media/rc/meson-ir.c

3  * Driver for Amlogic Meson IR remote receiver
21 #define DRIVER_NAME		"meson-ir"
54 /* Meson 6b uses REG1 to configure IR mode */
64 /* Meson 8b / GXBB use REG2 to configure IR mode */
97  * struct meson_ir_protocol - describe IR Protocol parameter
99  * @hw_protocol: select IR Protocol from IR Controller
104  *                         Some IR Protocol send the same data as repeat frame.
188 static void meson_ir_nec_handler(struct meson_ir *ir)  in meson_ir_nec_handler()  argument
194 	regmap_read(ir->reg, IR_DEC_STATUS, &status);  in meson_ir_nec_handler()
197 		rc_repeat(ir->rc);  in meson_ir_nec_handler()
199 		regmap_read(ir->reg, IR_DEC_FRAME, &code);  in meson_ir_nec_handler()
203 		rc_keydown(ir->rc, proto, code, 0);  in meson_ir_nec_handler()
207 static void meson_ir_hw_handler(struct meson_ir *ir)  in meson_ir_hw_handler()  argument
209 	if (ir->rc->enabled_protocols & RC_PROTO_BIT_NEC)  in meson_ir_hw_handler()
210 		meson_ir_nec_handler(ir);  in meson_ir_hw_handler()
215 	struct meson_ir *ir = dev_id;  in meson_ir_irq()  local
219 	spin_lock(&ir->lock);  in meson_ir_irq()
221 	regmap_read(ir->reg, IR_DEC_STATUS, &status);  in meson_ir_irq()
223 	if (ir->rc->driver_type == RC_DRIVER_IR_RAW) {  in meson_ir_irq()
226 		regmap_read(ir->reg, IR_DEC_REG1, &duration);  in meson_ir_irq()
230 		ir_raw_event_store_with_timeout(ir->rc, &rawir);  in meson_ir_irq()
231 	} else if (ir->rc->driver_type == RC_DRIVER_SCANCODE) {  in meson_ir_irq()
233 			meson_ir_hw_handler(ir);  in meson_ir_irq()
236 	spin_unlock(&ir->lock);  in meson_ir_irq()
248 	struct meson_ir *ir = dev->priv;  in meson_ir_hw_decoder_init()  local
266 	spin_lock_irqsave(&ir->lock, flags);  in meson_ir_hw_decoder_init()
269 	regmap_read(ir->reg, IR_DEC_STATUS, &regval);  in meson_ir_hw_decoder_init()
270 	regmap_read(ir->reg, IR_DEC_FRAME, &regval);  in meson_ir_hw_decoder_init()
272 	/* Reset ir decoder and disable decoder */  in meson_ir_hw_decoder_init()
273 	regmap_update_bits(ir->reg, IR_DEC_REG1, IR_DEC_REG1_ENABLE, 0);  in meson_ir_hw_decoder_init()
274 	regmap_update_bits(ir->reg, IR_DEC_REG1, IR_DEC_REG1_RESET,  in meson_ir_hw_decoder_init()
279 	regmap_update_bits(ir->reg, IR_DEC_REG0, IR_DEC_REG0_BASE_TIME, regval);  in meson_ir_hw_decoder_init()
282 	regmap_update_bits(ir->reg, IR_DEC_REG0, IR_DEC_REG0_FILTER,  in meson_ir_hw_decoder_init()
287 	regmap_update_bits(ir->reg, IR_DEC_REG2, IR_DEC_REG2_MODE, regval);  in meson_ir_hw_decoder_init()
290 	regmap_update_bits(ir->reg, IR_DEC_REG1, IR_DEC_REG1_HOLD_CODE,  in meson_ir_hw_decoder_init()
295 	regmap_update_bits(ir->reg, IR_DEC_REG2, IR_DEC_REG2_BIT_ORDER,  in meson_ir_hw_decoder_init()
299 	regmap_update_bits(ir->reg, IR_DEC_REG2, IR_DEC_REG2_TICK_MODE,  in meson_ir_hw_decoder_init()
308 	regmap_update_bits(ir->reg, IR_DEC_REG2, IR_DEC_REG2_REPEAT_COUNTER,  in meson_ir_hw_decoder_init()
311 	regmap_update_bits(ir->reg, IR_DEC_REG2, IR_DEC_REG2_REPEAT_TIME,  in meson_ir_hw_decoder_init()
314 	regmap_update_bits(ir->reg, IR_DEC_REG2, IR_DEC_REG2_COMPARE_FRAME,  in meson_ir_hw_decoder_init()
