diff options
Diffstat (limited to 'drivers/spi/spi-ar934x.c')
| -rw-r--r-- | drivers/spi/spi-ar934x.c | 41 |
1 files changed, 12 insertions, 29 deletions
diff --git a/drivers/spi/spi-ar934x.c b/drivers/spi/spi-ar934x.c index ec7250c4c810..86c54fff9d6e 100644 --- a/drivers/spi/spi-ar934x.c +++ b/drivers/spi/spi-ar934x.c @@ -14,7 +14,8 @@ #include <linux/iopoll.h> #include <linux/kernel.h> #include <linux/module.h> -#include <linux/of_device.h> +#include <linux/of.h> +#include <linux/platform_device.h> #include <linux/spi/spi.h> #define DRIVER_NAME "spi-ar934x" @@ -61,7 +62,7 @@ static inline int ar934x_spi_clk_div(struct ar934x_spi *sp, unsigned int freq) static int ar934x_spi_setup(struct spi_device *spi) { - struct ar934x_spi *sp = spi_controller_get_devdata(spi->master); + struct ar934x_spi *sp = spi_controller_get_devdata(spi->controller); if ((spi->max_speed_hz == 0) || (spi->max_speed_hz > (sp->clk_freq / 2))) { @@ -74,10 +75,10 @@ static int ar934x_spi_setup(struct spi_device *spi) return 0; } -static int ar934x_spi_transfer_one_message(struct spi_controller *master, +static int ar934x_spi_transfer_one_message(struct spi_controller *ctlr, struct spi_message *m) { - struct ar934x_spi *sp = spi_controller_get_devdata(master); + struct ar934x_spi *sp = spi_controller_get_devdata(ctlr); struct spi_transfer *t = NULL; struct spi_device *spi = m->spi; unsigned long trx_done, trx_cur; @@ -125,7 +126,7 @@ static int ar934x_spi_transfer_one_message(struct spi_controller *master, iowrite32(reg, sp->base + AR934X_SPI_DATAOUT); } - reg = AR934X_SPI_SHIFT_VAL(spi->chip_select, term, + reg = AR934X_SPI_SHIFT_VAL(spi_get_chipselect(spi, 0), term, trx_cur * 8); iowrite32(reg, sp->base + AR934X_SPI_REG_SHIFT_CTRL); stat = readl_poll_timeout( @@ -150,7 +151,7 @@ static int ar934x_spi_transfer_one_message(struct spi_controller *master, msg_done: m->status = stat; - spi_finalize_current_message(master); + spi_finalize_current_message(ctlr); return 0; } @@ -167,27 +168,21 @@ static int ar934x_spi_probe(struct platform_device *pdev) struct ar934x_spi *sp; void __iomem *base; struct clk *clk; - int ret; base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(base)) return PTR_ERR(base); - clk = devm_clk_get(&pdev->dev, NULL); + clk = devm_clk_get_enabled(&pdev->dev, NULL); if (IS_ERR(clk)) { dev_err(&pdev->dev, "failed to get clock\n"); return PTR_ERR(clk); } - ret = clk_prepare_enable(clk); - if (ret) - return ret; - - ctlr = devm_spi_alloc_master(&pdev->dev, sizeof(*sp)); + ctlr = devm_spi_alloc_host(&pdev->dev, sizeof(*sp)); if (!ctlr) { dev_info(&pdev->dev, "failed to allocate spi controller\n"); - ret = -ENOMEM; - goto err_clk_disable; + return -ENOMEM; } /* disable flash mapping and expose spi controller registers */ @@ -211,27 +206,15 @@ static int ar934x_spi_probe(struct platform_device *pdev) sp->clk_freq = clk_get_rate(clk); sp->ctlr = ctlr; - ret = spi_register_controller(ctlr); - if (!ret) - return 0; - -err_clk_disable: - clk_disable_unprepare(clk); - return ret; + return spi_register_controller(ctlr); } -static int ar934x_spi_remove(struct platform_device *pdev) +static void ar934x_spi_remove(struct platform_device *pdev) { struct spi_controller *ctlr; - struct ar934x_spi *sp; ctlr = dev_get_drvdata(&pdev->dev); - sp = spi_controller_get_devdata(ctlr); - spi_unregister_controller(ctlr); - clk_disable_unprepare(sp->clk); - - return 0; } static struct platform_driver ar934x_spi_driver = { |