From 98d109f90fc02ce8baf1c2471ffcf8d66fb0d8e6 Mon Sep 17 00:00:00 2001 From: Andy Walls Date: Mon, 19 Jul 2010 00:41:41 -0300 Subject: [PATCH] V4L/DVB: cx23885: Add preliminary IR Rx support for the HVR-1250 and TeVii S470 Add initial IR Rx support using the intergrated IR controller in the A/V core of the CX23885 bridge chip. This initial support is flawed in that I2C transactions should not be performed in a hard irq context. That will be fixed in a follow on patch. The TeVii S470 support is reported to generate perptual interrupts that renders a user' system nearly unusable. The TeVii S470 IR will be disabled by default in a follow on patch. Signed-off-by: Andy Walls Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/cx23885/cx23885-cards.c | 52 +++++++++++++++++++-- drivers/media/video/cx23885/cx23885-core.c | 22 +++++++-- drivers/media/video/cx23885/cx23885-input.c | 46 +++++++++++++++++- drivers/media/video/cx23885/cx23885-reg.h | 1 + 4 files changed, 111 insertions(+), 10 deletions(-) diff --git a/drivers/media/video/cx23885/cx23885-cards.c b/drivers/media/video/cx23885/cx23885-cards.c index b083e5dfb715..294a7530caf7 100644 --- a/drivers/media/video/cx23885/cx23885-cards.c +++ b/drivers/media/video/cx23885/cx23885-cards.c @@ -962,7 +962,7 @@ void cx23885_gpio_setup(struct cx23885_dev *dev) int cx23885_ir_init(struct cx23885_dev *dev) { - static struct v4l2_subdev_io_pin_config ir_pin_cfg[] = { + static struct v4l2_subdev_io_pin_config ir_rxtx_pin_cfg[] = { { .flags = V4L2_SUBDEV_IO_PIN_INPUT, .pin = CX23885_PIN_IR_RX_GPIO19, @@ -977,12 +977,22 @@ int cx23885_ir_init(struct cx23885_dev *dev) .strength = CX25840_PIN_DRIVE_MEDIUM, } }; - const size_t ir_pin_cfg_count = ARRAY_SIZE(ir_pin_cfg); + const size_t ir_rxtx_pin_cfg_count = ARRAY_SIZE(ir_rxtx_pin_cfg); + + static struct v4l2_subdev_io_pin_config ir_rx_pin_cfg[] = { + { + .flags = V4L2_SUBDEV_IO_PIN_INPUT, + .pin = CX23885_PIN_IR_RX_GPIO19, + .function = CX23885_PAD_IR_RX, + .value = 0, + .strength = CX25840_PIN_DRIVE_MEDIUM, + } + }; + const size_t ir_rx_pin_cfg_count = ARRAY_SIZE(ir_rx_pin_cfg); struct v4l2_subdev_ir_parameters params; int ret = 0; switch (dev->board) { - case CX23885_BOARD_HAUPPAUGE_HVR1250: case CX23885_BOARD_HAUPPAUGE_HVR1500: case CX23885_BOARD_HAUPPAUGE_HVR1500Q: case CX23885_BOARD_HAUPPAUGE_HVR1800: @@ -1001,7 +1011,7 @@ int cx23885_ir_init(struct cx23885_dev *dev) break; dev->sd_ir = cx23885_find_hw(dev, CX23885_HW_888_IR); v4l2_subdev_call(dev->sd_cx25840, core, s_io_pin_config, - ir_pin_cfg_count, ir_pin_cfg); + ir_rxtx_pin_cfg_count, ir_rxtx_pin_cfg); dev->pci_irqmask |= PCI_MSK_IR; /* * For these boards we need to invert the Tx output via the @@ -1015,6 +1025,26 @@ int cx23885_ir_init(struct cx23885_dev *dev) params.shutdown = true; v4l2_subdev_call(dev->sd_ir, ir, tx_s_parameters, ¶ms); break; + case CX23885_BOARD_TEVII_S470: + dev->sd_ir = cx23885_find_hw(dev, CX23885_HW_AV_CORE); + if (dev->sd_ir == NULL) { + ret = -ENODEV; + break; + } + v4l2_subdev_call(dev->sd_cx25840, core, s_io_pin_config, + ir_rx_pin_cfg_count, ir_rx_pin_cfg); + dev->pci_irqmask |= PCI_MSK_AV_CORE; + break; + case CX23885_BOARD_HAUPPAUGE_HVR1250: + dev->sd_ir = cx23885_find_hw(dev, CX23885_HW_AV_CORE); + if (dev->sd_ir == NULL) { + ret = -ENODEV; + break; + } + v4l2_subdev_call(dev->sd_cx25840, core, s_io_pin_config, + ir_rxtx_pin_cfg_count, ir_rxtx_pin_cfg); + dev->pci_irqmask |= PCI_MSK_AV_CORE; + break; case CX23885_BOARD_DVICO_FUSIONHDTV_DVB_T_DUAL_EXP: request_module("ir-kbd-i2c"); break; @@ -1033,6 +1063,13 @@ void cx23885_ir_fini(struct cx23885_dev *dev) cx23888_ir_remove(dev); dev->sd_ir = NULL; break; + case CX23885_BOARD_TEVII_S470: + case CX23885_BOARD_HAUPPAUGE_HVR1250: + dev->pci_irqmask &= ~PCI_MSK_AV_CORE; + cx_clear(PCI_INT_MSK, PCI_MSK_AV_CORE); + /* sd_ir is a duplicate pointer to the AV Core, just clear it */ + dev->sd_ir = NULL; + break; } } @@ -1044,6 +1081,11 @@ void cx23885_ir_pci_int_enable(struct cx23885_dev *dev) if (dev->sd_ir && (dev->pci_irqmask & PCI_MSK_IR)) cx_set(PCI_INT_MSK, PCI_MSK_IR); break; + case CX23885_BOARD_TEVII_S470: + case CX23885_BOARD_HAUPPAUGE_HVR1250: + if (dev->sd_ir && (dev->pci_irqmask & PCI_MSK_AV_CORE)) + cx_set(PCI_INT_MSK, PCI_MSK_AV_CORE); + break; } } @@ -1189,6 +1231,8 @@ void cx23885_card_setup(struct cx23885_dev *dev) case CX23885_BOARD_MAGICPRO_PROHDTVE2: case CX23885_BOARD_HAUPPAUGE_HVR1290: case CX23885_BOARD_LEADTEK_WINFAST_PXTV1200: + case CX23885_BOARD_TEVII_S470: + case CX23885_BOARD_HAUPPAUGE_HVR1250: dev->sd_cx25840 = v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_bus[2].i2c_adap, "cx25840", "cx25840", 0x88 >> 1, NULL); diff --git a/drivers/media/video/cx23885/cx23885-core.c b/drivers/media/video/cx23885/cx23885-core.c index a74c0ab859ed..93e7afb98889 100644 --- a/drivers/media/video/cx23885/cx23885-core.c +++ b/drivers/media/video/cx23885/cx23885-core.c @@ -1650,7 +1650,7 @@ static irqreturn_t cx23885_irq(int irq, void *dev_id) u32 ts1_status, ts1_mask; u32 ts2_status, ts2_mask; int vida_count = 0, ts1_count = 0, ts2_count = 0, handled = 0; - bool ir_handled = false; + bool subdev_handled; pci_status = cx_read(PCI_INT_STAT); pci_mask = cx_read(PCI_INT_MSK); @@ -1681,7 +1681,7 @@ static irqreturn_t cx23885_irq(int irq, void *dev_id) PCI_MSK_VID_C | PCI_MSK_VID_B | PCI_MSK_VID_A | PCI_MSK_AUD_INT | PCI_MSK_AUD_EXT | PCI_MSK_GPIO0 | PCI_MSK_GPIO1 | - PCI_MSK_IR)) { + PCI_MSK_AV_CORE | PCI_MSK_IR)) { if (pci_status & PCI_MSK_RISC_RD) dprintk(7, " (PCI_MSK_RISC_RD 0x%08x)\n", @@ -1731,6 +1731,10 @@ static irqreturn_t cx23885_irq(int irq, void *dev_id) dprintk(7, " (PCI_MSK_GPIO1 0x%08x)\n", PCI_MSK_GPIO1); + if (pci_status & PCI_MSK_AV_CORE) + dprintk(7, " (PCI_MSK_AV_CORE 0x%08x)\n", + PCI_MSK_AV_CORE); + if (pci_status & PCI_MSK_IR) dprintk(7, " (PCI_MSK_IR 0x%08x)\n", PCI_MSK_IR); @@ -1765,9 +1769,19 @@ static irqreturn_t cx23885_irq(int irq, void *dev_id) handled += cx23885_video_irq(dev, vida_status); if (pci_status & PCI_MSK_IR) { + subdev_handled = false; v4l2_subdev_call(dev->sd_ir, core, interrupt_service_routine, - pci_status, &ir_handled); - if (ir_handled) + pci_status, &subdev_handled); + if (subdev_handled) + handled++; + } + + if (pci_status & PCI_MSK_AV_CORE) { + subdev_handled = false; + v4l2_subdev_call(dev->sd_cx25840, + core, interrupt_service_routine, + pci_status, &subdev_handled); + if (subdev_handled) handled++; } diff --git a/drivers/media/video/cx23885/cx23885-input.c b/drivers/media/video/cx23885/cx23885-input.c index 496d751ffdc8..3f924e21b957 