Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: (48 commits)
  DMAENGINE: move COH901318 to arch_initcall
  dma: imx-dma: fix signedness bug
  dma/timberdale: simplify conditional
  ste_dma40: remove channel_type
  ste_dma40: remove enum for endianess
  ste_dma40: remove TIM_FOR_LINK option
  ste_dma40: move mode_opt to separate config
  ste_dma40: move channel mode to a separate field
  ste_dma40: move priority to separate field
  ste_dma40: add variable to indicate valid dma_cfg
  async_tx: make async_tx channel switching opt-in
  move async raid6 test to lib/Kconfig.debug
  dmaengine: Add Freescale i.MX1/21/27 DMA driver
  intel_mid_dma: change the slave interface
  intel_mid_dma: fix the WARN_ONs
  intel_mid_dma: Add sg list support to DMA driver
  intel_mid_dma: Allow DMAC2 to share interrupt
  intel_mid_dma: Allow IRQ sharing
  intel_mid_dma: Add runtime PM support
  DMAENGINE: define a dummy filter function for ste_dma40
  ...

1 files changed, 60 insertions, 74 deletions

diff --git a/arch/arm/plat-nomadik/include/plat/ste_dma40.h b/arch/arm/plat-nomadik/include/plat/ste_dma40.h
index 93a812672d9a..74b62f10d07f 100644
--- a/arch/arm/plat-nomadik/include/plat/ste_dma40.h
+++ b/arch/arm/plat-nomadik/include/plat/ste_dma40.h
@@ -1,10 +1,8 @@
 /*
- * arch/arm/plat-nomadik/include/plat/ste_dma40.h
- *
- * Copyright (C) ST-Ericsson 2007-2010
+ * Copyright (C) ST-Ericsson SA 2007-2010
+ * Author: Per Forlin <per.forlin@stericsson.com> for ST-Ericsson
+ * Author: Jonas Aaberg <jonas.aberg@stericsson.com> for ST-Ericsson
  * License terms: GNU General Public License (GPL) version 2
- * Author: Per Friden <per.friden@stericsson.com>
- * Author: Jonas Aaberg <jonas.aberg@stericsson.com>
  */
 
 
@@ -19,37 +17,20 @@
 #define STEDMA40_DEV_DST_MEMORY (-1)
 #define STEDMA40_DEV_SRC_MEMORY (-1)
 
-/*
- * Description of bitfields of channel_type variable is available in
- * the info structure.
- */
+enum stedma40_mode {
+        STEDMA40_MODE_LOGICAL = 0,
+        STEDMA40_MODE_PHYSICAL,
+        STEDMA40_MODE_OPERATION,
+};
 
-/* Priority */
-#define STEDMA40_INFO_PRIO_TYPE_POS 2
-#define STEDMA40_HIGH_PRIORITY_CHANNEL (0x1 << STEDMA40_INFO_PRIO_TYPE_POS)
-#define STEDMA40_LOW_PRIORITY_CHANNEL (0x2 << STEDMA40_INFO_PRIO_TYPE_POS)
-
-/* Mode  */
-#define STEDMA40_INFO_CH_MODE_TYPE_POS 6
-#define STEDMA40_CHANNEL_IN_PHY_MODE (0x1 << STEDMA40_INFO_CH_MODE_TYPE_POS)
-#define STEDMA40_CHANNEL_IN_LOG_MODE (0x2 << STEDMA40_INFO_CH_MODE_TYPE_POS)
-#define STEDMA40_CHANNEL_IN_OPER_MODE (0x3 << STEDMA40_INFO_CH_MODE_TYPE_POS)
-
-/* Mode options */
-#define STEDMA40_INFO_CH_MODE_OPT_POS 8
-#define STEDMA40_PCHAN_BASIC_MODE (0x1 << STEDMA40_INFO_CH_MODE_OPT_POS)
-#define STEDMA40_PCHAN_MODULO_MODE (0x2 << STEDMA40_INFO_CH_MODE_OPT_POS)
-#define STEDMA40_PCHAN_DOUBLE_DST_MODE (0x3 << STEDMA40_INFO_CH_MODE_OPT_POS)
-#define STEDMA40_LCHAN_SRC_PHY_DST_LOG (0x1 << STEDMA40_INFO_CH_MODE_OPT_POS)
-#define STEDMA40_LCHAN_SRC_LOG_DST_PHS (0x2 << STEDMA40_INFO_CH_MODE_OPT_POS)
-#define STEDMA40_LCHAN_SRC_LOG_DST_LOG (0x3 << STEDMA40_INFO_CH_MODE_OPT_POS)
-
-/* Interrupt */
-#define STEDMA40_INFO_TIM_POS 10
-#define STEDMA40_NO_TIM_FOR_LINK (0x0 << STEDMA40_INFO_TIM_POS)
-#define STEDMA40_TIM_FOR_LINK (0x1 << STEDMA40_INFO_TIM_POS)
-
-/* End of channel_type configuration */
+enum stedma40_mode_opt {
+        STEDMA40_PCHAN_BASIC_MODE = 0,
+        STEDMA40_LCHAN_SRC_LOG_DST_LOG = 0,
+        STEDMA40_PCHAN_MODULO_MODE,
+        STEDMA40_PCHAN_DOUBLE_DST_MODE,
+        STEDMA40_LCHAN_SRC_PHY_DST_LOG,
+        STEDMA40_LCHAN_SRC_LOG_DST_PHY,
+};
 
 #define STEDMA40_ESIZE_8_BIT  0x0
 #define STEDMA40_ESIZE_16_BIT 0x1
@@ -72,16 +53,14 @@
 #define STEDMA40_PSIZE_LOG_8  STEDMA40_PSIZE_PHY_8
 #define STEDMA40_PSIZE_LOG_16 STEDMA40_PSIZE_PHY_16
 
