Lines Matching full:ir
3 * Driver for Allwinner sunXi IR controller
8 * Based on sun5i-ir.c:
20 #define SUNXI_IR_DEV "sunxi-ir"
23 /* IR Control */
61 #define REG_RXSTA_GET_AC(val) (((val) >> 8) & (ir->fifo_size * 2 - 1))
65 /* IR Sample Config */
109 struct sunxi_ir *ir = dev_id; in sunxi_ir_irq() local
112 spin_lock(&ir->ir_lock); in sunxi_ir_irq()
114 status = readl(ir->base + SUNXI_IR_RXSTA_REG); in sunxi_ir_irq()
117 writel(status | REG_RXSTA_CLEARALL, ir->base + SUNXI_IR_RXSTA_REG); in sunxi_ir_irq()
123 rc = rc > ir->fifo_size ? ir->fifo_size : rc; in sunxi_ir_irq()
127 dt = readb(ir->base + SUNXI_IR_RXFIFO_REG); in sunxi_ir_irq()
130 ir->rc->rx_resolution; in sunxi_ir_irq()
131 ir_raw_event_store_with_filter(ir->rc, &rawir); in sunxi_ir_irq()
136 ir_raw_event_reset(ir->rc); in sunxi_ir_irq()
138 ir_raw_event_set_idle(ir->rc, true); in sunxi_ir_irq()
139 ir_raw_event_handle(ir->rc); in sunxi_ir_irq()
141 ir_raw_event_handle(ir->rc); in sunxi_ir_irq()
144 spin_unlock(&ir->ir_lock); in sunxi_ir_irq()
158 struct sunxi_ir *ir; in sunxi_ir_probe() local
161 ir = devm_kzalloc(dev, sizeof(struct sunxi_ir), GFP_KERNEL); in sunxi_ir_probe()
162 if (!ir) in sunxi_ir_probe()
171 spin_lock_init(&ir->ir_lock); in sunxi_ir_probe()
173 ir->fifo_size = quirks->fifo_size; in sunxi_ir_probe()
176 ir->apb_clk = devm_clk_get(dev, "apb"); in sunxi_ir_probe()
177 if (IS_ERR(ir->apb_clk)) { in sunxi_ir_probe()
179 return PTR_ERR(ir->apb_clk); in sunxi_ir_probe()
181 ir->clk = devm_clk_get(dev, "ir"); in sunxi_ir_probe()
182 if (IS_ERR(ir->clk)) { in sunxi_ir_probe()
183 dev_err(dev, "failed to get a ir clock.\n"); in sunxi_ir_probe()
184 return PTR_ERR(ir->clk); in sunxi_ir_probe()
192 ir->rst = devm_reset_control_get_exclusive(dev, NULL); in sunxi_ir_probe()
193 if (IS_ERR(ir->rst)) in sunxi_ir_probe()
194 return PTR_ERR(ir->rst); in sunxi_ir_probe()
195 ret = reset_control_deassert(ir->rst); in sunxi_ir_probe()
200 ret = clk_set_rate(ir->clk, b_clk_freq); in sunxi_ir_probe()
202 dev_err(dev, "set ir base clock failed!\n"); in sunxi_ir_probe()
207 if (clk_prepare_enable(ir->apb_clk)) { in sunxi_ir_probe()
213 if (clk_prepare_enable(ir->clk)) { in sunxi_ir_probe()
221 ir->base = devm_ioremap_resource(dev, res); in sunxi_ir_probe()
222 if (IS_ERR(ir->base)) { in sunxi_ir_probe()
223 ret = PTR_ERR(ir->base); in sunxi_ir_probe()
227 ir->rc = rc_allocate_device(RC_DRIVER_IR_RAW); in sunxi_ir_probe()
228 if (!ir->rc) { in sunxi_ir_probe()
234 ir->rc->priv = ir; in sunxi_ir_probe()
235 ir->rc->device_name = SUNXI_IR_DEV; in sunxi_ir_probe()
236 ir->rc->input_phys = "sunxi-ir/input0"; in sunxi_ir_probe()
237 ir->rc->input_id.bustype = BUS_HOST; in sunxi_ir_probe()
238 ir->rc->input_id.vendor = 0x0001; in sunxi_ir_probe()
239 ir->rc->input_id.product = 0x0001; in sunxi_ir_probe()
240 ir->rc->input_id.version = 0x0100; in sunxi_ir_probe()
