Merge remote-tracking branches 'spi/topic/ti-qspi', 'spi/topic/tools', 'spi/topic/txx9' and 'spi/topic/xlp' into spi-next
This commit is contained in:
Mark Brown
Коммит
2ce0468433
|
|
@ -41,6 +41,8 @@ struct ti_qspi_regs {
|
|||
};
|
||||
|
||||
struct ti_qspi {
|
||||
struct completion transfer_complete;
|
||||
|
||||
/* list synchronization */
|
||||
struct mutex list_lock;
|
||||
|
||||
|
|
@ -54,6 +56,9 @@ struct ti_qspi {
|
|||
|
||||
struct ti_qspi_regs ctx_reg;
|
||||
|
||||
dma_addr_t mmap_phys_base;
|
||||
struct dma_chan *rx_chan;
|
||||
|
||||
u32 spi_max_frequency;
|
||||
u32 cmd;
|
||||
u32 dc;
|
||||
|
|
@ -379,6 +384,72 @@ static int qspi_transfer_msg(struct ti_qspi *qspi, struct spi_transfer *t,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void ti_qspi_dma_callback(void *param)
|
||||
{
|
||||
struct ti_qspi *qspi = param;
|
||||
|
||||
complete(&qspi->transfer_complete);
|
||||
}
|
||||
|
||||
static int ti_qspi_dma_xfer(struct ti_qspi *qspi, dma_addr_t dma_dst,
|
||||
dma_addr_t dma_src, size_t len)
|
||||
{
|
||||
struct dma_chan *chan = qspi->rx_chan;
|
||||
struct dma_device *dma_dev = chan->device;
|
||||
dma_cookie_t cookie;
|
||||
enum dma_ctrl_flags flags = DMA_CTRL_ACK | DMA_PREP_INTERRUPT;
|
||||
struct dma_async_tx_descriptor *tx;
|
||||
int ret;
|
||||
|
||||
tx = dma_dev->device_prep_dma_memcpy(chan, dma_dst, dma_src,
|
||||
len, flags);
|
||||
if (!tx) {
|
||||
dev_err(qspi->dev, "device_prep_dma_memcpy error\n");
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
tx->callback = ti_qspi_dma_callback;
|
||||
tx->callback_param = qspi;
|
||||
cookie = tx->tx_submit(tx);
|
||||
|
||||
ret = dma_submit_error(cookie);
|
||||
if (ret) {
|
||||
dev_err(qspi->dev, "dma_submit_error %d\n", cookie);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
dma_async_issue_pending(chan);
|
||||
ret = wait_for_completion_timeout(&qspi->transfer_complete,
|
||||
msecs_to_jiffies(len));
|
||||
if (ret <= 0) {
|
||||
dmaengine_terminate_sync(chan);
|
||||
dev_err(qspi->dev, "DMA wait_for_completion_timeout\n");
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ti_qspi_dma_xfer_sg(struct ti_qspi *qspi, struct sg_table rx_sg,
|
||||
loff_t from)
|
||||
{
|
||||
struct scatterlist *sg;
|
||||
dma_addr_t dma_src = qspi->mmap_phys_base + from;
|
||||
dma_addr_t dma_dst;
|
||||
int i, len, ret;
|
||||
|
||||
for_each_sg(rx_sg.sgl, sg, rx_sg.nents, i) {
|
||||
dma_dst = sg_dma_address(sg);
|
||||
len = sg_dma_len(sg);
|
||||
ret = ti_qspi_dma_xfer(qspi, dma_dst, dma_src, len);
|
||||
if (ret)
|
||||
return ret;
|
||||
dma_src += len;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void ti_qspi_enable_memory_map(struct spi_device *spi)
|
||||
{
|
||||
struct ti_qspi *qspi = spi_master_get_devdata(spi->master);
|
||||
|
|
@ -437,9 +508,23 @@ static int ti_qspi_spi_flash_read(struct spi_device *spi,
|
|||
