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@xxxxxx>
Acked-by: Santosh Shilimkar <santosh.shilimkar@xxxxxx>
Acked-by: Felipe Balbi <balbi@xxxxxx>
Acked-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
Tested-by: Darren Etheridge <detheridge@xxxxxx>
---
change in V3: commit message improvement based on Felipe's feedback.
no change since V2 repost.
drivers/bus/omap_l3_noc.c | 26 ++++++++++++++------------
1 file changed, 14 insertions(+), 12 deletions(-)
diff --git a/drivers/bus/omap_l3_noc.c b/drivers/bus/omap_l3_noc.c
index 37d71b7..c8facb0 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:
--
1.7.9.5
--
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