Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 588 insertions, 0 deletions

diff --git a/drivers/media/dvb/bt8xx/bt878.c b/drivers/media/dvb/bt8xx/bt878.c
new file mode 100644
index 000000000000..213ff7902024
--- /dev/null
+++ b/drivers/media/dvb/bt8xx/bt878.c
@@ -0,0 +1,588 @@
+/*
+ * bt878.c: part of the driver for the Pinnacle PCTV Sat DVB PCI card
+ *
+ * Copyright (C) 2002 Peter Hettkamp <peter.hettkamp@t-online.de>
+ *
+ * large parts based on the bttv driver
+ * Copyright (C) 1996,97,98 Ralph  Metzler (rjkm@thp.uni-koeln.de)
+ *                        & Marcus Metzler (mocm@thp.uni-koeln.de)
+ * (c) 1999,2000 Gerd Knorr <kraxel@goldbach.in-berlin.de>
+ *
+ * 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
+ * 
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <asm/io.h>
+#include <linux/ioport.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/kmod.h>
+#include <linux/vmalloc.h>
+#include <linux/init.h>
+
+#include "dmxdev.h"
+#include "dvbdev.h"
+#include "bt878.h"
+#include "dst_priv.h"
+
+
+/**************************************/
+/* Miscellaneous utility  definitions */
+/**************************************/
+
+static unsigned int bt878_verbose = 1;
+static unsigned int bt878_debug;
+
+module_param_named(verbose, bt878_verbose, int, 0444);
+MODULE_PARM_DESC(verbose,
+                 "verbose startup messages, default is 1 (yes)");
+module_param_named(debug, bt878_debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
+
+int bt878_num;
+struct bt878 bt878[BT878_MAX];
+
+EXPORT_SYMBOL(bt878_debug);
+EXPORT_SYMBOL(bt878_verbose);
+EXPORT_SYMBOL(bt878_num);
+EXPORT_SYMBOL(bt878);
+
+#define btwrite(dat,adr)    bmtwrite((dat), (bt->bt878_mem+(adr)))
+#define btread(adr)         bmtread(bt->bt878_mem+(adr))
+
+#define btand(dat,adr)      btwrite((dat) & btread(adr), adr)
+#define btor(dat,adr)       btwrite((dat) | btread(adr), adr)
+#define btaor(dat,mask,adr) btwrite((dat) | ((mask) & btread(adr)), adr)
+
+#if defined(dprintk)
+#undef dprintk
+#endif
+#define dprintk if(bt878_debug) printk
+
+static void bt878_mem_free(struct bt878 *bt)
+{
+        if (bt->buf_cpu) {
+                pci_free_consistent(bt->dev, bt->buf_size, bt->buf_cpu,
+                                    bt->buf_dma);
+                bt->buf_cpu = NULL;
+        }
+
+        if (bt->risc_cpu) {
+                pci_free_consistent(bt->dev, bt->risc_size, bt->risc_cpu,
+                                    bt->risc_dma);
+                bt->risc_cpu = NULL;
+        }
+}
+
+static int bt878_mem_alloc(struct bt878 *bt)
+{
+        if (!bt->buf_cpu) {
+                bt->buf_size = 128 * 1024;
+
+                bt->buf_cpu =
+                    pci_alloc_consistent(bt->dev, bt->buf_size,
+                                         &bt->buf_dma);
+
+                if (!bt->buf_cpu)
+                        return -ENOMEM;
+
+                memset(bt->buf_cpu, 0, bt->buf_size);
+        }
+
+        if (!bt->risc_cpu) {
+                bt->risc_size = PAGE_SIZE;
+                bt->risc_cpu =
+                    pci_alloc_consistent(bt->dev, bt->risc_size,
+                                         &bt->risc_dma);
+
+                if (!bt->risc_cpu) {
+                        bt878_mem_free(bt);
+                        return -ENOMEM;
+                }
+
+                memset(bt->risc_cpu, 0, bt->risc_size);
+        }
+
+        return 0;
+}
+
+/* RISC instructions */
+#define RISC_WRITE              (0x01 << 28)
+#define RISC_JUMP               (0x07 << 28)
+#define RISC_SYNC               (0x08 << 28)
+
+/* RISC bits */
+#define RISC_WR_SOL             (1 << 27)
+#define RISC_WR_EOL             (1 << 26)
+#define RISC_IRQ                (1 << 24)
+#define RISC_STATUS(status)     ((((~status) & 0x0F) << 20) | ((status & 0x0F) << 16))