if (!qspi->mmap_enabled)
|
||||
ti_qspi_enable_memory_map(spi);
|
||||
ti_qspi_setup_mmap_read(spi, msg);
|
||||
|
||||
if (qspi->rx_chan) {
|
||||
if (msg->cur_msg_mapped) {
|
||||
ret = ti_qspi_dma_xfer_sg(qspi, msg->rx_sg, msg->from);
|
||||
if (ret)
|
||||
goto err_unlock;
|
||||
} else {
|
||||
dev_err(qspi->dev, "Invalid address for DMA\n");
|
||||
ret = -EIO;
|
||||
goto err_unlock;
|
||||
}
|
||||
} else {
|
||||
memcpy_fromio(msg->buf, qspi->mmap_base + msg->from, msg->len);
|
||||
}
|
||||
msg->retlen = msg->len;
|
||||
|
||||
err_unlock:
|
||||
mutex_unlock(&qspi->list_lock);
|
||||
|
||||
return ret;
|
||||
|
|
@ -536,6 +621,7 @@ static int ti_qspi_probe(struct platform_device *pdev)
|
|||
struct device_node *np = pdev->dev.of_node;
|
||||
u32 max_freq;
|
||||
int ret = 0, num_cs, irq;
|
||||
dma_cap_mask_t mask;
|
||||
|
||||
master = spi_alloc_master(&pdev->dev, sizeof(*qspi));
|
||||
if (!master)
|
||||
|
|
@ -550,6 +636,7 @@ static int ti_qspi_probe(struct platform_device *pdev)
|
|||
master->dev.of_node = pdev->dev.of_node;
|
||||
master->bits_per_word_mask = SPI_BPW_MASK(32) | SPI_BPW_MASK(16) |
|
||||
SPI_BPW_MASK(8);
|
||||
master->spi_flash_read = ti_qspi_spi_flash_read;
|
||||
|
||||
if (!of_property_read_u32(np, "num-cs", &num_cs))
|
||||
master->num_chipselect = num_cs;
|
||||
|
|
@ -592,17 +679,6 @@ static int ti_qspi_probe(struct platform_device *pdev)
|
|||
goto free_master;
|
||||
}
|
||||
|
||||
if (res_mmap) {
|
||||
qspi->mmap_base = devm_ioremap_resource(&pdev->dev,
|
||||
res_mmap);
|
||||
master->spi_flash_read = ti_qspi_spi_flash_read;
|
||||
if (IS_ERR(qspi->mmap_base)) {
|
||||
dev_err(&pdev->dev,
|
||||
"falling back to PIO mode\n");
|
||||
master->spi_flash_read = NULL;
|
||||
}
|
||||
}
|
||||
qspi->mmap_enabled = false;
|
||||
|
||||
if (of_property_read_bool(np, "syscon-chipselects")) {
|
||||
qspi->ctrl_base =
|
||||
|
|
@ -633,10 +709,36 @@ static int ti_qspi_probe(struct platform_device *pdev)
|
|||
if (!of_property_read_u32(np, "spi-max-frequency", &max_freq))
|
||||
qspi->spi_max_frequency = max_freq;
|
||||
|
||||
ret = devm_spi_register_master(&pdev->dev, master);
|
||||
if (ret)
|
||||
goto free_master;
|
||||
dma_cap_zero(mask);
|
||||
dma_cap_set(DMA_MEMCPY, mask);
|
||||
|
||||
qspi->rx_chan = dma_request_chan_by_mask(&mask);
|
||||
if (!qspi->rx_chan) {
|
||||
dev_err(qspi->dev,
|
||||
"No Rx DMA available, trying mmap mode\n");
|
||||
ret = 0;
|
||||
goto no_dma;
|
||||
}
|
||||
master->dma_rx = qspi->rx_chan;
|
||||
init_completion(&qspi->transfer_complete);
|
||||
if (res_mmap)
|
||||
qspi->mmap_phys_base = (dma_addr_t)res_mmap->start;
|
||||
|
||||
no_dma:
|
||||
if (!qspi->rx_chan && res_mmap) {
|
||||
qspi->mmap_base = devm_ioremap_resource(&pdev->dev, res_mmap);
|
||||
if (IS_ERR(qspi->mmap_base)) {
|
||||
dev_info(&pdev->dev,
|
||||
"mmap failed with error %ld using PIO mode\n",
