Lines Matching +full:saradc +full:- +full:apb
1 // SPDX-License-Identifier: GPL-2.0-or-later
61 writel_relaxed(0, info->regs + SARADC_CTRL); in rockchip_saradc_power_down()
67 reinit_completion(&info->completion); in rockchip_saradc_conversion()
70 writel_relaxed(8, info->regs + SARADC_DLY_PU_SOC); in rockchip_saradc_conversion()
72 info->last_chan = chan; in rockchip_saradc_conversion()
76 | (chan->channel & SARADC_CTRL_CHN_MASK) in rockchip_saradc_conversion()
78 info->regs + SARADC_CTRL); in rockchip_saradc_conversion()
80 if (!wait_for_completion_timeout(&info->completion, SARADC_TIMEOUT)) in rockchip_saradc_conversion()
81 return -ETIMEDOUT; in rockchip_saradc_conversion()
95 mutex_lock(&indio_dev->mlock); in rockchip_saradc_read_raw()
100 mutex_unlock(&indio_dev->mlock); in rockchip_saradc_read_raw()
104 *val = info->last_val; in rockchip_saradc_read_raw()
105 mutex_unlock(&indio_dev->mlock); in rockchip_saradc_read_raw()
108 ret = regulator_get_voltage(info->vref); in rockchip_saradc_read_raw()
110 dev_err(&indio_dev->dev, "failed to get voltage\n"); in rockchip_saradc_read_raw()
115 *val2 = chan->scan_type.realbits; in rockchip_saradc_read_raw()
118 return -EINVAL; in rockchip_saradc_read_raw()
127 info->last_val = readl_relaxed(info->regs + SARADC_DATA); in rockchip_saradc_isr()
128 info->last_val &= GENMASK(info->last_chan->scan_type.realbits - 1, 0); in rockchip_saradc_isr()
132 complete(&info->completion); in rockchip_saradc_isr()
197 .compatible = "rockchip,saradc",
200 .compatible = "rockchip,rk3066-tsadc",
203 .compatible = "rockchip,rk3399-saradc",
211 * Reset SARADC Controller.
224 clk_disable_unprepare(info->clk); in rockchip_saradc_clk_disable()
231 clk_disable_unprepare(info->pclk); in rockchip_saradc_pclk_disable()
238 regulator_disable(info->vref); in rockchip_saradc_regulator_disable()
244 struct iio_dev *i_dev = pf->indio_dev; in rockchip_saradc_trigger_handler()
248 * @timestamp: will be 8-byte aligned automatically in rockchip_saradc_trigger_handler()
257 mutex_lock(&i_dev->mlock); in rockchip_saradc_trigger_handler()
259 for_each_set_bit(i, i_dev->active_scan_mask, i_dev->masklength) { in rockchip_saradc_trigger_handler()
260 const struct iio_chan_spec *chan = &i_dev->channels[i]; in rockchip_saradc_trigger_handler()
268 data.values[j] = info->last_val; in rockchip_saradc_trigger_handler()
274 mutex_unlock(&i_dev->mlock); in rockchip_saradc_trigger_handler()
276 iio_trigger_notify_done(i_dev->trig); in rockchip_saradc_trigger_handler()
284 struct device_node *np = pdev->dev.of_node; in rockchip_saradc_probe()
292 return -ENODEV; in rockchip_saradc_probe()
294 indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*info)); in rockchip_saradc_probe()
296 dev_err(&pdev->dev, "failed allocating iio device\n"); in rockchip_saradc_probe()
297 return -ENOMEM; in rockchip_saradc_probe()
301 match = of_match_device(rockchip_saradc_match, &pdev->dev); in rockchip_saradc_probe()
303 dev_err(&pdev->dev, "failed to match device\n"); in rockchip_saradc_probe()
304 return -ENODEV; in rockchip_saradc_probe()
307 info->data = match->data; in rockchip_saradc_probe()
310 if (info->data->num_channels > SARADC_MAX_CHANNELS) { in rockchip_saradc_probe()
311 dev_err(&pdev->dev, "max channels exceeded"); in rockchip_saradc_probe()
312 return -EINVAL; in rockchip_saradc_probe()
316 info->regs = devm_ioremap_resource(&pdev->dev, mem); in rockchip_saradc_probe()
317 if (IS_ERR(info->regs)) in rockchip_saradc_probe()
318 return PTR_ERR(info->regs); in rockchip_saradc_probe()
324 info->reset = devm_reset_control_get_exclusive(&pdev->dev, in rockchip_saradc_probe()
325 "saradc-apb"); in rockchip_saradc_probe()
326 if (IS_ERR(info->reset)) { in rockchip_saradc_probe()
327 ret = PTR_ERR(info->reset); in rockchip_saradc_probe()
328 if (ret != -ENOENT) in rockchip_saradc_probe()
331 dev_dbg(&pdev->dev, "no reset control found\n"); in rockchip_saradc_probe()
332 info->reset = NULL; in rockchip_saradc_probe()
335 init_completion(&info->completion); in rockchip_saradc_probe()
341 ret = devm_request_irq(&pdev->dev, irq, rockchip_saradc_isr, in rockchip_saradc_probe()
342 0, dev_name(&pdev->dev), info); in rockchip_saradc_probe()
344 dev_err(&pdev->dev, "failed requesting irq %d\n", irq); in rockchip_saradc_probe()
348 info->pclk = devm_clk_get(&pdev->dev, "apb_pclk"); in rockchip_saradc_probe()
349 if (IS_ERR(info->pclk)) { in rockchip_saradc_probe()
350 dev_err(&pdev->dev, "failed to get pclk\n"); in rockchip_saradc_probe()
351 return PTR_ERR(info->pclk); in rockchip_saradc_probe()
354 info->clk = devm_clk_get(&pdev->dev, "saradc"); in rockchip_saradc_probe()
355 if (IS_ERR(info->clk)) { in rockchip_saradc_probe()
356 dev_err(&pdev->dev, "failed to get adc clock\n"); in rockchip_saradc_probe()
357 return PTR_ERR(info->clk); in rockchip_saradc_probe()
360 info->vref = devm_regulator_get(&pdev->dev, "vref"); in rockchip_saradc_probe()
361 if (IS_ERR(info->vref)) { in rockchip_saradc_probe()
362 dev_err(&pdev->dev, "failed to get regulator, %ld\n", in rockchip_saradc_probe()
363 PTR_ERR(info->vref)); in rockchip_saradc_probe()
364 return PTR_ERR(info->vref); in rockchip_saradc_probe()
367 if (info->reset) in rockchip_saradc_probe()
368 rockchip_saradc_reset_controller(info->reset); in rockchip_saradc_probe()
372 * This may become user-configurable in the future. in rockchip_saradc_probe()
374 ret = clk_set_rate(info->clk, info->data->clk_rate); in rockchip_saradc_probe()
376 dev_err(&pdev->dev, "failed to set adc clk rate, %d\n", ret); in rockchip_saradc_probe()
380 ret = regulator_enable(info->vref); in rockchip_saradc_probe()
382 dev_err(&pdev->dev, "failed to enable vref regulator\n"); in rockchip_saradc_probe()
385 ret = devm_add_action_or_reset(&pdev->dev, in rockchip_saradc_probe()
388 dev_err(&pdev->dev, "failed to register devm action, %d\n", in rockchip_saradc_probe()
393 ret = clk_prepare_enable(info->pclk); in rockchip_saradc_probe()
395 dev_err(&pdev->dev, "failed to enable pclk\n"); in rockchip_saradc_probe()
398 ret = devm_add_action_or_reset(&pdev->dev, in rockchip_saradc_probe()
401 dev_err(&pdev->dev, "failed to register devm action, %d\n", in rockchip_saradc_probe()
406 ret = clk_prepare_enable(info->clk); in rockchip_saradc_probe()
408 dev_err(&pdev->dev, "failed to enable converter clock\n"); in rockchip_saradc_probe()
411 ret = devm_add_action_or_reset(&pdev->dev, in rockchip_saradc_probe()
414 dev_err(&pdev->dev, "failed to register devm action, %d\n", in rockchip_saradc_probe()
421 indio_dev->name = dev_name(&pdev->dev); in rockchip_saradc_probe()
422 indio_dev->info = &rockchip_saradc_iio_info; in rockchip_saradc_probe()
423 indio_dev->modes = INDIO_DIRECT_MODE; in rockchip_saradc_probe()
425 indio_dev->channels = info->data->channels; in rockchip_saradc_probe()
426 indio_dev->num_channels = info->data->num_channels; in rockchip_saradc_probe()
427 ret = devm_iio_triggered_buffer_setup(&indio_dev->dev, indio_dev, NULL, in rockchip_saradc_probe()
433 return devm_iio_device_register(&pdev->dev, indio_dev); in rockchip_saradc_probe()
442 clk_disable_unprepare(info->clk); in rockchip_saradc_suspend()
443 clk_disable_unprepare(info->pclk); in rockchip_saradc_suspend()
444 regulator_disable(info->vref); in rockchip_saradc_suspend()
455 ret = regulator_enable(info->vref); in rockchip_saradc_resume()
459 ret = clk_prepare_enable(info->pclk); in rockchip_saradc_resume()
463 ret = clk_prepare_enable(info->clk); in rockchip_saradc_resume()
465 clk_disable_unprepare(info->pclk); in rockchip_saradc_resume()
477 .name = "rockchip-saradc",
486 MODULE_DESCRIPTION("Rockchip SARADC driver");