aboutsummaryrefslogtreecommitdiffstats
path: root/sound/soc/pxa/pxa2xx-i2s.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/soc/pxa/pxa2xx-i2s.c')
-rw-r--r--sound/soc/pxa/pxa2xx-i2s.c44
1 files changed, 42 insertions, 2 deletions
diff --git a/sound/soc/pxa/pxa2xx-i2s.c b/sound/soc/pxa/pxa2xx-i2s.c
index c796b1882776..ad4c31ddb3d4 100644
--- a/sound/soc/pxa/pxa2xx-i2s.c
+++ b/sound/soc/pxa/pxa2xx-i2s.c
@@ -30,6 +30,46 @@
30#include "pxa2xx-pcm.h" 30#include "pxa2xx-pcm.h"
31#include "pxa2xx-i2s.h" 31#include "pxa2xx-i2s.h"
32 32
33/*
34 * I2S Controller Register and Bit Definitions
35 */
36#define SACR0 __REG(0x40400000) /* Global Control Register */
37#define SACR1 __REG(0x40400004) /* Serial Audio I 2 S/MSB-Justified Control Register */
38#define SASR0 __REG(0x4040000C) /* Serial Audio I 2 S/MSB-Justified Interface and FIFO Status Register */
39#define SAIMR __REG(0x40400014) /* Serial Audio Interrupt Mask Register */
40#define SAICR __REG(0x40400018) /* Serial Audio Interrupt Clear Register */
41#define SADIV __REG(0x40400060) /* Audio Clock Divider Register. */
42#define SADR __REG(0x40400080) /* Serial Audio Data Register (TX and RX FIFO access Register). */
43
44#define SACR0_RFTH(x) ((x) << 12) /* Rx FIFO Interrupt or DMA Trigger Threshold */
45#define SACR0_TFTH(x) ((x) << 8) /* Tx FIFO Interrupt or DMA Trigger Threshold */
46#define SACR0_STRF (1 << 5) /* FIFO Select for EFWR Special Function */
47#define SACR0_EFWR (1 << 4) /* Enable EFWR Function */
48#define SACR0_RST (1 << 3) /* FIFO, i2s Register Reset */
49#define SACR0_BCKD (1 << 2) /* Bit Clock Direction */
50#define SACR0_ENB (1 << 0) /* Enable I2S Link */
51#define SACR1_ENLBF (1 << 5) /* Enable Loopback */
52#define SACR1_DRPL (1 << 4) /* Disable Replaying Function */
53#define SACR1_DREC (1 << 3) /* Disable Recording Function */
54#define SACR1_AMSL (1 << 0) /* Specify Alternate Mode */
55
56#define SASR0_I2SOFF (1 << 7) /* Controller Status */
57#define SASR0_ROR (1 << 6) /* Rx FIFO Overrun */
58#define SASR0_TUR (1 << 5) /* Tx FIFO Underrun */
59#define SASR0_RFS (1 << 4) /* Rx FIFO Service Request */
60#define SASR0_TFS (1 << 3) /* Tx FIFO Service Request */
61#define SASR0_BSY (1 << 2) /* I2S Busy */
62#define SASR0_RNE (1 << 1) /* Rx FIFO Not Empty */
63#define SASR0_TNF (1 << 0) /* Tx FIFO Not Empty */
64
65#define SAICR_ROR (1 << 6) /* Clear Rx FIFO Overrun Interrupt */
66#define SAICR_TUR (1 << 5) /* Clear Tx FIFO Underrun Interrupt */
67
68#define SAIMR_ROR (1 << 6) /* Enable Rx FIFO Overrun Condition Interrupt */
69#define SAIMR_TUR (1 << 5) /* Enable Tx FIFO Underrun Condition Interrupt */
70#define SAIMR_RFS (1 << 4) /* Enable Rx FIFO Service Interrupt */
71#define SAIMR_TFS (1 << 3) /* Enable Tx FIFO Service Interrupt */
72
33struct pxa_i2s_port { 73struct pxa_i2s_port {
34 u32 sadiv; 74 u32 sadiv;
35 u32 sacr0; 75 u32 sacr0;
@@ -44,7 +84,7 @@ static struct clk *clk_i2s;
44static struct pxa2xx_pcm_dma_params pxa2xx_i2s_pcm_stereo_out = { 84static struct pxa2xx_pcm_dma_params pxa2xx_i2s_pcm_stereo_out = {
45 .name = "I2S PCM Stereo out", 85 .name = "I2S PCM Stereo out",
46 .dev_addr = __PREG(SADR), 86 .dev_addr = __PREG(SADR),
47 .drcmr = &DRCMRTXSADR, 87 .drcmr = &DRCMR(3),
48 .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | 88 .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
49 DCMD_BURST32 | DCMD_WIDTH4, 89 DCMD_BURST32 | DCMD_WIDTH4,
50}; 90};
@@ -52,7 +92,7 @@ static struct pxa2xx_pcm_dma_params pxa2xx_i2s_pcm_stereo_out = {
52static struct pxa2xx_pcm_dma_params pxa2xx_i2s_pcm_stereo_in = { 92static struct pxa2xx_pcm_dma_params pxa2xx_i2s_pcm_stereo_in = {
53 .name = "I2S PCM Stereo in", 93 .name = "I2S PCM Stereo in",
54 .dev_addr = __PREG(SADR), 94 .dev_addr = __PREG(SADR),
55 .drcmr = &DRCMRRXSADR, 95 .drcmr = &DRCMR(2),
56 .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | 96 .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
57 DCMD_BURST32 | DCMD_WIDTH4, 97 DCMD_BURST32 | DCMD_WIDTH4,
58}; 98};