static void meson_ir_shutdown(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct device_node *node = dev->of_node; struct meson_ir *ir = platform_get_drvdata(pdev); unsigned long flags; spin_lock_irqsave(&ir->lock, flags); /* * Set operation mode to NEC/hardware decoding to give * bootloader a chance to power the system back on */ if (of_device_is_compatible(node, "amlogic,meson6-ir")) meson_ir_set_mask(ir, IR_DEC_REG1, REG1_MODE_MASK, DECODE_MODE_NEC << REG1_MODE_SHIFT); else meson_ir_set_mask(ir, IR_DEC_REG2, REG2_MODE_MASK, DECODE_MODE_NEC << REG2_MODE_SHIFT); /* Set rate to default value */ meson_ir_set_mask(ir, IR_DEC_REG0, REG0_RATE_MASK, 0x13); spin_unlock_irqrestore(&ir->lock, flags); }
static int meson_ir_remove(struct platform_device *pdev) { struct meson_ir *ir = platform_get_drvdata(pdev); unsigned long flags; /* Disable the decoder */ spin_lock_irqsave(&ir->lock, flags); meson_ir_set_mask(ir, IR_DEC_REG1, REG1_ENABLE, 0); spin_unlock_irqrestore(&ir->lock, flags); return 0; }
static int meson_ir_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct device_node *node = dev->of_node; struct resource *res; const char *map_name; struct meson_ir *ir; int irq, ret; ir = devm_kzalloc(dev, sizeof(struct meson_ir), GFP_KERNEL); if (!ir) return -ENOMEM; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ir->reg = devm_ioremap_resource(dev, res); if (IS_ERR(ir->reg)) { dev_err(dev, "failed to map registers\n"); return PTR_ERR(ir->reg); } irq = platform_get_irq(pdev, 0); if (irq < 0) { dev_err(dev, "no irq resource\n"); return irq; } ir->rc = devm_rc_allocate_device(dev, RC_DRIVER_IR_RAW); if (!ir->rc) { dev_err(dev, "failed to allocate rc device\n"); return -ENOMEM; } ir->rc->priv = ir; ir->rc->device_name = DRIVER_NAME; ir->rc->input_phys = DRIVER_NAME "/input0"; ir->rc->input_id.bustype = BUS_HOST; map_name = of_get_property(node, "linux,rc-map-name", NULL); ir->rc->map_name = map_name ? map_name : RC_MAP_EMPTY; ir->rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER; ir->rc->rx_resolution = US_TO_NS(MESON_TRATE); ir->rc->min_timeout = 1; ir->rc->timeout = IR_DEFAULT_TIMEOUT; ir->rc->max_timeout = 10 * IR_DEFAULT_TIMEOUT; ir->rc->driver_name = DRIVER_NAME; spin_lock_init(&ir->lock); platform_set_drvdata(pdev, ir); ret = devm_rc_register_device(dev, ir->rc); if (ret) { dev_err(dev, "failed to register rc device\n"); return ret; } ret = devm_request_irq(dev, irq, meson_ir_irq, 0, NULL, ir); if (ret) { dev_err(dev, "failed to request irq\n"); return ret; } /* Reset the decoder */ meson_ir_set_mask(ir, IR_DEC_REG1, REG1_RESET, REG1_RESET); meson_ir_set_mask(ir, IR_DEC_REG1, REG1_RESET, 0); /* Set general operation mode (= raw/software decoding) */ if (of_device_is_compatible(node, "amlogic,meson6-ir")) meson_ir_set_mask(ir, IR_DEC_REG1, REG1_MODE_MASK, FIELD_PREP(REG1_MODE_MASK, DECODE_MODE_RAW)); else meson_ir_set_mask(ir, IR_DEC_REG2, REG2_MODE_MASK, FIELD_PREP(REG2_MODE_MASK, DECODE_MODE_RAW)); /* Set rate */ meson_ir_set_mask(ir, IR_DEC_REG0, REG0_RATE_MASK, MESON_TRATE - 1); /* IRQ on rising and falling edges */ meson_ir_set_mask(ir, IR_DEC_REG1, REG1_IRQSEL_MASK, FIELD_PREP(REG1_IRQSEL_MASK, REG1_IRQSEL_RISE_FALL)); /* Enable the decoder */ meson_ir_set_mask(ir, IR_DEC_REG1, REG1_ENABLE, REG1_ENABLE); dev_info(dev, "receiver initialized\n"); return 0; }
static int meson_ir_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct device_node *node = dev->of_node; struct resource *res; const char *map_name; struct meson_ir *ir; int ret; ir = devm_kzalloc(dev, sizeof(struct meson_ir), GFP_KERNEL); if (!ir) return -ENOMEM; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ir->reg = devm_ioremap_resource(dev, res); if (IS_ERR(ir->reg)) { dev_err(dev, "failed to map registers\n"); return PTR_ERR(ir->reg); } ir->irq = platform_get_irq(pdev, 0); if (ir->irq < 0) { dev_err(dev, "no irq resource\n"); return ir->irq; } ir->rc = rc_allocate_device(); if (!ir->rc) { dev_err(dev, "failed to allocate rc device\n"); return -ENOMEM; } ir->rc->priv = ir; ir->rc->input_name = DRIVER_NAME; ir->rc->input_phys = DRIVER_NAME "/input0"; ir->rc->input_id.bustype = BUS_HOST; map_name = of_get_property(node, "linux,rc-map-name", NULL); ir->rc->map_name = map_name ? map_name : RC_MAP_EMPTY; ir->rc->dev.parent = dev; ir->rc->driver_type = RC_DRIVER_IR_RAW; ir->rc->allowed_protocols = RC_BIT_ALL; ir->rc->rx_resolution = US_TO_NS(MESON_TRATE); ir->rc->timeout = MS_TO_NS(200); ir->rc->driver_name = DRIVER_NAME; spin_lock_init(&ir->lock); platform_set_drvdata(pdev, ir); ret = rc_register_device(ir->rc); if (ret) { dev_err(dev, "failed to register rc device\n"); goto out_free; } ret = devm_request_irq(dev, ir->irq, meson_ir_irq, 0, "ir-meson", ir); if (ret) { dev_err(dev, "failed to request irq\n"); goto out_unreg; } /* Reset the decoder */ meson_ir_set_mask(ir, IR_DEC_REG1, REG1_RESET, REG1_RESET); meson_ir_set_mask(ir, IR_DEC_REG1, REG1_RESET, 0); /* Set general operation mode */ meson_ir_set_mask(ir, IR_DEC_REG1, REG1_MODE_MASK, REG1_MODE_GENERAL); /* Set rate */ meson_ir_set_mask(ir, IR_DEC_REG0, REG0_RATE_MASK, MESON_TRATE - 1); /* IRQ on rising and falling edges */ meson_ir_set_mask(ir, IR_DEC_REG1, REG1_IRQSEL_MASK, REG1_IRQSEL_RISE_FALL); /* Enable the decoder */ meson_ir_set_mask(ir, IR_DEC_REG1, REG1_ENABLE, REG1_ENABLE); dev_info(dev, "receiver initialized\n"); return 0; out_unreg: rc_unregister_device(ir->rc); ir->rc = NULL; out_free: rc_free_device(ir->rc); return ret; }