[BAM_P_FIFO_SIZES] = { 0x1820, 0x00, 0x1000, 0x00 },
};
+static const struct reg_offset_data bam_v1_7_reg_info[] = {
+ [BAM_CTRL] = { 0x00000, 0x00, 0x00, 0x00 },
+ [BAM_REVISION] = { 0x01000, 0x00, 0x00, 0x00 },
+ [BAM_NUM_PIPES] = { 0x01008, 0x00, 0x00, 0x00 },
+ [BAM_DESC_CNT_TRSHLD] = { 0x00008, 0x00, 0x00, 0x00 },
+ [BAM_IRQ_SRCS] = { 0x03010, 0x00, 0x00, 0x00 },
+ [BAM_IRQ_SRCS_MSK] = { 0x03014, 0x00, 0x00, 0x00 },
+ [BAM_IRQ_SRCS_UNMASKED] = { 0x03018, 0x00, 0x00, 0x00 },
+ [BAM_IRQ_STTS] = { 0x00014, 0x00, 0x00, 0x00 },
+ [BAM_IRQ_CLR] = { 0x00018, 0x00, 0x00, 0x00 },
+ [BAM_IRQ_EN] = { 0x0001C, 0x00, 0x00, 0x00 },
+ [BAM_CNFG_BITS] = { 0x0007C, 0x00, 0x00, 0x00 },
+ [BAM_IRQ_SRCS_EE] = { 0x03000, 0x00, 0x00, 0x1000 },
+ [BAM_IRQ_SRCS_MSK_EE] = { 0x03004, 0x00, 0x00, 0x1000 },
+ [BAM_P_CTRL] = { 0x13000, 0x1000, 0x00, 0x00 },
+ [BAM_P_RST] = { 0x13004, 0x1000, 0x00, 0x00 },
+ [BAM_P_HALT] = { 0x13008, 0x1000, 0x00, 0x00 },
+ [BAM_P_IRQ_STTS] = { 0x13010, 0x1000, 0x00, 0x00 },
+ [BAM_P_IRQ_CLR] = { 0x13014, 0x1000, 0x00, 0x00 },
+ [BAM_P_IRQ_EN] = { 0x13018, 0x1000, 0x00, 0x00 },
+ [BAM_P_EVNT_DEST_ADDR] = { 0x1382C, 0x00, 0x1000, 0x00 },
+ [BAM_P_EVNT_REG] = { 0x13818, 0x00, 0x1000, 0x00 },
+ [BAM_P_SW_OFSTS] = { 0x13800, 0x00, 0x1000, 0x00 },
+ [BAM_P_DATA_FIFO_ADDR] = { 0x13824, 0x00, 0x1000, 0x00 },
+ [BAM_P_DESC_FIFO_ADDR] = { 0x1381C, 0x00, 0x1000, 0x00 },
+ [BAM_P_EVNT_GEN_TRSHLD] = { 0x13828, 0x00, 0x1000, 0x00 },
+ [BAM_P_FIFO_SIZES] = { 0x13820, 0x00, 0x1000, 0x00 },
+};
+
/* BAM CTRL */
#define BAM_SW_RST BIT(0)
#define BAM_EN BIT(1)
* Sets slave configuration for channel
*
*/
-static void bam_slave_config(struct bam_chan *bchan,
- struct dma_slave_config *cfg)
+static int bam_slave_config(struct dma_chan *chan,
+ struct dma_slave_config *cfg)
{
+ struct bam_chan *bchan = to_bam_chan(chan);
+ unsigned long flag;
+
+ spin_lock_irqsave(&bchan->vc.lock, flag);
memcpy(&bchan->slave, cfg, sizeof(*cfg));
bchan->reconfigure = 1;
+ spin_unlock_irqrestore(&bchan->vc.lock, flag);
+
+ return 0;
}
/**
* No callbacks are done
*
*/
-static void bam_dma_terminate_all(struct bam_chan *bchan)
+static int bam_dma_terminate_all(struct dma_chan *chan)
{
+ struct bam_chan *bchan = to_bam_chan(chan);
unsigned long flag;
LIST_HEAD(head);
spin_unlock_irqrestore(&bchan->vc.lock, flag);
vchan_dma_desc_free_list(&bchan->vc, &head);
+
+ return 0;
}
/**
- * bam_control - DMA device control
+ * bam_pause - Pause DMA channel
* @chan: dma channel
- * @cmd: control cmd
- * @arg: cmd argument
*
- * Perform DMA control command
+ */
+static int bam_pause(struct dma_chan *chan)
+{
+ struct bam_chan *bchan = to_bam_chan(chan);
+ struct bam_device *bdev = bchan->bdev;
+ unsigned long flag;
+
+ spin_lock_irqsave(&bchan->vc.lock, flag);
+ writel_relaxed(1, bam_addr(bdev, bchan->id, BAM_P_HALT));
+ bchan->paused = 1;
+ spin_unlock_irqrestore(&bchan->vc.lock, flag);
+
+ return 0;
+}
+
+/**
+ * bam_resume - Resume DMA channel operations
+ * @chan: dma channel
*
*/
-static int bam_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
- unsigned long arg)
+static int bam_resume(struct dma_chan *chan)
{
struct bam_chan *bchan = to_bam_chan(chan);
struct bam_device *bdev = bchan->bdev;
- int ret = 0;
unsigned long flag;
- switch (cmd) {
- case DMA_PAUSE:
- spin_lock_irqsave(&bchan->vc.lock, flag);
- writel_relaxed(1, bam_addr(bdev, bchan->id, BAM_P_HALT));
- bchan->paused = 1;
- spin_unlock_irqrestore(&bchan->vc.lock, flag);
- break;
-
- case DMA_RESUME:
- spin_lock_irqsave(&bchan->vc.lock, flag);
- writel_relaxed(0, bam_addr(bdev, bchan->id, BAM_P_HALT));
- bchan->paused = 0;
- spin_unlock_irqrestore(&bchan->vc.lock, flag);
- break;
-
- case DMA_TERMINATE_ALL:
- bam_dma_terminate_all(bchan);
- break;
-
- case DMA_SLAVE_CONFIG:
- spin_lock_irqsave(&bchan->vc.lock, flag);
- bam_slave_config(bchan, (struct dma_slave_config *)arg);
- spin_unlock_irqrestore(&bchan->vc.lock, flag);
- break;
-
- default:
- ret = -ENXIO;
- break;
- }
+ spin_lock_irqsave(&bchan->vc.lock, flag);
+ writel_relaxed(0, bam_addr(bdev, bchan->id, BAM_P_HALT));
+ bchan->paused = 0;
+ spin_unlock_irqrestore(&bchan->vc.lock, flag);
- return ret;
+ return 0;
}
/**
static const struct of_device_id bam_of_match[] = {
{ .compatible = "qcom,bam-v1.3.0", .data = &bam_v1_3_reg_info },
{ .compatible = "qcom,bam-v1.4.0", .data = &bam_v1_4_reg_info },
+ { .compatible = "qcom,bam-v1.7.0", .data = &bam_v1_7_reg_info },
{}
};
if (!bdev->channels) {
ret = -ENOMEM;
- goto err_disable_clk;
+ goto err_tasklet_kill;
}
/* allocate and initialize channels */
ret = devm_request_irq(bdev->dev, bdev->irq, bam_dma_irq,
IRQF_TRIGGER_HIGH, "bam_dma", bdev);
if (ret)
- goto err_disable_clk;
+ goto err_bam_channel_exit;
/* set max dma segment size */
bdev->common.dev = bdev->dev;
ret = dma_set_max_seg_size(bdev->common.dev, BAM_MAX_DATA_SIZE);
if (ret) {
dev_err(bdev->dev, "cannot set maximum segment size\n");
- goto err_disable_clk;
+ goto err_bam_channel_exit;
}
platform_set_drvdata(pdev, bdev);
bdev->common.device_alloc_chan_resources = bam_alloc_chan;
bdev->common.device_free_chan_resources = bam_free_chan;
bdev->common.device_prep_slave_sg = bam_prep_slave_sg;
- bdev->common.device_control = bam_control;
+ bdev->common.device_config = bam_slave_config;
+ bdev->common.device_pause = bam_pause;
+ bdev->common.device_resume = bam_resume;
+ bdev->common.device_terminate_all = bam_dma_terminate_all;
bdev->common.device_issue_pending = bam_issue_pending;
bdev->common.device_tx_status = bam_tx_status;
bdev->common.dev = bdev->dev;
ret = dma_async_device_register(&bdev->common);
if (ret) {
dev_err(bdev->dev, "failed to register dma async device\n");
- goto err_disable_clk;
+ goto err_bam_channel_exit;
}
ret = of_dma_controller_register(pdev->dev.of_node, bam_dma_xlate,
err_unregister_dma:
dma_async_device_unregister(&bdev->common);
+err_bam_channel_exit:
+ for (i = 0; i < bdev->num_channels; i++)
+ tasklet_kill(&bdev->channels[i].vc.task);
+err_tasklet_kill:
+ tasklet_kill(&bdev->task);
err_disable_clk:
clk_disable_unprepare(bdev->bamclk);
+
return ret;
}
devm_free_irq(bdev->dev, bdev->irq, bdev);
for (i = 0; i < bdev->num_channels; i++) {
- bam_dma_terminate_all(&bdev->channels[i]);
+ bam_dma_terminate_all(&bdev->channels[i].vc.chan);
tasklet_kill(&bdev->channels[i].vc.task);
dma_free_writecombine(bdev->dev, BAM_DESC_FIFO_SIZE,
projects / karo-tx-linux.git / blobdiff