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804 lines
20 KiB
804 lines
20 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* |
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* Support for the mpeg transport stream transfers |
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* PCI function #2 of the cx2388x. |
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* |
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* (c) 2004 Jelle Foks <[email protected]> |
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* (c) 2004 Chris Pascoe <[email protected]> |
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* (c) 2004 Gerd Knorr <[email protected]> |
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*/ |
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#include "cx88.h" |
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#include <linux/module.h> |
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#include <linux/slab.h> |
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#include <linux/init.h> |
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#include <linux/device.h> |
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#include <linux/dma-mapping.h> |
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#include <linux/interrupt.h> |
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#include <linux/delay.h> |
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/* ------------------------------------------------------------------ */ |
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MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards"); |
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MODULE_AUTHOR("Jelle Foks <[email protected]>"); |
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MODULE_AUTHOR("Chris Pascoe <[email protected]>"); |
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MODULE_AUTHOR("Gerd Knorr <[email protected]> [SuSE Labs]"); |
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MODULE_LICENSE("GPL"); |
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MODULE_VERSION(CX88_VERSION); |
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static unsigned int debug; |
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module_param(debug, int, 0644); |
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MODULE_PARM_DESC(debug, "enable debug messages [mpeg]"); |
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#define dprintk(level, fmt, arg...) do { \ |
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if (debug + 1 > level) \ |
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printk(KERN_DEBUG pr_fmt("%s: mpeg:" fmt), \ |
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__func__, ##arg); \ |
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} while (0) |
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#if defined(CONFIG_MODULES) && defined(MODULE) |
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static void request_module_async(struct work_struct *work) |
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{ |
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struct cx8802_dev *dev = container_of(work, struct cx8802_dev, |
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request_module_wk); |
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if (dev->core->board.mpeg & CX88_MPEG_DVB) |
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request_module("cx88-dvb"); |
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if (dev->core->board.mpeg & CX88_MPEG_BLACKBIRD) |
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request_module("cx88-blackbird"); |
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} |
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static void request_modules(struct cx8802_dev *dev) |
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{ |
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INIT_WORK(&dev->request_module_wk, request_module_async); |
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schedule_work(&dev->request_module_wk); |
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} |
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static void flush_request_modules(struct cx8802_dev *dev) |
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{ |
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flush_work(&dev->request_module_wk); |
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} |
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#else |
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#define request_modules(dev) |
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#define flush_request_modules(dev) |
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#endif /* CONFIG_MODULES */ |
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static LIST_HEAD(cx8802_devlist); |
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static DEFINE_MUTEX(cx8802_mutex); |
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/* ------------------------------------------------------------------ */ |
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int cx8802_start_dma(struct cx8802_dev *dev, |
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struct cx88_dmaqueue *q, |
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struct cx88_buffer *buf) |
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{ |
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struct cx88_core *core = dev->core; |
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dprintk(1, "w: %d, h: %d, f: %d\n", |
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core->width, core->height, core->field); |
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/* setup fifo + format */ |
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cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28], |
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dev->ts_packet_size, buf->risc.dma); |
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/* write TS length to chip */ |
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cx_write(MO_TS_LNGTH, dev->ts_packet_size); |
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/* |
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* FIXME: this needs a review. |
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* also: move to cx88-blackbird + cx88-dvb source files? |