324 	regmap_update_bits(ir->reg, IR_DEC_REG0, IR_DEC_REG0_FRAME_TIME_MAX,  in meson_ir_hw_decoder_init()
329 	regmap_update_bits(ir->reg, IR_DEC_REG1, IR_DEC_REG1_FRAME_LEN, regval);  in meson_ir_hw_decoder_init()
336 	regmap_update_bits(ir->reg, IR_DEC_LDR_ACTIVE, IR_DEC_LDR_ACTIVE_MAX |  in meson_ir_hw_decoder_init()
342 	regmap_update_bits(ir->reg, IR_DEC_LDR_IDLE,  in meson_ir_hw_decoder_init()
348 	regmap_update_bits(ir->reg, IR_DEC_LDR_REPEAT, IR_DEC_LDR_REPEAT_MAX |  in meson_ir_hw_decoder_init()
357 	regmap_update_bits(ir->reg, IR_DEC_BIT_0,  in meson_ir_hw_decoder_init()
366 	regmap_update_bits(ir->reg, IR_DEC_STATUS, IR_DEC_STATUS_BIT_1_MAX |  in meson_ir_hw_decoder_init()
370 	regmap_update_bits(ir->reg, IR_DEC_STATUS, IR_DEC_STATUS_BIT_1_ENABLE,  in meson_ir_hw_decoder_init()
380 	regmap_update_bits(ir->reg, IR_DEC_DURATN2,  in meson_ir_hw_decoder_init()
389 	regmap_update_bits(ir->reg, IR_DEC_DURATN3,  in meson_ir_hw_decoder_init()
392 	/* Reset ir decoder and enable decode */  in meson_ir_hw_decoder_init()
393 	regmap_update_bits(ir->reg, IR_DEC_REG1, IR_DEC_REG1_RESET,  in meson_ir_hw_decoder_init()
395 	regmap_update_bits(ir->reg, IR_DEC_REG1, IR_DEC_REG1_RESET, 0);  in meson_ir_hw_decoder_init()
396 	regmap_update_bits(ir->reg, IR_DEC_REG1, IR_DEC_REG1_ENABLE,  in meson_ir_hw_decoder_init()
399 	spin_unlock_irqrestore(&ir->lock, flags);  in meson_ir_hw_decoder_init()
409 	struct meson_ir *ir = dev->priv;  in meson_ir_sw_decoder_init()  local
411 	spin_lock_irqsave(&ir->lock, flags);  in meson_ir_sw_decoder_init()
414 	regmap_update_bits(ir->reg, IR_DEC_REG1, IR_DEC_REG1_RESET,  in meson_ir_sw_decoder_init()
416 	regmap_update_bits(ir->reg, IR_DEC_REG1, IR_DEC_REG1_RESET, 0);  in meson_ir_sw_decoder_init()
419 	if (of_device_is_compatible(dev->dev.of_node, "amlogic,meson6-ir"))  in meson_ir_sw_decoder_init()
420 		regmap_update_bits(ir->reg, IR_DEC_REG1, IR_DEC_REG1_MODE,  in meson_ir_sw_decoder_init()
424 		regmap_update_bits(ir->reg, IR_DEC_REG2, IR_DEC_REG2_MODE,  in meson_ir_sw_decoder_init()
429 	regmap_update_bits(ir->reg, IR_DEC_REG0, IR_DEC_REG0_BASE_TIME,  in meson_ir_sw_decoder_init()
433 	regmap_update_bits(ir->reg, IR_DEC_REG1, IR_DEC_REG1_IRQSEL,  in meson_ir_sw_decoder_init()
436 	regmap_update_bits(ir->reg, IR_DEC_REG1, IR_DEC_REG1_ENABLE,  in meson_ir_sw_decoder_init()
439 	spin_unlock_irqrestore(&ir->lock, flags);  in meson_ir_sw_decoder_init()
451 	struct meson_ir *ir;  in meson_ir_probe()  local
454 	ir = devm_kzalloc(dev, sizeof(struct meson_ir), GFP_KERNEL);  in meson_ir_probe()
455 	if (!ir)  in meson_ir_probe()
462 	ir->param = match_data;  in meson_ir_probe()
468 	meson_ir_regmap_config.max_register = ir->param->max_register;  in meson_ir_probe()
469 	ir->reg = devm_regmap_init_mmio(&pdev->dev, res_start,  in meson_ir_probe()
471 	if (IS_ERR(ir->reg))  in meson_ir_probe()
472 		return PTR_ERR(ir->reg);  in meson_ir_probe()
478 	if (ir->param->support_hw_decoder)  in meson_ir_probe()
479 		ir->rc = devm_rc_allocate_device(&pdev->dev,  in meson_ir_probe()
482 		ir->rc = devm_rc_allocate_device(&pdev->dev, RC_DRIVER_IR_RAW);  in meson_ir_probe()
484 	if (!ir->rc) {  in meson_ir_probe()