+#define RISC_SYNC_RESYNC        (1 << 15)
+#define RISC_SYNC_FM1           0x06
+#define RISC_SYNC_VRO           0x0C
+
+#define RISC_FLUSH()            bt->risc_pos = 0
+#define RISC_INSTR(instr)       bt->risc_cpu[bt->risc_pos++] = cpu_to_le32(instr)
+
+static int bt878_make_risc(struct bt878 *bt)
+{
+        bt->block_bytes = bt->buf_size >> 4;
+        bt->block_count = 1 << 4;
+        bt->line_bytes = bt->block_bytes;
+        bt->line_count = bt->block_count;
+
+        while (bt->line_bytes > 4095) {
+                bt->line_bytes >>= 1;
+                bt->line_count <<= 1;
+        }
+
+        if (bt->line_count > 255) {
+                printk("bt878: buffer size error!\n");
+                return -EINVAL;
+        }
+        return 0;
+}
+
+
+static void bt878_risc_program(struct bt878 *bt, u32 op_sync_orin)
+{
+        u32 buf_pos = 0;
+        u32 line;
+
+        RISC_FLUSH();
+        RISC_INSTR(RISC_SYNC | RISC_SYNC_FM1 | op_sync_orin);
+        RISC_INSTR(0);
+
+        dprintk("bt878: risc len lines %u, bytes per line %u\n", 
+                        bt->line_count, bt->line_bytes);
+        for (line = 0; line < bt->line_count; line++) {
+                // At the beginning of every block we issue an IRQ with previous (finished) block number set
+                if (!(buf_pos % bt->block_bytes))
+                        RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL |
+                                   RISC_IRQ |
+                                   RISC_STATUS(((buf_pos /
+                                                 bt->block_bytes) +
+                                                (bt->block_count -
+                                                 1)) %
+                                               bt->block_count) | bt->
+                                   line_bytes);
+                else
+                        RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL |
+                                   bt->line_bytes);
+                RISC_INSTR(bt->buf_dma + buf_pos);
+                buf_pos += bt->line_bytes;
+        }
+
+        RISC_INSTR(RISC_SYNC | op_sync_orin | RISC_SYNC_VRO);
+        RISC_INSTR(0);
+
+        RISC_INSTR(RISC_JUMP);
+        RISC_INSTR(bt->risc_dma);
+
+        btwrite((bt->line_count << 16) | bt->line_bytes, BT878_APACK_LEN);
+}
+
+/*****************************/
+/* Start/Stop grabbing funcs */
+/*****************************/
+
+void bt878_start(struct bt878 *bt, u32 controlreg, u32 op_sync_orin,
+                u32 irq_err_ignore)
+{
+        u32 int_mask;
+
+        dprintk("bt878 debug: bt878_start (ctl=%8.8x)\n", controlreg);
+        /* complete the writing of the risc dma program now we have
+         * the card specifics
+         */
+        bt878_risc_program(bt, op_sync_orin);
+        controlreg &= ~0x1f;
+        controlreg |= 0x1b;
+
+        btwrite(cpu_to_le32(bt->risc_dma), BT878_ARISC_START);
+
+        /* original int mask had :
+         *    6    2    8    4    0
+         * 1111 1111 1000 0000 0000
+         * SCERR|OCERR|PABORT|RIPERR|FDSR|FTRGT|FBUS|RISCI
+         * Hacked for DST to:
+         * SCERR | OCERR | FDSR | FTRGT | FBUS | RISCI
+         */
+        int_mask = BT878_ASCERR | BT878_AOCERR | BT878_APABORT | 
+                BT878_ARIPERR | BT878_APPERR | BT878_AFDSR | BT878_AFTRGT | 
+                BT878_AFBUS | BT878_ARISCI;
+
+
+        /* ignore pesky bits */
+        int_mask &= ~irq_err_ignore;
+        
+        btwrite(int_mask, BT878_AINT_MASK);
+        btwrite(controlreg, BT878_AGPIO_DMA_CTL);
+}
+
+void bt878_stop(struct bt878 *bt)
+{
+        u32 stat;
+        int i = 0;
+
+        dprintk("bt878 debug: bt878_stop\n");
+
+        btwrite(0, BT878_AINT_MASK);
+        btand(~0x13, BT878_AGPIO_DMA_CTL);
+
