diff options
author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-06-14 16:35:57 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-13 23:30:06 -0300 |
commit | 25aee3debe0464f6c680173041fa3de30ec9ff54 (patch) | |
tree | e2b14f952a0831399f9cbb444cfb9c7980b6485b /drivers/media/dvb/b2c2/flexcop-pci.c | |
parent | 786baecfe78f8e25547c628b48a60fc8e5636056 (diff) | |
download | op-kernel-dev-25aee3debe0464f6c680173041fa3de30ec9ff54.zip op-kernel-dev-25aee3debe0464f6c680173041fa3de30ec9ff54.tar.gz |
[media] Rename media/dvb as media/pci
The remaining dvb drivers are pci, so rename them to match the
bus.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/b2c2/flexcop-pci.c')
-rw-r--r-- | drivers/media/dvb/b2c2/flexcop-pci.c | 450 |
1 files changed, 0 insertions, 450 deletions
diff --git a/drivers/media/dvb/b2c2/flexcop-pci.c b/drivers/media/dvb/b2c2/flexcop-pci.c deleted file mode 100644 index 44f8fb5..0000000 --- a/drivers/media/dvb/b2c2/flexcop-pci.c +++ /dev/null @@ -1,450 +0,0 @@ -/* - * Linux driver the digital TV devices equipped with B2C2 FlexcopII(b)/III - * flexcop-pci.c - covers the PCI part including DMA transfers - * see flexcop.c for copyright information - */ - -#define FC_LOG_PREFIX "flexcop-pci" -#include "flexcop-common.h" - -static int enable_pid_filtering = 1; -module_param(enable_pid_filtering, int, 0444); -MODULE_PARM_DESC(enable_pid_filtering, - "enable hardware pid filtering: supported values: 0 (fullts), 1"); - -static int irq_chk_intv = 100; -module_param(irq_chk_intv, int, 0644); -MODULE_PARM_DESC(irq_chk_intv, "set the interval for IRQ streaming watchdog."); - -#ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG -#define dprintk(level,args...) \ - do { if ((debug & level)) printk(args); } while (0) -#define DEBSTATUS "" -#else -#define dprintk(level,args...) -#define DEBSTATUS " (debugging is not enabled)" -#endif - -#define deb_info(args...) dprintk(0x01, args) -#define deb_reg(args...) dprintk(0x02, args) -#define deb_ts(args...) dprintk(0x04, args) -#define deb_irq(args...) dprintk(0x08, args) -#define deb_chk(args...) dprintk(0x10, args) - -static int debug; -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, - "set debug level (1=info,2=regs,4=TS,8=irqdma,16=check (|-able))." - DEBSTATUS); - -#define DRIVER_VERSION "0.1" -#define DRIVER_NAME "flexcop-pci" -#define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@desy.de>" - -struct flexcop_pci { - struct pci_dev *pdev; - -#define FC_PCI_INIT 0x01 -#define FC_PCI_DMA_INIT 0x02 - int init_state; - - void __iomem *io_mem; - u32 irq; - /* buffersize (at least for DMA1, need to be % 188 == 0, - * this logic is required */ -#define FC_DEFAULT_DMA1_BUFSIZE (1280 * 188) -#define FC_DEFAULT_DMA2_BUFSIZE (10 * 188) - struct flexcop_dma dma[2]; - - int active_dma1_addr; /* 0 = addr0 of dma1; 1 = addr1 of dma1 */ - u32 last_dma1_cur_pos; - /* position of the pointer last time the timer/packet irq occurred */ - int count; - int count_prev; - int stream_problem; - - spinlock_t irq_lock; - unsigned long last_irq; - - struct delayed_work irq_check_work; - struct flexcop_device *fc_dev; -}; - -static int lastwreg, lastwval, lastrreg, lastrval; - -static flexcop_ibi_value flexcop_pci_read_ibi_reg(struct flexcop_device *fc, - flexcop_ibi_register r) -{ - struct flexcop_pci *fc_pci = fc->bus_specific; - flexcop_ibi_value v; - v.raw = readl(fc_pci->io_mem + r); - - if (lastrreg != r || lastrval != v.raw) { - lastrreg = r; lastrval = v.raw; - deb_reg("new rd: %3x: %08x\n", r, v.raw); - } - - return v; -} - -static int flexcop_pci_write_ibi_reg(struct flexcop_device *fc, - flexcop_ibi_register r, flexcop_ibi_value v) -{ - struct flexcop_pci *fc_pci = fc->bus_specific; - - if (lastwreg != r || lastwval != v.raw) { - lastwreg = r; lastwval = v.raw; - deb_reg("new wr: %3x: %08x\n", r, v.raw); - } - - writel(v.raw, fc_pci->io_mem + r); - return 0; -} - -static void flexcop_pci_irq_check_work(struct work_struct *work) -{ - struct flexcop_pci *fc_pci = - container_of(work, struct flexcop_pci, irq_check_work.work); - struct flexcop_device *fc = fc_pci->fc_dev; - - if (fc->feedcount) { - - if (fc_pci->count == fc_pci->count_prev) { - deb_chk("no IRQ since the last check\n"); - if (fc_pci->stream_problem++ == 3) { - struct dvb_demux_feed *feed; - deb_info("flexcop-pci: stream problem, resetting pid filter\n"); - - spin_lock_irq(&fc->demux.lock); - list_for_each_entry(feed, &fc->demux.feed_list, - list_head) { - flexcop_pid_feed_control(fc, feed, 0); - } - - list_for_each_entry(feed, &fc->demux.feed_list, - list_head) { - flexcop_pid_feed_control(fc, feed, 1); - } - spin_unlock_irq(&fc->demux.lock); - - fc_pci->stream_problem = 0; - } - } else { - fc_pci->stream_problem = 0; - fc_pci->count_prev = fc_pci->count; - } - } - - schedule_delayed_work(&fc_pci->irq_check_work, - msecs_to_jiffies(irq_chk_intv < 100 ? 100 : irq_chk_intv)); -} - -/* When PID filtering is turned on, we use the timer IRQ, because small amounts - * of data need to be passed to the user space instantly as well. When PID - * filtering is turned off, we use the page-change-IRQ */ -static irqreturn_t flexcop_pci_isr(int irq, void *dev_id) -{ - struct flexcop_pci *fc_pci = dev_id; - struct flexcop_device *fc = fc_pci->fc_dev; - unsigned long flags; - flexcop_ibi_value v; - irqreturn_t ret = IRQ_HANDLED; - - spin_lock_irqsave(&fc_pci->irq_lock, flags); - v = fc->read_ibi_reg(fc, irq_20c); - - /* errors */ - if (v.irq_20c.Data_receiver_error) - deb_chk("data receiver error\n"); - if (v.irq_20c.Continuity_error_flag) - deb_chk("Contunuity error flag is set\n"); - if (v.irq_20c.LLC_SNAP_FLAG_set) - deb_chk("LLC_SNAP_FLAG_set is set\n"); - if (v.irq_20c.Transport_Error) - deb_chk("Transport error\n"); - - if ((fc_pci->count % 1000) == 0) - deb_chk("%d valid irq took place so far\n", fc_pci->count); - - if (v.irq_20c.DMA1_IRQ_Status == 1) { - if (fc_pci->active_dma1_addr == 0) - flexcop_pass_dmx_packets(fc_pci->fc_dev, - fc_pci->dma[0].cpu_addr0, - fc_pci->dma[0].size / 188); - else - flexcop_pass_dmx_packets(fc_pci->fc_dev, - fc_pci->dma[0].cpu_addr1, - fc_pci->dma[0].size / 188); - - deb_irq("page change to page: %d\n",!fc_pci->active_dma1_addr); - fc_pci->active_dma1_addr = !fc_pci->active_dma1_addr; - /* for the timer IRQ we only can use buffer dmx feeding, because we don't have - * complete TS packets when reading from the DMA memory */ - } else if (v.irq_20c.DMA1_Timer_Status == 1) { - dma_addr_t cur_addr = - fc->read_ibi_reg(fc,dma1_008).dma_0x8.dma_cur_addr << 2; - u32 cur_pos = cur_addr - fc_pci->dma[0].dma_addr0; - - deb_irq("%u irq: %08x cur_addr: %llx: cur_pos: %08x, " - "last_cur_pos: %08x ", - jiffies_to_usecs(jiffies - fc_pci->last_irq), - v.raw, (unsigned long