[added to the 3.18 stable tree] thermal: rcar: fix ENR register value
From: Sasha Levin <hidden>
Date: 2015-08-27 15:49:11
Subsystem:
the rest, thermal · Maintainers:
Linus Torvalds, Rafael J. Wysocki, Daniel Lezcano
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> This patch has been added to the 3.18 stable tree. If you have any objections, please let us know. =============== [ Upstream commit 11313746547015ace605c4c347a40350753051e4 ] On R-Mobile APE6, since it has 3 thermal zones, ENR register has enable bits in bit 19-16, bit 11-8 and bit 3-0. However, on R-Car gen2, since it has 1 thermal zone, ENR register has enable bits in bit 3-0. (In other words, the write value should always be 0 for bit 31-4 of ENR register.) So, this patch fixes the ENR register value using I/O resource sets. Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Sasha Levin <redacted> --- drivers/thermal/rcar_thermal.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index 8803e69..2f3b4ff 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c@@ -372,6 +372,7 @@ static int rcar_thermal_probe(struct platform_device *pdev) int i; int ret = -ENODEV; int idle = IDLE_INTERVAL; + u32 enr_bits = 0; common = devm_kzalloc(dev, sizeof(*common), GFP_KERNEL); if (!common)
@@ -408,9 +409,6 @@ static int rcar_thermal_probe(struct platform_device *pdev) if (IS_ERR(common->base)) return PTR_ERR(common->base); - /* enable temperature comparation */ - rcar_thermal_common_write(common, ENR, 0x00030303); - idle = 0; /* polling delay is not needed */ }
@@ -452,8 +450,15 @@ static int rcar_thermal_probe(struct platform_device *pdev) rcar_thermal_irq_enable(priv); list_move_tail(&priv->list, &common->head); + + /* update ENR bits */ + enr_bits |= 3 << (i * 8); } + /* enable temperature comparation */ + if (irq) + rcar_thermal_common_write(common, ENR, enr_bits); + platform_set_drvdata(pdev, common); dev_info(dev, "%d sensor probed\n", i);
--
2.1.4