+        do {
+                stat = btread(BT878_AINT_STAT);
+                if (!(stat & BT878_ARISC_EN))
+                        break;
+                i++;
+        } while (i < 500);
+
+        dprintk("bt878(%d) debug: bt878_stop, i=%d, stat=0x%8.8x\n",
+                bt->nr, i, stat);
+}
+
+EXPORT_SYMBOL(bt878_start);
+EXPORT_SYMBOL(bt878_stop);
+
+/*****************************/
+/* Interrupt service routine */
+/*****************************/
+
+static irqreturn_t bt878_irq(int irq, void *dev_id, struct pt_regs *regs)
+{
+        u32 stat, astat, mask;
+        int count;
+        struct bt878 *bt;
+
+        bt = (struct bt878 *) dev_id;
+
+        count = 0;
+        while (1) {
+                stat = btread(BT878_AINT_STAT);
+                mask = btread(BT878_AINT_MASK);
+                if (!(astat = (stat & mask)))
+                        return IRQ_NONE;        /* this interrupt is not for me */
+/*              dprintk("bt878(%d) debug: irq count %d, stat 0x%8.8x, mask 0x%8.8x\n",bt->nr,count,stat,mask); */
+                btwrite(astat, BT878_AINT_STAT);        /* try to clear interupt condition */
+
+
+                if (astat & (BT878_ASCERR | BT878_AOCERR)) {
+                        if (bt878_verbose) {
+                                printk("bt878(%d): irq%s%s risc_pc=%08x\n",
+                                       bt->nr,
+                                       (astat & BT878_ASCERR) ? " SCERR" :
+                                       "",
+                                       (astat & BT878_AOCERR) ? " OCERR" :
+                                       "", btread(BT878_ARISC_PC));
+                        }
+                }
+                if (astat & (BT878_APABORT | BT878_ARIPERR | BT878_APPERR)) {
+                        if (bt878_verbose) {
+                                printk
+                                    ("bt878(%d): irq%s%s%s risc_pc=%08x\n",
+                                     bt->nr,
+                                     (astat & BT878_APABORT) ? " PABORT" :
+                                     "",
+                                     (astat & BT878_ARIPERR) ? " RIPERR" :
+                                     "",
+                                     (astat & BT878_APPERR) ? " PPERR" :
+                                     "", btread(BT878_ARISC_PC));
+                        }
+                }
+                if (astat & (BT878_AFDSR | BT878_AFTRGT | BT878_AFBUS)) {
+                        if (bt878_verbose) {
+                                printk
+                                    ("bt878(%d): irq%s%s%s risc_pc=%08x\n",
+                                     bt->nr,
+                                     (astat & BT878_AFDSR) ? " FDSR" : "",
+                                     (astat & BT878_AFTRGT) ? " FTRGT" :
+                                     "",
+                                     (astat & BT878_AFBUS) ? " FBUS" : "",
+                                     btread(BT878_ARISC_PC));
+                        }
+                }
+                if (astat & BT878_ARISCI) {
+                        bt->finished_block = (stat & BT878_ARISCS) >> 28;
+                        tasklet_schedule(&bt->tasklet);
+                        break;
+                }
+                count++;
+                if (count > 20) {
+                        btwrite(0, BT878_AINT_MASK);
+                        printk(KERN_ERR
+                               "bt878(%d): IRQ lockup, cleared int mask\n",
+                               bt->nr);
+                        break;
+                }
+        }
+        return IRQ_HANDLED;
+}
+
+int
+bt878_device_control(struct bt878 *bt, unsigned int cmd, union dst_gpio_packet *mp)
+{
+        int retval;
+
+        retval = 0;
