Lines Matching refs:lradc
84 struct sun4i_lradc_data *lradc = dev_id; in sun4i_lradc_irq() local
87 ints = readl(lradc->base + LRADC_INTS); in sun4i_lradc_irq()
95 input_report_key(lradc->input, lradc->chan0_keycode, 0); in sun4i_lradc_irq()
96 lradc->chan0_keycode = 0; in sun4i_lradc_irq()
99 if ((ints & CHAN0_KEYDOWN_IRQ) && lradc->chan0_keycode == 0) { in sun4i_lradc_irq()
100 val = readl(lradc->base + LRADC_DATA0) & 0x3f; in sun4i_lradc_irq()
101 voltage = val * lradc->vref / 63; in sun4i_lradc_irq()
103 for (i = 0; i < lradc->chan0_map_count; i++) { in sun4i_lradc_irq()
104 diff = abs(lradc->chan0_map[i].voltage - voltage); in sun4i_lradc_irq()
107 keycode = lradc->chan0_map[i].keycode; in sun4i_lradc_irq()
111 lradc->chan0_keycode = keycode; in sun4i_lradc_irq()
112 input_report_key(lradc->input, lradc->chan0_keycode, 1); in sun4i_lradc_irq()
115 input_sync(lradc->input); in sun4i_lradc_irq()
117 writel(ints, lradc->base + LRADC_INTS); in sun4i_lradc_irq()
124 struct sun4i_lradc_data *lradc = input_get_drvdata(dev); in sun4i_lradc_open() local
127 error = regulator_enable(lradc->vref_supply); in sun4i_lradc_open()
132 lradc->vref = regulator_get_voltage(lradc->vref_supply) * 2 / 3; in sun4i_lradc_open()
139 SAMPLE_RATE(0) | ENABLE(1), lradc->base + LRADC_CTRL); in sun4i_lradc_open()
141 writel(CHAN0_KEYUP_IRQ | CHAN0_KEYDOWN_IRQ, lradc->base + LRADC_INTC); in sun4i_lradc_open()
148 struct sun4i_lradc_data *lradc = input_get_drvdata(dev); in sun4i_lradc_close() local
152 SAMPLE_RATE(2), lradc->base + LRADC_CTRL); in sun4i_lradc_close()
153 writel(0, lradc->base + LRADC_INTC); in sun4i_lradc_close()
155 regulator_disable(lradc->vref_supply); in sun4i_lradc_close()
159 struct sun4i_lradc_data *lradc) in sun4i_lradc_load_dt_keymap() argument
169 lradc->chan0_map_count = of_get_child_count(np); in sun4i_lradc_load_dt_keymap()
170 if (lradc->chan0_map_count == 0) { in sun4i_lradc_load_dt_keymap()
175 lradc->chan0_map = devm_kmalloc_array(dev, lradc->chan0_map_count, in sun4i_lradc_load_dt_keymap()
178 if (!lradc->chan0_map) in sun4i_lradc_load_dt_keymap()
183 struct sun4i_lradc_keymap *map = &lradc->chan0_map[i]; in sun4i_lradc_load_dt_keymap()
212 struct sun4i_lradc_data *lradc; in sun4i_lradc_probe() local
217 lradc = devm_kzalloc(dev, sizeof(struct sun4i_lradc_data), GFP_KERNEL); in sun4i_lradc_probe()
218 if (!lradc) in sun4i_lradc_probe()
221 error = sun4i_lradc_load_dt_keymap(dev, lradc); in sun4i_lradc_probe()
225 lradc->vref_supply = devm_regulator_get(dev, "vref"); in sun4i_lradc_probe()
226 if (IS_ERR(lradc->vref_supply)) in sun4i_lradc_probe()
227 return PTR_ERR(lradc->vref_supply); in sun4i_lradc_probe()
229 lradc->dev = dev; in sun4i_lradc_probe()
230 lradc->input = devm_input_allocate_device(dev); in sun4i_lradc_probe()
231 if (!lradc->input) in sun4i_lradc_probe()
234 lradc->input->name = pdev->name; in sun4i_lradc_probe()
235 lradc->input->phys = "sun4i_lradc/input0"; in sun4i_lradc_probe()
236 lradc->input->open = sun4i_lradc_open; in sun4i_lradc_probe()
237 lradc->input->close = sun4i_lradc_close; in sun4i_lradc_probe()
238 lradc->input->id.bustype = BUS_HOST; in sun4i_lradc_probe()
239 lradc->input->id.vendor = 0x0001; in sun4i_lradc_probe()
240 lradc->input->id.product = 0x0001; in sun4i_lradc_probe()
241 lradc->input->id.version = 0x0100; in sun4i_lradc_probe()
243 __set_bit(EV_KEY, lradc->input->evbit); in sun4i_lradc_probe()
244 for (i = 0; i < lradc->chan0_map_count; i++) in sun4i_lradc_probe()
245 __set_bit(lradc->chan0_map[i].keycode, lradc->input->keybit); in sun4i_lradc_probe()
247 input_set_drvdata(lradc->input, lradc); in sun4i_lradc_probe()
249 lradc->base = devm_ioremap_resource(dev, in sun4i_lradc_probe()
251 if (IS_ERR(lradc->base)) in sun4i_lradc_probe()
252 return PTR_ERR(lradc->base); in sun4i_lradc_probe()
256 "sun4i-a10-lradc-keys", lradc); in sun4i_lradc_probe()
260 error = input_register_device(lradc->input); in sun4i_lradc_probe()
264 platform_set_drvdata(pdev, lradc); in sun4i_lradc_probe()