dmaengine: edma: DT: Change memcpy channel array from 16bit to 32bit type

This change makes the DT file to be easier to read since the memcpy
channels array does not need the '/bits/ 16' to be specified, which might
confuse some people.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

3 files changed, 13 insertions, 16 deletions

diff --git a/Documentation/devicetree/bindings/dma/ti-edma.txt b/Documentation/devicetree/bindings/dma/ti-edma.txt
index d3d0a4fb1c73..ae8b8f1d6e69 100644
--- a/Documentation/devicetree/bindings/dma/ti-edma.txt
+++ b/Documentation/devicetree/bindings/dma/ti-edma.txt
@@ -22,8 +22,7 @@ Required properties:
 Optional properties:
 - ti,hwmods:    Name of the hwmods associated to the eDMA CC
 - ti,edma-memcpy-channels: List of channels allocated to be used for memcpy, iow
-                these channels will be SW triggered channels. The list must
-                contain 16 bits numbers, see example.
+                these channels will be SW triggered channels. See example.
 - ti,edma-reserved-slot-ranges: PaRAM slot ranges which should not be used by
                 the driver, they are allocated to be used by for example the
                 DSP. See example.
@@ -56,7 +55,7 @@ edma: edma@49000000 {
         ti,tptcs = <&edma_tptc0 7>, <&edma_tptc1 7>, <&edma_tptc2 0>;
 
         /* Channel 20 and 21 is allocated for memcpy */
-        ti,edma-memcpy-channels = /bits/ 16 <20 21>;
+        ti,edma-memcpy-channels = <20 21>;
         /* The following PaRAM slots are reserved: 35-45 and 100-110 */
         ti,edma-reserved-slot-ranges = /bits/ 16 <35 10>,
                                        /bits/ 16 <100 10>;
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
index 6b03e4e84e6b..3da20291db56 100644
--- a/drivers/dma/edma.c
+++ b/drivers/dma/edma.c
@@ -1752,16 +1752,14 @@ static enum dma_status edma_tx_status(struct dma_chan *chan,
         return ret;
 }
 
-static bool edma_is_memcpy_channel(int ch_num, u16 *memcpy_channels)
+static bool edma_is_memcpy_channel(int ch_num, s32 *memcpy_channels)
 {
-        s16 *memcpy_ch = memcpy_channels;
-
         if (!memcpy_channels)
                 return false;
-        while (*memcpy_ch != -1) {
-                if (*memcpy_ch == ch_num)
+        while (*memcpy_channels != -1) {
+                if (*memcpy_channels == ch_num)
                         return true;
-                memcpy_ch++;
+                memcpy_channels++;
         }
         return false;
 }
@@ -1775,7 +1773,7 @@ static void edma_dma_init(struct edma_cc *ecc, bool legacy_mode)
 {
         struct dma_device *s_ddev = &ecc->dma_slave;
         struct dma_device *m_ddev = NULL;
-        s16 *memcpy_channels = ecc->info->memcpy_channels;
+        s32 *memcpy_channels = ecc->info->memcpy_channels;
         int i, j;
 
         dma_cap_zero(s_ddev->cap_mask);
@@ -1996,16 +1994,16 @@ static struct edma_soc_info *edma_setup_info_from_dt(struct device *dev,
         prop = of_find_property(dev->of_node, "ti,edma-memcpy-channels", &sz);
         if (prop) {
                 const char pname[] = "ti,edma-memcpy-channels";
-                size_t nelm = sz / sizeof(s16);
-                s16 *memcpy_ch;
+                size_t nelm = sz / sizeof(s32);
+                s32 *memcpy_ch;
 
-                memcpy_ch = devm_kcalloc(dev, nelm + 1, sizeof(s16),
+                memcpy_ch = devm_kcalloc(dev, nelm + 1, sizeof(s32),
                                          GFP_KERNEL);
                 if (!memcpy_ch)
                         return ERR_PTR(-ENOMEM);
 
-                ret = of_property_read_u16_array(dev->of_node, pname,
-                                                 (u16 *)memcpy_ch, nelm);
+                ret = of_property_read_u32_array(dev->of_node, pname,
+                                                 (u32 *)memcpy_ch, nelm);
                 if (ret)
                         return ERR_PTR(ret);
 
diff --git a/include/linux/platform_data/edma.h b/include/linux/platform_data/edma.h
index e2878baeb90e..4299f4ba03bd 100644
--- a/include/linux/platform_data/edma.h
+++ b/include/linux/platform_data/edma.h
@@ -72,7 +72,7 @@ struct edma_soc_info {
         struct edma_rsv_info    *rsv;
 
         /* List of channels allocated for memcpy, terminated with -1 */
-        s16                     *memcpy_channels;
+        s32                     *memcpy_channels;
 
         s8      (*queue_priority_mapping)[2];
         const s16       (*xbar_chans)[2];