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Second set of DMA40 changes: refactorings and device tree

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support for the DMA40. Now with MUSB and some platform
 data removal.
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Merge tag 'ux500-dma40-for-arm-soc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into next/drivers

From Linus Walleij:
Second set of DMA40 changes: refactorings and device tree
support for the DMA40. Now with MUSB and some platform
data removal.

* tag 'ux500-dma40-for-arm-soc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson:
  dmaengine: ste_dma40: Fetch disabled channels from DT
  dmaengine: ste_dma40: Fetch the number of physical channels from DT
  ARM: ux500: Stop passing DMA platform data though AUXDATA
  dmaengine: ste_dma40: Allow memcpy channels to be configured from DT
  dmaengine: ste_dma40_ll: Replace meaningless register set with comment
  dmaengine: ste_dma40: Convert data_width from register bit format to value
  dmaengine: ste_dma40_ll: Use the BIT macro to replace ugly '(1 << x)'s
  ARM: ux500: Remove recently unused stedma40_xfer_dir enums
  dmaengine: ste_dma40: Replace ST-E's home-brew DMA direction defs with generic ones
  ARM: ux500: Replace ST-E's home-brew DMA direction definition with the generic one
  dmaengine: ste_dma40: Use the BIT macro to replace ugly '(1 << x)'s
  ARM: ux500: Remove empty function u8500_of_init_devices()
  ARM: ux500: Remove ux500-musb platform registation when booting with DT
  usb: musb: ux500: add device tree probing support
  usb: musb: ux500: attempt to find channels by name before using pdata
  usb: musb: ux500: harden checks for platform data
  usb: musb: ux500: take the dma_mask from coherent_dma_mask
  usb: musb: ux500: move the MUSB HDRC configuration into the driver
  usb: musb: ux500: move channel number knowledge into the driver
This commit is contained in:
Olof Johansson 2013-06-14 16:53:54 -07:00
commit 2c3165ebb6
14 changed files with 374 additions and 250 deletions
Download patch file Download diff file Expand all files Collapse all files

21
include/linux/platform_data/dma-ste-dma40.h
View file

@ -70,21 +70,6 @@ enum stedma40_flow_ctrl {
STEDMA40_FLOW_CTRL,
};
enum stedma40_periph_data_width {
STEDMA40_BYTE_WIDTH = STEDMA40_ESIZE_8_BIT,
STEDMA40_HALFWORD_WIDTH = STEDMA40_ESIZE_16_BIT,
STEDMA40_WORD_WIDTH = STEDMA40_ESIZE_32_BIT,
STEDMA40_DOUBLEWORD_WIDTH = STEDMA40_ESIZE_64_BIT
};
enum stedma40_xfer_dir {
STEDMA40_MEM_TO_MEM = 1,
STEDMA40_MEM_TO_PERIPH,
STEDMA40_PERIPH_TO_MEM,
STEDMA40_PERIPH_TO_PERIPH
};
/**
* struct stedma40_half_channel_info - dst/src channel configuration
*
@ -95,7 +80,7 @@ enum stedma40_xfer_dir {
*/
struct stedma40_half_channel_info {
bool big_endian;
enum stedma40_periph_data_width data_width;
enum dma_slave_buswidth data_width;
int psize;
enum stedma40_flow_ctrl flow_ctrl;
};
@ -120,7 +105,7 @@ struct stedma40_half_channel_info {
*
*/
struct stedma40_chan_cfg {
enum stedma40_xfer_dir dir;
enum dma_transfer_direction dir;
bool high_priority;
bool realtime;
enum stedma40_mode mode;
@ -147,6 +132,7 @@ struct stedma40_chan_cfg {
* @num_of_soft_lli_chans: The number of channels that needs to be configured
* to use SoftLLI.
* @use_esram_lcla: flag for mapping the lcla into esram region
* @num_of_memcpy_chans: The number of channels reserved for memcpy.
* @num_of_phy_chans: The number of physical channels implemented in HW.
* 0 means reading the number of channels from DMA HW but this is only valid
* for 'multiple of 4' channels, like 8.
@ -156,6 +142,7 @@ struct stedma40_platform_data {
int *soft_lli_chans;
int num_of_soft_lli_chans;
bool use_esram_lcla;
int num_of_memcpy_chans;
int num_of_phy_chans;
};

5
include/linux/platform_data/usb-musb-ux500.h
View file

@ -9,14 +9,11 @@
#include <linux/dmaengine.h>
#define UX500_MUSB_DMA_NUM_RX_CHANNELS 8
#define UX500_MUSB_DMA_NUM_TX_CHANNELS 8
#define UX500_MUSB_DMA_NUM_RX_TX_CHANNELS 8
struct ux500_musb_board_data {
void **dma_rx_param_array;
void **dma_tx_param_array;
u32 num_rx_channels;
u32 num_tx_channels;
bool (*dma_filter)(struct dma_chan *chan, void *filter_param);
};