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*/ |
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dprintk(1, "core->active_type_id = 0x%08x\n", core->active_type_id); |
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if ((core->active_type_id == CX88_MPEG_DVB) && |
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(core->board.mpeg & CX88_MPEG_DVB)) { |
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dprintk(1, "cx8802_start_dma doing .dvb\n"); |
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/* negedge driven & software reset */ |
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cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl); |
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udelay(100); |
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cx_write(MO_PINMUX_IO, 0x00); |
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cx_write(TS_HW_SOP_CNTRL, 0x47 << 16 | 188 << 4 | 0x01); |
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switch (core->boardnr) { |
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case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q: |
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case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T: |
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case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD: |
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case CX88_BOARD_PCHDTV_HD5500: |
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cx_write(TS_SOP_STAT, 1 << 13); |
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break; |
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case CX88_BOARD_SAMSUNG_SMT_7020: |
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cx_write(TS_SOP_STAT, 0x00); |
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break; |
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case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1: |
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case CX88_BOARD_HAUPPAUGE_NOVASE2_S1: |
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/* Enable MPEG parallel IO and video signal pins */ |
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cx_write(MO_PINMUX_IO, 0x88); |
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udelay(100); |
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break; |
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case CX88_BOARD_HAUPPAUGE_HVR1300: |
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/* Enable MPEG parallel IO and video signal pins */ |
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cx_write(MO_PINMUX_IO, 0x88); |
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cx_write(TS_SOP_STAT, 0); |
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cx_write(TS_VALERR_CNTRL, 0); |
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break; |
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case CX88_BOARD_PINNACLE_PCTV_HD_800i: |
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/* Enable MPEG parallel IO and video signal pins */ |
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cx_write(MO_PINMUX_IO, 0x88); |
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cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4)); |
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dev->ts_gen_cntrl = 5; |
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cx_write(TS_SOP_STAT, 0); |
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cx_write(TS_VALERR_CNTRL, 0); |
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udelay(100); |
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break; |
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default: |
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cx_write(TS_SOP_STAT, 0x00); |
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break; |
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} |
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cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl); |
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udelay(100); |
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} else if ((core->active_type_id == CX88_MPEG_BLACKBIRD) && |
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(core->board.mpeg & CX88_MPEG_BLACKBIRD)) { |
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dprintk(1, "cx8802_start_dma doing .blackbird\n"); |
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cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */ |
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/* punctured clock TS & posedge driven & software reset */ |
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cx_write(TS_GEN_CNTRL, 0x46); |
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udelay(100); |
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cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */ |
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cx_write(TS_VALERR_CNTRL, 0x2000); |
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/* punctured clock TS & posedge driven */ |
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cx_write(TS_GEN_CNTRL, 0x06); |
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udelay(100); |
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} else { |
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pr_err("%s() Failed. Unsupported value in .mpeg (0x%08x)\n", |
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__func__, core->board.mpeg); |
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return -EINVAL; |
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} |
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/* reset counter */ |
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cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET); |
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q->count = 0; |
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/* enable irqs */ |
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dprintk(1, "setting the interrupt mask\n"); |
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cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT); |
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cx_set(MO_TS_INTMSK, 0x1f0011); |
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/* start dma */ |
