dmaengine: ste_dma40: Assign memcpy channels in the driver

The channels reserved for memcpy are the same for all currently
supported platforms. With this in mind, we can ease the platform
data passing requirement by moving these assignments out from
platform code and place them directly into the driver.

Acked-by: Vinod Koul <vnod.koul@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

3 files changed, 7 insertions, 21 deletions

diff --git a/arch/arm/mach-ux500/devices-db8500.c b/arch/arm/mach-ux500/devices-db8500.c
index 1cf94ce0feec..159855fae55b 100644
--- a/arch/arm/mach-ux500/devices-db8500.c
+++ b/arch/arm/mach-ux500/devices-db8500.c
@@ -146,22 +146,10 @@ static const dma_addr_t dma40_rx_map[DB8500_DMA_NR_DEV] = {
         [DB8500_DMA_DEV48_CAC1_RX] = U8500_CRYP1_BASE + CRYP1_RX_REG_OFFSET,
 };
 
-/* Reserved event lines for memcpy only */
-static int dma40_memcpy_event[] = {
-        DB8500_DMA_MEMCPY_TX_0,
-        DB8500_DMA_MEMCPY_TX_1,
-        DB8500_DMA_MEMCPY_TX_2,
-        DB8500_DMA_MEMCPY_TX_3,
-        DB8500_DMA_MEMCPY_TX_4,
-        DB8500_DMA_MEMCPY_TX_5,
-};
-
 static struct stedma40_platform_data dma40_plat_data = {
         .dev_len = DB8500_DMA_NR_DEV,
         .dev_rx = dma40_rx_map,
         .dev_tx = dma40_tx_map,
-        .memcpy = dma40_memcpy_event,
-        .memcpy_len = ARRAY_SIZE(dma40_memcpy_event),
         .memcpy_conf_phy = &dma40_memcpy_conf_phy,
         .memcpy_conf_log = &dma40_memcpy_conf_log,
         .disabled_channels = {-1},
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 1734feec47b1..12de79e84b15 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -55,6 +55,9 @@
 
 #define MAX(a, b) (((a) < (b)) ? (b) : (a))
 
+/* Reserved event lines for memcpy only. */
+static int dma40_memcpy_channels[] = { 56, 57, 58, 59, 60 };
+
 /**
  * enum 40_command - The different commands and/or statuses.
  *
@@ -2014,8 +2017,7 @@ static int d40_config_memcpy(struct d40_chan *d40c)
         if (dma_has_cap(DMA_MEMCPY, cap) && !dma_has_cap(DMA_SLAVE, cap)) {
                 d40c->dma_cfg = *d40c->base->plat_data->memcpy_conf_log;
                 d40c->dma_cfg.src_dev_type = STEDMA40_DEV_SRC_MEMORY;
-                d40c->dma_cfg.dst_dev_type = d40c->base->plat_data->
-                        memcpy[d40c->chan.chan_id];
+                d40c->dma_cfg.dst_dev_type = dma40_memcpy_channels[d40c->chan.chan_id];
 
         } else if (dma_has_cap(DMA_MEMCPY, cap) &&
                    dma_has_cap(DMA_SLAVE, cap)) {
@@ -2927,7 +2929,7 @@ static int __init d40_dmaengine_init(struct d40_base *base,
         }
 
         d40_chan_init(base, &base->dma_memcpy, base->log_chans,
-                      base->num_log_chans, base->plat_data->memcpy_len);
+                      base->num_log_chans, ARRAY_SIZE(dma40_memcpy_channels));
 
         dma_cap_zero(base->dma_memcpy.cap_mask);
         dma_cap_set(DMA_MEMCPY, base->dma_memcpy.cap_mask);
@@ -3215,7 +3217,7 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev)
                         num_log_chans++;
 
         base = kzalloc(ALIGN(sizeof(struct d40_base), 4) +
-                       (num_phy_chans + num_log_chans + plat_data->memcpy_len) *
+                       (num_phy_chans + num_log_chans + ARRAY_SIZE(dma40_memcpy_channels)) *
                        sizeof(struct d40_chan), GFP_KERNEL);
 
         if (base == NULL) {
@@ -3276,7 +3278,7 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev)
         if (!base->lookup_phy_chans)
                 goto failure;
 
-        if (num_log_chans + plat_data->memcpy_len) {
+        if (num_log_chans + ARRAY_SIZE(dma40_memcpy_channels)) {
                 /*
                  * The max number of logical channels are event lines for all
                  * src devices and dst devices
diff --git a/include/linux/platform_data/dma-ste-dma40.h b/include/linux/platform_data/dma-ste-dma40.h
index 4b781014b0a0..a8087843a99b 100644
--- a/include/linux/platform_data/dma-ste-dma40.h
+++ b/include/linux/platform_data/dma-ste-dma40.h
@@ -141,8 +141,6 @@ struct stedma40_chan_cfg {
  * @dev_len: length of dev_tx and dev_rx
  * @dev_tx: mapping between destination event line and io address
  * @dev_rx: mapping between source event line and io address
- * @memcpy: list of memcpy event lines
- * @memcpy_len: length of memcpy
  * @memcpy_conf_phy: default configuration of physical channel memcpy
  * @memcpy_conf_log: default configuration of logical channel memcpy
  * @disabled_channels: A vector, ending with -1, that marks physical channels
@@ -162,8 +160,6 @@ struct stedma40_platform_data {
         u32                              dev_len;
         const dma_addr_t                *dev_tx;
         const dma_addr_t                *dev_rx;
-        int                             *memcpy;
-        u32                              memcpy_len;
         struct stedma40_chan_cfg        *memcpy_conf_phy;
         struct stedma40_chan_cfg        *memcpy_conf_log;
         int                              disabled_channels[STEDMA40_MAX_PHYS];