Merge remote-tracking branches 'spi/topic/pxa2xx', 'spi/topic/qup', 'spi/topic/rockchip', 'spi/topic/st-ssc4' and 'spi/topic/xlp' into spi-next
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index b189508..4b931ec 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -580,7 +580,7 @@
config SPI_ST_SSC4
tristate "STMicroelectronics SPI SSC-based driver"
- depends on ARCH_STI
+ depends on ARCH_STI || COMPILE_TEST
help
STMicroelectronics SoCs support for SPI. If you say yes to
this option, support will be included for the SSC driven SPI.
@@ -667,7 +667,7 @@
config SPI_XLP
tristate "Netlogic XLP SPI controller driver"
- depends on CPU_XLP || COMPILE_TEST
+ depends on CPU_XLP || ARCH_VULCAN || COMPILE_TEST
help
Enable support for the SPI controller on the Netlogic XLP SoCs.
Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX, XLP9XX
diff --git a/drivers/spi/spi-pxa2xx-dma.c b/drivers/spi/spi-pxa2xx-dma.c
index 365fc22..a18a03d 100644
--- a/drivers/spi/spi-pxa2xx-dma.c
+++ b/drivers/spi/spi-pxa2xx-dma.c
@@ -33,12 +33,10 @@
dmadev = drv_data->tx_chan->device->dev;
sgt = &drv_data->tx_sgt;
buf = drv_data->tx;
- drv_data->tx_map_len = len;
} else {
dmadev = drv_data->rx_chan->device->dev;
sgt = &drv_data->rx_sgt;
buf = drv_data->rx;
- drv_data->rx_map_len = len;
}
nents = DIV_ROUND_UP(len, SZ_2K);
@@ -55,11 +53,7 @@
for_each_sg(sgt->sgl, sg, sgt->nents, i) {
size_t bytes = min_t(size_t, len, SZ_2K);
- if (buf)
- sg_set_buf(sg, pbuf, bytes);
- else
- sg_set_buf(sg, drv_data->dummy, bytes);
-
+ sg_set_buf(sg, pbuf, bytes);
pbuf += bytes;
len -= bytes;
}
@@ -133,9 +127,6 @@
if (!error) {
pxa2xx_spi_unmap_dma_buffers(drv_data);
- drv_data->tx += drv_data->tx_map_len;
- drv_data->rx += drv_data->rx_map_len;
-
msg->actual_length += drv_data->len;
msg->state = pxa2xx_spi_next_transfer(drv_data);
} else {
@@ -267,19 +258,22 @@
int pxa2xx_spi_dma_prepare(struct driver_data *drv_data, u32 dma_burst)
{
struct dma_async_tx_descriptor *tx_desc, *rx_desc;
+ int err = 0;
tx_desc = pxa2xx_spi_dma_prepare_one(drv_data, DMA_MEM_TO_DEV);
if (!tx_desc) {
dev_err(&drv_data->pdev->dev,
"failed to get DMA TX descriptor\n");
- return -EBUSY;
+ err = -EBUSY;
+ goto err_tx;
}
rx_desc = pxa2xx_spi_dma_prepare_one(drv_data, DMA_DEV_TO_MEM);
if (!rx_desc) {
dev_err(&drv_data->pdev->dev,
"failed to get DMA RX descriptor\n");
- return -EBUSY;
+ err = -EBUSY;
+ goto err_rx;
}
/* We are ready when RX completes */
@@ -289,6 +283,12 @@
dmaengine_submit(rx_desc);
dmaengine_submit(tx_desc);
return 0;
+
+err_rx:
+ dmaengine_terminate_async(drv_data->tx_chan);
+err_tx:
+ pxa2xx_spi_unmap_dma_buffers(drv_data);
+ return err;
}
void pxa2xx_spi_dma_start(struct driver_data *drv_data)
@@ -308,10 +308,6 @@
dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);
- drv_data->dummy = devm_kzalloc(dev, SZ_2K, GFP_KERNEL);
- if (!drv_data->dummy)
- return -ENOMEM;
-
drv_data->tx_chan = dma_request_slave_channel_compat(mask,
pdata->dma_filter, pdata->tx_param, dev, "tx");
if (!drv_data->tx_chan)
diff --git a/drivers/spi/spi-pxa2xx-pci.c b/drivers/spi/spi-pxa2xx-pci.c
index 520ed1d..83706ae 100644
--- a/drivers/spi/spi-pxa2xx-pci.c
+++ b/drivers/spi/spi-pxa2xx-pci.c
@@ -173,8 +173,8 @@
ssp->type = c->type;
snprintf(buf, sizeof(buf), "pxa2xx-spi.%d", ssp->port_id);
- ssp->clk = clk_register_fixed_rate(&dev->dev, buf , NULL,
- CLK_IS_ROOT, c->max_clk_rate);
+ ssp->clk = clk_register_fixed_rate(&dev->dev, buf , NULL, 0,
+ c->max_clk_rate);
if (IS_ERR(ssp->clk))
return PTR_ERR(ssp->clk);
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index dbcc036..fe07c05 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -570,9 +570,8 @@
/* see if the next and current messages point
* to the same chip
*/
- if (next_msg && next_msg->spi != msg->spi)
- next_msg = NULL;
- if (!next_msg || msg->state == ERROR_STATE)
+ if ((next_msg && next_msg->spi != msg->spi) ||