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cx_set(MO_DEV_CNTRL2, (1 << 5)); |
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cx_set(MO_TS_DMACNTRL, 0x11); |
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return 0; |
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} |
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EXPORT_SYMBOL(cx8802_start_dma); |
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static int cx8802_stop_dma(struct cx8802_dev *dev) |
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{ |
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struct cx88_core *core = dev->core; |
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dprintk(1, "\n"); |
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/* stop dma */ |
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cx_clear(MO_TS_DMACNTRL, 0x11); |
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/* disable irqs */ |
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cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT); |
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cx_clear(MO_TS_INTMSK, 0x1f0011); |
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/* Reset the controller */ |
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cx_write(TS_GEN_CNTRL, 0xcd); |
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return 0; |
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} |
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static int cx8802_restart_queue(struct cx8802_dev *dev, |
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struct cx88_dmaqueue *q) |
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{ |
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struct cx88_buffer *buf; |
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dprintk(1, "\n"); |
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if (list_empty(&q->active)) |
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return 0; |
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buf = list_entry(q->active.next, struct cx88_buffer, list); |
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dprintk(2, "restart_queue [%p/%d]: restart dma\n", |
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buf, buf->vb.vb2_buf.index); |
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cx8802_start_dma(dev, q, buf); |
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return 0; |
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} |
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/* ------------------------------------------------------------------ */ |
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int cx8802_buf_prepare(struct vb2_queue *q, struct cx8802_dev *dev, |
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struct cx88_buffer *buf) |
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{ |
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int size = dev->ts_packet_size * dev->ts_packet_count; |
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struct sg_table *sgt = vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0); |
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struct cx88_riscmem *risc = &buf->risc; |
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int rc; |
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if (vb2_plane_size(&buf->vb.vb2_buf, 0) < size) |
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return -EINVAL; |
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vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size); |
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rc = cx88_risc_databuffer(dev->pci, risc, sgt->sgl, |
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dev->ts_packet_size, dev->ts_packet_count, 0); |
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if (rc) { |
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if (risc->cpu) |
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pci_free_consistent(dev->pci, risc->size, |
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risc->cpu, risc->dma); |
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memset(risc, 0, sizeof(*risc)); |
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return rc; |
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} |
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return 0; |
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} |
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EXPORT_SYMBOL(cx8802_buf_prepare); |
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void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf) |
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{ |
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struct cx88_buffer *prev; |
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struct cx88_dmaqueue *cx88q = &dev->mpegq; |
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dprintk(1, "\n"); |
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/* add jump to start */ |
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buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 8); |
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buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC); |
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buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 8); |
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if (list_empty(&cx88q->active)) { |
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dprintk(1, "queue is empty - first active\n"); |
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list_add_tail(&buf->list, &cx88q->active); |
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dprintk(1, "[%p/%d] %s - first active\n", |
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buf, buf->vb.vb2_buf.index, __func__); |
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} else { |
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buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1); |
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dprintk(1, "queue is not empty - append to active\n"); |
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prev = list_entry(cx88q->active.prev, struct cx88_buffer, list); |
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list_add_tail(&buf->list, &cx88q->active); |
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prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma); |
