From f200890f224d9ed0af207145a2279f51c6be230b Mon Sep 17 00:00:00 2001 From: Dinh Nguyen Date: Mon, 3 Nov 2014 16:33:05 -0600 Subject: reset: add socfpga_reset_status Populate the reset_status callback for SOCFPGA. Signed-off-by: Alan Tull Signed-off-by: Dinh Nguyen Signed-off-by: Philipp Zabel --- drivers/reset/reset-socfpga.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers/reset') 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) -- cgit v1.2.3