Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Filling in the padding slot in the bpf structure as a bug fix in 'ne'
overlapped with actually using that padding area for something in
'net-next'.

Signed-off-by: David S. Miller <davem@davemloft.net>

54 files changed, 519 insertions, 308 deletions

diff --git a/drivers/atm/zatm.c b/drivers/atm/zatm.c
index 9c9a22958717..a8d2eb0ceb8d 100644
--- a/drivers/atm/zatm.c
+++ b/drivers/atm/zatm.c
@@ -1151,8 +1151,8 @@ static void eprom_get_byte(struct zatm_dev *zatm_dev, unsigned char *byte,
 }
 
 
-static unsigned char eprom_try_esi(struct atm_dev *dev, unsigned short cmd,
-				   int offset, int swap)
+static int eprom_try_esi(struct atm_dev *dev, unsigned short cmd, int offset,
+			 int swap)
 {
 	unsigned char buf[ZEPROM_SIZE];
 	struct zatm_dev *zatm_dev;
diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c
index d4a81be0d7d2..b6be62025325 100644
--- a/drivers/crypto/inside-secure/safexcel.c
+++ b/drivers/crypto/inside-secure/safexcel.c
@@ -152,8 +152,8 @@ static int eip197_load_firmwares(struct safexcel_crypto_priv *priv)
 	       EIP197_PE_ICE_SCRATCH_CTRL_CHANGE_ACCESS;
 	writel(val, EIP197_PE(priv) + EIP197_PE_ICE_SCRATCH_CTRL);
 
-	memset(EIP197_PE(priv) + EIP197_PE_ICE_SCRATCH_RAM, 0,
-	       EIP197_NUM_OF_SCRATCH_BLOCKS * sizeof(u32));
+	memset_io(EIP197_PE(priv) + EIP197_PE_ICE_SCRATCH_RAM, 0,
+		  EIP197_NUM_OF_SCRATCH_BLOCKS * sizeof(u32));
 
 	eip197_write_firmware(priv, fw[FW_IFPP], EIP197_PE_ICE_FPP_CTRL,
 			      EIP197_PE_ICE_RAM_CTRL_FPP_PROG_EN);
diff --git a/drivers/firmware/qcom_scm-32.c b/drivers/firmware/qcom_scm-32.c
index dfbd894d5bb7..4e24e591ae74 100644
--- a/drivers/firmware/qcom_scm-32.c
+++ b/drivers/firmware/qcom_scm-32.c
@@ -147,7 +147,7 @@ static u32 smc(u32 cmd_addr)
 			"smc	#0	@ switch to secure world\n"
 			: "=r" (r0)
 			: "r" (r0), "r" (r1), "r" (r2)
-			: "r3");
+			: "r3", "r12");
 	} while (r0 == QCOM_SCM_INTERRUPTED);
 
 	return r0;
@@ -263,7 +263,7 @@ static s32 qcom_scm_call_atomic1(u32 svc, u32 cmd, u32 arg1)
 			"smc    #0      @ switch to secure world\n"
 			: "=r" (r0)
 			: "r" (r0), "r" (r1), "r" (r2)
-			: "r3");
+			: "r3", "r12");
 	return r0;
 }
 
@@ -298,7 +298,7 @@ static s32 qcom_scm_call_atomic2(u32 svc, u32 cmd, u32 arg1, u32 arg2)
 			"smc    #0      @ switch to secure world\n"
 			: "=r" (r0)
 			: "r" (r0), "r" (r1), "r" (r2), "r" (r3)
-			);
+			: "r12");
 	return r0;
 }
 