+        if (down_interruptible (&bt->gpio_lock))
+                return -ERESTARTSYS;
+        /* special gpio signal */
+        switch (cmd) {
+            case DST_IG_ENABLE:
+                // dprintk("dvb_bt8xx: dst enable mask 0x%02x enb 0x%02x \n", mp->dstg.enb.mask, mp->dstg.enb.enable);
+                retval = bttv_gpio_enable(bt->bttv_nr,
+                                mp->enb.mask,
+                                mp->enb.enable);
+                break;
+            case DST_IG_WRITE:
+                // dprintk("dvb_bt8xx: dst write gpio mask 0x%02x out 0x%02x\n", mp->dstg.outp.mask, mp->dstg.outp.highvals);
+                retval = bttv_write_gpio(bt->bttv_nr,
+                                mp->outp.mask,
+                                mp->outp.highvals);
+
+                break;
+            case DST_IG_READ:
+                /* read */
+                retval =  bttv_read_gpio(bt->bttv_nr, &mp->rd.value);
+                // dprintk("dvb_bt8xx: dst read gpio 0x%02x\n", (unsigned)mp->dstg.rd.value);
+                break;
+            case DST_IG_TS:
+                /* Set packet size */
+                bt->TS_Size = mp->psize;
+                break;
+
+            default:
+                retval = -EINVAL;
+                break;
+        }
+        up(&bt->gpio_lock);
+        return retval;
+}
+
+EXPORT_SYMBOL(bt878_device_control);
+
+/***********************/
+/* PCI device handling */
+/***********************/
+
+static int __devinit bt878_probe(struct pci_dev *dev,
+                                 const struct pci_device_id *pci_id)
+{
+        int result;
+        unsigned char lat;
+        struct bt878 *bt;
+#if defined(__powerpc__)
+        unsigned int cmd;
+#endif
+
+        printk(KERN_INFO "bt878: Bt878 AUDIO function found (%d).\n",
+               bt878_num);
+        if (pci_enable_device(dev))
+                return -EIO;
+
+        bt = &bt878[bt878_num];
+        bt->dev = dev;
+        bt->nr = bt878_num;
+        bt->shutdown = 0;
+
+        bt->id = dev->device;
+        bt->irq = dev->irq;
+        bt->bt878_adr = pci_resource_start(dev, 0);
+        if (!request_mem_region(pci_resource_start(dev, 0),
+                                pci_resource_len(dev, 0), "bt878")) {
+                result = -EBUSY;
+                goto fail0;
+        }
+
+        pci_read_config_byte(dev, PCI_CLASS_REVISION, &bt->revision);
+        pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
+        printk(KERN_INFO "bt878(%d): Bt%x (rev %d) at %02x:%02x.%x, ",
+               bt878_num, bt->id, bt->revision, dev->bus->number,
+               PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
+        printk("irq: %d, latency: %d, memory: 0x%lx\n",
+               bt->irq, lat, bt->bt878_adr);
+
+
+#if defined(__powerpc__)
+        /* on OpenFirmware machines (PowerMac at least), PCI memory cycle */
+        /* response on cards with no firmware is not enabled by OF */
+        pci_read_config_dword(dev, PCI_COMMAND, &cmd);
+        cmd = (cmd | PCI_COMMAND_MEMORY);
+        pci_write_config_dword(dev, PCI_COMMAND, cmd);
+#endif
+
+#ifdef __sparc__
+        bt->bt878_mem = (unsigned char *) bt->bt878_adr;
+#else
+        bt->bt878_mem = ioremap(bt->bt878_adr, 0x1000);
+#endif
+
+        /* clear interrupt mask */
+        btwrite(0, BT848_INT_MASK);
+
+        result = request_irq(bt->irq, bt878_irq,
+                             SA_SHIRQ | SA_INTERRUPT, "bt878",
+                             (void *) bt);
+        if (result == -EINVAL) {
+                printk(KERN_ERR "bt878(%d): Bad irq number or handler\n",
+                       bt878_num);
+                goto fail1;
+        }
+        if (result == -EBUSY) {
+                printk(KERN_ERR
+                       "bt878(%d): IRQ %d busy, change your PnP config in BIOS\n",
