SH: constify multiple DMA related objects and references to them

Lists of DMA channels and slaves are not changed, make them constant. Besides,
SH7724 channel and slave configuration of both DMA controllers is identical,
remove the extra copy of the configuration data.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

5 files changed, 18 insertions, 58 deletions

diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7722.c b/arch/sh/kernel/cpu/sh4a/setup-sh7722.c
index dc9b30d086a4..24c6167a7181 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7722.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7722.c
@@ -24,7 +24,7 @@
 #include <cpu/dma-register.h>
 #include <cpu/sh7722.h>
 
-static struct sh_dmae_slave_config sh7722_dmae_slaves[] = {
+static const struct sh_dmae_slave_config sh7722_dmae_slaves[] = {
         {
                 .slave_id       = SHDMA_SLAVE_SCIF0_TX,
                 .addr           = 0xffe0000c,
@@ -78,7 +78,7 @@ static struct sh_dmae_slave_config sh7722_dmae_slaves[] = {
         },
 };
 
-static struct sh_dmae_channel sh7722_dmae_channels[] = {
+static const struct sh_dmae_channel sh7722_dmae_channels[] = {
         {
                 .offset = 0,
                 .dmars = 0,
@@ -106,7 +106,7 @@ static struct sh_dmae_channel sh7722_dmae_channels[] = {
         }
 };
 
-static unsigned int ts_shift[] = TS_SHIFT;
+static const unsigned int ts_shift[] = TS_SHIFT;
 
 static struct sh_dmae_pdata dma_platform_data = {
         .slave          = sh7722_dmae_slaves,
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7724.c b/arch/sh/kernel/cpu/sh4a/setup-sh7724.c
index 8a0a4a99f86b..89fe16d20fdb 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7724.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7724.c
@@ -31,7 +31,7 @@
 #include <cpu/sh7724.h>
 
 /* DMA */
-static struct sh_dmae_channel sh7724_dmae0_channels[] = {
+static const struct sh_dmae_channel sh7724_dmae_channels[] = {
         {
                 .offset = 0,
                 .dmars = 0,
@@ -59,51 +59,11 @@ static struct sh_dmae_channel sh7724_dmae0_channels[] = {
         }
 };
 
-static struct sh_dmae_channel sh7724_dmae1_channels[] = {
-        {
-                .offset = 0,
-                .dmars = 0,
-                .dmars_bit = 0,
-        }, {
-                .offset = 0x10,
-                .dmars = 0,
-                .dmars_bit = 8,
-        }, {
-                .offset = 0x20,
-                .dmars = 4,
-                .dmars_bit = 0,
-        }, {
-                .offset = 0x30,
-                .dmars = 4,
-                .dmars_bit = 8,
-        }, {
-                .offset = 0x50,
-                .dmars = 8,
-                .dmars_bit = 0,
-        }, {
-                .offset = 0x60,
-                .dmars = 8,
-                .dmars_bit = 8,
-        }
-};
-
-static unsigned int ts_shift[] = TS_SHIFT;
-
-static struct sh_dmae_pdata dma0_platform_data = {
-        .channel        = sh7724_dmae0_channels,
-        .channel_num    = ARRAY_SIZE(sh7724_dmae0_channels),
-        .ts_low_shift   = CHCR_TS_LOW_SHIFT,
-        .ts_low_mask    = CHCR_TS_LOW_MASK,
-        .ts_high_shift  = CHCR_TS_HIGH_SHIFT,
-        .ts_high_mask   = CHCR_TS_HIGH_MASK,
-        .ts_shift       = ts_shift,
-        .ts_shift_num   = ARRAY_SIZE(ts_shift),
-        .dmaor_init     = DMAOR_INIT,
-};
+static const unsigned int ts_shift[] = TS_SHIFT;
 
