#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/dmaengine.h>
-#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/irq.h>
bool rx_dma_busy;
};
-struct img_spfi_device_data {
- bool gpio_requested;
-};
-
static inline u32 spfi_readl(struct img_spfi *spfi, u32 reg)
{
return readl(spfi->regs + reg);
return 0;
}
-static int img_spfi_setup(struct spi_device *spi)
-{
- int ret = -EINVAL;
- struct img_spfi_device_data *spfi_data = spi_get_ctldata(spi);
-
- if (!spfi_data) {
- spfi_data = kzalloc(sizeof(*spfi_data), GFP_KERNEL);
- if (!spfi_data)
- return -ENOMEM;
- spfi_data->gpio_requested = false;
- spi_set_ctldata(spi, spfi_data);
- }
- if (!spfi_data->gpio_requested) {
- ret = gpio_request_one(spi->cs_gpio,
- (spi->mode & SPI_CS_HIGH) ?
- GPIOF_OUT_INIT_LOW : GPIOF_OUT_INIT_HIGH,
- dev_name(&spi->dev));
- if (ret)
- dev_err(&spi->dev, "can't request chipselect gpio %d\n",
- spi->cs_gpio);
- else
- spfi_data->gpio_requested = true;
- } else {
- if (gpio_is_valid(spi->cs_gpio)) {
- int mode = ((spi->mode & SPI_CS_HIGH) ?
- GPIOF_OUT_INIT_LOW : GPIOF_OUT_INIT_HIGH);
-
- ret = gpio_direction_output(spi->cs_gpio, mode);
- if (ret)
- dev_err(&spi->dev, "chipselect gpio %d setup failed (%d)\n",
- spi->cs_gpio, ret);
- }
- }
- return ret;
-}
-
-static void img_spfi_cleanup(struct spi_device *spi)
-{
- struct img_spfi_device_data *spfi_data = spi_get_ctldata(spi);
-
- if (spfi_data) {
- if (spfi_data->gpio_requested)
- gpio_free(spi->cs_gpio);
- kfree(spfi_data);
- spi_set_ctldata(spi, NULL);
- }
-}
-
static void img_spfi_config(struct spi_master *master, struct spi_device *spi,
struct spi_transfer *xfer)
{
master->max_speed_hz = max_speed_hz;
}
- master->setup = img_spfi_setup;
- master->cleanup = img_spfi_cleanup;
master->transfer_one = img_spfi_transfer_one;
master->prepare_message = img_spfi_prepare;
master->unprepare_message = img_spfi_unprepare;
master->handle_err = img_spfi_handle_err;
+ master->use_gpio_descriptors = true;
spfi->tx_ch = dma_request_chan(spfi->dev, "tx");
if (IS_ERR(spfi->tx_ch)) {