489 	if (ir->rc->driver_type == RC_DRIVER_IR_RAW) {  in meson_ir_probe()
490 		ir->rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;  in meson_ir_probe()
491 		ir->rc->rx_resolution = MESON_RAW_TRATE;  in meson_ir_probe()
492 		ir->rc->min_timeout = 1;  in meson_ir_probe()
493 		ir->rc->timeout = IR_DEFAULT_TIMEOUT;  in meson_ir_probe()
494 		ir->rc->max_timeout = 10 * IR_DEFAULT_TIMEOUT;  in meson_ir_probe()
495 	} else if (ir->rc->driver_type == RC_DRIVER_SCANCODE) {  in meson_ir_probe()
496 		ir->rc->allowed_protocols = RC_PROTO_BIT_NEC;  in meson_ir_probe()
497 		ir->rc->change_protocol = meson_ir_hw_decoder_init;  in meson_ir_probe()
500 	ir->rc->priv = ir;  in meson_ir_probe()
501 	ir->rc->device_name = DRIVER_NAME;  in meson_ir_probe()
502 	ir->rc->input_phys = DRIVER_NAME "/input0";  in meson_ir_probe()
503 	ir->rc->input_id.bustype = BUS_HOST;  in meson_ir_probe()
505 	ir->rc->map_name = map_name ? map_name : RC_MAP_EMPTY;  in meson_ir_probe()
506 	ir->rc->driver_name = DRIVER_NAME;  in meson_ir_probe()
508 	spin_lock_init(&ir->lock);  in meson_ir_probe()
509 	platform_set_drvdata(pdev, ir);  in meson_ir_probe()
511 	ret = devm_rc_register_device(dev, ir->rc);  in meson_ir_probe()
517 	if (ir->rc->driver_type == RC_DRIVER_IR_RAW)  in meson_ir_probe()
518 		meson_ir_sw_decoder_init(ir->rc);  in meson_ir_probe()
520 	ret = devm_request_irq(dev, irq, meson_ir_irq, 0, "meson_ir", ir);  in meson_ir_probe()
533 	struct meson_ir *ir = platform_get_drvdata(pdev);  in meson_ir_remove()  local
537 	spin_lock_irqsave(&ir->lock, flags);  in meson_ir_remove()
538 	regmap_update_bits(ir->reg, IR_DEC_REG1, IR_DEC_REG1_ENABLE, 0);  in meson_ir_remove()
539 	spin_unlock_irqrestore(&ir->lock, flags);  in meson_ir_remove()
546 	struct meson_ir *ir = platform_get_drvdata(pdev);  in meson_ir_shutdown()  local
549 	spin_lock_irqsave(&ir->lock, flags);  in meson_ir_shutdown()
555 	if (of_device_is_compatible(node, "amlogic,meson6-ir"))  in meson_ir_shutdown()
556 		regmap_update_bits(ir->reg, IR_DEC_REG1, IR_DEC_REG1_MODE,  in meson_ir_shutdown()
559 		regmap_update_bits(ir->reg, IR_DEC_REG2, IR_DEC_REG2_MODE,  in meson_ir_shutdown()
563 	regmap_update_bits(ir->reg, IR_DEC_REG0, IR_DEC_REG0_BASE_TIME,  in meson_ir_shutdown()
567 	spin_unlock_irqrestore(&ir->lock, flags);  in meson_ir_shutdown()
572 	struct meson_ir *ir = dev_get_drvdata(dev);  in meson_ir_resume()  local
574 	if (ir->param->support_hw_decoder)  in meson_ir_resume()
575 		meson_ir_hw_decoder_init(ir->rc, &ir->rc->enabled_protocols);  in meson_ir_resume()
577 		meson_ir_sw_decoder_init(ir->rc);  in meson_ir_resume()
584 	struct meson_ir *ir = dev_get_drvdata(dev);  in meson_ir_suspend()  local
587 	spin_lock_irqsave(&ir->lock, flags);  in meson_ir_suspend()
588 	regmap_update_bits(ir->reg, IR_DEC_REG1, IR_DEC_REG1_ENABLE, 0);  in meson_ir_suspend()
589 	spin_unlock_irqrestore(&ir->lock, flags);  in meson_ir_suspend()
613 		.compatible = "amlogic,meson6-ir",
616 		.compatible = "amlogic,meson8b-ir",
619 		.compatible = "amlogic,meson-gxbb-ir",
622 		.compatible = "amlogic,meson-s4-ir",
642 MODULE_DESCRIPTION("Amlogic Meson IR remote receiver driver");