summaryrefslogtreecommitdiffstats
path: root/drivers/soc
diff options
context:
space:
mode:
authorArnd Bergmann <arnd@arndb.de>2016-09-15 00:41:12 +0200
committerArnd Bergmann <arnd@arndb.de>2016-09-15 00:41:12 +0200
commitbdfb3af1b3a22bf2eaf98f0965ce797f0ae8b5ce (patch)
tree8438c99a8093aa0e323901c3947fa3fa1f296316 /drivers/soc
parent8cfc48bcc71edfe322b08f8506fb20b0ebbeb571 (diff)
parenta9ccc123a8e05365f7515dcd023b01100809a6fa (diff)
downloadlinux-bdfb3af1b3a22bf2eaf98f0965ce797f0ae8b5ce.tar.bz2
Merge tag 'tegra-for-4.9-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers
Pull "soc/tegra: Changes for v4.9-rc1" from Thierry Reding: This contains a single patch to fix an issue with setting the deep power down mode of I/O rails. * tag 'tegra-for-4.9-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: soc/tegra: pmc: Fix incorrect DPD request
Diffstat (limited to 'drivers/soc')
-rw-r--r--drivers/soc/tegra/pmc.c28
1 files changed, 8 insertions, 20 deletions
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
index 71c834f3847e..7792ed88d80b 100644
--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -967,8 +967,8 @@ static void tegra_io_rail_unprepare(void)
int tegra_io_rail_power_on(unsigned int id)
{
- unsigned long request, status, value;
- unsigned int bit, mask;
+ unsigned long request, status;
+ unsigned int bit;
int err;
mutex_lock(&pmc->powergates_lock);
@@ -977,15 +977,9 @@ int tegra_io_rail_power_on(unsigned int id)
if (err)
goto error;
- mask = 1 << bit;
+ tegra_pmc_writel(IO_DPD_REQ_CODE_OFF | BIT(bit), request);
- value = tegra_pmc_readl(request);
- value |= mask;
- value &= ~IO_DPD_REQ_CODE_MASK;
- value |= IO_DPD_REQ_CODE_OFF;
- tegra_pmc_writel(value, request);
-
- err = tegra_io_rail_poll(status, mask, 0, 250);
+ err = tegra_io_rail_poll(status, BIT(bit), 0, 250);
if (err) {
pr_info("tegra_io_rail_poll() failed: %d\n", err);
goto error;
@@ -1002,8 +996,8 @@ EXPORT_SYMBOL(tegra_io_rail_power_on);
int tegra_io_rail_power_off(unsigned int id)
{
- unsigned long request, status, value;
- unsigned int bit, mask;
+ unsigned long request, status;
+ unsigned int bit;
int err;
mutex_lock(&pmc->powergates_lock);
@@ -1014,15 +1008,9 @@ int tegra_io_rail_power_off(unsigned int id)
goto error;
}
- mask = 1 << bit;
-
- value = tegra_pmc_readl(request);
- value |= mask;
- value &= ~IO_DPD_REQ_CODE_MASK;
- value |= IO_DPD_REQ_CODE_ON;
- tegra_pmc_writel(value, request);
+ tegra_pmc_writel(IO_DPD_REQ_CODE_ON | BIT(bit), request);
- err = tegra_io_rail_poll(status, mask, mask, 250);
+ err = tegra_io_rail_poll(status, BIT(bit), BIT(bit), 250);
if (err)
goto error;