projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| c942fddf | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| f59ad611 AW |
2 | /* |
| 3 | * Driver for the Conexant CX23885/7/8 PCIe bridge | |
| 4 | * | |
| 5 | * Infrared device support routines - non-input, non-vl42_subdev routines | |
| 6 | * | |
| 6afdeaf8 | 7 | * Copyright (C) 2009 Andy Walls <awalls@md.metrocast.net> |
| f59ad611 AW |
8 | */ |
| 9 | ||
| f59ad611 | 10 | #include "cx23885.h" |
| ada73eee | 11 | #include "cx23885-ir.h" |
| dbda8f70 | 12 | #include "cx23885-input.h" |
| f59ad611 | 13 | |
| e39682b5 MCC |
14 | #include <media/v4l2-device.h> |
| 15 | ||
| f59ad611 AW |
16 | #define CX23885_IR_RX_FIFO_SERVICE_REQ 0 |
| 17 | #define CX23885_IR_RX_END_OF_RX_DETECTED 1 | |
| 18 | #define CX23885_IR_RX_HW_FIFO_OVERRUN 2 | |
| 19 | #define CX23885_IR_RX_SW_FIFO_OVERRUN 3 | |
| 20 | ||
| 21 | #define CX23885_IR_TX_FIFO_SERVICE_REQ 0 | |
| 22 | ||
| 23 | ||
| 24 | void cx23885_ir_rx_work_handler(struct work_struct *work) | |
| 25 | { | |
| 26 | struct cx23885_dev *dev = | |
| 27 | container_of(work, struct cx23885_dev, ir_rx_work); | |
| 28 | u32 events = 0; | |
| 29 | unsigned long *notifications = &dev->ir_rx_notifications; | |
| 30 | ||
| 31 | if (test_and_clear_bit(CX23885_IR_RX_SW_FIFO_OVERRUN, notifications)) | |
| 32 | events |= V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN; | |
| 33 | if (test_and_clear_bit(CX23885_IR_RX_HW_FIFO_OVERRUN, notifications)) | |
| 34 | events |= V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN; | |
| 35 | if (test_and_clear_bit(CX23885_IR_RX_END_OF_RX_DETECTED, notifications)) | |
| 36 | events |= V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED; | |
| 37 | if (test_and_clear_bit(CX23885_IR_RX_FIFO_SERVICE_REQ, notifications)) | |
| 38 | events |= V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ; | |
| 39 | ||
| 40 | if (events == 0) | |
| 41 | return; | |
| dbda8f70 | 42 | |
| 43c24078 | 43 | if (dev->kernel_ir) |
| dbda8f70 | 44 | cx23885_input_rx_work_handler(dev, events); |
| f59ad611 AW |
45 | } |
| 46 | ||
| 47 | void cx23885_ir_tx_work_handler(struct work_struct *work) | |
| 48 | { | |
| 49 | struct cx23885_dev *dev = | |
| 50 | container_of(work, struct cx23885_dev, ir_tx_work); | |
| 51 | u32 events = 0; | |
| 52 | unsigned long *notifications = &dev->ir_tx_notifications; | |
| 53 | ||
| 54 | if (test_and_clear_bit(CX23885_IR_TX_FIFO_SERVICE_REQ, notifications)) | |
| 55 | events |= V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ; | |
| 56 | ||
| 57 | if (events == 0) | |
| 58 | return; | |
| 59 | ||
| 60 | } | |
| 61 | ||
| e5514f10 | 62 | /* Possibly called in an IRQ context */ |
| f59ad611 AW |
63 | void cx23885_ir_rx_v4l2_dev_notify(struct v4l2_subdev *sd, u32 events) |
| 64 | { | |
| 65 | struct cx23885_dev *dev = to_cx23885(sd->v4l2_dev); | |
| 66 | unsigned long *notifications = &dev->ir_rx_notifications; | |
| 67 | ||
| 68 | if (events & V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ) | |
| 69 | set_bit(CX23885_IR_RX_FIFO_SERVICE_REQ, notifications); | |
| 70 | if (events & V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED) | |
| 71 | set_bit(CX23885_IR_RX_END_OF_RX_DETECTED, notifications); | |
| 72 | if (events & V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN) | |
| 73 | set_bit(CX23885_IR_RX_HW_FIFO_OVERRUN, notifications); | |
| 74 | if (events & V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN) | |
| 75 | set_bit(CX23885_IR_RX_SW_FIFO_OVERRUN, notifications); | |
| e5514f10 AW |
76 | |
| 77 | /* | |
| 78 | * For the integrated AV core, we are already in a workqueue context. | |
| 79 | * For the CX23888 integrated IR, we are in an interrupt context. | |
| 80 | */ | |
| 81 | if (sd == dev->sd_cx25840) | |
| 82 | cx23885_ir_rx_work_handler(&dev->ir_rx_work); | |
| 83 | else | |
| 84 | schedule_work(&dev->ir_rx_work); | |
| f59ad611 AW |
85 | } |
| 86 | ||
| e5514f10 | 87 | /* Possibly called in an IRQ context */ |
| f59ad611 AW |
88 | void cx23885_ir_tx_v4l2_dev_notify(struct v4l2_subdev *sd, u32 events) |
| 89 | { | |
| 90 | struct cx23885_dev *dev = to_cx23885(sd->v4l2_dev); | |
| 91 | unsigned long *notifications = &dev->ir_tx_notifications; | |
| 92 | ||
| 93 | if (events & V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ) | |
| 94 | set_bit(CX23885_IR_TX_FIFO_SERVICE_REQ, notifications); | |
| e5514f10 AW |
95 | |
| 96 | /* | |
| 97 | * For the integrated AV core, we are already in a workqueue context. | |
| 98 | * For the CX23888 integrated IR, we are in an interrupt context. | |
| 99 | */ | |
| 100 | if (sd == dev->sd_cx25840) | |
| 101 | cx23885_ir_tx_work_handler(&dev->ir_tx_work); | |
| 102 | else | |
| 103 | schedule_work(&dev->ir_tx_work); | |
| f59ad611 | 104 | } |