1 // SPDX-License-Identifier: GPL-2.0-or-later
13 #include <media/rc-core.h>
15 #define DRIVER_NAME "tango-ir"
40 #define DISABLE_NEC	(BIT(4) | BIT(8))
41 #define ENABLE_RC5	(BIT(0) | BIT(9))
42 #define ENABLE_RC6	(BIT(0) | BIT(7))
43 #define ACK_IR_INT	(BIT(0) | BIT(1))
44 #define ACK_RC6_INT	(BIT(31))
60 	v = readl_relaxed(ir->rc5_base + IR_NEC_DATA);  in tango_ir_handle_nec()
62 		rc_repeat(ir->rc);  in tango_ir_handle_nec()
67 	rc_keydown(ir->rc, proto, code, 0);  in tango_ir_handle_nec()
74 	data = readl_relaxed(ir->rc5_base + IR_RC5_DATA);  in tango_ir_handle_rc5()
75 	if (data & BIT(31))  in tango_ir_handle_rc5()
78 	field = data >> 12 & 1;  in tango_ir_handle_rc5()
84 	rc_keydown(ir->rc, RC_PROTO_RC5, code, toggle);  in tango_ir_handle_rc5()
89 	u32 data0, data1, toggle, mode, addr, cmd, code;  in tango_ir_handle_rc6()  local
91 	data0 = readl_relaxed(ir->rc6_base + RC6_DATA0);  in tango_ir_handle_rc6()
92 	data1 = readl_relaxed(ir->rc6_base + RC6_DATA1);  in tango_ir_handle_rc6()
94 	mode = data0 >> 1 & 7;  in tango_ir_handle_rc6()
95 	if (mode != 0)  in tango_ir_handle_rc6()
103 	rc_keydown(ir->rc, RC_PROTO_RC6_0, code, toggle);  in tango_ir_handle_rc6()
112 	rc5_stat = readl_relaxed(ir->rc5_base + IR_INT);  in tango_ir_irq()
113 	writel_relaxed(rc5_stat, ir->rc5_base + IR_INT);  in tango_ir_irq()
115 	rc6_stat = readl_relaxed(ir->rc6_base + RC6_CTRL);  in tango_ir_irq()
116 	writel_relaxed(rc6_stat, ir->rc6_base + RC6_CTRL);  in tango_ir_irq()
118 	if (!(rc5_stat & 3) && !(rc6_stat & BIT(31)))  in tango_ir_irq()
121 	if (rc5_stat & BIT(0))  in tango_ir_irq()
124 	if (rc5_stat & BIT(1))  in tango_ir_irq()
127 	if (rc6_stat & BIT(31))  in tango_ir_irq()
135 	struct tango_ir *ir = dev->priv;  in tango_change_protocol()
148 	writel_relaxed(rc5_ctrl, ir->rc5_base + IR_CTRL);  in tango_change_protocol()
149 	writel_relaxed(rc6_ctrl, ir->rc6_base + RC6_CTRL);  in tango_change_protocol()
157 	struct device *dev = &pdev->dev;  in tango_ir_probe()
160 	u64 clkrate, clkdiv;  in tango_ir_probe()  local
166 		return -EINVAL;  in tango_ir_probe()
170 		return -ENOMEM;  in tango_ir_probe()
172 	ir->rc5_base = devm_platform_ioremap_resource(pdev, 0);  in tango_ir_probe()
173 	if (IS_ERR(ir->rc5_base))  in tango_ir_probe()
174 		return PTR_ERR(ir->rc5_base);  in tango_ir_probe()
176 	ir->rc6_base = devm_platform_ioremap_resource(pdev, 1);  in tango_ir_probe()
177 	if (IS_ERR(ir->rc6_base))  in tango_ir_probe()
178 		return PTR_ERR(ir->rc6_base);  in tango_ir_probe()
180 	ir->clk = devm_clk_get(dev, NULL);  in tango_ir_probe()
181 	if (IS_ERR(ir->clk))  in tango_ir_probe()
182 		return PTR_ERR(ir->clk);  in tango_ir_probe()
186 		return -ENOMEM;  in tango_ir_probe()
188 	of_property_read_string(dev->of_node, "linux,rc-map-name", &map_name);  in tango_ir_probe()
190 	rc->device_name = DRIVER_NAME;  in tango_ir_probe()
191 	rc->driver_name = DRIVER_NAME;  in tango_ir_probe()
192 	rc->input_phys = DRIVER_NAME "/input0";  in tango_ir_probe()
193 	rc->map_name = map_name;  in tango_ir_probe()
194 	rc->allowed_protocols = NEC_ANY | RC_PROTO_BIT_RC5 | RC_PROTO_BIT_RC6_0;  in tango_ir_probe()
195 	rc->change_protocol = tango_change_protocol;  in tango_ir_probe()
196 	rc->priv = ir;  in tango_ir_probe()
197 	ir->rc = rc;  in tango_ir_probe()
199 	err = clk_prepare_enable(ir->clk);  in tango_ir_probe()
203 	clkrate = clk_get_rate(ir->clk);  in tango_ir_probe()
205 	clkdiv = clkrate * NEC_TIME_BASE;  in tango_ir_probe()
206 	do_div(clkdiv, 1000000);  in tango_ir_probe()
208 	val = NEC_CAP(31) | GPIO_SEL(12) | clkdiv;  in tango_ir_probe()
209 	writel_relaxed(val, ir->rc5_base + IR_NEC_CTRL);  in tango_ir_probe()
211 	clkdiv = clkrate * RC5_TIME_BASE;  in tango_ir_probe()
212 	do_div(clkdiv, 1000000);  in tango_ir_probe()
214 	writel_relaxed(DISABLE_NEC, ir->rc5_base + IR_CTRL);  in tango_ir_probe()
215 	writel_relaxed(clkdiv, ir->rc5_base + IR_RC5_CLK_DIV);  in tango_ir_probe()
216 	writel_relaxed(ACK_IR_INT, ir->rc5_base + IR_INT);  in tango_ir_probe()
218 	clkdiv = clkrate * RC6_TIME_BASE;  in tango_ir_probe()
219 	do_div(clkdiv, RC6_CARRIER);  in tango_ir_probe()
221 	writel_relaxed(ACK_RC6_INT, ir->rc6_base + RC6_CTRL);  in tango_ir_probe()
222 	writel_relaxed((clkdiv >> 2) << 18 | clkdiv, ir->rc6_base + RC6_CLKDIV);  in tango_ir_probe()
237 	clk_disable_unprepare(ir->clk);  in tango_ir_probe()
245 	clk_disable_unprepare(ir->clk);  in tango_ir_remove()
250 	{ .compatible = "sigma,smp8642-ir" },