+                       bt878_num, bt->irq);
+                goto fail1;
+        }
+        if (result < 0)
+                goto fail1;
+
+        pci_set_master(dev);
+        pci_set_drvdata(dev, bt);
+
+/*        if(init_bt878(btv) < 0) {
+                bt878_remove(dev);
+                return -EIO;
+        }
+*/
+
+        if ((result = bt878_mem_alloc(bt))) {
+                printk("bt878: failed to allocate memory!\n");
+                goto fail2;
+        }
+
+        bt878_make_risc(bt);
+        btwrite(0, BT878_AINT_MASK);
+        bt878_num++;
+
+        return 0;
+
+      fail2:
+        free_irq(bt->irq, bt);
+      fail1:
+        release_mem_region(pci_resource_start(bt->dev, 0),
+                           pci_resource_len(bt->dev, 0));
+      fail0:
+        pci_disable_device(dev);
+        return result;
+}
+
+static void __devexit bt878_remove(struct pci_dev *pci_dev)
+{
+        u8 command;
+        struct bt878 *bt = pci_get_drvdata(pci_dev);
+
+        if (bt878_verbose)
+                printk("bt878(%d): unloading\n", bt->nr);
+
+        /* turn off all capturing, DMA and IRQs */
+        btand(~0x13, BT878_AGPIO_DMA_CTL);
+
+        /* first disable interrupts before unmapping the memory! */
+        btwrite(0, BT878_AINT_MASK);
+        btwrite(~0U, BT878_AINT_STAT);
+
+        /* disable PCI bus-mastering */
+        pci_read_config_byte(bt->dev, PCI_COMMAND, &command);
+        /* Should this be &=~ ?? */
+        command &= ~PCI_COMMAND_MASTER;
+        pci_write_config_byte(bt->dev, PCI_COMMAND, command);
+
+        free_irq(bt->irq, bt);
+        printk(KERN_DEBUG "bt878_mem: 0x%p.\n", bt->bt878_mem);
+        if (bt->bt878_mem)
+                iounmap(bt->bt878_mem);
+
+        release_mem_region(pci_resource_start(bt->dev, 0),
+                           pci_resource_len(bt->dev, 0));
+        /* wake up any waiting processes
+           because shutdown flag is set, no new processes (in this queue)
+           are expected
+         */
+        bt->shutdown = 1;
+        bt878_mem_free(bt);
+
+        pci_set_drvdata(pci_dev, NULL);
+        pci_disable_device(pci_dev);
+        return;
+}
+
+static struct pci_device_id bt878_pci_tbl[] __devinitdata = {
+        {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BROOKTREE_878,
+         PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+        {0,}
+};
+
+MODULE_DEVICE_TABLE(pci, bt878_pci_tbl);
+
+static struct pci_driver bt878_pci_driver = {
+      .name     = "bt878",
+      .id_table = bt878_pci_tbl,
+      .probe    = bt878_probe,
+      .remove   = bt878_remove,
+};
+
+static int bt878_pci_driver_registered = 0;
+
+/*******************************/
+/* Module management functions */
+/*******************************/
+
+static int bt878_init_module(void)
+{
+        bt878_num = 0;
+        bt878_pci_driver_registered = 0;
+
+        printk(KERN_INFO "bt878: AUDIO driver version %d.%d.%d loaded\n",
+               (BT878_VERSION_CODE >> 16) & 0xff,
+               (BT878_VERSION_CODE >> 8) & 0xff,
+               BT878_VERSION_CODE & 0xff);
+/*
+        bt878_check_chipset();
+*/
+        /* later we register inside of bt878_find_audio_dma()
+         * because we may want to ignore certain cards */
+        bt878_pci_driver_registered = 1;
+        return pci_register_driver(&bt878_pci_driver);
+}
+
+static void bt878_cleanup_module(void)
+{
+        if (bt878_pci_driver_registered) {
+                bt878_pci_driver_registered = 0;
+                pci_unregister_driver(&bt878_pci_driver);
+        }
+        return;
+}
+
+module_init(bt878_init_module);
+module_exit(bt878_cleanup_module);
+
+//MODULE_AUTHOR("XXX");
+MODULE_LICENSE("GPL");
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */