Lines Matching full:ir
2 * Driver for Allwinner sunXi IR controller
7 * Based on sun5i-ir.c:
29 #define SUNXI_IR_DEV "sunxi-ir"
32 /* IR Control */
64 #define REG_RXSTA_GET_AC(val) (((val) >> 8) & (ir->fifo_size * 2 - 1))
68 /* IR Sample Config */
101 struct sunxi_ir *ir = dev_id; in sunxi_ir_irq() local
104 spin_lock(&ir->ir_lock); in sunxi_ir_irq()
106 status = readl(ir->base + SUNXI_IR_RXSTA_REG); in sunxi_ir_irq()
109 writel(status | REG_RXSTA_CLEARALL, ir->base + SUNXI_IR_RXSTA_REG); in sunxi_ir_irq()
115 rc = rc > ir->fifo_size ? ir->fifo_size : rc; in sunxi_ir_irq()
119 dt = readb(ir->base + SUNXI_IR_RXFIFO_REG); in sunxi_ir_irq()
122 ir->rc->rx_resolution; in sunxi_ir_irq()
123 ir_raw_event_store_with_filter(ir->rc, &rawir); in sunxi_ir_irq()
128 ir_raw_event_reset(ir->rc); in sunxi_ir_irq()
130 ir_raw_event_set_idle(ir->rc, true); in sunxi_ir_irq()
131 ir_raw_event_handle(ir->rc); in sunxi_ir_irq()
134 spin_unlock(&ir->ir_lock); in sunxi_ir_irq()
147 struct sunxi_ir *ir; in sunxi_ir_probe() local
150 ir = devm_kzalloc(dev, sizeof(struct sunxi_ir), GFP_KERNEL); in sunxi_ir_probe()
151 if (!ir) in sunxi_ir_probe()
154 spin_lock_init(&ir->ir_lock); in sunxi_ir_probe()
156 if (of_device_is_compatible(dn, "allwinner,sun5i-a13-ir")) in sunxi_ir_probe()
157 ir->fifo_size = 64; in sunxi_ir_probe()
159 ir->fifo_size = 16; in sunxi_ir_probe()
162 ir->apb_clk = devm_clk_get(dev, "apb"); in sunxi_ir_probe()
163 if (IS_ERR(ir->apb_clk)) { in sunxi_ir_probe()
165 return PTR_ERR(ir->apb_clk); in sunxi_ir_probe()
167 ir->clk = devm_clk_get(dev, "ir"); in sunxi_ir_probe()
168 if (IS_ERR(ir->clk)) { in sunxi_ir_probe()
169 dev_err(dev, "failed to get a ir clock.\n"); in sunxi_ir_probe()
170 return PTR_ERR(ir->clk); in sunxi_ir_probe()
177 ir->rst = devm_reset_control_get_optional_exclusive(dev, NULL); in sunxi_ir_probe()
178 if (IS_ERR(ir->rst)) in sunxi_ir_probe()
179 return PTR_ERR(ir->rst); in sunxi_ir_probe()
180 ret = reset_control_deassert(ir->rst); in sunxi_ir_probe()
184 ret = clk_set_rate(ir->clk, b_clk_freq); in sunxi_ir_probe()
186 dev_err(dev, "set ir base clock failed!\n"); in sunxi_ir_probe()
191 if (clk_prepare_enable(ir->apb_clk)) { in sunxi_ir_probe()
197 if (clk_prepare_enable(ir->clk)) { in sunxi_ir_probe()
205 ir->base = devm_ioremap_resource(dev, res); in sunxi_ir_probe()
206 if (IS_ERR(ir->base)) { in sunxi_ir_probe()
208 ret = PTR_ERR(ir->base); in sunxi_ir_probe()
212 ir->rc = rc_allocate_device(RC_DRIVER_IR_RAW); in sunxi_ir_probe()
213 if (!ir->rc) { in sunxi_ir_probe()
219 ir->rc->priv = ir; in sunxi_ir_probe()
220 ir->rc->device_name = SUNXI_IR_DEV; in sunxi_ir_probe()
221 ir->rc->input_phys = "sunxi-ir/input0"; in sunxi_ir_probe()
222 ir->rc->input_id.bustype = BUS_HOST; in sunxi_ir_probe()
223 ir->rc->input_id.vendor = 0x0001; in sunxi_ir_probe()
224 ir->rc->input_id.product = 0x0001; in sunxi_ir_probe()
