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soc/tegra: Changes for v4.9-rc1

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This contains a single patch to fix an issue with setting the deep power
 down mode of I/O rails.
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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
This commit is contained in:
Arnd Bergmann 2016-09-15 00:41:12 +02:00
commit bdfb3af1b3
1 changed files with 8 additions and 20 deletions
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28
drivers/soc/tegra/pmc.c
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@ -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;
tegra_pmc_writel(IO_DPD_REQ_CODE_ON | BIT(bit), request);
value = tegra_pmc_readl(request);
value |= mask;
value &= ~IO_DPD_REQ_CODE_MASK;
value |= IO_DPD_REQ_CODE_ON;
tegra_pmc_writel(value, 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;