diff options
Diffstat (limited to 'sound/soc/pxa/pxa2xx-i2s.c')
| -rw-r--r-- | sound/soc/pxa/pxa2xx-i2s.c | 67 |
1 files changed, 58 insertions, 9 deletions
diff --git a/sound/soc/pxa/pxa2xx-i2s.c b/sound/soc/pxa/pxa2xx-i2s.c index c796b188277..e758034db5c 100644 --- a/sound/soc/pxa/pxa2xx-i2s.c +++ b/sound/soc/pxa/pxa2xx-i2s.c @@ -3,7 +3,7 @@ * * Copyright 2005 Wolfson Microelectronics PLC. * Author: Liam Girdwood - * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com + * lrg@slimlogic.co.uk * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -21,6 +21,7 @@ #include <sound/pcm.h> #include <sound/initval.h> #include <sound/soc.h> +#include <sound/pxa2xx-lib.h> #include <mach/hardware.h> #include <mach/pxa-regs.h> @@ -30,6 +31,54 @@ #include "pxa2xx-pcm.h" #include "pxa2xx-i2s.h" +struct pxa2xx_gpio { + u32 sys; + u32 rx; + u32 tx; + u32 clk; + u32 frm; +}; + +/* + * I2S Controller Register and Bit Definitions + */ +#define SACR0 __REG(0x40400000) /* Global Control Register */ +#define SACR1 __REG(0x40400004) /* Serial Audio I 2 S/MSB-Justified Control Register */ +#define SASR0 __REG(0x4040000C) /* Serial Audio I 2 S/MSB-Justified Interface and FIFO Status Register */ +#define SAIMR __REG(0x40400014) /* Serial Audio Interrupt Mask Register */ +#define SAICR __REG(0x40400018) /* Serial Audio Interrupt Clear Register */ +#define SADIV __REG(0x40400060) /* Audio Clock Divider Register. */ +#define SADR __REG(0x40400080) /* Serial Audio Data Register (TX and RX FIFO access Register). */ + +#define SACR0_RFTH(x) ((x) << 12) /* Rx FIFO Interrupt or DMA Trigger Threshold */ +#define SACR0_TFTH(x) ((x) << 8) /* Tx FIFO Interrupt or DMA Trigger Threshold */ +#define SACR0_STRF (1 << 5) /* FIFO Select for EFWR Special Function */ +#define SACR0_EFWR (1 << 4) /* Enable EFWR Function */ +#define SACR0_RST (1 << 3) /* FIFO, i2s Register Reset */ +#define SACR0_BCKD (1 << 2) /* Bit Clock Direction */ +#define SACR0_ENB (1 << 0) /* Enable I2S Link */ +#define SACR1_ENLBF (1 << 5) /* Enable Loopback */ +#define SACR1_DRPL (1 << 4) /* Disable Replaying Function */ +#define SACR1_DREC (1 << 3) /* Disable Recording Function */ +#define SACR1_AMSL (1 << 0) /* Specify Alternate Mode */ + +#define SASR0_I2SOFF (1 << 7) /* Controller Status */ +#define SASR0_ROR (1 << 6) /* Rx FIFO Overrun */ +#define SASR0_TUR (1 << 5) /* Tx FIFO Underrun */ +#define SASR0_RFS (1 << 4) /* Rx FIFO Service Request */ +#define SASR0_TFS (1 << 3) /* Tx FIFO Service Request */ +#define SASR0_BSY (1 << 2) /* I2S Busy */ +#define SASR0_RNE (1 << 1) /* Rx FIFO Not Empty */ +#define SASR0_TNF (1 << 0) /* Tx FIFO Not Empty */ + +#define SAICR_ROR (1 << 6) /* Clear Rx FIFO Overrun Interrupt */ +#define SAICR_TUR (1 << 5) /* Clear Tx FIFO Underrun Interrupt */ + +#define SAIMR_ROR (1 << 6) /* Enable Rx FIFO Overrun Condition Interrupt */ +#define SAIMR_TUR (1 << 5) /* Enable Tx FIFO Underrun Condition Interrupt */ +#define SAIMR_RFS (1 << 4) /* Enable Rx FIFO Service Interrupt */ +#define SAIMR_TFS (1 << 3) /* Enable Tx FIFO Service Interrupt */ + struct pxa_i2s_port { u32 sadiv; u32 sacr0; @@ -44,7 +93,7 @@ static struct clk *clk_i2s; static struct pxa2xx_pcm_dma_params pxa2xx_i2s_pcm_stereo_out = { .name = "I2S PCM Stereo out", .dev_addr = __PREG(SADR), - .drcmr = &DRCMRTXSADR, + .drcmr = &DRCMR(3), .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | DCMD_BURST32 | DCMD_WIDTH4, }; @@ -52,7 +101,7 @@ static struct pxa2xx_pcm_dma_params pxa2xx_i2s_pcm_stereo_out = { static struct pxa2xx_pcm_dma_params pxa2xx_i2s_pcm_stereo_in = { .name = "I2S PCM Stereo in", .dev_addr = __PREG(SADR), - .drcmr = &DRCMRRXSADR, + .drcmr = &DRCMR(2), .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | DCMD_BURST32 | DCMD_WIDTH4, }; @@ -65,11 +114,6 @@ static struct pxa2xx_gpio gpio_bus[] = { .frm = GPIO31_SYNC_I2S_MD, }, { /* I2S SoC Master */ -#ifdef CONFIG_PXA27x - .sys = GPIO113_I2S_SYSCLK_MD, -#else - .sys = GPIO32_SYSCLK_I2S_MD, -#endif .rx = GPIO29_SDATA_IN_I2S_MD, .tx = GPIO30_SDATA_OUT_I2S_MD, .clk = GPIO28_BITCLK_OUT_I2S_MD, @@ -343,6 +387,11 @@ static struct platform_driver pxa2xx_i2s_driver = { static int __init pxa2xx_i2s_init(void) { + if (cpu_is_pxa27x()) + gpio_bus[1].sys = GPIO113_I2S_SYSCLK_MD; + else + gpio_bus[1].sys = GPIO32_SYSCLK_I2S_MD; + clk_i2s = ERR_PTR(-ENOENT); return platform_driver_register(&pxa2xx_i2s_driver); } @@ -356,6 +405,6 @@ module_init(pxa2xx_i2s_init); module_exit(pxa2xx_i2s_exit); /* Module information */ -MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); +MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); MODULE_DESCRIPTION("pxa2xx I2S SoC Interface"); MODULE_LICENSE("GPL"); |