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authorDinh Nguyen <dinguyen@opensource.altera.com>2014-11-04 01:33:05 +0300
committerPhilipp Zabel <p.zabel@pengutronix.de>2014-11-04 14:40:16 +0300
commitf200890f224d9ed0af207145a2279f51c6be230b (patch)
treed3d3ac0712eb44648e295ad4303c895666e35f9f /drivers/reset/reset-socfpga.c
parent1a5f77d3959b4561bf19471785e44b63740cff90 (diff)
downloadlinux-f200890f224d9ed0af207145a2279f51c6be230b.tar.xz
reset: add socfpga_reset_status
Populate the reset_status callback for SOCFPGA. Signed-off-by: Alan Tull <atull@opensource.altera.com> Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Diffstat (limited to 'drivers/reset/reset-socfpga.c')
-rw-r--r--drivers/reset/reset-socfpga.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/reset/reset-socfpga.c b/drivers/reset/reset-socfpga.c
index 79c32ca84ef1..40582089474a 100644
--- a/drivers/reset/reset-socfpga.c
+++ b/drivers/reset/reset-socfpga.c
@@ -76,9 +76,24 @@ static int socfpga_reset_deassert(struct reset_controller_dev *rcdev,
return 0;
}
+static int socfpga_reset_status(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ struct socfpga_reset_data *data = container_of(rcdev,
+ struct socfpga_reset_data, rcdev);
+ int bank = id / BITS_PER_LONG;
+ int offset = id % BITS_PER_LONG;
+ u32 reg;
+
+ reg = readl(data->membase + OFFSET_MODRST + (bank * NR_BANKS));
+
+ return !(reg & BIT(offset));
+}
+
static struct reset_control_ops socfpga_reset_ops = {
.assert = socfpga_reset_assert,
.deassert = socfpga_reset_deassert,
+ .status = socfpga_reset_status,
};
static int socfpga_reset_probe(struct platform_device *pdev)