diff options
| author | Nishanth Menon <nm@ti.com> | 2014-04-11 18:21:47 +0200 |
|---|---|---|
| committer | Nishanth Menon <nm@ti.com> | 2014-05-05 21:33:01 +0200 |
| commit | 9e224c8ff19e4c4a9c9272171d5a0169d5cb1bef (patch) | |
| tree | 0fe14e60cea7421c84523de400ce17ba5de11bdc /drivers/bus | |
| parent | bus: omap_l3_noc: populate l3->dev and use it (diff) | |
| download | linux-9e224c8ff19e4c4a9c9272171d5a0169d5cb1bef.tar.xz linux-9e224c8ff19e4c4a9c9272171d5a0169d5cb1bef.zip | |
bus: omap_l3_noc: switch over to relaxed variants of readl/writel
Currently we use __raw_readl and writel in this driver. Considering
there is no specific need for a memory barrier, replacing writel
with endian-neutral writel_relaxed and replacing __raw_readls with
the corresponding endian-neutral readl_relaxed allows us to have a
standard set of register operations for the driver.
While at it, simplify address computation using variables for
register.
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Darren Etheridge <detheridge@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
Diffstat (limited to 'drivers/bus')
| -rw-r--r-- | drivers/bus/omap_l3_noc.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/bus/omap_l3_noc.c b/drivers/bus/omap_l3_noc.c index 37d71b715053..c8facb00bb53 100644 --- a/drivers/bus/omap_l3_noc.c +++ b/drivers/bus/omap_l3_noc.c @@ -55,6 +55,7 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) int err_src = 0; u32 std_err_main, err_reg, clear, masterid; void __iomem *base, *l3_targ_base; + void __iomem *l3_targ_stderr, *l3_targ_slvofslsb, *l3_targ_mstaddr; char *target_name, *master_name = "UN IDENTIFIED"; /* Get the Type of interrupt */ @@ -66,8 +67,8 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) * to determine the source */ base = l3->l3_base[i]; - err_reg = __raw_readl(base + l3_flagmux[i] + - + L3_FLAGMUX_REGERR0 + (inttype << 3)); + err_reg = readl_relaxed(base + l3_flagmux[i] + + L3_FLAGMUX_REGERR0 + (inttype << 3)); /* Get the corresponding error and analyse */ if (err_reg) { @@ -76,10 +77,14 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) /* Read the stderrlog_main_source from clk domain */ l3_targ_base = base + *(l3_targ[i] + err_src); - std_err_main = __raw_readl(l3_targ_base + - L3_TARG_STDERRLOG_MAIN); - masterid = __raw_readl(l3_targ_base + - L3_TARG_STDERRLOG_MSTADDR); + l3_targ_stderr = l3_targ_base + L3_TARG_STDERRLOG_MAIN; + l3_targ_slvofslsb = l3_targ_base + + L3_TARG_STDERRLOG_SLVOFSLSB; + l3_targ_mstaddr = l3_targ_base + + L3_TARG_STDERRLOG_MSTADDR; + + std_err_main = readl_relaxed(l3_targ_stderr); + masterid = readl_relaxed(l3_targ_mstaddr); switch (std_err_main & CUSTOM_ERROR) { case STANDARD_ERROR: @@ -87,12 +92,10 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) l3_targ_inst_name[i][err_src]; WARN(true, "L3 standard error: TARGET:%s at address 0x%x\n", target_name, - __raw_readl(l3_targ_base + - L3_TARG_STDERRLOG_SLVOFSLSB)); + readl_relaxed(l3_targ_slvofslsb)); /* clear the std error log*/ clear = std_err_main | CLEAR_STDERR_LOG; - writel(clear, l3_targ_base + - L3_TARG_STDERRLOG_MAIN); + writel_relaxed(clear, l3_targ_stderr); break; case CUSTOM_ERROR: @@ -107,8 +110,7 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) master_name, target_name); /* clear the std error log*/ clear = std_err_main | CLEAR_STDERR_LOG; - writel(clear, l3_targ_base + - L3_TARG_STDERRLOG_MAIN); + writel_relaxed(clear, l3_targ_stderr); break; default: |