100644 --- a/drivers/media/video/cx23885/cx23885-input.c +++ b/drivers/media/video/cx23885/cx23885-input.c @@ -99,8 +99,10 @@ void cx23885_input_rx_work_handler(struct cx23885_dev *dev, u32 events) switch (dev->board) { case CX23885_BOARD_HAUPPAUGE_HVR1850: case CX23885_BOARD_HAUPPAUGE_HVR1290: + case CX23885_BOARD_TEVII_S470: + case CX23885_BOARD_HAUPPAUGE_HVR1250: /* - * The only board we handle right now. However other boards + * The only boards we handle right now. However other boards * using the CX2388x integrated IR controller should be similar */ break; @@ -148,6 +150,7 @@ static int cx23885_input_ir_start(struct cx23885_dev *dev) switch (dev->board) { case CX23885_BOARD_HAUPPAUGE_HVR1850: case CX23885_BOARD_HAUPPAUGE_HVR1290: + case CX23885_BOARD_HAUPPAUGE_HVR1250: /* * The IR controller on this board only returns pulse widths. * Any other mode setting will fail to set up the device. @@ -172,6 +175,37 @@ static int cx23885_input_ir_start(struct cx23885_dev *dev) */ params.invert_level = true; break; + case CX23885_BOARD_TEVII_S470: + /* + * The IR controller on this board only returns pulse widths. + * Any other mode setting will fail to set up the device. + */ + params.mode = V4L2_SUBDEV_IR_MODE_PULSE_WIDTH; + params.enable = true; + params.interrupt_enable = true; + params.shutdown = false; + + /* Setup for a standard NEC protocol */ + params.carrier_freq = 37917; /* Hz, 455 kHz/12 for NEC */ + params.carrier_range_lower = 33000; /* Hz */ + params.carrier_range_upper = 43000; /* Hz */ + params.duty_cycle = 33; /* percent, 33 percent for NEC */ + + /* + * NEC max pulse width: (64/3)/(455 kHz/12) * 16 nec_units + * (64/3)/(455 kHz/12) * 16 nec_units * 1.375 = 12378022 ns + */ + params.max_pulse_width = 12378022; /* ns */ + + /* + * NEC noise filter min width: (64/3)/(455 kHz/12) * 1 nec_unit + * (64/3)/(455 kHz/12) * 1 nec_units * 0.625 = 351648 ns + */ + params.noise_filter_min_width = 351648; /* ns */ + + params.modulation = false; + params.invert_level = true; + break; } v4l2_subdev_call(dev->sd_ir, ir, rx_s_parameters, ¶ms); return 0; @@ -244,12 +278,20 @@ int cx23885_input_init(struct cx23885_dev *dev) switch (dev->board) { case CX23885_BOARD_HAUPPAUGE_HVR1850: case CX23885_BOARD_HAUPPAUGE_HVR1290: - /* Integrated CX23888 IR controller */ + case CX23885_BOARD_HAUPPAUGE_HVR1250: + /* Integrated CX2388[58] IR controller */ driver_type = RC_DRIVER_IR_RAW; allowed_protos = IR_TYPE_ALL; /* The grey Hauppauge RC-5 remote */ rc_map = RC_MAP_RC5_HAUPPAUGE_NEW; break; + case CX23885_BOARD_TEVII_S470: + /* Integrated CX23885 IR controller */ + driver_type = RC_DRIVER_IR_RAW; + allowed_protos = IR_TYPE_ALL; + /* A guess at the remote */ + rc_map = RC_MAP_TEVII_NEC; + break; default: return -ENODEV; } diff --git a/drivers/media/video/cx23885/cx23885-reg.h b/drivers/media/video/cx23885/cx23885-reg.h index c0bc9a068954..a28772db11f0 100644 --- a/drivers/media/video/cx23885/cx23885-reg.h +++ b/drivers/media/video/cx23885/cx23885-reg.h @@ -213,6 +213,7 @@ Channel manager Data Structure entry = 20 DWORD #define DEV_CNTRL2 0x00040000 #define PCI_MSK_IR (1 << 28) +#define PCI_MSK_AV_CORE (1 << 27) #define PCI_MSK_GPIO1 (1 << 24) #define PCI_MSK_GPIO0 (1 << 23) #define PCI_MSK_APB_DMA (1 << 12) -- 2.20.1