@@ -328,7 +328,7 @@ u32 qcom_scm_get_version(void)
 			"smc	#0	@ switch to secure world\n"
 			: "=r" (r0), "=r" (r1)
 			: "r" (r0), "r" (r1)
-			: "r2", "r3");
+			: "r2", "r3", "r12");
 	} while (r0 == QCOM_SCM_INTERRUPTED);
 
 	version = r1;
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 1dd1142246c2..27579443cdc5 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -4555,8 +4555,8 @@ static int dm_update_crtcs_state(struct dc *dc,
 	for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
 		struct amdgpu_crtc *acrtc = NULL;
 		struct amdgpu_dm_connector *aconnector = NULL;
-		struct drm_connector_state *new_con_state = NULL;
-		struct dm_connector_state *dm_conn_state = NULL;
+		struct drm_connector_state *drm_new_conn_state = NULL, *drm_old_conn_state = NULL;
+		struct dm_connector_state *dm_new_conn_state = NULL, *dm_old_conn_state = NULL;
 		struct drm_plane_state *new_plane_state = NULL;
 
 		new_stream = NULL;
@@ -4577,19 +4577,23 @@ static int dm_update_crtcs_state(struct dc *dc,
 		/* TODO This hack should go away */
 		if (aconnector && enable) {
 			// Make sure fake sink is created in plug-in scenario
-			new_con_state = drm_atomic_get_connector_state(state,
+			drm_new_conn_state = drm_atomic_get_new_connector_state(state,
  								    &aconnector->base);
+			drm_old_conn_state = drm_atomic_get_old_connector_state(state,
+								    &aconnector->base);
 
-			if (IS_ERR(new_con_state)) {
-				ret = PTR_ERR_OR_ZERO(new_con_state);
+
+			if (IS_ERR(drm_new_conn_state)) {
+				ret = PTR_ERR_OR_ZERO(drm_new_conn_state);
 				break;
 			}
 
-			dm_conn_state = to_dm_connector_state(new_con_state);
+			dm_new_conn_state = to_dm_connector_state(drm_new_conn_state);
+			dm_old_conn_state = to_dm_connector_state(drm_old_conn_state);
 
 			new_stream = create_stream_for_sink(aconnector,
 							     &new_crtc_state->mode,
-							    dm_conn_state);
+							    dm_new_conn_state);
 
 			/*
 			 * we can have no stream on ACTION_SET if a display
@@ -4695,20 +4699,30 @@ next_crtc:
 		 * We want to do dc stream updates that do not require a
 		 * full modeset below.
 		 */
-		if (!enable || !aconnector || modereset_required(new_crtc_state))
+		if (!(enable && aconnector && new_crtc_state->enable &&
+		      new_crtc_state->active))
 			continue;
 		/*
 		 * Given above conditions, the dc state cannot be NULL because:
-		 * 1. We're attempting to enable a CRTC. Which has a...
-		 * 2. Valid connector attached, and
-		 * 3. User does not want to reset it (disable or mark inactive,
-		 *    which can happen on a CRTC that's already disabled).
-		 * => It currently exists.
+		 * 1. We're in the process of enabling CRTCs (just been added
+		 *    to the dc context, or already is on the context)
+		 * 2. Has a valid connector attached, and
+		 * 3. Is currently active and enabled.
+		 * => The dc stream state currently exists.
 		 */
 		BUG_ON(dm_new_crtc_state->stream == NULL);
 
-		/* Color managment settings */
-		if (dm_new_crtc_state->base.color_mgmt_changed) {
+		/* Scaling or underscan settings */
+		if (is_scaling_state_different(dm_old_conn_state, dm_new_conn_state))
+			update_stream_scaling_settings(
+				&new_crtc_state->mode, dm_new_conn_state, dm_new_crtc_state->stream);
+
+		/*
+		 * Color management settings. We also update color properties
+		 * when a modeset is needed, to ensure it gets reprogrammed.
+		 */
+		if (dm_new_crtc_state->base.color_mgmt_changed ||
+		    drm_atomic_crtc_needs_modeset(new_crtc_state)) {
 			ret = amdgpu_dm_set_regamma_lut(dm_new_crtc_state);
 			if (ret)
 				goto fail;
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index ec8d0006ef7c..3c136f2b954f 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -2077,7 +2077,7 @@ static irqreturn_t dw_hdmi_hardirq(int irq, void *dev_id)
 	return ret;
 }
 
-void __dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense)
+void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense)
 {
 	mutex_lock(&hdmi->mutex);
 