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dprintk(1, "[%p/%d] %s - append to active\n", |
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buf, buf->vb.vb2_buf.index, __func__); |
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} |
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} |
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EXPORT_SYMBOL(cx8802_buf_queue); |
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/* ----------------------------------------------------------- */ |
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static void do_cancel_buffers(struct cx8802_dev *dev) |
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{ |
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struct cx88_dmaqueue *q = &dev->mpegq; |
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struct cx88_buffer *buf; |
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unsigned long flags; |
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spin_lock_irqsave(&dev->slock, flags); |
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while (!list_empty(&q->active)) { |
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buf = list_entry(q->active.next, struct cx88_buffer, list); |
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list_del(&buf->list); |
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vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); |
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} |
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spin_unlock_irqrestore(&dev->slock, flags); |
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} |
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void cx8802_cancel_buffers(struct cx8802_dev *dev) |
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{ |
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dprintk(1, "\n"); |
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cx8802_stop_dma(dev); |
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do_cancel_buffers(dev); |
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} |
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EXPORT_SYMBOL(cx8802_cancel_buffers); |
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static const char *cx88_mpeg_irqs[32] = { |
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"ts_risci1", NULL, NULL, NULL, |
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"ts_risci2", NULL, NULL, NULL, |
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"ts_oflow", NULL, NULL, NULL, |
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"ts_sync", NULL, NULL, NULL, |
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"opc_err", "par_err", "rip_err", "pci_abort", |
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"ts_err?", |
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}; |
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static void cx8802_mpeg_irq(struct cx8802_dev *dev) |
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{ |
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struct cx88_core *core = dev->core; |
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u32 status, mask, count; |
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dprintk(1, "\n"); |
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status = cx_read(MO_TS_INTSTAT); |
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mask = cx_read(MO_TS_INTMSK); |
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if (0 == (status & mask)) |
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return; |
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cx_write(MO_TS_INTSTAT, status); |
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if (debug || (status & mask & ~0xff)) |
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cx88_print_irqbits("irq mpeg ", |
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cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs), |
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status, mask); |
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/* risc op code error */ |
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if (status & (1 << 16)) { |
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pr_warn("mpeg risc op code error\n"); |
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cx_clear(MO_TS_DMACNTRL, 0x11); |
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cx88_sram_channel_dump(dev->core, |
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&cx88_sram_channels[SRAM_CH28]); |
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} |
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/* risc1 y */ |
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if (status & 0x01) { |
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dprintk(1, "wake up\n"); |
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spin_lock(&dev->slock); |
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count = cx_read(MO_TS_GPCNT); |
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cx88_wakeup(dev->core, &dev->mpegq, count); |
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spin_unlock(&dev->slock); |
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} |
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/* other general errors */ |
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if (status & 0x1f0100) { |
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dprintk(0, "general errors: 0x%08x\n", status & 0x1f0100); |
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spin_lock(&dev->slock); |
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cx8802_stop_dma(dev); |
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spin_unlock(&dev->slock); |
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} |
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} |
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#define MAX_IRQ_LOOP 10 |
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static irqreturn_t cx8802_irq(int irq, void *dev_id) |
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{ |
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struct cx8802_dev *dev = dev_id; |
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struct cx88_core *core = dev->core; |
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u32 status; |
