Lines Matching refs:tscadc
29 void am335x_tsc_se_set_cache(struct ti_tscadc_dev *tscadc, u32 val)
33 spin_lock_irqsave(&tscadc->reg_lock, flags);
34 tscadc->reg_se_cache |= val;
35 if (tscadc->adc_waiting)
36 wake_up(&tscadc->reg_se_wait);
37 else if (!tscadc->adc_in_use)
38 regmap_write(tscadc->regmap, REG_SE, tscadc->reg_se_cache);
40 spin_unlock_irqrestore(&tscadc->reg_lock, flags);
44 static void am335x_tscadc_need_adc(struct ti_tscadc_dev *tscadc)
49 regmap_read(tscadc->regmap, REG_ADCFSM, ®);
51 tscadc->adc_waiting = true;
52 prepare_to_wait(&tscadc->reg_se_wait, &wait,
54 spin_unlock_irq(&tscadc->reg_lock);
58 spin_lock_irq(&tscadc->reg_lock);
59 finish_wait(&tscadc->reg_se_wait, &wait);
65 regmap_read(tscadc->regmap, REG_ADCFSM, ®);
67 tscadc->adc_waiting = false;
69 tscadc->adc_in_use = true;
72 void am335x_tsc_se_set_once(struct ti_tscadc_dev *tscadc, u32 val)
74 spin_lock_irq(&tscadc->reg_lock);
75 am335x_tscadc_need_adc(tscadc);
77 regmap_write(tscadc->regmap, REG_SE, val);
78 spin_unlock_irq(&tscadc->reg_lock);
82 void am335x_tsc_se_adc_done(struct ti_tscadc_dev *tscadc)
86 spin_lock_irqsave(&tscadc->reg_lock, flags);
87 tscadc->adc_in_use = false;
88 regmap_write(tscadc->regmap, REG_SE, tscadc->reg_se_cache);
89 spin_unlock_irqrestore(&tscadc->reg_lock, flags);
93 void am335x_tsc_se_clr(struct ti_tscadc_dev *tscadc, u32 val)
97 spin_lock_irqsave(&tscadc->reg_lock, flags);
98 tscadc->reg_se_cache &= ~val;
99 regmap_write(tscadc->regmap, REG_SE, tscadc->reg_se_cache);
100 spin_unlock_irqrestore(&tscadc->reg_lock, flags);
104 static void tscadc_idle_config(struct ti_tscadc_dev *tscadc)
109 if (ti_adc_with_touchscreen(tscadc))
112 regmap_write(tscadc->regmap, REG_IDLECONFIG, idleconfig);
117 struct ti_tscadc_dev *tscadc;
129 tscadc = devm_kzalloc(&pdev->dev, sizeof(*tscadc), GFP_KERNEL);
130 if (!tscadc)
133 tscadc->dev = &pdev->dev;
140 tscadc->data = of_device_get_match_data(&pdev->dev);
142 if (ti_adc_with_touchscreen(tscadc)) {
200 tscadc->irq = err;
202 tscadc->tscadc_base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
203 if (IS_ERR(tscadc->tscadc_base))
204 return PTR_ERR(tscadc->tscadc_base);
206 tscadc->tscadc_phys_base = res->start;
207 tscadc->regmap = devm_regmap_init_mmio(&pdev->dev,
208 tscadc->tscadc_base,
210 if (IS_ERR(tscadc->regmap)) {
212 return PTR_ERR(tscadc->regmap);
215 spin_lock_init(&tscadc->reg_lock);
216 init_waitqueue_head(&tscadc->reg_se_wait);
237 tscadc->clk_div = (clk_get_rate(clk) / tscadc->data->target_clk_rate) - 1;
238 regmap_write(tscadc->regmap, REG_CLKDIV, tscadc->clk_div);
241 * Set the control register bits. tscadc->ctrl stores the configuration
245 tscadc->ctrl = CNTRLREG_STEPID;
246 if (ti_adc_with_touchscreen(tscadc)) {
247 tscadc->ctrl |= CNTRLREG_TSC_STEPCONFIGWRT;
249 tscadc->ctrl |= CNTRLREG_TSC_ENB;
251 tscadc->ctrl |= CNTRLREG_TSC_5WIRE;
253 tscadc->ctrl |= CNTRLREG_TSC_4WIRE;
256 tscadc->ctrl |= CNTRLREG_MAG_PREAMP_PWRDOWN |
259 regmap_write(tscadc->regmap, REG_CTRL, tscadc->ctrl);
261 tscadc_idle_config(tscadc);
264 regmap_write(tscadc->regmap, REG_CTRL, tscadc->ctrl | CNTRLREG_SSENB);
268 cell = &tscadc->cells[cell_idx++];
269 cell->name = tscadc->data->secondary_feature_name;
270 cell->of_compatible = tscadc->data->secondary_feature_compatible;
271 cell->platform_data = &tscadc;
272 cell->pdata_size = sizeof(tscadc);
277 cell = &tscadc->cells[cell_idx++];
278 cell->name = tscadc->data->adc_feature_name;
279 cell->of_compatible = tscadc->data->adc_feature_compatible;
280 cell->platform_data = &tscadc;
281 cell->pdata_size = sizeof(tscadc);
285 tscadc->cells, cell_idx, NULL, 0, NULL);
289 platform_set_drvdata(pdev, tscadc);
301 struct ti_tscadc_dev *tscadc = platform_get_drvdata(pdev);
303 regmap_write(tscadc->regmap, REG_SE, 0x00);
308 mfd_remove_devices(tscadc->dev);
318 struct ti_tscadc_dev *tscadc = dev_get_drvdata(dev);
320 regmap_write(tscadc->regmap, REG_SE, 0x00);
324 regmap_read(tscadc->regmap, REG_CTRL, &ctrl);
327 regmap_write(tscadc->regmap, REG_CTRL, ctrl);
336 struct ti_tscadc_dev *tscadc = dev_get_drvdata(dev);
340 regmap_write(tscadc->regmap, REG_CLKDIV, tscadc->clk_div);
341 regmap_write(tscadc->regmap, REG_CTRL, tscadc->ctrl);
342 tscadc_idle_config(tscadc);
343 regmap_write(tscadc->regmap, REG_CTRL, tscadc->ctrl | CNTRLREG_SSENB);
367 { .compatible = "ti,am3359-tscadc", .data = &tscdata },
375 .name = "ti_am3359-tscadc",