241 ir->map_name = of_get_property(dn, "linux,rc-map-name", NULL); in sunxi_ir_probe()
242 ir->rc->map_name = ir->map_name ?: RC_MAP_EMPTY; in sunxi_ir_probe()
243 ir->rc->dev.parent = dev; in sunxi_ir_probe()
244 ir->rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER; in sunxi_ir_probe()
245 /* Frequency after IR internal divider with sample period in ns */ in sunxi_ir_probe()
246 ir->rc->rx_resolution = (USEC_PER_SEC / (b_clk_freq / 64)); in sunxi_ir_probe()
247 ir->rc->timeout = MS_TO_US(SUNXI_IR_TIMEOUT); in sunxi_ir_probe()
248 ir->rc->driver_name = SUNXI_IR_DEV; in sunxi_ir_probe()
250 ret = rc_register_device(ir->rc); in sunxi_ir_probe()
256 platform_set_drvdata(pdev, ir); in sunxi_ir_probe()
259 ir->irq = platform_get_irq(pdev, 0); in sunxi_ir_probe()
260 if (ir->irq < 0) { in sunxi_ir_probe()
261 ret = ir->irq; in sunxi_ir_probe()
265 ret = devm_request_irq(dev, ir->irq, sunxi_ir_irq, 0, SUNXI_IR_DEV, ir); in sunxi_ir_probe()
272 writel(REG_CTL_MD, ir->base+SUNXI_IR_CTL_REG); in sunxi_ir_probe()
276 ir->base + SUNXI_IR_CIR_REG); in sunxi_ir_probe()
279 writel(REG_RXCTL_RPPI, ir->base + SUNXI_IR_RXCTL_REG); in sunxi_ir_probe()
282 writel(REG_RXSTA_CLEARALL, ir->base + SUNXI_IR_RXSTA_REG); in sunxi_ir_probe()
289 REG_RXINT_RAI_EN | REG_RXINT_RAL(ir->fifo_size / 2 - 1), in sunxi_ir_probe()
290 ir->base + SUNXI_IR_RXINT_REG); in sunxi_ir_probe()
292 /* Enable IR Module */ in sunxi_ir_probe()
293 tmp = readl(ir->base + SUNXI_IR_CTL_REG); in sunxi_ir_probe()
294 writel(tmp | REG_CTL_GEN | REG_CTL_RXEN, ir->base + SUNXI_IR_CTL_REG); in sunxi_ir_probe()
296 dev_info(dev, "initialized sunXi IR driver\n"); in sunxi_ir_probe()
300 rc_free_device(ir->rc); in sunxi_ir_probe()
302 clk_disable_unprepare(ir->clk); in sunxi_ir_probe()
304 clk_disable_unprepare(ir->apb_clk); in sunxi_ir_probe()
306 reset_control_assert(ir->rst); in sunxi_ir_probe()
314 struct sunxi_ir *ir = platform_get_drvdata(pdev); in sunxi_ir_remove() local
316 clk_disable_unprepare(ir->clk); in sunxi_ir_remove()
317 clk_disable_unprepare(ir->apb_clk); in sunxi_ir_remove()
318 reset_control_assert(ir->rst); in sunxi_ir_remove()
320 spin_lock_irqsave(&ir->ir_lock, flags); in sunxi_ir_remove()
321 /* disable IR IRQ */ in sunxi_ir_remove()
322 writel(0, ir->base + SUNXI_IR_RXINT_REG); in sunxi_ir_remove()
324 writel(REG_RXSTA_CLEARALL, ir->base + SUNXI_IR_RXSTA_REG); in sunxi_ir_remove()
325 /* disable IR */ in sunxi_ir_remove()
326 writel(0, ir->base + SUNXI_IR_CTL_REG); in sunxi_ir_remove()
327 spin_unlock_irqrestore(&ir->ir_lock, flags); in sunxi_ir_remove()
329 rc_unregister_device(ir->rc); in sunxi_ir_remove()
350 .compatible = "allwinner,sun4i-a10-ir",
354 .compatible = "allwinner,sun5i-a13-ir",
358 .compatible = "allwinner,sun6i-a31-ir",
376 MODULE_DESCRIPTION("Allwinner sunXi IR controller driver");