+ msg->state == ERROR_STATE)
cs_deassert(drv_data);
}
@@ -928,6 +927,7 @@
u32 dma_thresh = drv_data->cur_chip->dma_threshold;
u32 dma_burst = drv_data->cur_chip->dma_burst_size;
u32 change_mask = pxa2xx_spi_get_ssrc1_change_mask(drv_data);
+ int err;
/* Get current state information */
message = drv_data->cur_msg;
@@ -1047,7 +1047,12 @@
/* Ensure we have the correct interrupt handler */
drv_data->transfer_handler = pxa2xx_spi_dma_transfer;
- pxa2xx_spi_dma_prepare(drv_data, dma_burst);
+ err = pxa2xx_spi_dma_prepare(drv_data, dma_burst);
+ if (err) {
+ message->status = err;
+ giveback(drv_data);
+ return;
+ }
/* Clear status and start DMA engine */
cr1 = chip->cr1 | dma_thresh | drv_data->dma_cr1;
@@ -1555,6 +1560,7 @@
master->unprepare_transfer_hardware = pxa2xx_spi_unprepare_transfer;
master->fw_translate_cs = pxa2xx_spi_fw_translate_cs;
master->auto_runtime_pm = true;
+ master->flags = SPI_MASTER_MUST_RX | SPI_MASTER_MUST_TX;
drv_data->ssp_type = ssp->type;
diff --git a/drivers/spi/spi-pxa2xx.h b/drivers/spi/spi-pxa2xx.h
index a1ef889..e6b0900 100644
--- a/drivers/spi/spi-pxa2xx.h
+++ b/drivers/spi/spi-pxa2xx.h
@@ -56,7 +56,6 @@
struct sg_table tx_sgt;
int rx_nents;
int tx_nents;
- void *dummy;
atomic_t dma_running;
/* Current message transfer state info */
@@ -69,8 +68,6 @@
void *rx;
void *rx_end;
int dma_mapped;
- size_t rx_map_len;
- size_t tx_map_len;
u8 n_bytes;
int (*write)(struct driver_data *drv_data);
int (*read)(struct driver_data *drv_data);
diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c
index 810a7fa..c338ef1 100644
--- a/drivers/spi/spi-qup.c
+++ b/drivers/spi/spi-qup.c
@@ -937,6 +937,10 @@
config = readl(controller->base + QUP_CONFIG);
config |= QUP_CONFIG_CLOCK_AUTO_GATE;
writel_relaxed(config, controller->base + QUP_CONFIG);
+
+ clk_disable_unprepare(controller->cclk);
+ clk_disable_unprepare(controller->iclk);
+
return 0;
}
@@ -945,6 +949,15 @@
struct spi_master *master = dev_get_drvdata(device);
struct spi_qup *controller = spi_master_get_devdata(master);
u32 config;
+ int ret;
+
+ ret = clk_prepare_enable(controller->iclk);
+ if (ret)
+ return ret;
+
+ ret = clk_prepare_enable(controller->cclk);
+ if (ret)
+ return ret;
/* Disable clocks auto gaiting */
config = readl_relaxed(controller->base + QUP_CONFIG);
@@ -1017,6 +1030,8 @@
pm_runtime_put_noidle(&pdev->dev);
pm_runtime_disable(&pdev->dev);
+ spi_master_put(master);
+
return 0;
}
diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index 6c6c001..cd89682 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -744,10 +744,8 @@
rs->dma_rx.ch = dma_request_chan(rs->dev, "rx");
if (IS_ERR(rs->dma_rx.ch)) {
if (PTR_ERR(rs->dma_rx.ch) == -EPROBE_DEFER) {
- dma_release_channel(rs->dma_tx.ch);
- rs->dma_tx.ch = NULL;
ret = -EPROBE_DEFER;
- goto err_get_fifo_len;
+ goto err_free_dma_tx;
}
dev_warn(rs->dev, "Failed to request RX DMA channel\n");
rs->dma_rx.ch = NULL;
@@ -775,10 +773,11 @@
err_register_master:
pm_runtime_disable(&pdev->dev);
- if (rs->dma_tx.ch)
- dma_release_channel(rs->dma_tx.ch);
if (rs->dma_rx.ch)
dma_release_channel(rs->dma_rx.ch);
+err_free_dma_tx:
+ if (rs->dma_tx.ch)
+ dma_release_channel(rs->dma_tx.ch);
err_get_fifo_len:
clk_disable_unprepare(rs->spiclk);
err_spiclk_enable:
diff --git a/drivers/spi/spi-st-ssc4.c b/drivers/spi/spi-st-ssc4.c
index f17c0ab..d5adf9f 100644
--- a/drivers/spi/spi-st-ssc4.c
+++ b/drivers/spi/spi-st-ssc4.c
@@ -345,12 +345,13 @@
spi_st->clk = devm_clk_get(&pdev->dev, "ssc");
if (IS_ERR(spi_st->clk)) {
dev_err(&pdev->dev, "Unable to request clock\n");
- return PTR_ERR(spi_st->clk);
+ ret = PTR_ERR(spi_st->clk);
+ goto put_master;
}
ret = spi_st_clk_enable(spi_st);
if (ret)
- return ret;
+ goto put_master;
init_completion(&spi_st->done);
@@ -408,7 +409,8 @@
clk_disable:
spi_st_clk_disable(spi_st);
-
+put_master:
+ spi_master_put(master);
return ret;
}