@@ -2103,13 +2103,6 @@ void __dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense)
 	}
 	mutex_unlock(&hdmi->mutex);
 }
-
-void dw_hdmi_setup_rx_sense(struct device *dev, bool hpd, bool rx_sense)
-{
-	struct dw_hdmi *hdmi = dev_get_drvdata(dev);
-
-	__dw_hdmi_setup_rx_sense(hdmi, hpd, rx_sense);
-}
 EXPORT_SYMBOL_GPL(dw_hdmi_setup_rx_sense);
 
 static irqreturn_t dw_hdmi_irq(int irq, void *dev_id)
@@ -2145,9 +2138,9 @@ static irqreturn_t dw_hdmi_irq(int irq, void *dev_id)
 	 */
 	if (intr_stat &
 	    (HDMI_IH_PHY_STAT0_RX_SENSE | HDMI_IH_PHY_STAT0_HPD)) {
-		__dw_hdmi_setup_rx_sense(hdmi,
-					 phy_stat & HDMI_PHY_HPD,
-					 phy_stat & HDMI_PHY_RX_SENSE);
+		dw_hdmi_setup_rx_sense(hdmi,
+				       phy_stat & HDMI_PHY_HPD,
+				       phy_stat & HDMI_PHY_RX_SENSE);
 
 		if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0)
 			cec_notifier_set_phys_addr(hdmi->cec_notifier,
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index ffe14ec3e7f2..70ae1f232331 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -1145,6 +1145,7 @@ int drm_dp_psr_setup_time(const u8 psr_cap[EDP_PSR_RECEIVER_CAP_SIZE])
 	static const u16 psr_setup_time_us[] = {
 		PSR_SETUP_TIME(330),
 		PSR_SETUP_TIME(275),
+		PSR_SETUP_TIME(220),
 		PSR_SETUP_TIME(165),
 		PSR_SETUP_TIME(110),
 		PSR_SETUP_TIME(55),
diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c
index 3ace929dd90f..3f502eef2431 100644
--- a/drivers/gpu/drm/i915/i915_query.c
+++ b/drivers/gpu/drm/i915/i915_query.c
@@ -4,6 +4,8 @@
  * Copyright © 2018 Intel Corporation
  */
 
+#include <linux/nospec.h>
+
 #include "i915_drv.h"
 #include "i915_query.h"
 #include <uapi/drm/i915_drm.h>
@@ -100,7 +102,7 @@ int i915_query_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
 
 	for (i = 0; i < args->num_items; i++, user_item_ptr++) {
 		struct drm_i915_query_item item;
-		u64 func_idx;
+		unsigned long func_idx;
 		int ret;
 
 		if (copy_from_user(&item, user_item_ptr, sizeof(item)))
@@ -109,12 +111,17 @@ int i915_query_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
 		if (item.query_id == 0)
 			return -EINVAL;
 
+		if (overflows_type(item.query_id - 1, unsigned long))
+			return -EINVAL;
+
 		func_idx = item.query_id - 1;
 
-		if (func_idx < ARRAY_SIZE(i915_query_funcs))
+		ret = -EINVAL;
+		if (func_idx < ARRAY_SIZE(i915_query_funcs)) {
+			func_idx = array_index_nospec(func_idx,
+						      ARRAY_SIZE(i915_query_funcs));
 			ret = i915_query_funcs[func_idx](dev_priv, &item);
-		else
-			ret = -EINVAL;
+		}
 
 		/* Only write the length back to userspace if they differ. */
 		if (ret != item.length && put_user(ret, &user_item_ptr->length))
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 8691c86f579c..e125d16a1aa7 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -574,6 +574,36 @@ exit:
 	return NOTIFY_OK;
 }
 
+static int
+intel_lvds_connector_register(struct drm_connector *connector)
+{
+	struct intel_lvds_connector *lvds = to_lvds_connector(connector);
+	int ret;
+
+	ret = intel_connector_register(connector);
+	if (ret)
+		return ret;
+
+	lvds->lid_notifier.notifier_call = intel_lid_notify;
+	if (acpi_lid_notifier_register(&lvds->lid_notifier)) {
+		DRM_DEBUG_KMS("lid notifier registration failed\n");
+		lvds->lid_notifier.notifier_call = NULL;
+	}
+
+	return 0;
+}
+
+static void
+intel_lvds_connector_unregister(struct drm_connector *connector)
+{
+	struct intel_lvds_connector *lvds = to_lvds_connector(connector);
+
+	if (lvds->lid_notifier.notifier_call)
+		acpi_lid_notifier_unregister(&lvds->lid_notifier);
+
+	intel_connector_unregister(connector);
+}
+
 /**
  * intel_lvds_destroy - unregister and free LVDS structures
  * @connector: connector to free
@@ -586,9 +616,6 @@ static void intel_lvds_destroy(struct drm_connector *connector)
 	struct intel_lvds_connector *lvds_connector =
 		to_lvds_connector(connector);
 