+/* Maximum number of possible physical channels */
+#define STEDMA40_MAX_PHYS 32
+
 enum stedma40_flow_ctrl {
         STEDMA40_NO_FLOW_CTRL,
         STEDMA40_FLOW_CTRL,
 };
 
-enum stedma40_endianess {
-        STEDMA40_LITTLE_ENDIAN,
-        STEDMA40_BIG_ENDIAN
-};
-
 enum stedma40_periph_data_width {
         STEDMA40_BYTE_WIDTH = STEDMA40_ESIZE_8_BIT,
         STEDMA40_HALFWORD_WIDTH = STEDMA40_ESIZE_16_BIT,
@@ -89,15 +68,8 @@ enum stedma40_periph_data_width {
         STEDMA40_DOUBLEWORD_WIDTH = STEDMA40_ESIZE_64_BIT
 };
 
-struct stedma40_half_channel_info {
-        enum stedma40_endianess endianess;
-        enum stedma40_periph_data_width data_width;
-        int psize;
-        enum stedma40_flow_ctrl flow_ctrl;
-};
-
 enum stedma40_xfer_dir {
-        STEDMA40_MEM_TO_MEM,
+        STEDMA40_MEM_TO_MEM = 1,
         STEDMA40_MEM_TO_PERIPH,
         STEDMA40_PERIPH_TO_MEM,
         STEDMA40_PERIPH_TO_PERIPH
@@ -105,18 +77,31 @@ enum stedma40_xfer_dir {
 
 
 /**
+ * struct stedma40_chan_cfg - dst/src channel configuration
+ *
+ * @big_endian: true if the src/dst should be read as big endian
+ * @data_width: Data width of the src/dst hardware
+ * @p_size: Burst size
+ * @flow_ctrl: Flow control on/off.
+ */
+struct stedma40_half_channel_info {
+        bool big_endian;
+        enum stedma40_periph_data_width data_width;
+        int psize;
+        enum stedma40_flow_ctrl flow_ctrl;
+};
+
+/**
  * struct stedma40_chan_cfg - Structure to be filled by client drivers.
  *
  * @dir: MEM 2 MEM, PERIPH 2 MEM , MEM 2 PERIPH, PERIPH 2 PERIPH
- * @channel_type: priority, mode, mode options and interrupt configuration.
+ * @high_priority: true if high-priority
+ * @mode: channel mode: physical, logical, or operation
+ * @mode_opt: options for the chosen channel mode
  * @src_dev_type: Src device type
  * @dst_dev_type: Dst device type
  * @src_info: Parameters for dst half channel
  * @dst_info: Parameters for dst half channel
- * @pre_transfer_data: Data to be passed on to the pre_transfer() function.
- * @pre_transfer: Callback used if needed before preparation of transfer.
- * Only called if device is set. size of bytes to transfer
- * (in case of multiple element transfer size is size of the first element).
  *
  *
  * This structure has to be filled by the client drivers.
@@ -125,15 +110,13 @@ enum stedma40_xfer_dir {
  */
 struct stedma40_chan_cfg {
         enum stedma40_xfer_dir                   dir;
-        unsigned int                             channel_type;
+        bool                                     high_priority;
+        enum stedma40_mode                       mode;
+        enum stedma40_mode_opt                   mode_opt;
         int                                      src_dev_type;
         int                                      dst_dev_type;
         struct stedma40_half_channel_info        src_info;
         struct stedma40_half_channel_info        dst_info;
-        void                                    *pre_transfer_data;
-        int (*pre_transfer)                     (struct dma_chan *chan,
-                                                 void *data,
-                                                 int size);
 };
 
 /**
@@ -146,7 +129,6 @@ struct stedma40_chan_cfg {
  * @memcpy_len: length of memcpy
  * @memcpy_conf_phy: default configuration of physical channel memcpy
  * @memcpy_conf_log: default configuration of logical channel memcpy
- * @llis_per_log: number of max linked list items per logical channel
  * @disabled_channels: A vector, ending with -1, that marks physical channels
  * that are for different reasons not available for the driver.
  */
@@ -158,23 +140,10 @@ struct stedma40_platform_data {
         u32                              memcpy_len;
         struct stedma40_chan_cfg        *memcpy_conf_phy;
         struct stedma40_chan_cfg        *memcpy_conf_log;
-        unsigned int                     llis_per_log;
-        int                              disabled_channels[8];
+        int                              disabled_channels[STEDMA40_MAX_PHYS];
 };
 
-/**
- * setdma40_set_psize() - Used for changing the package size of an
- * already configured dma channel.
- *
- * @chan: dmaengine handle
- * @src_psize: new package side for src. (STEDMA40_PSIZE*)
- * @src_psize: new package side for dst. (STEDMA40_PSIZE*)
- *
- * returns 0 on ok, otherwise negative error number.
- */
-int stedma40_set_psize(struct dma_chan *chan,
-                       int src_psize,
-                       int dst_psize);
+#ifdef CONFIG_STE_DMA40
 
 /**
  * stedma40_filter() - Provides stedma40_chan_cfg to the
@@ -237,4 +206,21 @@ dma_async_tx_descriptor *stedma40_slave_mem(struct dma_chan *chan,
                                                   direction, flags);
 }
 
+#else
+static inline bool stedma40_filter(struct dma_chan *chan, void *data)
+{
+        return false;
+}
+
+static inline struct
+dma_async_tx_descriptor *stedma40_slave_mem(struct dma_chan *chan,
+                                            dma_addr_t addr,
+                                            unsigned int size,
+                                            enum dma_data_direction direction,
+                                            unsigned long flags)
+{
+        return NULL;
+}
+#endif
+
 #endif