit(struct budget *budget)
|
|
{
|
|
struct saa7146_dev *dev = budget->dev;
|
|
|
|
dprintk(2, "budget: %p\n", budget);
|
|
|
|
budget_unregister(budget);
|
|
|
|
i2c_del_adapter(&budget->i2c_adap);
|
|
|
|
dvb_unregister_adapter(&budget->dvb_adapter);
|
|
|
|
tasklet_kill(&budget->vpe_tasklet);
|
|
|
|
saa7146_pgtable_free(dev->pci, &budget->pt);
|
|
|
|
vfree(budget->grabbing);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 * isr)
|
|
{
|
|
struct budget *budget = (struct budget *) dev->ext_priv;
|
|
|
|
dprintk(8, "dev: %p, budget: %p\n", dev, budget);
|
|
|
|
if (*isr & MASK_10)
|
|
tasklet_schedule(&budget->vpe_tasklet);
|
|
}
|
|
|
|
void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port)
|
|
{
|
|
struct budget *budget = (struct budget *) dev->ext_priv;
|
|
|
|
spin_lock(&budget->feedlock);
|
|
budget->video_port = video_port;
|
|
if (budget->feeding) {
|
|
int oldfeeding = budget->feeding;
|
|
budget->feeding = 1;
|
|
stop_ts_capture(budget);
|
|
start_ts_capture(budget);
|
|
budget->feeding = oldfeeding;
|
|
}
|
|
spin_unlock(&budget->feedlock);
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(ttpci_budget_debiread);
|
|
EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite);
|
|
EXPORT_SYMBOL_GPL(ttpci_budget_init);
|
|
EXPORT_SYMBOL_GPL(ttpci_budget_deinit);
|
|
EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
|
|
EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
|
|
EXPORT_SYMBOL_GPL(budget_debug);
|
|
|
|
MODULE_LICENSE("GPL");
|