09.08.2019 2:46, Sowjanya Komatineni пишет:
> This patch implements PMC wakeup sequence for Tegra210 and defines
> common used RTC alarm wake event.
>
> Signed-off-by: Sowjanya Komatineni <skomatineni@xxxxxxxxxx>
> ---
> drivers/soc/tegra/pmc.c | 98 +++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 98 insertions(+)
>
> diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
> index 91c84d0e66ae..3aa71c28a10a 100644
> --- a/drivers/soc/tegra/pmc.c
> +++ b/drivers/soc/tegra/pmc.c
> @@ -58,6 +58,11 @@
> #define PMC_CNTRL_SYSCLK_POLARITY BIT(10) /* sys clk polarity */
> #define PMC_CNTRL_MAIN_RST BIT(4)
>
> +#define PMC_WAKE_MASK 0x0c
> +#define PMC_WAKE_LEVEL 0x10
> +#define PMC_WAKE_STATUS 0x14
> +#define PMC_SW_WAKE_STATUS 0x18
> +
> #define DPD_SAMPLE 0x020
> #define DPD_SAMPLE_ENABLE BIT(0)
> #define DPD_SAMPLE_DISABLE (0 << 0)
> @@ -87,6 +92,11 @@
>
> #define PMC_SCRATCH41 0x140
>
> +#define PMC_WAKE2_MASK 0x160
> +#define PMC_WAKE2_LEVEL 0x164
> +#define PMC_WAKE2_STATUS 0x168
> +#define PMC_SW_WAKE2_STATUS 0x16c
> +
> #define PMC_SENSOR_CTRL 0x1b0
> #define PMC_SENSOR_CTRL_SCRATCH_WRITE BIT(2)
> #define PMC_SENSOR_CTRL_ENABLE_RST BIT(1)
> @@ -1922,6 +1932,43 @@ static const struct irq_domain_ops tegra_pmc_irq_domain_ops = {
> .alloc = tegra_pmc_irq_alloc,
> };
>
> +static int tegra210_pmc_irq_set_wake(struct irq_data *data, unsigned int on)
> +{
> + struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
> + unsigned int offset, bit;
> + u32 value;
> +
> + if (data->hwirq == ULONG_MAX)
> + return 0;
> +
> + offset = data->hwirq / 32;
> + bit = data->hwirq % 32;
> +
> + /* clear wake status */
> + tegra_pmc_writel(pmc, 0, PMC_SW_WAKE_STATUS);
> + tegra_pmc_writel(pmc, 0, PMC_SW_WAKE2_STATUS);
> +
> + tegra_pmc_writel(pmc, 0, PMC_WAKE_STATUS);
> + tegra_pmc_writel(pmc, 0, PMC_WAKE2_STATUS);
> +
> + /* enable PMC wake */
> + if (data->hwirq >= 32)
> + offset = PMC_WAKE2_MASK;
> + else
> + offset = PMC_WAKE_MASK;
> +
> + value = tegra_pmc_readl(pmc, offset);
> +
> + if (on)
> + value |= 1 << bit;
> + else
> + value &= ~(1 << bit);
Looks like a good case for utilizing of the BIT() macro here.
