1 files changed, 602 insertions, 0 deletions

diff --git a/drivers/media/pci/ttpci/budget-core.c b/drivers/media/pci/ttpci/budget-core.c
new file mode 100644
index 000000000000..37d02fe09137
--- /dev/null
+++ b/drivers/media/pci/ttpci/budget-core.c
@@ -0,0 +1,602 @@
+/*
+ * budget-core.c: driver for the SAA7146 based Budget DVB cards
+ *
+ * Compiled from various sources by Michael Hunold <michael@mihu.de>
+ *
+ * Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de>
+ *
+ * Copyright (C) 1999-2002 Ralph  Metzler
+ *			 & Marcus Metzler for convergence integrated media GmbH
+ *
+ * 26feb2004 Support for FS Activy Card (Grundig tuner) by
+ *	     Michael Dreher <michael@5dot1.de>,
+ *	     Oliver Endriss <o.endriss@gmx.de>,
+ *	     Andreas 'randy' Weinberger
+ *
+ * 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.
+ * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
+ *
+ *
+ * the project's page is at http://www.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;
+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, fe_status_t *status)
+{
+	struct budget *budget = (struct 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(unsigned long data)
+{
+	struct budget *budget = (struct budget *) data;
+	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 */
+	pci_dma_sync_sg_for_cpu(budget->dev->pci, budget->pt.slist, budget->pt.nents, PCI_DMA_FROMDEVICE);
+
+	/* 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)) {
+		printk("%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;
+	}
+}
+
+
+int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count,
+			  int uselocks, int nobusyloop)
+{
+	struct saa7146_dev *saa = budget->dev;
+	int result = 0;
+	unsigned long flags = 0;
+
+	if (count > 4 || count <= 0)
+		return 0;
+
+	if (uselocks)
+		spin_lock_irqsave(&budget->debilock, flags);
+
+	if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
+		if (uselocks)
+			spin_unlock_irqrestore(&budget->debilock, flags);
+		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);
+
+	if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
+		if (uselocks)
+			spin_unlock_irqrestore(&budget->debilock, flags);
+		return result;
+	}
+
+	result = saa7146_read(saa, DEBI_AD);
+	result &= (0xffffffffUL >> ((4 - count) * 8));
+
+	if (uselocks)
+		spin_unlock_irqrestore(&budget->debilock, flags);
+
+	return result;
+}
+
+int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr,
+			   int count, u32 value, int uselocks, int nobusyloop)
+{
+	struct saa7146_dev *saa = budget->dev;
+	unsigned long flags = 0;
+	int result;
+
+	if (count > 4 || count <= 0)
+		return 0;
+
+	if (uselocks)
+		spin_lock_irqsave(&budget->debilock, flags);
+
+	if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
+		if (uselocks)
+			spin_unlock_irqrestore(&budget->debilock, flags);
+		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);
+
+	if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
+		if (uselocks)
+			spin_unlock_irqrestore(&budget->debilock, flags);
+		return result;
+	}
+
+	if (uselocks)
+		spin_unlock_irqrestore(&budget->debilock, flags);
+	return 0;
+}
+
+
+/****************************************************************************
+ * DVB API SECTION
+ ****************************************************************************/
+
+static int budget_start_feed(struct dvb_demux_feed *feed)
+{
+	struct dvb_demux *demux = feed->demux;
+	struct budget *budget = (struct 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 = 0; /* 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 = (struct 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)
+		return ret;
+
+	budget->mem_frontend.source = DMX_MEMORY_FE;
+	ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);
+	if (ret < 0)
+		return ret;
+
+	ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);
+	if (ret < 0)
+		return ret;
+
+	dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);
+
+	return 0;
+}
+
+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);
+	printk("%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 */
+
+	strlcpy(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);
+	strcpy(budget->i2c_adap.name, budget->card->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 (NULL == budget->grabbing) {
+		ret = -ENOMEM;
+		goto err_del_i2c;
+	}
+
+	saa7146_write(dev, PCI_BT_V1, 0x001c0000);
+	/* upload all */
+	saa7146_write(dev, GPIO_CTRL, 0x000000);
+
+	tasklet_init(&budget->vpe_tasklet, vpeirq, (unsigned long) budget);
+
+	/* frontend power on */
+	if (bi->type != BUDGET_FS_ACTIVY)
+		saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
+
+	if ((ret = budget_register(budget)) == 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;
+}
+
+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;
+	}
+}
+
+int ttpci_budget_deinit(struct budget *budget)
+{
+	struct saa7146_dev *dev = budget->dev;
+
+	dprintk(2, "budget: %p\n", budget);
+
+	budget_unregister(budget);
+
+	tasklet_kill(&budget->vpe_tasklet);
+
+	saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);
+
+	i2c_del_adapter(&budget->i2c_adap);
+
+	dvb_unregister_adapter(&budget->dvb_adapter);
+
+	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) {
+		stop_ts_capture(budget);
+		start_ts_capture(budget);
+	}
+	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_init_hooks);
+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");