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int loop, handled = 0; |
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for (loop = 0; loop < MAX_IRQ_LOOP; loop++) { |
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status = cx_read(MO_PCI_INTSTAT) & |
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(core->pci_irqmask | PCI_INT_TSINT); |
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if (status == 0) |
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goto out; |
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dprintk(1, "cx8802_irq\n"); |
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dprintk(1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP); |
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dprintk(1, " status: %d\n", status); |
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handled = 1; |
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cx_write(MO_PCI_INTSTAT, status); |
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if (status & core->pci_irqmask) |
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cx88_core_irq(core, status); |
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if (status & PCI_INT_TSINT) |
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cx8802_mpeg_irq(dev); |
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} |
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if (loop == MAX_IRQ_LOOP) { |
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dprintk(0, "clearing mask\n"); |
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pr_warn("irq loop -- clearing mask\n"); |
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cx_write(MO_PCI_INTMSK, 0); |
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} |
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out: |
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return IRQ_RETVAL(handled); |
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} |
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static int cx8802_init_common(struct cx8802_dev *dev) |
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{ |
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struct cx88_core *core = dev->core; |
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int err; |
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/* pci init */ |
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if (pci_enable_device(dev->pci)) |
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return -EIO; |
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pci_set_master(dev->pci); |
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err = pci_set_dma_mask(dev->pci, DMA_BIT_MASK(32)); |
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if (err) { |
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pr_err("Oops: no 32bit PCI DMA ???\n"); |
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return -EIO; |
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} |
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dev->pci_rev = dev->pci->revision; |
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pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat); |
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pr_info("found at %s, rev: %d, irq: %d, latency: %d, mmio: 0x%llx\n", |
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pci_name(dev->pci), dev->pci_rev, dev->pci->irq, |
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dev->pci_lat, |
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(unsigned long long)pci_resource_start(dev->pci, 0)); |
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/* initialize driver struct */ |
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spin_lock_init(&dev->slock); |
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/* init dma queue */ |
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INIT_LIST_HEAD(&dev->mpegq.active); |
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/* get irq */ |
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err = request_irq(dev->pci->irq, cx8802_irq, |
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IRQF_SHARED, dev->core->name, dev); |
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if (err < 0) { |
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pr_err("can't get IRQ %d\n", dev->pci->irq); |
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return err; |
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} |
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cx_set(MO_PCI_INTMSK, core->pci_irqmask); |
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/* everything worked */ |
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pci_set_drvdata(dev->pci, dev); |
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return 0; |
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} |
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static void cx8802_fini_common(struct cx8802_dev *dev) |
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{ |
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dprintk(2, "\n"); |
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cx8802_stop_dma(dev); |
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pci_disable_device(dev->pci); |
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/* unregister stuff */ |
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free_irq(dev->pci->irq, dev); |
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} |
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/* ----------------------------------------------------------- */ |
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static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state) |
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{ |
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struct cx8802_dev *dev = pci_get_drvdata(pci_dev); |
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unsigned long flags; |
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/* stop mpeg dma */ |
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spin_lock_irqsave(&dev->slock, flags); |
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if (!list_empty(&dev->mpegq.active)) { |
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dprintk(2, "suspend\n"); |
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pr_info("suspend mpeg\n"); |
