diff options
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/imx-sdma.c | 40 |
1 files changed, 30 insertions, 10 deletions
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index 1ea47db2ff06..a7708b481eab 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -65,8 +65,8 @@ #define SDMA_ONCE_RTB 0x060 #define SDMA_XTRIG_CONF1 0x070 #define SDMA_XTRIG_CONF2 0x074 -#define SDMA_CHNENBL0_V2 0x200 -#define SDMA_CHNENBL0_V1 0x080 +#define SDMA_CHNENBL0_IMX35 0x200 +#define SDMA_CHNENBL0_IMX31 0x080 #define SDMA_CHNPRI_0 0x100 /* @@ -299,13 +299,18 @@ struct sdma_firmware_header { u32 ram_code_size; }; +enum sdma_devtype { + IMX31_SDMA, /* runs on i.mx31 */ + IMX35_SDMA, /* runs on i.mx35 and later */ +}; + struct sdma_engine { struct device *dev; struct device_dma_parameters dma_parms; struct sdma_channel channel[MAX_DMA_CHANNELS]; struct sdma_channel_control *channel_control; void __iomem *regs; - unsigned int version; + enum sdma_devtype devtype; unsigned int num_events; struct sdma_context_data *context; dma_addr_t context_phys; @@ -314,6 +319,19 @@ struct sdma_engine { struct sdma_script_start_addrs *script_addrs; }; +static struct platform_device_id sdma_devtypes[] = { + { + .name = "imx31-sdma", + .driver_data = IMX31_SDMA, + }, { + .name = "imx35-sdma", + .driver_data = IMX35_SDMA, + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(platform, sdma_devtypes); + #define SDMA_H_CONFIG_DSPDMA (1 << 12) /* indicates if the DSPDMA is used */ #define SDMA_H_CONFIG_RTD_PINS (1 << 11) /* indicates if Real-Time Debug pins are enabled */ #define SDMA_H_CONFIG_ACR (1 << 4) /* indicates if AHB freq /core freq = 2 or 1 */ @@ -321,8 +339,8 @@ struct sdma_engine { static inline u32 chnenbl_ofs(struct sdma_engine *sdma, unsigned int event) { - u32 chnenbl0 = (sdma->version == 2 ? SDMA_CHNENBL0_V2 : SDMA_CHNENBL0_V1); - + u32 chnenbl0 = (sdma->devtype == IMX31_SDMA ? SDMA_CHNENBL0_IMX31 : + SDMA_CHNENBL0_IMX35); return chnenbl0 + event * 4; } @@ -1162,15 +1180,16 @@ static int __init sdma_init(struct sdma_engine *sdma) int i, ret; dma_addr_t ccb_phys; - switch (sdma->version) { - case 1: + switch (sdma->devtype) { + case IMX31_SDMA: sdma->num_events = 32; break; - case 2: + case IMX35_SDMA: sdma->num_events = 48; break; default: - dev_err(sdma->dev, "Unknown version %d. aborting\n", sdma->version); + dev_err(sdma->dev, "Unknown sdma type %d. aborting\n", + sdma->devtype); return -ENODEV; } @@ -1284,7 +1303,7 @@ static int __init sdma_probe(struct platform_device *pdev) if (!sdma->script_addrs) goto err_alloc; - sdma->version = pdata->sdma_version; + sdma->devtype = pdev->id_entry->driver_data; dma_cap_set(DMA_SLAVE, sdma->dma_device.cap_mask); dma_cap_set(DMA_CYCLIC, sdma->dma_device.cap_mask); @@ -1366,6 +1385,7 @@ static struct platform_driver sdma_driver = { .driver = { .name = "imx-sdma", }, + .id_table = sdma_devtypes, .remove = __exit_p(sdma_remove), }; |