2  * Driver for Amlogic Meson IR remote receiver
26 #define DRIVER_NAME		"meson-ir"
74 static void meson_ir_set_mask(struct meson_ir *ir, unsigned int reg,  in meson_ir_set_mask()  argument
79 	data = readl(ir->reg + reg);  in meson_ir_set_mask()
82 	writel(data, ir->reg + reg);  in meson_ir_set_mask()
87 	struct meson_ir *ir = dev_id;  in meson_ir_irq()  local
91 	spin_lock(&ir->lock);  in meson_ir_irq()
93 	duration = readl_relaxed(ir->reg + IR_DEC_REG1);  in meson_ir_irq()
97 	status = readl_relaxed(ir->reg + IR_DEC_STATUS);  in meson_ir_irq()
100 	ir_raw_event_store_with_timeout(ir->rc, &rawir);  in meson_ir_irq()
102 	spin_unlock(&ir->lock);  in meson_ir_irq()
113 	struct meson_ir *ir;  in meson_ir_probe()  local
116 	ir = devm_kzalloc(dev, sizeof(struct meson_ir), GFP_KERNEL);  in meson_ir_probe()
117 	if (!ir)  in meson_ir_probe()
121 	ir->reg = devm_ioremap_resource(dev, res);  in meson_ir_probe()
122 	if (IS_ERR(ir->reg)) {  in meson_ir_probe()
124 		return PTR_ERR(ir->reg);  in meson_ir_probe()
133 	ir->rc = devm_rc_allocate_device(dev, RC_DRIVER_IR_RAW);  in meson_ir_probe()
134 	if (!ir->rc) {  in meson_ir_probe()
139 	ir->rc->priv = ir;  in meson_ir_probe()
140 	ir->rc->device_name = DRIVER_NAME;  in meson_ir_probe()
141 	ir->rc->input_phys = DRIVER_NAME "/input0";  in meson_ir_probe()
142 	ir->rc->input_id.bustype = BUS_HOST;  in meson_ir_probe()
144 	ir->rc->map_name = map_name ? map_name : RC_MAP_EMPTY;  in meson_ir_probe()
145 	ir->rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;  in meson_ir_probe()
146 	ir->rc->rx_resolution = US_TO_NS(MESON_TRATE);  in meson_ir_probe()
147 	ir->rc->min_timeout = 1;  in meson_ir_probe()
148 	ir->rc->timeout = IR_DEFAULT_TIMEOUT;  in meson_ir_probe()
149 	ir->rc->max_timeout = 10 * IR_DEFAULT_TIMEOUT;  in meson_ir_probe()
150 	ir->rc->driver_name = DRIVER_NAME;  in meson_ir_probe()
152 	spin_lock_init(&ir->lock);  in meson_ir_probe()
153 	platform_set_drvdata(pdev, ir);  in meson_ir_probe()
155 	ret = devm_rc_register_device(dev, ir->rc);  in meson_ir_probe()
161 	ret = devm_request_irq(dev, irq, meson_ir_irq, 0, NULL, ir);  in meson_ir_probe()
168 	meson_ir_set_mask(ir, IR_DEC_REG1, REG1_RESET, REG1_RESET);  in meson_ir_probe()
169 	meson_ir_set_mask(ir, IR_DEC_REG1, REG1_RESET, 0);  in meson_ir_probe()
172 	if (of_device_is_compatible(node, "amlogic,meson6-ir"))  in meson_ir_probe()
173 		meson_ir_set_mask(ir, IR_DEC_REG1, REG1_MODE_MASK,  in meson_ir_probe()
176 		meson_ir_set_mask(ir, IR_DEC_REG2, REG2_MODE_MASK,  in meson_ir_probe()
180 	meson_ir_set_mask(ir, IR_DEC_REG0, REG0_RATE_MASK, MESON_TRATE - 1);  in meson_ir_probe()
182 	meson_ir_set_mask(ir, IR_DEC_REG1, REG1_IRQSEL_MASK,  in meson_ir_probe()
185 	meson_ir_set_mask(ir, IR_DEC_REG1, REG1_ENABLE, REG1_ENABLE);  in meson_ir_probe()
194 	struct meson_ir *ir = platform_get_drvdata(pdev);  in meson_ir_remove()  local
198 	spin_lock_irqsave(&ir->lock, flags);  in meson_ir_remove()
199 	meson_ir_set_mask(ir, IR_DEC_REG1, REG1_ENABLE, 0);  in meson_ir_remove()
200 	spin_unlock_irqrestore(&ir->lock, flags);  in meson_ir_remove()
209 	struct meson_ir *ir = platform_get_drvdata(pdev);  in meson_ir_shutdown()  local
212 	spin_lock_irqsave(&ir->lock, flags);  in meson_ir_shutdown()
218 	if (of_device_is_compatible(node, "amlogic,meson6-ir"))  in meson_ir_shutdown()
219 		meson_ir_set_mask(ir, IR_DEC_REG1, REG1_MODE_MASK,  in meson_ir_shutdown()
222 		meson_ir_set_mask(ir, IR_DEC_REG2, REG2_MODE_MASK,  in meson_ir_shutdown()
226 	meson_ir_set_mask(ir, IR_DEC_REG0, REG0_RATE_MASK, 0x13);  in meson_ir_shutdown()
228 	spin_unlock_irqrestore(&ir->lock, flags);  in meson_ir_shutdown()
232 	{ .compatible = "amlogic,meson6-ir" },
233 	{ .compatible = "amlogic,meson8b-ir" },
234 	{ .compatible = "amlogic,meson-gxbb-ir" },
251 MODULE_DESCRIPTION("Amlogic Meson IR remote receiver driver");