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cx8802_stop_dma(dev); |
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} |
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spin_unlock_irqrestore(&dev->slock, flags); |
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/* FIXME -- shutdown device */ |
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cx88_shutdown(dev->core); |
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pci_save_state(pci_dev); |
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if (pci_set_power_state(pci_dev, |
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pci_choose_state(pci_dev, state)) != 0) { |
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pci_disable_device(pci_dev); |
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dev->state.disabled = 1; |
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} |
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return 0; |
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} |
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static int cx8802_resume_common(struct pci_dev *pci_dev) |
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{ |
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struct cx8802_dev *dev = pci_get_drvdata(pci_dev); |
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unsigned long flags; |
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int err; |
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if (dev->state.disabled) { |
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err = pci_enable_device(pci_dev); |
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if (err) { |
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pr_err("can't enable device\n"); |
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return err; |
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} |
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dev->state.disabled = 0; |
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} |
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err = pci_set_power_state(pci_dev, PCI_D0); |
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if (err) { |
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pr_err("can't enable device\n"); |
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pci_disable_device(pci_dev); |
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dev->state.disabled = 1; |
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return err; |
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} |
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pci_restore_state(pci_dev); |
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/* FIXME: re-initialize hardware */ |
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cx88_reset(dev->core); |
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/* restart video+vbi capture */ |
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spin_lock_irqsave(&dev->slock, flags); |
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if (!list_empty(&dev->mpegq.active)) { |
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pr_info("resume mpeg\n"); |
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cx8802_restart_queue(dev, &dev->mpegq); |
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} |
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spin_unlock_irqrestore(&dev->slock, flags); |
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return 0; |
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} |
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struct cx8802_driver *cx8802_get_driver(struct cx8802_dev *dev, |
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enum cx88_board_type btype) |
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{ |
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struct cx8802_driver *d; |
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list_for_each_entry(d, &dev->drvlist, drvlist) |
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if (d->type_id == btype) |
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return d; |
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return NULL; |
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} |
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EXPORT_SYMBOL(cx8802_get_driver); |
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|
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/* Driver asked for hardware access. */ |
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static int cx8802_request_acquire(struct cx8802_driver *drv) |
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{ |
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struct cx88_core *core = drv->core; |
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unsigned int i; |
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|
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/* Fail a request for hardware if the device is busy. */ |
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if (core->active_type_id != CX88_BOARD_NONE && |
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core->active_type_id != drv->type_id) |
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return -EBUSY; |
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|
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if (drv->type_id == CX88_MPEG_DVB) { |
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/* When switching to DVB, always set the input to the tuner */ |
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core->last_analog_input = core->input; |
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core->input = 0; |
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for (i = 0; |
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i < ARRAY_SIZE(core->board.input); |
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i++) { |
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if (core->board.input[i].type == CX88_VMUX_DVB) { |
|
core->input = i; |
|
break; |
|
} |
|
} |
|
} |
|
|
|
if (drv->advise_acquire) { |
|
core->active_ref++; |
|
if (core->active_type_id == CX88_BOARD_NONE) { |
|
core->active_type_id = drv->type_id; |
|
drv->advise_acquire(drv); |
|
} |
|
|
|
dprintk(1, "Post acquire GPIO=%x\n", cx_read(MO_GP0_IO)); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* Driver asked to release hardware. */ |
|