-	if (lvds_connector->lid_notifier.notifier_call)
-		acpi_lid_notifier_unregister(&lvds_connector->lid_notifier);
-
 	if (!IS_ERR_OR_NULL(lvds_connector->base.edid))
 		kfree(lvds_connector->base.edid);
 
@@ -609,8 +636,8 @@ static const struct drm_connector_funcs intel_lvds_connector_funcs = {
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.atomic_get_property = intel_digital_connector_atomic_get_property,
 	.atomic_set_property = intel_digital_connector_atomic_set_property,
-	.late_register = intel_connector_register,
-	.early_unregister = intel_connector_unregister,
+	.late_register = intel_lvds_connector_register,
+	.early_unregister = intel_lvds_connector_unregister,
 	.destroy = intel_lvds_destroy,
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 	.atomic_duplicate_state = intel_digital_connector_duplicate_state,
@@ -827,6 +854,14 @@ static const struct dmi_system_id intel_no_lvds[] = {
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "D525MW"),
 		},
 	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Radiant P845",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Radiant Systems Inc"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "P845"),
+		},
+	},
 
 	{ }	/* terminating entry */
 };
@@ -1150,12 +1185,6 @@ out:
 
 	lvds_encoder->a3_power = lvds & LVDS_A3_POWER_MASK;
 
-	lvds_connector->lid_notifier.notifier_call = intel_lid_notify;
-	if (acpi_lid_notifier_register(&lvds_connector->lid_notifier)) {
-		DRM_DEBUG_KMS("lid notifier registration failed\n");
-		lvds_connector->lid_notifier.notifier_call = NULL;
-	}
-
 	return;
 
 failed:
diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
index a393095aac1a..c9ad45686e7a 100644
--- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
@@ -529,7 +529,7 @@ static irqreturn_t dw_hdmi_top_thread_irq(int irq, void *dev_id)
 		if (stat & HDMITX_TOP_INTR_HPD_RISE)
 			hpd_connected = true;
 
-		dw_hdmi_setup_rx_sense(dw_hdmi->dev, hpd_connected,
+		dw_hdmi_setup_rx_sense(dw_hdmi->hdmi, hpd_connected,
 				       hpd_connected);
 
 		drm_helper_hpd_irq_event(dw_hdmi->encoder.dev);
diff --git a/drivers/gpu/drm/omapdrm/dss/sdi.c b/drivers/gpu/drm/omapdrm/dss/sdi.c
index 68a40ae26f5b..1e2c931f6acf 100644
--- a/drivers/gpu/drm/omapdrm/dss/sdi.c
+++ b/drivers/gpu/drm/omapdrm/dss/sdi.c
@@ -82,7 +82,7 @@ static int sdi_calc_clock_div(struct sdi_device *sdi, unsigned long pclk,
 			      struct dispc_clock_info *dispc_cinfo)
 {
 	int i;
-	struct sdi_clk_calc_ctx ctx = { .sdi = sdi };
+	struct sdi_clk_calc_ctx ctx;
 
 	/*
 	 * DSS fclk gives us very few possibilities, so finding a good pixel
@@ -95,6 +95,9 @@ static int sdi_calc_clock_div(struct sdi_device *sdi, unsigned long pclk,
 		bool ok;
 
 		memset(&ctx, 0, sizeof(ctx));
+
+		ctx.sdi = sdi;
+
 		if (pclk > 1000 * i * i * i)
 			ctx.pck_min = max(pclk - 1000 * i * i * i, 0lu);
 		else
diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index ede388309376..634f58042c77 100644
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -733,8 +733,8 @@ err_nomem:
 		/* Reset the page to write-back before releasing */
 		set_memory_wb((unsigned long)win->block[i].bdesc, 1);
 #endif
-		dma_free_coherent(msc_dev(msc), size, win->block[i].bdesc,
-				  win->block[i].addr);
+		dma_free_coherent(msc_dev(msc)->parent->parent, size,
+				  win->block[i].bdesc, win->block[i].addr);
 	}
 	kfree(win);
 