225 ir->rc->input_id.version = 0x0100; in sunxi_ir_probe()
226 ir->map_name = of_get_property(dn, "linux,rc-map-name", NULL); in sunxi_ir_probe()
227 ir->rc->map_name = ir->map_name ?: RC_MAP_EMPTY; in sunxi_ir_probe()
228 ir->rc->dev.parent = dev; in sunxi_ir_probe()
229 ir->rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER; in sunxi_ir_probe()
230 /* Frequency after IR internal divider with sample period in ns */ in sunxi_ir_probe()
231 ir->rc->rx_resolution = (1000000000ul / (b_clk_freq / 64)); in sunxi_ir_probe()
232 ir->rc->timeout = MS_TO_NS(SUNXI_IR_TIMEOUT); in sunxi_ir_probe()
233 ir->rc->driver_name = SUNXI_IR_DEV; in sunxi_ir_probe()
235 ret = rc_register_device(ir->rc); in sunxi_ir_probe()
241 platform_set_drvdata(pdev, ir); in sunxi_ir_probe()
244 ir->irq = platform_get_irq(pdev, 0); in sunxi_ir_probe()
245 if (ir->irq < 0) { in sunxi_ir_probe()
247 ret = ir->irq; in sunxi_ir_probe()
251 ret = devm_request_irq(dev, ir->irq, sunxi_ir_irq, 0, SUNXI_IR_DEV, ir); in sunxi_ir_probe()
258 writel(REG_CTL_MD, ir->base+SUNXI_IR_CTL_REG); in sunxi_ir_probe()
262 ir->base + SUNXI_IR_CIR_REG); in sunxi_ir_probe()
265 writel(REG_RXCTL_RPPI, ir->base + SUNXI_IR_RXCTL_REG); in sunxi_ir_probe()
268 writel(REG_RXSTA_CLEARALL, ir->base + SUNXI_IR_RXSTA_REG); in sunxi_ir_probe()
275 REG_RXINT_RAI_EN | REG_RXINT_RAL(ir->fifo_size / 2 - 1), in sunxi_ir_probe()
276 ir->base + SUNXI_IR_RXINT_REG); in sunxi_ir_probe()
278 /* Enable IR Module */ in sunxi_ir_probe()
279 tmp = readl(ir->base + SUNXI_IR_CTL_REG); in sunxi_ir_probe()
280 writel(tmp | REG_CTL_GEN | REG_CTL_RXEN, ir->base + SUNXI_IR_CTL_REG); in sunxi_ir_probe()
282 dev_info(dev, "initialized sunXi IR driver\n"); in sunxi_ir_probe()
286 rc_free_device(ir->rc); in sunxi_ir_probe()
288 clk_disable_unprepare(ir->clk); in sunxi_ir_probe()
290 clk_disable_unprepare(ir->apb_clk); in sunxi_ir_probe()
292 reset_control_assert(ir->rst); in sunxi_ir_probe()
300 struct sunxi_ir *ir = platform_get_drvdata(pdev); in sunxi_ir_remove() local
302 clk_disable_unprepare(ir->clk); in sunxi_ir_remove()
303 clk_disable_unprepare(ir->apb_clk); in sunxi_ir_remove()
304 reset_control_assert(ir->rst); in sunxi_ir_remove()
306 spin_lock_irqsave(&ir->ir_lock, flags); in sunxi_ir_remove()
307 /* disable IR IRQ */ in sunxi_ir_remove()
308 writel(0, ir->base + SUNXI_IR_RXINT_REG); in sunxi_ir_remove()
310 writel(REG_RXSTA_CLEARALL, ir->base + SUNXI_IR_RXSTA_REG); in sunxi_ir_remove()
311 /* disable IR */ in sunxi_ir_remove()
312 writel(0, ir->base + SUNXI_IR_CTL_REG); in sunxi_ir_remove()
313 spin_unlock_irqrestore(&ir->ir_lock, flags); in sunxi_ir_remove()
315 rc_unregister_device(ir->rc); in sunxi_ir_remove()
320 { .compatible = "allwinner,sun4i-a10-ir", },
321 { .compatible = "allwinner,sun5i-a13-ir", },
337 MODULE_DESCRIPTION("Allwinner sunXi IR controller driver");