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| author |   Philipp Zabel <p.zabel@pengutronix.de> | 2016-07-04 19:47:56 +0200 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2016-08-08 19:23:32 +0200 |
| commit | 6b37d3e956a43dba0d340fd112df185b7516fc66 (patch) | |
| tree | f39761d1ec03ee17a987d50cf9ed1de47160793a /drivers/reset/reset-socfpga.c | |
| parent | Linux 4.8-rc1 (diff) | |
| download | linux-dev-6b37d3e956a43dba0d340fd112df185b7516fc66.tar.xz linux-dev-6b37d3e956a43dba0d340fd112df185b7516fc66.zip | |
reset: socfpga: no need to store modrst_offset
Since we can just add it to membase once, there is no need to store
modrst_offset separately, and to repeat the addition with every access.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Diffstat (limited to 'drivers/reset/reset-socfpga.c')
| -rw-r--r-- | drivers/reset/reset-socfpga.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/reset/reset-socfpga.c b/drivers/reset/reset-socfpga.c index 12add9b0fa49..78ebf8424375 100644 --- a/drivers/reset/reset-socfpga.c +++ b/drivers/reset/reset-socfpga.c @@ -28,7 +28,6 @@ struct socfpga_reset_data { spinlock_t lock; void __iomem *membase; - u32 modrst_offset; struct reset_controller_dev rcdev; }; @@ -45,9 +44,8 @@ static int socfpga_reset_assert(struct reset_controller_dev *rcdev, spin_lock_irqsave(&data->lock, flags); - reg = readl(data->membase + data->modrst_offset + (bank * NR_BANKS)); - writel(reg | BIT(offset), data->membase + data->modrst_offset + - (bank * NR_BANKS)); + reg = readl(data->membase + (bank * NR_BANKS)); + writel(reg | BIT(offset), data->membase + (bank * NR_BANKS)); spin_unlock_irqrestore(&data->lock, flags); return 0; @@ -67,9 +65,8 @@ static int socfpga_reset_deassert(struct reset_controller_dev *rcdev, spin_lock_irqsave(&data->lock, flags); - reg = readl(data->membase + data->modrst_offset + (bank * NR_BANKS)); - writel(reg & ~BIT(offset), data->membase + data->modrst_offset + - (bank * NR_BANKS)); + reg = readl(data->membase + (bank * NR_BANKS)); + writel(reg & ~BIT(offset), data->membase + (bank * NR_BANKS)); spin_unlock_irqrestore(&data->lock, flags); @@ -85,7 +82,7 @@ static int socfpga_reset_status(struct reset_controller_dev *rcdev, int offset = id % BITS_PER_LONG; u32 reg; - reg = readl(data->membase + data->modrst_offset + (bank * NR_BANKS)); + reg = readl(data->membase + (bank * NR_BANKS)); return !(reg & BIT(offset)); } @@ -102,6 +99,7 @@ static int socfpga_reset_probe(struct platform_device *pdev) struct resource *res; struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; + u32 modrst_offset; /* * The binding was mainlined without the required property. @@ -122,10 +120,11 @@ static int socfpga_reset_probe(struct platform_device *pdev) if (IS_ERR(data->membase)) return PTR_ERR(data->membase); - if (of_property_read_u32(np, "altr,modrst-offset", &data->modrst_offset)) { + if (of_property_read_u32(np, "altr,modrst-offset", &modrst_offset)) { dev_warn(dev, "missing altr,modrst-offset property, assuming 0x10!\n"); - data->modrst_offset = 0x10; + modrst_offset = 0x10; } + data->membase += modrst_offset; spin_lock_init(&data->lock); |