diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0001-drm-vc4-hdmi-Split-the-CEC-disable-enable-functions-.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0001-drm-vc4-hdmi-Split-the-CEC-disable-enable-functions-.patch | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0001-drm-vc4-hdmi-Split-the-CEC-disable-enable-functions-.patch b/target/linux/bcm27xx/patches-5.15/950-0001-drm-vc4-hdmi-Split-the-CEC-disable-enable-functions-.patch new file mode 100644 index 0000000000..6f8ea4e9cc --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0001-drm-vc4-hdmi-Split-the-CEC-disable-enable-functions-.patch @@ -0,0 +1,111 @@ +From d145ff5ff4c35bf00a84c7f916165150d0a75e53 Mon Sep 17 00:00:00 2001 +From: Maxime Ripard <maxime@cerno.tech> +Date: Thu, 19 Aug 2021 15:59:29 +0200 +Subject: [PATCH] drm/vc4: hdmi: Split the CEC disable / enable + functions in two + +In order to ease further additions to the CEC enable and disable, let's +split the function into two functions, one to enable and the other to +disable. + +Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com> +Signed-off-by: Maxime Ripard <maxime@cerno.tech> +Link: https://patchwork.freedesktop.org/patch/msgid/20210819135931.895976-5-maxime@cerno.tech +--- + drivers/gpu/drm/vc4/vc4_hdmi.c | 75 ++++++++++++++++++++-------------- + 1 file changed, 45 insertions(+), 30 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_hdmi.c ++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c +@@ -1739,7 +1739,7 @@ static irqreturn_t vc4_cec_irq_handler(i + return ret; + } + +-static int vc4_hdmi_cec_adap_enable(struct cec_adapter *adap, bool enable) ++static int vc4_hdmi_cec_enable(struct cec_adapter *adap) + { + struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap); + /* clock period in microseconds */ +@@ -1752,38 +1752,53 @@ static int vc4_hdmi_cec_adap_enable(stru + val |= ((4700 / usecs) << VC4_HDMI_CEC_CNT_TO_4700_US_SHIFT) | + ((4500 / usecs) << VC4_HDMI_CEC_CNT_TO_4500_US_SHIFT); + +- if (enable) { +- HDMI_WRITE(HDMI_CEC_CNTRL_5, val | +- VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET); +- HDMI_WRITE(HDMI_CEC_CNTRL_5, val); +- HDMI_WRITE(HDMI_CEC_CNTRL_2, +- ((1500 / usecs) << VC4_HDMI_CEC_CNT_TO_1500_US_SHIFT) | +- ((1300 / usecs) << VC4_HDMI_CEC_CNT_TO_1300_US_SHIFT) | +- ((800 / usecs) << VC4_HDMI_CEC_CNT_TO_800_US_SHIFT) | +- ((600 / usecs) << VC4_HDMI_CEC_CNT_TO_600_US_SHIFT) | +- ((400 / usecs) << VC4_HDMI_CEC_CNT_TO_400_US_SHIFT)); +- HDMI_WRITE(HDMI_CEC_CNTRL_3, +- ((2750 / usecs) << VC4_HDMI_CEC_CNT_TO_2750_US_SHIFT) | +- ((2400 / usecs) << VC4_HDMI_CEC_CNT_TO_2400_US_SHIFT) | +- ((2050 / usecs) << VC4_HDMI_CEC_CNT_TO_2050_US_SHIFT) | +- ((1700 / usecs) << VC4_HDMI_CEC_CNT_TO_1700_US_SHIFT)); +- HDMI_WRITE(HDMI_CEC_CNTRL_4, +- ((4300 / usecs) << VC4_HDMI_CEC_CNT_TO_4300_US_SHIFT) | +- ((3900 / usecs) << VC4_HDMI_CEC_CNT_TO_3900_US_SHIFT) | +- ((3600 / usecs) << VC4_HDMI_CEC_CNT_TO_3600_US_SHIFT) | +- ((3500 / usecs) << VC4_HDMI_CEC_CNT_TO_3500_US_SHIFT)); +- +- if (!vc4_hdmi->variant->external_irq_controller) +- HDMI_WRITE(HDMI_CEC_CPU_MASK_CLEAR, VC4_HDMI_CPU_CEC); +- } else { +- if (!vc4_hdmi->variant->external_irq_controller) +- HDMI_WRITE(HDMI_CEC_CPU_MASK_SET, VC4_HDMI_CPU_CEC); +- HDMI_WRITE(HDMI_CEC_CNTRL_5, val | +- VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET); +- } ++ HDMI_WRITE(HDMI_CEC_CNTRL_5, val | ++ VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET); ++ HDMI_WRITE(HDMI_CEC_CNTRL_5, val); ++ HDMI_WRITE(HDMI_CEC_CNTRL_2, ++ ((1500 / usecs) << VC4_HDMI_CEC_CNT_TO_1500_US_SHIFT) | ++ ((1300 / usecs) << VC4_HDMI_CEC_CNT_TO_1300_US_SHIFT) | ++ ((800 / usecs) << VC4_HDMI_CEC_CNT_TO_800_US_SHIFT) | ++ ((600 / usecs) << VC4_HDMI_CEC_CNT_TO_600_US_SHIFT) | ++ ((400 / usecs) << VC4_HDMI_CEC_CNT_TO_400_US_SHIFT)); ++ HDMI_WRITE(HDMI_CEC_CNTRL_3, ++ ((2750 / usecs) << VC4_HDMI_CEC_CNT_TO_2750_US_SHIFT) | ++ ((2400 / usecs) << VC4_HDMI_CEC_CNT_TO_2400_US_SHIFT) | ++ ((2050 / usecs) << VC4_HDMI_CEC_CNT_TO_2050_US_SHIFT) | ++ ((1700 / usecs) << VC4_HDMI_CEC_CNT_TO_1700_US_SHIFT)); ++ HDMI_WRITE(HDMI_CEC_CNTRL_4, ++ ((4300 / usecs) << VC4_HDMI_CEC_CNT_TO_4300_US_SHIFT) | ++ ((3900 / usecs) << VC4_HDMI_CEC_CNT_TO_3900_US_SHIFT) | ++ ((3600 / usecs) << VC4_HDMI_CEC_CNT_TO_3600_US_SHIFT) | ++ ((3500 / usecs) << VC4_HDMI_CEC_CNT_TO_3500_US_SHIFT)); ++ ++ if (!vc4_hdmi->variant->external_irq_controller) ++ HDMI_WRITE(HDMI_CEC_CPU_MASK_CLEAR, VC4_HDMI_CPU_CEC); ++ + return 0; + } + ++static int vc4_hdmi_cec_disable(struct cec_adapter *adap) ++{ ++ struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap); ++ ++ if (!vc4_hdmi->variant->external_irq_controller) ++ HDMI_WRITE(HDMI_CEC_CPU_MASK_SET, VC4_HDMI_CPU_CEC); ++ ++ HDMI_WRITE(HDMI_CEC_CNTRL_5, HDMI_READ(HDMI_CEC_CNTRL_5) | ++ VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET); ++ ++ return 0; ++} ++ ++static int vc4_hdmi_cec_adap_enable(struct cec_adapter *adap, bool enable) ++{ ++ if (enable) ++ return vc4_hdmi_cec_enable(adap); ++ else ++ return vc4_hdmi_cec_disable(adap); ++} ++ + static int vc4_hdmi_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr) + { + struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap); |