From 2f3a896b0a416bbda633c98212f6490cfcfff310 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Thu, 22 Sep 2022 21:51:37 -0700 Subject: spi: spi-mpc52xx: switch to using gpiod API This switches the driver to use gpiod API instead of legacy gpio API, which will brings us close to removing of_get_gpio() and other OF-specific old APIs. No functional change intended beyond some differences in error messages. Signed-off-by: Dmitry Torokhov Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/Yy07WbMAG4bPgYNd@google.com Signed-off-by: Mark Brown --- drivers/spi/spi-mpc52xx.c | 32 +++++++++++++------------------- 1 file changed, 13 insertions(+), 19 deletions(-) (limited to 'drivers') diff --git a/drivers/spi/spi-mpc52xx.c b/drivers/spi/spi-mpc52xx.c index 97cdd6545ee1..cb075c1acbee 100644 --- a/drivers/spi/spi-mpc52xx.c +++ b/drivers/spi/spi-mpc52xx.c @@ -11,6 +11,7 @@ */ #include +#include #include #include #include @@ -18,7 +19,6 @@ #include #include #include -#include #include #include #include @@ -90,7 +90,7 @@ struct mpc52xx_spi { const u8 *tx_buf; int cs_change; int gpio_cs_count; - unsigned int *gpio_cs; + struct gpio_desc **gpio_cs; }; /* @@ -102,9 +102,10 @@ static void mpc52xx_spi_chipsel(struct mpc52xx_spi *ms, int value) if (ms->gpio_cs_count > 0) { cs = ms->message->spi->chip_select; - gpio_set_value(ms->gpio_cs[cs], value ? 0 : 1); - } else + gpiod_set_value(ms->gpio_cs[cs], value); + } else { out_8(ms->regs + SPI_PORTDATA, value ? 0 : 0x08); + } } /* @@ -386,10 +387,10 @@ static int mpc52xx_spi_probe(struct platform_device *op) { struct spi_master *master; struct mpc52xx_spi *ms; + struct gpio_desc *gpio_cs; void __iomem *regs; u8 ctrl1; int rc, i = 0; - int gpio_cs; /* MMIO registers */ dev_dbg(&op->dev, "probing mpc5200 SPI device\n"); @@ -451,23 +452,16 @@ static int mpc52xx_spi_probe(struct platform_device *op) } for (i = 0; i < ms->gpio_cs_count; i++) { - gpio_cs = of_get_gpio(op->dev.of_node, i); - if (!gpio_is_valid(gpio_cs)) { - dev_err(&op->dev, - "could not parse the gpio field in oftree\n"); - rc = -ENODEV; - goto err_gpio; - } - - rc = gpio_request(gpio_cs, dev_name(&op->dev)); + gpio_cs = gpiod_get_index(&op->dev, + NULL, i, GPIOD_OUT_LOW); + rc = PTR_ERR_OR_ZERO(gpio_cs); if (rc) { dev_err(&op->dev, - "can't request spi cs gpio #%d on gpio line %d\n", - i, gpio_cs); + "failed to get spi cs gpio #%d: %d\n", + i, rc); goto err_gpio; } - gpio_direction_output(gpio_cs, 1); ms->gpio_cs[i] = gpio_cs; } } @@ -508,7 +502,7 @@ static int mpc52xx_spi_probe(struct platform_device *op) dev_err(&ms->master->dev, "initialization failed\n"); err_gpio: while (i-- > 0) - gpio_free(ms->gpio_cs[i]); + gpiod_put(ms->gpio_cs[i]); kfree(ms->gpio_cs); err_alloc_gpio: @@ -529,7 +523,7 @@ static int mpc52xx_spi_remove(struct platform_device *op) free_irq(ms->irq1, ms); for (i = 0; i < ms->gpio_cs_count; i++) - gpio_free(ms->gpio_cs[i]); + gpiod_put(ms->gpio_cs[i]); kfree(ms->gpio_cs); spi_unregister_master(master); -- cgit v1.2.3