diff options
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/ipq40xx/patches-5.4/090-pinctrl-msm-open-drain.patch | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/target/linux/ipq40xx/patches-5.4/090-pinctrl-msm-open-drain.patch b/target/linux/ipq40xx/patches-5.4/090-pinctrl-msm-open-drain.patch new file mode 100644 index 0000000000..5cd4ccc30f --- /dev/null +++ b/target/linux/ipq40xx/patches-5.4/090-pinctrl-msm-open-drain.patch @@ -0,0 +1,81 @@ +From 5b08c1d567ee8e6af94696b3e549997cbdb2bb80 Mon Sep 17 00:00:00 2001 +From: Jaiganesh Narayanan <njaigane@codeaurora.org> +Date: Thu, 1 Sep 2016 10:40:38 +0530 +Subject: [PATCH] pinctrl: qcom: ipq4019: add open drain support + +Signed-off-by: Jaiganesh Narayanan <njaigane@codeaurora.org> +[ Brian: adapted from from the Chromium OS kernel used on IPQ4019-based + WiFi APs. ] +Signed-off-by: Brian Norris <computersforpeace@gmail.com> +--- +https://lore.kernel.org/linux-gpio/20200703080646.23233-1-computersforpeace@gmail.com/ + + drivers/pinctrl/qcom/pinctrl-ipq4019.c | 1 + + drivers/pinctrl/qcom/pinctrl-msm.c | 13 +++++++++++++ + drivers/pinctrl/qcom/pinctrl-msm.h | 2 ++ + 3 files changed, 16 insertions(+) + +--- a/drivers/pinctrl/qcom/pinctrl-ipq4019.c ++++ b/drivers/pinctrl/qcom/pinctrl-ipq4019.c +@@ -254,6 +254,7 @@ DECLARE_QCA_GPIO_PINS(99); + .mux_bit = 2, \ + .pull_bit = 0, \ + .drv_bit = 6, \ ++ .od_bit = 12, \ + .oe_bit = 9, \ + .in_bit = 0, \ + .out_bit = 1, \ +--- a/drivers/pinctrl/qcom/pinctrl-msm.c ++++ b/drivers/pinctrl/qcom/pinctrl-msm.c +@@ -225,6 +225,10 @@ static int msm_config_reg(struct msm_pin + *bit = g->pull_bit; + *mask = 3; + break; ++ case PIN_CONFIG_DRIVE_OPEN_DRAIN: ++ *bit = g->od_bit; ++ *mask = 1; ++ break; + case PIN_CONFIG_DRIVE_STRENGTH: + *bit = g->drv_bit; + *mask = 7; +@@ -302,6 +306,12 @@ static int msm_config_group_get(struct p + if (!arg) + return -EINVAL; + break; ++ case PIN_CONFIG_DRIVE_OPEN_DRAIN: ++ /* Pin is not open-drain */ ++ if (!arg) ++ return -EINVAL; ++ arg = 1; ++ break; + case PIN_CONFIG_DRIVE_STRENGTH: + arg = msm_regval_to_drive(arg); + break; +@@ -374,6 +384,9 @@ static int msm_config_group_set(struct p + else + arg = MSM_PULL_UP; + break; ++ case PIN_CONFIG_DRIVE_OPEN_DRAIN: ++ arg = 1; ++ break; + case PIN_CONFIG_DRIVE_STRENGTH: + /* Check for invalid values */ + if (arg > 16 || arg < 2 || (arg % 2) != 0) +--- a/drivers/pinctrl/qcom/pinctrl-msm.h ++++ b/drivers/pinctrl/qcom/pinctrl-msm.h +@@ -38,6 +38,7 @@ struct msm_function { + * @mux_bit: Offset in @ctl_reg for the pinmux function selection. + * @pull_bit: Offset in @ctl_reg for the bias configuration. + * @drv_bit: Offset in @ctl_reg for the drive strength configuration. ++ * @od_bit: Offset in @ctl_reg for controlling open drain. + * @oe_bit: Offset in @ctl_reg for controlling output enable. + * @in_bit: Offset in @io_reg for the input bit value. + * @out_bit: Offset in @io_reg for the output bit value. +@@ -75,6 +76,7 @@ struct msm_pingroup { + unsigned pull_bit:5; + unsigned drv_bit:5; + ++ unsigned od_bit:5; + unsigned oe_bit:5; + unsigned in_bit:5; + unsigned out_bit:5; |