spi/tegra-slink: assume CONFIG_OF, remove platform data
Tegra only supports, and always enables, device tree. Remove all ifdefs
and runtime checks for DT support from the driver. Platform data is
therefore no longer required. Rework the driver to parse the device tree
directly into struct tegra_slink_data.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c
index d353154..9c02470 100644
--- a/drivers/spi/spi-tegra20-slink.c
+++ b/drivers/spi/spi-tegra20-slink.c
@@ -34,7 +34,6 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/spi/spi.h>
-#include <linux/spi/spi-tegra.h>
#include <linux/clk/tegra.h>
#define SLINK_COMMAND 0x000
@@ -1032,29 +1031,18 @@
return IRQ_WAKE_THREAD;
}
-static struct tegra_spi_platform_data *tegra_slink_parse_dt(
- struct platform_device *pdev)
+static void tegra_slink_parse_dt(struct tegra_slink_data *tspi)
{
- struct tegra_spi_platform_data *pdata;
- const unsigned int *prop;
- struct device_node *np = pdev->dev.of_node;
+ struct device_node *np = tspi->dev->of_node;
u32 of_dma[2];
- pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
- if (!pdata) {
- dev_err(&pdev->dev, "Memory alloc for pdata failed\n");
- return NULL;
- }
-
if (of_property_read_u32_array(np, "nvidia,dma-request-selector",
of_dma, 2) >= 0)
- pdata->dma_req_sel = of_dma[1];
+ tspi->dma_req_sel = of_dma[1];
- prop = of_get_property(np, "spi-max-frequency", NULL);
- if (prop)
- pdata->spi_max_frequency = be32_to_cpup(prop);
-
- return pdata;
+ if (of_property_read_u32(np, "spi-max-frequency",
+ &tspi->spi_max_frequency))
+ tspi->spi_max_frequency = 25000000; /* 25MHz */
}
const struct tegra_slink_chip_data tegra30_spi_cdata = {
@@ -1077,27 +1065,16 @@
struct spi_master *master;
struct tegra_slink_data *tspi;
struct resource *r;
- struct tegra_spi_platform_data *pdata = pdev->dev.platform_data;
int ret, spi_irq;
const struct tegra_slink_chip_data *cdata = NULL;
const struct of_device_id *match;
- match = of_match_device(of_match_ptr(tegra_slink_of_match), &pdev->dev);
+ match = of_match_device(tegra_slink_of_match, &pdev->dev);
if (!match) {
dev_err(&pdev->dev, "Error: No device match found\n");
return -ENODEV;
}
cdata = match->data;
- if (!pdata && pdev->dev.of_node)
- pdata = tegra_slink_parse_dt(pdev);
-
- if (!pdata) {
- dev_err(&pdev->dev, "No platform data, exiting\n");
- return -ENODEV;
- }
-
- if (!pdata->spi_max_frequency)
- pdata->spi_max_frequency = 25000000; /* 25MHz */
master = spi_alloc_master(&pdev->dev, sizeof(*tspi));
if (!master) {
@@ -1115,11 +1092,12 @@
dev_set_drvdata(&pdev->dev, master);
tspi = spi_master_get_devdata(master);
tspi->master = master;
- tspi->dma_req_sel = pdata->dma_req_sel;
tspi->dev = &pdev->dev;
tspi->chip_data = cdata;
spin_lock_init(&tspi->lock);
+ tegra_slink_parse_dt(tspi);
+
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!r) {
dev_err(&pdev->dev, "No IO memory resource\n");
@@ -1153,9 +1131,8 @@
tspi->max_buf_size = SLINK_FIFO_DEPTH << 2;
tspi->dma_buf_size = DEFAULT_SPI_DMA_BUF_LEN;
- tspi->spi_max_frequency = pdata->spi_max_frequency;
- if (pdata->dma_req_sel) {
+ if (tspi->dma_req_sel) {
ret = tegra_slink_init_dma_param(tspi, true);
if (ret < 0) {
dev_err(&pdev->dev, "RxDma Init failed, err %d\n", ret);
@@ -1298,7 +1275,7 @@
.name = "spi-tegra-slink",
.owner = THIS_MODULE,
.pm = &slink_pm_ops,
- .of_match_table = of_match_ptr(tegra_slink_of_match),
+ .of_match_table = tegra_slink_of_match,
},
.probe = tegra_slink_probe,
.remove = tegra_slink_remove,