-static struct sh_dmae_pdata dma1_platform_data = {
-        .channel        = sh7724_dmae1_channels,
-        .channel_num    = ARRAY_SIZE(sh7724_dmae1_channels),
+static struct sh_dmae_pdata dma_platform_data = {
+        .channel        = sh7724_dmae_channels,
+        .channel_num    = ARRAY_SIZE(sh7724_dmae_channels),
         .ts_low_shift   = CHCR_TS_LOW_SHIFT,
         .ts_low_mask    = CHCR_TS_LOW_MASK,
         .ts_high_shift  = CHCR_TS_HIGH_SHIFT,
@@ -187,7 +147,7 @@ static struct platform_device dma0_device = {
         .resource       = sh7724_dmae0_resources,
         .num_resources  = ARRAY_SIZE(sh7724_dmae0_resources),
         .dev            = {
-                .platform_data  = &dma0_platform_data,
+                .platform_data  = &dma_platform_data,
         },
         .archdata = {
                 .hwblk_id = HWBLK_DMAC0,
@@ -200,7 +160,7 @@ static struct platform_device dma1_device = {
         .resource       = sh7724_dmae1_resources,
         .num_resources  = ARRAY_SIZE(sh7724_dmae1_resources),
         .dev            = {
-                .platform_data  = &dma1_platform_data,
+                .platform_data  = &dma_platform_data,
         },
         .archdata = {
                 .hwblk_id = HWBLK_DMAC1,
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7780.c b/arch/sh/kernel/cpu/sh4a/setup-sh7780.c
index 05fc38df1582..b12f537e4dde 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7780.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7780.c
@@ -233,7 +233,7 @@ static struct platform_device rtc_device = {
 };
 
 /* DMA */
-static struct sh_dmae_channel sh7780_dmae0_channels[] = {
+static const struct sh_dmae_channel sh7780_dmae0_channels[] = {
         {
                 .offset = 0,
                 .dmars = 0,
@@ -261,7 +261,7 @@ static struct sh_dmae_channel sh7780_dmae0_channels[] = {
         }
 };
 
-static struct sh_dmae_channel sh7780_dmae1_channels[] = {
+static const struct sh_dmae_channel sh7780_dmae1_channels[] = {
         {
                 .offset = 0,
         }, {
@@ -277,7 +277,7 @@ static struct sh_dmae_channel sh7780_dmae1_channels[] = {
         }
 };
 
-static unsigned int ts_shift[] = TS_SHIFT;
+static const unsigned int ts_shift[] = TS_SHIFT;
 
 static struct sh_dmae_pdata dma0_platform_data = {
         .channel        = sh7780_dmae0_channels,
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7785.c b/arch/sh/kernel/cpu/sh4a/setup-sh7785.c
index 07bb2d4619f8..f3e3ea0ce050 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7785.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7785.c
@@ -275,7 +275,7 @@ static struct platform_device tmu5_device = {
 };
 
 /* DMA */
-static struct sh_dmae_channel sh7785_dmae0_channels[] = {
+static const struct sh_dmae_channel sh7785_dmae0_channels[] = {
         {
                 .offset = 0,
                 .dmars = 0,
@@ -303,7 +303,7 @@ static struct sh_dmae_channel sh7785_dmae0_channels[] = {
         }
 };
 
-static struct sh_dmae_channel sh7785_dmae1_channels[] = {
+static const struct sh_dmae_channel sh7785_dmae1_channels[] = {
         {
                 .offset = 0,
         }, {
@@ -319,7 +319,7 @@ static struct sh_dmae_channel sh7785_dmae1_channels[] = {
         }
 };
 
-static unsigned int ts_shift[] = TS_SHIFT;
+static const unsigned int ts_shift[] = TS_SHIFT;
 
 static struct sh_dmae_pdata dma0_platform_data = {
         .channel        = sh7785_dmae0_channels,
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7786.c b/arch/sh/kernel/cpu/sh4a/setup-sh7786.c
index d7336036d04d..81657091da46 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7786.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7786.c
@@ -445,7 +445,7 @@ static struct platform_device tmu11_device = {
         .num_resources  = ARRAY_SIZE(tmu11_resources),
 };
 
-static struct sh_dmae_channel dmac0_channels[] = {
+static const struct sh_dmae_channel dmac0_channels[] = {
         {
                 .offset = 0,
                 .dmars = 0,
@@ -473,7 +473,7 @@ static struct sh_dmae_channel dmac0_channels[] = {
         }
 };
 
-static unsigned int ts_shift[] = TS_SHIFT;
+static const unsigned int ts_shift[] = TS_SHIFT;
 
 static struct sh_dmae_pdata dma0_platform_data = {
         .channel        = dmac0_channels,