long)cur_addr, cur_pos, - fc_pci->last_dma1_cur_pos); - fc_pci->last_irq = jiffies; - - /* buffer end was reached, restarted from the beginning - * pass the data from last_cur_pos to the buffer end to the demux - */ - if (cur_pos < fc_pci->last_dma1_cur_pos) { - deb_irq(" end was reached: passing %d bytes ", - (fc_pci->dma[0].size*2 - 1) - - fc_pci->last_dma1_cur_pos); - flexcop_pass_dmx_data(fc_pci->fc_dev, - fc_pci->dma[0].cpu_addr0 + - fc_pci->last_dma1_cur_pos, - (fc_pci->dma[0].size*2) - - fc_pci->last_dma1_cur_pos); - fc_pci->last_dma1_cur_pos = 0; - } - - if (cur_pos > fc_pci->last_dma1_cur_pos) { - deb_irq(" passing %d bytes ", - cur_pos - fc_pci->last_dma1_cur_pos); - flexcop_pass_dmx_data(fc_pci->fc_dev, - fc_pci->dma[0].cpu_addr0 + - fc_pci->last_dma1_cur_pos, - cur_pos - fc_pci->last_dma1_cur_pos); - } - deb_irq("\n"); - - fc_pci->last_dma1_cur_pos = cur_pos; - fc_pci->count++; - } else { - deb_irq("isr for flexcop called, " - "apparently without reason (%08x)\n", v.raw); - ret = IRQ_NONE; - } - - spin_unlock_irqrestore(&fc_pci->irq_lock, flags); - return ret; -} - -static int flexcop_pci_stream_control(struct flexcop_device *fc, int onoff) -{ - struct flexcop_pci *fc_pci = fc->bus_specific; - if (onoff) { - flexcop_dma_config(fc, &fc_pci->dma[0], FC_DMA_1); - flexcop_dma_config(fc, &fc_pci->dma[1], FC_DMA_2); - flexcop_dma_config_timer(fc, FC_DMA_1, 0); - flexcop_dma_xfer_control(fc, FC_DMA_1, - FC_DMA_SUBADDR_0 | FC_DMA_SUBADDR_1, 1); - deb_irq("DMA xfer enabled\n"); - - fc_pci->last_dma1_cur_pos = 0; - flexcop_dma_control_timer_irq(fc, FC_DMA_1, 1); - deb_irq("IRQ enabled\n"); - fc_pci->count_prev = fc_pci->count; - } else { - flexcop_dma_control_timer_irq(fc, FC_DMA_1, 0); - deb_irq("IRQ disabled\n"); - - flexcop_dma_xfer_control(fc, FC_DMA_1, - FC_DMA_SUBADDR_0 | FC_DMA_SUBADDR_1, 0); - deb_irq("DMA xfer disabled\n"); - } - return 0; -} - -static int flexcop_pci_dma_init(struct flexcop_pci *fc_pci) -{ - int ret; - ret = flexcop_dma_allocate(fc_pci->pdev, &fc_pci->dma[0], - FC_DEFAULT_DMA1_BUFSIZE); - if (ret != 0) - return ret; - - ret = flexcop_dma_allocate(fc_pci->pdev, &fc_pci->dma[1], - FC_DEFAULT_DMA2_BUFSIZE); - if (ret != 0) { - flexcop_dma_free(&fc_pci->dma[0]); - return ret; - } - - flexcop_sram_set_dest(fc_pci->fc_dev, FC_SRAM_DEST_MEDIA | - FC_SRAM_DEST_NET, FC_SRAM_DEST_TARGET_DMA1); - flexcop_sram_set_dest(fc_pci->fc_dev, FC_SRAM_DEST_CAO | - FC_SRAM_DEST_CAI, FC_SRAM_DEST_TARGET_DMA2); - fc_pci->init_state |= FC_PCI_DMA_INIT; - return ret; -} - -static void flexcop_pci_dma_exit(struct flexcop_pci *fc_pci) -{ - if (fc_pci->init_state & FC_PCI_DMA_INIT) { - flexcop_dma_free(&fc_pci->dma[0]); - flexcop_dma_free(&fc_pci->dma[1]); - } - fc_pci->init_state &= ~FC_PCI_DMA_INIT; -} - -static int flexcop_pci_init(struct flexcop_pci *fc_pci) -{ - int ret; - - info("card revision %x", fc_pci->pdev->revision); - - if ((ret = pci_enable_device(fc_pci->pdev)) != 0) - return ret; - pci_set_master(fc_pci->pdev); - - if ((ret = pci_request_regions(fc_pci->pdev, DRIVER_NAME)) != 0) - goto err_pci_disable_device; - - fc_pci->io_mem = pci_iomap(fc_pci->pdev, 0, 0x800); - - if (!fc_pci->io_mem) { - err("cannot map io memory\n"); - ret = -EIO; - goto err_pci_release_regions; - } - - pci_set_drvdata(fc_pci->pdev, fc_pci); - spin_lock_init(&fc_pci->irq_lock); - if ((ret = request_irq(fc_pci->pdev->irq, flexcop_pci_isr, - IRQF_SHARED, DRIVER_NAME, fc_pci)) != 