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-rw-r--r--drivers/dma/tegra210-adma.c45
1 files changed, 37 insertions, 8 deletions
diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c
index 9aee015609bd..115ee10f067c 100644
--- a/drivers/dma/tegra210-adma.c
+++ b/drivers/dma/tegra210-adma.c
@@ -45,8 +45,8 @@
#define ADMA_CH_CONFIG 0x28
#define ADMA_CH_CONFIG_SRC_BUF(val) (((val) & 0x7) << 28)
#define ADMA_CH_CONFIG_TRG_BUF(val) (((val) & 0x7) << 24)
-#define ADMA_CH_CONFIG_BURST_SIZE(val) (((val) & 0x7) << 20)
-#define ADMA_CH_CONFIG_BURST_16 5
+#define ADMA_CH_CONFIG_BURST_SIZE_SHIFT 20
+#define ADMA_CH_CONFIG_MAX_BURST_SIZE 16
#define ADMA_CH_CONFIG_WEIGHT_FOR_WRR(val) ((val) & 0xf)
#define ADMA_CH_CONFIG_MAX_BUFS 8
@@ -87,6 +87,7 @@ struct tegra_adma;
* @nr_channels: Number of DMA channels available.
*/
struct tegra_adma_chip_data {
+ unsigned int (*adma_get_burst_config)(unsigned int burst_size);
unsigned int global_reg_offset;
unsigned int global_int_clear;
unsigned int ch_req_tx_shift;
@@ -489,6 +490,22 @@ static enum dma_status tegra_adma_tx_status(struct dma_chan *dc,
return ret;
}
+static unsigned int tegra210_adma_get_burst_config(unsigned int burst_size)
+{
+ if (!burst_size || burst_size > ADMA_CH_CONFIG_MAX_BURST_SIZE)
+ burst_size = ADMA_CH_CONFIG_MAX_BURST_SIZE;
+
+ return fls(burst_size) << ADMA_CH_CONFIG_BURST_SIZE_SHIFT;
+}
+
+static unsigned int tegra186_adma_get_burst_config(unsigned int burst_size)
+{
+ if (!burst_size || burst_size > ADMA_CH_CONFIG_MAX_BURST_SIZE)
+ burst_size = ADMA_CH_CONFIG_MAX_BURST_SIZE;
+
+ return (burst_size - 1) << ADMA_CH_CONFIG_BURST_SIZE_SHIFT;
+}
+
static int tegra_adma_set_xfer_params(struct tegra_adma_chan *tdc,
struct tegra_adma_desc *desc,
dma_addr_t buf_addr,
@@ -504,7 +521,7 @@ static int tegra_adma_set_xfer_params(struct tegra_adma_chan *tdc,
switch (direction) {
case DMA_MEM_TO_DEV:
adma_dir = ADMA_CH_CTRL_DIR_MEM2AHUB;
- burst_size = fls(tdc->sconfig.dst_maxburst);
+ burst_size = tdc->sconfig.dst_maxburst;
ch_regs->config = ADMA_CH_CONFIG_SRC_BUF(desc->num_periods - 1);
ch_regs->ctrl = ADMA_CH_REG_FIELD_VAL(tdc->sreq_index,
cdata->ch_req_mask,
@@ -514,7 +531,7 @@ static int tegra_adma_set_xfer_params(struct tegra_adma_chan *tdc,
case DMA_DEV_TO_MEM:
adma_dir = ADMA_CH_CTRL_DIR_AHUB2MEM;
- burst_size = fls(tdc->sconfig.src_maxburst);
+ burst_size = tdc->sconfig.src_maxburst;
ch_regs->config = ADMA_CH_CONFIG_TRG_BUF(desc->num_periods - 1);
ch_regs->ctrl = ADMA_CH_REG_FIELD_VAL(tdc->sreq_index,
cdata->ch_req_mask,
@@ -527,13 +544,10 @@ static int tegra_adma_set_xfer_params(struct tegra_adma_chan *tdc,
return -EINVAL;
}
- if (!burst_size || burst_size > ADMA_CH_CONFIG_BURST_16)
- burst_size = ADMA_CH_CONFIG_BURST_16;
-
ch_regs->ctrl |= ADMA_CH_CTRL_DIR(adma_dir) |
ADMA_CH_CTRL_MODE_CONTINUOUS |
ADMA_CH_CTRL_FLOWCTRL_EN;
- ch_regs->config |= ADMA_CH_CONFIG_BURST_SIZE(burst_size);
+ ch_regs->config |= cdata->adma_get_burst_config(burst_size);
ch_regs->config |= ADMA_CH_CONFIG_WEIGHT_FOR_WRR(1);
ch_regs->fifo_ctrl = ADMA_CH_FIFO_CTRL_DEFAULT;
ch_regs->tc = desc->period_len & ADMA_CH_TC_COUNT_MASK;
@@ -671,6 +685,7 @@ static int tegra_adma_runtime_resume(struct device *dev)
}
static const struct tegra_adma_chip_data tegra210_chip_data = {
+ .adma_get_burst_config = tegra210_adma_get_burst_config,
.global_reg_offset = 0xc00,
.global_int_clear = 0x20,
.ch_req_tx_shift = 28,
@@ -682,8 +697,22 @@ static const struct tegra_adma_chip_data tegra210_chip_data = {
.nr_channels = 22,
};
+static const struct tegra_adma_chip_data tegra186_chip_data = {
+ .adma_get_burst_config = tegra186_adma_get_burst_config,
+ .global_reg_offset = 0,
+ .global_int_clear = 0x402c,
+ .ch_req_tx_shift = 27,
+ .ch_req_rx_shift = 22,
+ .ch_base_offset = 0x10000,
+ .ch_req_mask = 0x1f,
+ .ch_req_max = 20,
+ .ch_reg_size = 0x100,
+ .nr_channels = 32,
+};
+
static const struct of_device_id tegra_adma_of_match[] = {
{ .compatible = "nvidia,tegra210-adma", .data = &tegra210_chip_data },
+ { .compatible = "nvidia,tegra186-adma", .data = &tegra186_chip_data },
{ },
};
MODULE_DEVICE_TABLE(of, tegra_adma_of_match);