mirror of
https://github.com/torvalds/linux.git
synced 2024-11-01 17:51:43 +00:00
48519f0ae0
Currently the EDMA queue to be used by for servicing ASP through internal RAM is fixed to EDMAQ_0 and that to service internal RAM from external RAM is fixed to EDMAQ_1. This may not be the desirable configuration on all platforms. For example, on DM365, queue 0 has large fifo size and is more suitable for video transfers. Having audio and video transfers on the same queue may lead to starvation on audio side. platform data as defined currently passes a queue number to the driver but that remains unused inside the driver. Fix this by defining one queue each for ASP and RAM transfers in the platform data and using it inside the driver. Since EDMAQ_0 maps to 0, thats the queue that will be used if the asp queue number is not initialized. None of the platforms currently utilize ping-pong transfers through internal RAM so that functionality remains unchanged too. This patch has been tested on DM644x and OMAP-L138 EVMs. Signed-off-by: Sekhar Nori <nsekhar@ti.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
138 lines
3.9 KiB
C
138 lines
3.9 KiB
C
/*
|
|
* <mach/asp.h> - DaVinci Audio Serial Port support
|
|
*/
|
|
#ifndef __ASM_ARCH_DAVINCI_ASP_H
|
|
#define __ASM_ARCH_DAVINCI_ASP_H
|
|
|
|
#include <mach/irqs.h>
|
|
#include <mach/edma.h>
|
|
|
|
/* Bases of dm644x and dm355 register banks */
|
|
#define DAVINCI_ASP0_BASE 0x01E02000
|
|
#define DAVINCI_ASP1_BASE 0x01E04000
|
|
|
|
/* Bases of dm365 register banks */
|
|
#define DAVINCI_DM365_ASP0_BASE 0x01D02000
|
|
|
|
/* Bases of dm646x register banks */
|
|
#define DAVINCI_DM646X_MCASP0_REG_BASE 0x01D01000
|
|
#define DAVINCI_DM646X_MCASP1_REG_BASE 0x01D01800
|
|
|
|
/* Bases of da850/da830 McASP0 register banks */
|
|
#define DAVINCI_DA8XX_MCASP0_REG_BASE 0x01D00000
|
|
|
|
/* Bases of da830 McASP1 register banks */
|
|
#define DAVINCI_DA830_MCASP1_REG_BASE 0x01D04000
|
|
|
|
/* EDMA channels of dm644x and dm355 */
|
|
#define DAVINCI_DMA_ASP0_TX 2
|
|
#define DAVINCI_DMA_ASP0_RX 3
|
|
#define DAVINCI_DMA_ASP1_TX 8
|
|
#define DAVINCI_DMA_ASP1_RX 9
|
|
|
|
/* EDMA channels of dm646x */
|
|
#define DAVINCI_DM646X_DMA_MCASP0_AXEVT0 6
|
|
#define DAVINCI_DM646X_DMA_MCASP0_AREVT0 9
|
|
#define DAVINCI_DM646X_DMA_MCASP1_AXEVT1 12
|
|
|
|
/* EDMA channels of da850/da830 McASP0 */
|
|
#define DAVINCI_DA8XX_DMA_MCASP0_AREVT 0
|
|
#define DAVINCI_DA8XX_DMA_MCASP0_AXEVT 1
|
|
|
|
/* EDMA channels of da830 McASP1 */
|
|
#define DAVINCI_DA830_DMA_MCASP1_AREVT 2
|
|
#define DAVINCI_DA830_DMA_MCASP1_AXEVT 3
|
|
|
|
/* Interrupts */
|
|
#define DAVINCI_ASP0_RX_INT IRQ_MBRINT
|
|
#define DAVINCI_ASP0_TX_INT IRQ_MBXINT
|
|
#define DAVINCI_ASP1_RX_INT IRQ_MBRINT
|
|
#define DAVINCI_ASP1_TX_INT IRQ_MBXINT
|
|
|
|
struct snd_platform_data {
|
|
u32 tx_dma_offset;
|
|
u32 rx_dma_offset;
|
|
enum dma_event_q asp_chan_q; /* event queue number for ASP channel */
|
|
enum dma_event_q ram_chan_q; /* event queue number for RAM channel */
|
|
unsigned int codec_fmt;
|
|
/*
|
|
* Allowing this is more efficient and eliminates left and right swaps
|
|
* caused by underruns, but will swap the left and right channels
|
|
* when compared to previous behavior.
|
|
*/
|
|
unsigned enable_channel_combine:1;
|
|
unsigned sram_size_playback;
|
|
unsigned sram_size_capture;
|
|
|
|
/*
|
|
* If McBSP peripheral gets the clock from an external pin,
|
|
* there are three chooses, that are MCBSP_CLKX, MCBSP_CLKR
|
|
* and MCBSP_CLKS.
|
|
* Depending on different hardware connections it is possible
|
|
* to use this setting to change the behaviour of McBSP
|
|
* driver. The dm365_clk_input_pin enum is available for dm365
|
|
*/
|
|
int clk_input_pin;
|
|
|
|
/*
|
|
* This flag works when both clock and FS are outputs for the cpu
|
|
* and makes clock more accurate (FS is not symmetrical and the
|
|
* clock is very fast.
|
|
* The clock becoming faster is named
|
|
* i2s continuous serial clock (I2S_SCK) and it is an externally
|
|
* visible bit clock.
|
|
*
|
|
* first line : WordSelect
|
|
* second line : ContinuousSerialClock
|
|
* third line: SerialData
|
|
*
|
|
* SYMMETRICAL APPROACH:
|
|
* _______________________ LEFT
|
|
* _| RIGHT |______________________|
|
|
* _ _ _ _ _ _ _ _
|
|
* _| |_| |_ x16 _| |_| |_| |_| |_ x16 _| |_| |_
|
|
* _ _ _ _ _ _ _ _
|
|
* _/ \_/ \_ ... _/ \_/ \_/ \_/ \_ ... _/ \_/ \_
|
|
* \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/
|
|
*
|
|
* ACCURATE CLOCK APPROACH:
|
|
* ______________ LEFT
|
|
* _| RIGHT |_______________________________|
|
|
* _ _ _ _ _ _ _ _ _
|
|
* _| |_ x16 _| |_| |_ x16 _| |_| |_| |_| |_| |_| |
|
|
* _ _ _ _ dummy cycles
|
|
* _/ \_ ... _/ \_/ \_ ... _/ \__________________
|
|
* \_/ \_/ \_/ \_/
|
|
*
|
|
*/
|
|
bool i2s_accurate_sck;
|
|
|
|
/* McASP specific fields */
|
|
int tdm_slots;
|
|
u8 op_mode;
|
|
u8 num_serializer;
|
|
u8 *serial_dir;
|
|
u8 version;
|
|
u8 txnumevt;
|
|
u8 rxnumevt;
|
|
};
|
|
|
|
enum {
|
|
MCASP_VERSION_1 = 0, /* DM646x */
|
|
MCASP_VERSION_2, /* DA8xx/OMAPL1x */
|
|
};
|
|
|
|
enum dm365_clk_input_pin {
|
|
MCBSP_CLKR = 0, /* DM365 */
|
|
MCBSP_CLKS,
|
|
};
|
|
|
|
#define INACTIVE_MODE 0
|
|
#define TX_MODE 1
|
|
#define RX_MODE 2
|
|
|
|
#define DAVINCI_MCASP_IIS_MODE 0
|
|
#define DAVINCI_MCASP_DIT_MODE 1
|
|
|
|
#endif /* __ASM_ARCH_DAVINCI_ASP_H */
|