diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-davinci/board-dm365-evm.c | 4 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/mcbsp.h | 6 | ||||
| -rw-r--r-- | arch/arm/plat-omap/mcbsp.c | 55 |
3 files changed, 65 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/board-dm365-evm.c b/arch/arm/mach-davinci/board-dm365-evm.c index d15beceb632..512174a874a 100644 --- a/arch/arm/mach-davinci/board-dm365-evm.c +++ b/arch/arm/mach-davinci/board-dm365-evm.c @@ -604,7 +604,11 @@ static __init void dm365_evm_init(void) /* maybe setup mmc1/etc ... _after_ mmc0 */ evm_init_cpld(); +#ifdef CONFIG_SND_DM365_AIC3X_CODEC dm365_init_asp(&dm365_evm_snd_data); +#elif defined(CONFIG_SND_DM365_VOICE_CODEC) + dm365_init_vc(&dm365_evm_snd_data); +#endif dm365_init_rtc(); dm365_init_ks(&dm365evm_ks_data); diff --git a/arch/arm/plat-omap/include/plat/mcbsp.h b/arch/arm/plat-omap/include/plat/mcbsp.h index 39748354ce4..1bd7021336c 100644 --- a/arch/arm/plat-omap/include/plat/mcbsp.h +++ b/arch/arm/plat-omap/include/plat/mcbsp.h @@ -149,6 +149,8 @@ #define OMAP_MCBSP_REG_WAKEUPEN 0xA8 #define OMAP_MCBSP_REG_XCCR 0xAC #define OMAP_MCBSP_REG_RCCR 0xB0 +#define OMAP_MCBSP_REG_XBUFFSTAT 0xB4 +#define OMAP_MCBSP_REG_RBUFFSTAT 0xB8 #define OMAP_MCBSP_REG_SSELCR 0xBC #define OMAP_ST_REG_REV 0x00 @@ -471,6 +473,8 @@ void omap_mcbsp_set_tx_threshold(unsigned int id, u16 threshold); void omap_mcbsp_set_rx_threshold(unsigned int id, u16 threshold); u16 omap_mcbsp_get_max_tx_threshold(unsigned int id); u16 omap_mcbsp_get_max_rx_threshold(unsigned int id); +u16 omap_mcbsp_get_tx_delay(unsigned int id); +u16 omap_mcbsp_get_rx_delay(unsigned int id); int omap_mcbsp_get_dma_op_mode(unsigned int id); #else static inline void omap_mcbsp_set_tx_threshold(unsigned int id, u16 threshold) @@ -479,6 +483,8 @@ static inline void omap_mcbsp_set_rx_threshold(unsigned int id, u16 threshold) { } static inline u16 omap_mcbsp_get_max_tx_threshold(unsigned int id) { return 0; } static inline u16 omap_mcbsp_get_max_rx_threshold(unsigned int id) { return 0; } +static inline u16 omap_mcbsp_get_tx_delay(unsigned int id) { return 0; } +static inline u16 omap_mcbsp_get_rx_delay(unsigned int id) { return 0; } static inline int omap_mcbsp_get_dma_op_mode(unsigned int id) { return 0; } #endif int omap_mcbsp_request(unsigned int id); diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c index 52dfcc81511..4ff7a11b183 100644 --- a/arch/arm/plat-omap/mcbsp.c +++ b/arch/arm/plat-omap/mcbsp.c @@ -559,6 +559,61 @@ u16 omap_mcbsp_get_max_rx_threshold(unsigned int id) } EXPORT_SYMBOL(omap_mcbsp_get_max_rx_threshold); +#define MCBSP2_FIFO_SIZE 0x500 /* 1024 + 256 locations */ +#define MCBSP1345_FIFO_SIZE 0x80 /* 128 locations */ +/* + * omap_mcbsp_get_tx_delay returns the number of used slots in the McBSP FIFO + */ +u16 omap_mcbsp_get_tx_delay(unsigned int id) +{ + struct omap_mcbsp *mcbsp; + u16 buffstat; + + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); + return -ENODEV; + } + mcbsp = id_to_mcbsp_ptr(id); + + /* Returns the number of free locations in the buffer */ + buffstat = MCBSP_READ(mcbsp, XBUFFSTAT); + + /* Number of slots are different in McBSP ports */ + if (mcbsp->id == 2) + return MCBSP2_FIFO_SIZE - buffstat; + else + return MCBSP1345_FIFO_SIZE - buffstat; +} +EXPORT_SYMBOL(omap_mcbsp_get_tx_delay); + +/* + * omap_mcbsp_get_rx_delay returns the number of free slots in the McBSP FIFO + * to reach the threshold value (when the DMA will be triggered to read it) + */ +u16 omap_mcbsp_get_rx_delay(unsigned int id) +{ + struct omap_mcbsp *mcbsp; + u16 buffstat, threshold; + + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); + return -ENODEV; + } + mcbsp = id_to_mcbsp_ptr(id); + + /* Returns the number of used locations in the buffer */ + buffstat = MCBSP_READ(mcbsp, RBUFFSTAT); + /* RX threshold */ + threshold = MCBSP_READ(mcbsp, THRSH1); + + /* Return the number of location till we reach the threshold limit */ + if (threshold <= buffstat) + return 0; + else + return threshold - buffstat; +} +EXPORT_SYMBOL(omap_mcbsp_get_rx_delay); + /* * omap_mcbsp_get_dma_op_mode just return the current configured * operating mode for the mcbsp channel |