diff options
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-imx.c | 30 | ||||
| -rw-r--r-- | drivers/spi/spi-orion.c | 30 |
2 files changed, 42 insertions, 18 deletions
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index 69c9a6601f45..47877d687614 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -86,7 +86,8 @@ struct spi_imx_data { struct completion xfer_done; void __iomem *base; int irq; - struct clk *clk; + struct clk *clk_per; + struct clk *clk_ipg; unsigned long spi_clk; unsigned int count; @@ -853,15 +854,22 @@ static int __devinit spi_imx_probe(struct platform_device *pdev) goto out_free_irq; } - spi_imx->clk = clk_get(&pdev->dev, NULL); - if (IS_ERR(spi_imx->clk)) { - dev_err(&pdev->dev, "unable to get clock\n"); - ret = PTR_ERR(spi_imx->clk); + spi_imx->clk_ipg = devm_clk_get(&pdev->dev, "ipg"); + if (IS_ERR(spi_imx->clk_ipg)) { + ret = PTR_ERR(spi_imx->clk_ipg); goto out_free_irq; } - clk_enable(spi_imx->clk); - spi_imx->spi_clk = clk_get_rate(spi_imx->clk); + spi_imx->clk_per = devm_clk_get(&pdev->dev, "per"); + if (IS_ERR(spi_imx->clk_per)) { + ret = PTR_ERR(spi_imx->clk_per); + goto out_free_irq; + } + + clk_prepare_enable(spi_imx->clk_per); + clk_prepare_enable(spi_imx->clk_ipg); + + spi_imx->spi_clk = clk_get_rate(spi_imx->clk_per); spi_imx->devtype_data->reset(spi_imx); @@ -879,8 +887,8 @@ static int __devinit spi_imx_probe(struct platform_device *pdev) return ret; out_clk_put: - clk_disable(spi_imx->clk); - clk_put(spi_imx->clk); + clk_disable_unprepare(spi_imx->clk_per); + clk_disable_unprepare(spi_imx->clk_ipg); out_free_irq: free_irq(spi_imx->irq, spi_imx); out_iounmap: @@ -908,8 +916,8 @@ static int __devexit spi_imx_remove(struct platform_device *pdev) spi_bitbang_stop(&spi_imx->bitbang); writel(0, spi_imx->base + MXC_CSPICTRL); - clk_disable(spi_imx->clk); - clk_put(spi_imx->clk); + clk_disable_unprepare(spi_imx->clk_per); + clk_disable_unprepare(spi_imx->clk_ipg); free_irq(spi_imx->irq, spi_imx); iounmap(spi_imx->base); diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c index e496f799b7a9..dfd04e91fa6d 100644 --- a/drivers/spi/spi-orion.c +++ b/drivers/spi/spi-orion.c @@ -16,8 +16,8 @@ #include <linux/err.h> #include <linux/io.h> #include <linux/spi/spi.h> -#include <linux/spi/orion_spi.h> #include <linux/module.h> +#include <linux/clk.h> #include <asm/unaligned.h> #define DRIVER_NAME "orion_spi" @@ -46,6 +46,7 @@ struct orion_spi { unsigned int max_speed; unsigned int min_speed; struct orion_spi_info *spi_info; + struct clk *clk; }; static struct workqueue_struct *orion_spi_wq; @@ -104,7 +105,7 @@ static int orion_spi_baudrate_set(struct spi_device *spi, unsigned int speed) orion_spi = spi_master_get_devdata(spi->master); - tclk_hz = orion_spi->spi_info->tclk; + tclk_hz = clk_get_rate(orion_spi->clk); /* * the supported rates are: 4,6,8...30 @@ -450,6 +451,7 @@ static int __init orion_spi_probe(struct platform_device *pdev) struct orion_spi *spi; struct resource *r; struct orion_spi_info *spi_info; + unsigned long tclk_hz; int status = 0; spi_info = pdev->dev.platform_data; @@ -476,19 +478,28 @@ static int __init orion_spi_probe(struct platform_device *pdev) spi->master = master; spi->spi_info = spi_info; - spi->max_speed = DIV_ROUND_UP(spi_info->tclk, 4); - spi->min_speed = DIV_ROUND_UP(spi_info->tclk, 30); + spi->clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(spi->clk)) { + status = PTR_ERR(spi->clk); + goto out; + } + + clk_prepare(spi->clk); + clk_enable(spi->clk); + tclk_hz = clk_get_rate(spi->clk); + spi->max_speed = DIV_ROUND_UP(tclk_hz, 4); + spi->min_speed = DIV_ROUND_UP(tclk_hz, 30); r = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (r == NULL) { status = -ENODEV; - goto out; + goto out_rel_clk; } if (!request_mem_region(r->start, resource_size(r), dev_name(&pdev->dev))) { status = -EBUSY; - goto out; + goto out_rel_clk; } spi->base = ioremap(r->start, SZ_1K); @@ -508,7 +519,9 @@ static int __init orion_spi_probe(struct platform_device *pdev) out_rel_mem: release_mem_region(r->start, resource_size(r)); - +out_rel_clk: + clk_disable_unprepare(spi->clk); + clk_put(spi->clk); out: spi_master_put(master); return status; @@ -526,6 +539,9 @@ static int __exit orion_spi_remove(struct platform_device *pdev) cancel_work_sync(&spi->work); + clk_disable_unprepare(spi->clk); + clk_put(spi->clk); + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); release_mem_region(r->start, resource_size(r)); |