|
||||
PTR_ERR(qspi->mmap_base));
|
||||
qspi->mmap_base = NULL;
|
||||
master->spi_flash_read = NULL;
|
||||
}
|
||||
}
|
||||
qspi->mmap_enabled = false;
|
||||
|
||||
ret = devm_spi_register_master(&pdev->dev, master);
|
||||
if (!ret)
|
||||
return 0;
|
||||
|
||||
free_master:
|
||||
|
|
@ -656,6 +758,9 @@ static int ti_qspi_remove(struct platform_device *pdev)
|
|||
pm_runtime_put_sync(&pdev->dev);
|
||||
pm_runtime_disable(&pdev->dev);
|
||||
|
||||
if (qspi->rx_chan)
|
||||
dma_release_channel(qspi->rx_chan);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -346,7 +346,7 @@ static int txx9spi_probe(struct platform_device *dev)
|
|||
c->clk = NULL;
|
||||
goto exit;
|
||||
}
|
||||
ret = clk_enable(c->clk);
|
||||
ret = clk_prepare_enable(c->clk);
|
||||
if (ret) {
|
||||
c->clk = NULL;
|
||||
goto exit;
|
||||
|
|
@ -395,7 +395,7 @@ static int txx9spi_probe(struct platform_device *dev)
|
|||
exit_busy:
|
||||
ret = -EBUSY;
|
||||
exit:
|
||||
clk_disable(c->clk);
|
||||
clk_disable_unprepare(c->clk);
|
||||
spi_master_put(master);
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -406,7 +406,7 @@ static int txx9spi_remove(struct platform_device *dev)
|
|||
struct txx9spi *c = spi_master_get_devdata(master);
|
||||
|
||||
flush_work(&c->work);
|
||||
clk_disable(c->clk);
|
||||
clk_disable_unprepare(c->clk);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -11,6 +11,7 @@
|
|||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
#include <linux/acpi.h>
|
||||
#include <linux/clk.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
|
|
@ -405,8 +406,9 @@ static int xlp_spi_probe(struct platform_device *pdev)
|
|||
clk = devm_clk_get(&pdev->dev, NULL);
|
||||
if (IS_ERR(clk)) {
|
||||
dev_err(&pdev->dev, "could not get spi clock\n");
|
||||
return -ENODEV;
|
||||
return PTR_ERR(clk);
|
||||
}
|
||||
|
||||
xspi->spi_clk = clk_get_rate(clk);
|
||||
|
||||
master = spi_alloc_master(&pdev->dev, 0);
|
||||
|
|
@ -437,6 +439,14 @@ static int xlp_spi_probe(struct platform_device *pdev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_ACPI
|
||||
static const struct acpi_device_id xlp_spi_acpi_match[] = {
|
||||
{ "BRCM900D", 0 },
|
||||
{ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(acpi, xlp_spi_acpi_match);
|
||||
#endif
|
||||
|
||||
static const struct of_device_id xlp_spi_dt_id[] = {
|
||||
{ .compatible = "netlogic,xlp832-spi" },
|
||||
{ },
|
||||
|
|
@ -447,6 +457,7 @@ static struct platform_driver xlp_spi_driver = {
|
|||
.driver = {
|
||||
.name = "xlp-spi",
|
||||
.of_match_table = xlp_spi_dt_id,
|
||||
.acpi_match_table = ACPI_PTR(xlp_spi_acpi_match),
|
||||
},
|
||||
};
|
||||
module_platform_driver(xlp_spi_driver);
|
||||
|
|
|
|||
|
|
@ -1,3 +1,5 @@
|
|||
CC = $(CROSS_COMPILE)gcc
|
||||
|
||||
all: spidev_test spidev_fdx
|
||||
|
||||
clean:
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче