3 files changed, 32 insertions, 11 deletions

diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index d86196cfe4b4..24c28e3f93a3 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -106,7 +106,7 @@ config AT91_ADC
           Say yes here to build support for Atmel AT91 ADC.
 
 config EXYNOS_ADC
-        bool "Exynos ADC driver support"
+        tristate "Exynos ADC driver support"
         depends on OF
         help
           Core support for the ADC block found in the Samsung EXYNOS series
@@ -114,7 +114,7 @@ config EXYNOS_ADC
           this resource.
 
 config LP8788_ADC
-        bool "LP8788 ADC driver"
+        tristate "LP8788 ADC driver"
         depends on MFD_LP8788
         help
           Say yes here to build support for TI LP8788 ADC.
diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c
index 5b1aa027c034..89777ed9abd8 100644
--- a/drivers/iio/adc/at91_adc.c
+++ b/drivers/iio/adc/at91_adc.c
@@ -765,14 +765,17 @@ static int at91_adc_probe_pdata(struct at91_adc_state *st,
         if (!pdata)
                 return -EINVAL;
 
+        st->caps = (struct at91_adc_caps *)
+                        platform_get_device_id(pdev)->driver_data;
+
         st->use_external = pdata->use_external_triggers;
         st->vref_mv = pdata->vref;
         st->channels_mask = pdata->channels_used;
-        st->num_channels = pdata->num_channels;
+        st->num_channels = st->caps->num_channels;
         st->startup_time = pdata->startup_time;
         st->trigger_number = pdata->trigger_number;
         st->trigger_list = pdata->trigger_list;
-        st->registers = pdata->registers;
+        st->registers = &st->caps->registers;
 
         return 0;
 }
@@ -1004,8 +1007,11 @@ static int at91_adc_probe(struct platform_device *pdev)
          * the best converted final value between two channels selection
          * The formula thus is : Sample and Hold Time = (shtim + 1) / ADCClock
          */
-        shtim = round_up((st->sample_hold_time * adc_clk_khz /
-                          1000) - 1, 1);
+        if (st->sample_hold_time > 0)
+                shtim = round_up((st->sample_hold_time * adc_clk_khz / 1000)
+                                 - 1, 1);
+        else
+                shtim = 0;
 
         reg = AT91_ADC_PRESCAL_(prsc) & st->registers->mr_prescal_mask;
         reg |= AT91_ADC_STARTUP_(ticks) & st->registers->mr_startup_mask;
@@ -1101,7 +1107,6 @@ static int at91_adc_remove(struct platform_device *pdev)
         return 0;
 }
 
-#ifdef CONFIG_OF
 static struct at91_adc_caps at91sam9260_caps = {
         .calc_startup_ticks = calc_startup_ticks_9260,
         .num_channels = 4,
@@ -1154,11 +1159,27 @@ static const struct of_device_id at91_adc_dt_ids[] = {
         {},
 };
 MODULE_DEVICE_TABLE(of, at91_adc_dt_ids);
-#endif
+
+static const struct platform_device_id at91_adc_ids[] = {
+        {
+                .name = "at91sam9260-adc",
+                .driver_data = (unsigned long)&at91sam9260_caps,
+        }, {
+                .name = "at91sam9g45-adc",
+                .driver_data = (unsigned long)&at91sam9g45_caps,
+        }, {
+                .name = "at91sam9x5-adc",
+                .driver_data = (unsigned long)&at91sam9x5_caps,
+        }, {
+                /* terminator */
+        }
+};
+MODULE_DEVICE_TABLE(platform, at91_adc_ids);
 
 static struct platform_driver at91_adc_driver = {
         .probe = at91_adc_probe,
         .remove = at91_adc_remove,
+        .id_table = at91_adc_ids,
         .driver = {
                    .name = DRIVER_NAME,
                    .of_match_table = of_match_ptr(at91_adc_dt_ids),
diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c
index d25b262193a7..affa93f51789 100644
--- a/drivers/iio/adc/exynos_adc.c
+++ b/drivers/iio/adc/exynos_adc.c
@@ -344,7 +344,7 @@ static int exynos_adc_probe(struct platform_device *pdev)
 
         exynos_adc_hw_init(info);
 
-        ret = of_platform_populate(np, exynos_adc_match, NULL, &pdev->dev);
+        ret = of_platform_populate(np, exynos_adc_match, NULL, &indio_dev->dev);
         if (ret < 0) {
                 dev_err(&pdev->dev, "failed adding child nodes\n");
                 goto err_of_populate;
@@ -353,7 +353,7 @@ static int exynos_adc_probe(struct platform_device *pdev)
         return 0;
 
 err_of_populate:
-        device_for_each_child(&pdev->dev, NULL,
+        device_for_each_child(&indio_dev->dev, NULL,
                                 exynos_adc_remove_devices);
         regulator_disable(info->vdd);
         clk_disable_unprepare(info->clk);
@@ -369,7 +369,7 @@ static int exynos_adc_remove(struct platform_device *pdev)
         struct iio_dev *indio_dev = platform_get_drvdata(pdev);
         struct exynos_adc *info = iio_priv(indio_dev);
 
-        device_for_each_child(&pdev->dev, NULL,
+        device_for_each_child(&indio_dev->dev, NULL,
                                 exynos_adc_remove_devices);
         regulator_disable(info->vdd);
         clk_disable_unprepare(info->clk);