@@ -769,7 +769,7 @@ static void msc_buffer_win_free(struct msc *msc, struct msc_window *win)
 		/* Reset the page to write-back before releasing */
 		set_memory_wb((unsigned long)win->block[i].bdesc, 1);
 #endif
-		dma_free_coherent(msc_dev(win->msc), PAGE_SIZE,
+		dma_free_coherent(msc_dev(win->msc)->parent->parent, PAGE_SIZE,
 				  win->block[i].bdesc, win->block[i].addr);
 	}
 
diff --git a/drivers/hwtracing/stm/core.c b/drivers/hwtracing/stm/core.c
index 05386b76465e..10bcb5d73f90 100644
--- a/drivers/hwtracing/stm/core.c
+++ b/drivers/hwtracing/stm/core.c
@@ -19,6 +19,7 @@
 #include <linux/stm.h>
 #include <linux/fs.h>
 #include <linux/mm.h>
+#include <linux/vmalloc.h>
 #include "stm.h"
 
 #include <uapi/linux/stm.h>
@@ -674,7 +675,7 @@ static void stm_device_release(struct device *dev)
 {
 	struct stm_device *stm = to_stm_device(dev);
 
-	kfree(stm);
+	vfree(stm);
 }
 
 int stm_register_device(struct device *parent, struct stm_data *stm_data,
@@ -691,7 +692,7 @@ int stm_register_device(struct device *parent, struct stm_data *stm_data,
 		return -EINVAL;
 
 	nmasters = stm_data->sw_end - stm_data->sw_start + 1;
-	stm = kzalloc(sizeof(*stm) + nmasters * sizeof(void *), GFP_KERNEL);
+	stm = vzalloc(sizeof(*stm) + nmasters * sizeof(void *));
 	if (!stm)
 		return -ENOMEM;
 
@@ -744,7 +745,7 @@ err_device:
 	/* matches device_initialize() above */
 	put_device(&stm->dev);
 err_free:
-	kfree(stm);
+	vfree(stm);
 
 	return err;
 }
diff --git a/drivers/i2c/busses/i2c-ocores.c b/drivers/i2c/busses/i2c-ocores.c
index 8c42ca7107b2..45ae3c025bf6 100644
--- a/drivers/i2c/busses/i2c-ocores.c
+++ b/drivers/i2c/busses/i2c-ocores.c
@@ -1,6 +1,6 @@
 /*
  * i2c-ocores.c: I2C bus driver for OpenCores I2C controller
- * (http://www.opencores.org/projects.cgi/web/i2c/overview).
+ * (https://opencores.org/project/i2c/overview)
  *
  * Peter Korsgaard <jacmet@sunsite.dk>
  *
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 15606f237480..9da79070357c 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -158,6 +158,7 @@ config AT91_SAMA5D2_ADC
 	depends on ARCH_AT91 || COMPILE_TEST
 	depends on HAS_IOMEM
 	depends on HAS_DMA
+	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
 	help
 	  Say yes here to build support for Atmel SAMA5D2 ADC which is
diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c
index 801afb61310b..d4bbe5b53318 100644
--- a/drivers/iio/adc/ad7793.c
+++ b/drivers/iio/adc/ad7793.c
@@ -348,55 +348,6 @@ static const u16 ad7793_sample_freq_avail[16] = {0, 470, 242, 123, 62, 50, 39,
 static const u16 ad7797_sample_freq_avail[16] = {0, 0, 0, 123, 62, 50, 0,
 					33, 0, 17, 16, 12, 10, 8, 6, 4};
 
