64 #define REG_RXSTA_GET_AC(val) (((val) >> 8) & (ir->fifo_size * 2 - 1))
105 	struct sunxi_ir *ir = dev_id;  in sunxi_ir_irq()  local
108 	spin_lock(&ir->ir_lock);  in sunxi_ir_irq()
110 	status = readl(ir->base + SUNXI_IR_RXSTA_REG);  in sunxi_ir_irq()
113 	writel(status | REG_RXSTA_CLEARALL, ir->base + SUNXI_IR_RXSTA_REG);  in sunxi_ir_irq()
119 		rc = rc > ir->fifo_size ? ir->fifo_size : rc;  in sunxi_ir_irq()
123 			dt = readb(ir->base + SUNXI_IR_RXFIFO_REG);  in sunxi_ir_irq()
126 			ir_raw_event_store_with_filter(ir->rc, &rawir);  in sunxi_ir_irq()
131 		ir_raw_event_reset(ir->rc);  in sunxi_ir_irq()
133 		ir_raw_event_set_idle(ir->rc, true);  in sunxi_ir_irq()
134 		ir_raw_event_handle(ir->rc);  in sunxi_ir_irq()
137 	spin_unlock(&ir->ir_lock);  in sunxi_ir_irq()
150 	struct sunxi_ir *ir;  in sunxi_ir_probe()  local
152 	ir = devm_kzalloc(dev, sizeof(struct sunxi_ir), GFP_KERNEL);  in sunxi_ir_probe()
153 	if (!ir)  in sunxi_ir_probe()
156 	spin_lock_init(&ir->ir_lock);  in sunxi_ir_probe()
159 		ir->fifo_size = 64;  in sunxi_ir_probe()
161 		ir->fifo_size = 16;  in sunxi_ir_probe()
164 	ir->apb_clk = devm_clk_get(dev, "apb");  in sunxi_ir_probe()
165 	if (IS_ERR(ir->apb_clk)) {  in sunxi_ir_probe()
167 		return PTR_ERR(ir->apb_clk);  in sunxi_ir_probe()
169 	ir->clk = devm_clk_get(dev, "ir");  in sunxi_ir_probe()
170 	if (IS_ERR(ir->clk)) {  in sunxi_ir_probe()
172 		return PTR_ERR(ir->clk);  in sunxi_ir_probe()
176 	ir->rst = devm_reset_control_get_optional(dev, NULL);  in sunxi_ir_probe()
177 	if (IS_ERR(ir->rst)) {  in sunxi_ir_probe()
178 		ret = PTR_ERR(ir->rst);  in sunxi_ir_probe()
181 		ir->rst = NULL;  in sunxi_ir_probe()
183 		ret = reset_control_deassert(ir->rst);  in sunxi_ir_probe()
188 	ret = clk_set_rate(ir->clk, SUNXI_IR_BASE_CLK);  in sunxi_ir_probe()
194 	if (clk_prepare_enable(ir->apb_clk)) {  in sunxi_ir_probe()
200 	if (clk_prepare_enable(ir->clk)) {  in sunxi_ir_probe()
208 	ir->base = devm_ioremap_resource(dev, res);  in sunxi_ir_probe()
209 	if (IS_ERR(ir->base)) {  in sunxi_ir_probe()
211 		ret = PTR_ERR(ir->base);  in sunxi_ir_probe()
215 	ir->rc = rc_allocate_device();  in sunxi_ir_probe()
216 	if (!ir->rc) {  in sunxi_ir_probe()
222 	ir->rc->priv = ir;  in sunxi_ir_probe()
223 	ir->rc->input_name = SUNXI_IR_DEV;  in sunxi_ir_probe()
224 	ir->rc->input_phys = "sunxi-ir/input0";  in sunxi_ir_probe()
225 	ir->rc->input_id.bustype = BUS_HOST;  in sunxi_ir_probe()
226 	ir->rc->input_id.vendor = 0x0001;  in sunxi_ir_probe()
227 	ir->rc->input_id.product = 0x0001;  in sunxi_ir_probe()
228 	ir->rc->input_id.version = 0x0100;  in sunxi_ir_probe()
229 	ir->map_name = of_get_property(dn, "linux,rc-map-name", NULL);  in sunxi_ir_probe()
230 	ir->rc->map_name = ir->map_name ?: RC_MAP_EMPTY;  in sunxi_ir_probe()
231 	ir->rc->dev.parent = dev;  in sunxi_ir_probe()
232 	ir->rc->driver_type = RC_DRIVER_IR_RAW;  in sunxi_ir_probe()
233 	ir->rc->allowed_protocols = RC_BIT_ALL;  in sunxi_ir_probe()
234 	ir->rc->rx_resolution = SUNXI_IR_SAMPLE;  in sunxi_ir_probe()
235 	ir->rc->timeout = MS_TO_NS(SUNXI_IR_TIMEOUT);  in sunxi_ir_probe()
236 	ir->rc->driver_name = SUNXI_IR_DEV;  in sunxi_ir_probe()
238 	ret = rc_register_device(ir->rc);  in sunxi_ir_probe()
244 	platform_set_drvdata(pdev, ir);  in sunxi_ir_probe()
247 	ir->irq = platform_get_irq(pdev, 0);  in sunxi_ir_probe()
248 	if (ir->irq < 0) {  in sunxi_ir_probe()
250 		ret = ir->irq;  in sunxi_ir_probe()
254 	ret = devm_request_irq(dev, ir->irq, sunxi_ir_irq, 0, SUNXI_IR_DEV, ir);  in sunxi_ir_probe()
261 	writel(REG_CTL_MD, ir->base+SUNXI_IR_CTL_REG);  in sunxi_ir_probe()
265 	       ir->base + SUNXI_IR_CIR_REG);  in sunxi_ir_probe()
268 	writel(REG_RXCTL_RPPI, ir->base + SUNXI_IR_RXCTL_REG);  in sunxi_ir_probe()
271 	writel(REG_RXSTA_CLEARALL, ir->base + SUNXI_IR_RXSTA_REG);  in sunxi_ir_probe()
278 	       REG_RXINT_RAI_EN | REG_RXINT_RAL(ir->fifo_size / 2 - 1),  in sunxi_ir_probe()
279 	       ir->base + SUNXI_IR_RXINT_REG);  in sunxi_ir_probe()
282 	tmp = readl(ir->base + SUNXI_IR_CTL_REG);  in sunxi_ir_probe()
283 	writel(tmp | REG_CTL_GEN | REG_CTL_RXEN, ir->base + SUNXI_IR_CTL_REG);  in sunxi_ir_probe()
289 	rc_free_device(ir->rc);  in sunxi_ir_probe()
291 	clk_disable_unprepare(ir->clk);  in sunxi_ir_probe()
293 	clk_disable_unprepare(ir->apb_clk);  in sunxi_ir_probe()
295 	if (ir->rst)  in sunxi_ir_probe()
296 		reset_control_assert(ir->rst);  in sunxi_ir_probe()
304 	struct sunxi_ir *ir = platform_get_drvdata(pdev);  in sunxi_ir_remove()  local
306 	clk_disable_unprepare(ir->clk);  in sunxi_ir_remove()
307 	clk_disable_unprepare(ir->apb_clk);  in sunxi_ir_remove()
308 	if (ir->rst)  in sunxi_ir_remove()
309 		reset_control_assert(ir->rst);  in sunxi_ir_remove()
311 	spin_lock_irqsave(&ir->ir_lock, flags);  in sunxi_ir_remove()
313 	writel(0, ir->base + SUNXI_IR_RXINT_REG);  in sunxi_ir_remove()
315 	writel(REG_RXSTA_CLEARALL, ir->base + SUNXI_IR_RXSTA_REG);  in sunxi_ir_remove()
317 	writel(0, ir->base + SUNXI_IR_CTL_REG);  in sunxi_ir_remove()
318 	spin_unlock_irqrestore(&ir->ir_lock, flags);  in sunxi_ir_remove()
320 	rc_unregister_device(ir->rc);  in sunxi_ir_remove()