0) - goto err_pci_iounmap; - - fc_pci->init_state |= FC_PCI_INIT; - return ret; - -err_pci_iounmap: - pci_iounmap(fc_pci->pdev, fc_pci->io_mem); - pci_set_drvdata(fc_pci->pdev, NULL); -err_pci_release_regions: - pci_release_regions(fc_pci->pdev); -err_pci_disable_device: - pci_disable_device(fc_pci->pdev); - return ret; -} - -static void flexcop_pci_exit(struct flexcop_pci *fc_pci) -{ - if (fc_pci->init_state & FC_PCI_INIT) { - free_irq(fc_pci->pdev->irq, fc_pci); - pci_iounmap(fc_pci->pdev, fc_pci->io_mem); - pci_set_drvdata(fc_pci->pdev, NULL); - pci_release_regions(fc_pci->pdev); - pci_disable_device(fc_pci->pdev); - } - fc_pci->init_state &= ~FC_PCI_INIT; -} - -static int flexcop_pci_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct flexcop_device *fc; - struct flexcop_pci *fc_pci; - int ret = -ENOMEM; - - if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_pci))) == NULL) { - err("out of memory\n"); - return -ENOMEM; - } - - /* general flexcop init */ - fc_pci = fc->bus_specific; - fc_pci->fc_dev = fc; - - fc->read_ibi_reg = flexcop_pci_read_ibi_reg; - fc->write_ibi_reg = flexcop_pci_write_ibi_reg; - fc->i2c_request = flexcop_i2c_request; - fc->get_mac_addr = flexcop_eeprom_check_mac_addr; - fc->stream_control = flexcop_pci_stream_control; - - if (enable_pid_filtering) - info("will use the HW PID filter."); - else - info("will pass the complete TS to the demuxer."); - - fc->pid_filtering = enable_pid_filtering; - fc->bus_type = FC_PCI; - fc->dev = &pdev->dev; - fc->owner = THIS_MODULE; - - /* bus specific part */ - fc_pci->pdev = pdev; - if ((ret = flexcop_pci_init(fc_pci)) != 0) - goto err_kfree; - - /* init flexcop */ - if ((ret = flexcop_device_initialize(fc)) != 0) - goto err_pci_exit; - - /* init dma */ - if ((ret = flexcop_pci_dma_init(fc_pci)) != 0) - goto err_fc_exit; - - INIT_DELAYED_WORK(&fc_pci->irq_check_work, flexcop_pci_irq_check_work); - - if (irq_chk_intv > 0) - schedule_delayed_work(&fc_pci->irq_check_work, - msecs_to_jiffies(irq_chk_intv < 100 ? - 100 : - irq_chk_intv)); - return ret; - -err_fc_exit: - flexcop_device_exit(fc); -err_pci_exit: - flexcop_pci_exit(fc_pci); -err_kfree: - flexcop_device_kfree(fc); - return ret; -} - -/* in theory every _exit function should be called exactly two times, - * here and in the bail-out-part of the _init-function - */ -static void flexcop_pci_remove(struct pci_dev *pdev) -{ - struct flexcop_pci *fc_pci = pci_get_drvdata(pdev); - - if (irq_chk_intv > 0) - cancel_delayed_work(&fc_pci->irq_check_work); - - flexcop_pci_dma_exit(fc_pci); - flexcop_device_exit(fc_pci->fc_dev); - flexcop_pci_exit(fc_pci); - flexcop_device_kfree(fc_pci->fc_dev); -} - -static struct pci_device_id flexcop_pci_tbl[] = { - { PCI_DEVICE(0x13d0, 0x2103) }, - { }, -}; - -MODULE_DEVICE_TABLE(pci, flexcop_pci_tbl); - -static struct pci_driver flexcop_pci_driver = { - .name = "b2c2_flexcop_pci", - .id_table = flexcop_pci_tbl, - .probe = flexcop_pci_probe, - .remove = flexcop_pci_remove, -}; - -static int __init flexcop_pci_module_init(void) -{ - return pci_register_driver(&flexcop_pci_driver); -} - -static void __exit flexcop_pci_module_exit(void) -{ - pci_unregister_driver(&flexcop_pci_driver); -} - -module_init(flexcop_pci_module_init); -module_exit(flexcop_pci_module_exit); - -MODULE_AUTHOR(DRIVER_AUTHOR); -MODULE_DESCRIPTION(DRIVER_NAME); -MODULE_LICENSE("GPL"); |