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    Subject[PATCH v2 3/3] media: platform: meson-ao-cec-g12a: add wakeup support
    Date
    add register configuration to activate wakeup feature in bl301

    Tested-by: Kevin Hilman <khilman@baylibre.com>
    Signed-off-by: Guillaume La Roque <glaroque@baylibre.com>
    ---
    drivers/media/platform/meson/ao-cec-g12a.c | 33 ++++++++++++++++++++++
    1 file changed, 33 insertions(+)

    diff --git a/drivers/media/platform/meson/ao-cec-g12a.c b/drivers/media/platform/meson/ao-cec-g12a.c
    index 891533060d49..85850b974126 100644
    --- a/drivers/media/platform/meson/ao-cec-g12a.c
    +++ b/drivers/media/platform/meson/ao-cec-g12a.c
    @@ -25,6 +25,7 @@
    #include <media/cec.h>
    #include <media/cec-notifier.h>
    #include <linux/clk-provider.h>
    +#include <linux/mfd/syscon.h>

    /* CEC Registers */

    @@ -168,6 +169,18 @@

    #define CECB_WAKEUPCTRL 0x31

    +#define CECB_FUNC_CFG_REG 0xA0
    +#define CECB_FUNC_CFG_MASK GENMASK(6, 0)
    +#define CECB_FUNC_CFG_CEC_ON 0x01
    +#define CECB_FUNC_CFG_OTP_ON 0x02
    +#define CECB_FUNC_CFG_AUTO_STANDBY 0x04
    +#define CECB_FUNC_CFG_AUTO_POWER_ON 0x08
    +#define CECB_FUNC_CFG_ALL 0x2f
    +#define CECB_FUNC_CFG_NONE 0x0
    +
    +#define CECB_LOG_ADDR_REG 0xA4
    +#define CECB_LOG_ADDR_MASK GENMASK(22, 16)
    +
    struct meson_ao_cec_g12a_data {
    /* Setup the internal CECB_CTRL2 register */
    bool ctrl2_setup;
    @@ -177,6 +190,7 @@ struct meson_ao_cec_g12a_device {
    struct platform_device *pdev;
    struct regmap *regmap;
    struct regmap *regmap_cec;
    + struct regmap *regmap_ao_sysctrl;
    spinlock_t cec_reg_lock;
    struct cec_notifier *notify;
    struct cec_adapter *adap;
    @@ -518,6 +532,13 @@ meson_ao_cec_g12a_set_log_addr(struct cec_adapter *adap, u8 logical_addr)
    BIT(logical_addr - 8));
    }

    + if (ao_cec->regmap_ao_sysctrl)
    + ret |= regmap_update_bits(ao_cec->regmap_ao_sysctrl,
    + CECB_LOG_ADDR_REG,
    + CECB_LOG_ADDR_MASK,
    + FIELD_PREP(CECB_LOG_ADDR_MASK,
    + logical_addr));
    +
    /* Always set Broadcast/Unregistered 15 address */
    ret |= regmap_update_bits(ao_cec->regmap_cec, CECB_LADD_HIGH,
    BIT(CEC_LOG_ADDR_UNREGISTERED - 8),
    @@ -618,6 +639,13 @@ static int meson_ao_cec_g12a_adap_enable(struct cec_adapter *adap, bool enable)
    regmap_write(ao_cec->regmap_cec, CECB_CTRL2,
    FIELD_PREP(CECB_CTRL2_RISE_DEL_MAX, 2));

    + if (ao_cec->regmap_ao_sysctrl) {
    + regmap_update_bits(ao_cec->regmap_ao_sysctrl,
    + CECB_FUNC_CFG_REG,
    + CECB_FUNC_CFG_MASK,
    + CECB_FUNC_CFG_ALL);
    + }
    +
    meson_ao_cec_g12a_irq_setup(ao_cec, true);

    return 0;
    @@ -685,6 +713,11 @@ static int meson_ao_cec_g12a_probe(struct platform_device *pdev)
    goto out_probe_adapter;
    }

    + ao_cec->regmap_ao_sysctrl = syscon_regmap_lookup_by_phandle
    + (pdev->dev.of_node, "amlogic,ao-sysctrl");
    + if (IS_ERR(ao_cec->regmap_ao_sysctrl))
    + dev_warn(&pdev->dev, "ao-sysctrl syscon regmap lookup failed.\n");
    +
    irq = platform_get_irq(pdev, 0);
    ret = devm_request_threaded_irq(&pdev->dev, irq,
    meson_ao_cec_g12a_irq,
    --
    2.17.1
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