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;
}