-static ssize_t ad7793_read_frequency(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
-{
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	struct ad7793_state *st = iio_priv(indio_dev);
-
-	return sprintf(buf, "%d\n",
-	       st->chip_info->sample_freq_avail[AD7793_MODE_RATE(st->mode)]);
-}
-
-static ssize_t ad7793_write_frequency(struct device *dev,
-		struct device_attribute *attr,
-		const char *buf,
-		size_t len)
-{
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	struct ad7793_state *st = iio_priv(indio_dev);
-	long lval;
-	int i, ret;
-
-	ret = kstrtol(buf, 10, &lval);
-	if (ret)
-		return ret;
-
-	if (lval == 0)
-		return -EINVAL;
-
-	for (i = 0; i < 16; i++)
-		if (lval == st->chip_info->sample_freq_avail[i])
-			break;
-	if (i == 16)
-		return -EINVAL;
-
-	ret = iio_device_claim_direct_mode(indio_dev);
-	if (ret)
-		return ret;
-	st->mode &= ~AD7793_MODE_RATE(-1);
-	st->mode |= AD7793_MODE_RATE(i);
-	ad_sd_write_reg(&st->sd, AD7793_REG_MODE, sizeof(st->mode), st->mode);
-	iio_device_release_direct_mode(indio_dev);
-
-	return len;
-}
-
-static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO,
-		ad7793_read_frequency,
-		ad7793_write_frequency);
-
 static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
 	"470 242 123 62 50 39 33 19 17 16 12 10 8 6 4");
 
@@ -424,7 +375,6 @@ static IIO_DEVICE_ATTR_NAMED(in_m_in_scale_available,
 		ad7793_show_scale_available, NULL, 0);
 
 static struct attribute *ad7793_attributes[] = {
-	&iio_dev_attr_sampling_frequency.dev_attr.attr,
 	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
 	&iio_dev_attr_in_m_in_scale_available.dev_attr.attr,
 	NULL
@@ -435,7 +385,6 @@ static const struct attribute_group ad7793_attribute_group = {
 };
 
 static struct attribute *ad7797_attributes[] = {
-	&iio_dev_attr_sampling_frequency.dev_attr.attr,
 	&iio_const_attr_sampling_frequency_available_ad7797.dev_attr.attr,
 	NULL
 };
@@ -505,6 +454,10 @@ static int ad7793_read_raw(struct iio_dev *indio_dev,
 			*val -= offset;
 		}
 		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*val = st->chip_info
+			       ->sample_freq_avail[AD7793_MODE_RATE(st->mode)];
+		return IIO_VAL_INT;
 	}
 	return -EINVAL;
 }
@@ -542,6 +495,26 @@ static int ad7793_write_raw(struct iio_dev *indio_dev,
 				break;
 			}
 		break;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		if (!val) {
+			ret = -EINVAL;
+			break;
+		}
+
+		for (i = 0; i < 16; i++)
+			if (val == st->chip_info->sample_freq_avail[i])
+				break;
+
+		if (i == 16) {
+			ret = -EINVAL;
+			break;
+		}
+
+		st->mode &= ~AD7793_MODE_RATE(-1);
+		st->mode |= AD7793_MODE_RATE(i);
+		ad_sd_write_reg(&st->sd, AD7793_REG_MODE, sizeof(st->mode),
+				st->mode);
+		break;
 	default:
 		ret = -EINVAL;
 	}
diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
index 4eff8351ce29..8729d6524b4d 100644
--- a/drivers/iio/adc/at91-sama5d2_adc.c
+++ b/drivers/iio/adc/at91-sama5d2_adc.c
@@ -333,6 +333,27 @@ static const struct iio_chan_spec at91_adc_channels[] = {
 				+ AT91_SAMA5D2_DIFF_CHAN_CNT + 1),
 };
 
+static int at91_adc_chan_xlate(struct iio_dev *indio_dev, int chan)
+{
+	int i;
+
+	for (i = 0; i < indio_dev->num_channels; i++) {
+		if (indio_dev->channels[i].scan_index == chan)
+			return i;
+	}
+	return -EINVAL;
+}
+
+static inline struct iio_chan_spec const *
+at91_adc_chan_get(struct iio_dev *indio_dev, int chan)
+{
+	int index = at91_adc_chan_xlate(indio_dev, chan);
+
+	if (index < 0)
+		return NULL;
+	return indio_dev