static int cx8802_request_release(struct cx8802_driver *drv) |
|
{ |
|
struct cx88_core *core = drv->core; |
|
|
|
if (drv->advise_release && --core->active_ref == 0) { |
|
if (drv->type_id == CX88_MPEG_DVB) { |
|
/* |
|
* If the DVB driver is releasing, reset the input |
|
* state to the last configured analog input |
|
*/ |
|
core->input = core->last_analog_input; |
|
} |
|
|
|
drv->advise_release(drv); |
|
core->active_type_id = CX88_BOARD_NONE; |
|
dprintk(1, "Post release GPIO=%x\n", cx_read(MO_GP0_IO)); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int cx8802_check_driver(struct cx8802_driver *drv) |
|
{ |
|
if (!drv) |
|
return -ENODEV; |
|
|
|
if ((drv->type_id != CX88_MPEG_DVB) && |
|
(drv->type_id != CX88_MPEG_BLACKBIRD)) |
|
return -EINVAL; |
|
|
|
if ((drv->hw_access != CX8802_DRVCTL_SHARED) && |
|
(drv->hw_access != CX8802_DRVCTL_EXCLUSIVE)) |
|
return -EINVAL; |
|
|
|
if ((!drv->probe) || |
|
(!drv->remove) || |
|
(!drv->advise_acquire) || |
|
(!drv->advise_release)) |
|
return -EINVAL; |
|
|
|
return 0; |
|
} |
|
|
|
int cx8802_register_driver(struct cx8802_driver *drv) |
|
{ |
|
struct cx8802_dev *dev; |
|
struct cx8802_driver *driver; |
|
int err, i = 0; |
|
|
|
pr_info("registering cx8802 driver, type: %s access: %s\n", |
|
drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird", |
|
drv->hw_access == CX8802_DRVCTL_SHARED ? |
|
"shared" : "exclusive"); |
|
|
|
err = cx8802_check_driver(drv); |
|
if (err) { |
|
pr_err("cx8802_driver is invalid\n"); |
|
return err; |
|
} |
|
|
|
mutex_lock(&cx8802_mutex); |
|
|
|
list_for_each_entry(dev, &cx8802_devlist, devlist) { |
|
pr_info("subsystem: %04x:%04x, board: %s [card=%d]\n", |
|
dev->pci->subsystem_vendor, |
|
dev->pci->subsystem_device, dev->core->board.name, |
|
dev->core->boardnr); |
|
|
|
/* Bring up a new struct for each driver instance */ |
|
driver = kzalloc(sizeof(*drv), GFP_KERNEL); |
|
if (!driver) { |
|
err = -ENOMEM; |
|
goto out; |
|
} |
|
|
|
/* Snapshot of the driver registration data */ |
|
drv->core = dev->core; |
|
drv->suspend = cx8802_suspend_common; |
|
drv->resume = cx8802_resume_common; |
|
drv->request_acquire = cx8802_request_acquire; |
|
drv->request_release = cx8802_request_release; |
|
memcpy(driver, drv, sizeof(*driver)); |
|
|
|
mutex_lock(&drv->core->lock); |
|
err = drv->probe(driver); |
|
if (err == 0) { |
|
i++; |
|
list_add_tail(&driver->drvlist, &dev->drvlist); |
|
} else { |
|
pr_err("cx8802 probe failed, err = %d\n", err); |
|
} |
|
mutex_unlock(&drv->core->lock); |
|
} |
|
|
|
err = i ? 0 : -ENODEV; |
|
out: |
|
mutex_unlock(&cx8802_mutex); |
|
return err; |
|
} |
|
EXPORT_SYMBOL(cx8802_register_driver); |
|
|
|
int cx8802_unregister_driver(struct cx8802_driver *drv) |
|
{ |
|
struct cx8802_dev *dev; |
|
struct cx8802_driver *d, *dtmp; |
|
int err = 0; |
|
|
|
pr_info("unregistering cx8802 driver, type: %s access: %s\n", |
|
drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird", |
|
drv->hw_access == CX8802_DRVCTL_SHARED ? |
|
"shared" : "exclusive"); |
|
|
|
mutex_lock(&cx8802_mutex); |
|
|
|
list_for_each_entry(dev, &cx8802_devlist, devlist) { |
|
pr_info("subsystem: %04x:%04x, board: %s [card=%d]\n", |
|
dev->pci->subsystem_vendor, |
|
dev->pci->subsystem_device, dev->core->board.name, |
|
dev->core->boardnr); |
|
|
|
mutex_lock(&dev->core->lock); |
|
|
|
list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) { |
|
/* only unregister the correct driver type */ |
|
if (d->type_id != drv->type_id) |
|
continue; |
|
|
|
err = d->remove(d); |
|
if (err == 0) { |
|
list_del(&d->drvlist); |
|
kfree(d); |
|
} else |
|
pr_err("cx8802 driver remove failed (%d)\n", |
|
err); |
|
} |
|
|
|
mutex_unlock(&dev->core->lock); |
|
} |
|
|
|
mutex_unlock(&cx8802_mutex); |
|
|
|
return err; |
|
} |
|
EXPORT_SYMBOL(cx8802_unregister_driver); |
|
|
|
/* ----------------------------------------------------------- */ |
|
static int cx8802_probe(struct pci_dev *pci_dev, |
|
const struct pci_device_id *pci_id) |
|
{ |
|
struct cx8802_dev *dev; |
|
struct cx88_core *core; |
|
int err; |
|
|
|
/* general setup */ |
|
core = cx88_core_get(pci_dev); |
|
if (!core) |
|
return -EINVAL; |
|
|
|
pr_info("cx2388x 8802 Driver Manager\n"); |
|
|
|
err = -ENODEV; |
|
if (!core->board.mpeg) |
|
goto fail_core; |
|
|
|
err = -ENOMEM; |
|
dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
|
if (!dev) |
|
goto fail_core; |
|
dev->pci = pci_dev; |
|
dev->core = core; |
|
|
|
/* Maintain a reference so cx88-video can query the 8802 device. */ |
|
core->dvbdev = dev; |
|
|
|
err = cx8802_init_common(dev); |
|
if (err != 0) |
|
goto fail_dev; |
|
|
|
INIT_LIST_HEAD(&dev->drvlist); |
|
mutex_lock(&cx8802_mutex); |
|
list_add_tail(&dev->devlist, &cx8802_devlist); |
|
mutex_unlock(&cx8802_mutex); |
|
|
|
/* now autoload cx88-dvb or cx88-blackbird */ |
|
request_modules(dev); |
|
return 0; |
|
|
|
fail_dev: |
|
kfree(dev); |
|
fail_core: |
|
core->dvbdev = NULL; |
|
cx88_core_put(core, pci_dev); |
|
return err; |
|
} |
|
|
|
static void cx8802_remove(struct pci_dev *pci_dev) |
|
{ |
|
struct cx8802_dev *dev; |
|
|
|
dev = pci_get_drvdata(pci_dev); |
|
|
|
dprintk(1, "%s\n", __func__); |
|
|
|
flush_request_modules(dev); |
|
|
|
mutex_lock(&dev->core->lock); |
|
|
|
if (!list_empty(&dev->drvlist)) { |
|
struct cx8802_driver *drv, *tmp; |
|
int err; |
|
|
|
pr_warn("Trying to remove cx8802 driver while cx8802 sub-drivers still loaded?!\n"); |
|
|
|
list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) { |
|
err = drv->remove(drv); |
|
if (err == 0) { |
|
list_del(&drv->drvlist); |
|
} else |
|
pr_err("cx8802 driver remove failed (%d)\n", |
|
err); |
|
kfree(drv); |
|
} |
|
} |
|
|
|
mutex_unlock(&dev->core->lock); |
|
|
|
/* Destroy any 8802 reference. */ |
|
dev->core->dvbdev = NULL; |
|
|
|
/* common */ |
|
cx8802_fini_common(dev); |
|
cx88_core_put(dev->core, dev->pci); |
|
kfree(dev); |
|
} |
|
|
|
static const struct pci_device_id cx8802_pci_tbl[] = { |
|
{ |
|
.vendor = 0x14f1, |
|
.device = 0x8802, |
|
.subvendor = PCI_ANY_ID, |
|
.subdevice = PCI_ANY_ID, |
|
}, { |
|
/* --- end of list --- */ |
|
} |
|
}; |
|
MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl); |
|
|
|
static struct pci_driver cx8802_pci_driver = { |
|
.name = "cx88-mpeg driver manager", |
|
.id_table = cx8802_pci_tbl, |
|
.probe = cx8802_probe, |
|
.remove = cx8802_remove, |
|
}; |
|
|
|
module_pci_driver(cx8802_pci_driver);
|
|
|