Merge "ARM: dts: msm: Add TLMM GPIOs for direct connect support on SA8195 VM" (62eb7ca7) · Commits · e / devices / android_kernel_xiaomi_sm6125

Documentation/devicetree/bindings/pinctrl/qcom,sdmshrike-pinctrl

+7 −0

Original line number	Diff line number	Diff line
		@@ -47,6 +47,13 @@ sdmshrike platform.
		Definition: must be 2. Specifying the pin number and flags, as defined
		in <dt-bindings/gpio/gpio.h>

		- dirconn-list:
		Usage: optional
		Value type: <prop-encoded-array>
		Definition: a 3-tuple list which contains the mapping of GPIO pin to
		hardware IRQ, and a boolean for enabling the TLMM direct
		connect interrupt for the pin.

		Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
		a general description of GPIO and interrupt bindings.

arch/arm64/boot/dts/qcom/sa8195-vm.dtsi

+4 −0

Original line number	Diff line number	Diff line
		@@ -378,3 +378,7 @@
		#include "sa8155-vm-audio.dtsi"
		#include "sa8195-vm-pcie.dtsi"
		#include "pm8195-vm.dtsi"

		&tlmm {
		dirconn-list = <37 216 1>;
		};

drivers/pinctrl/qcom/pinctrl-sdmshrike.c

+57 −1

Original line number	Diff line number	Diff line
		@@ -2257,7 +2257,7 @@ static struct msm_dir_conn sdmshrike_dir_conn[] = {
		{-1, 209},
		};

		static const struct msm_pinctrl_soc_data sdmshrike_pinctrl = {
		static struct msm_pinctrl_soc_data sdmshrike_pinctrl = {
		.pins = sdmshrike_pins,
		.npins = ARRAY_SIZE(sdmshrike_pins),
		.functions = sdmshrike_functions,
		@@ -2270,8 +2270,64 @@ static const struct msm_pinctrl_soc_data sdmshrike_pinctrl = {
		.dir_conn_irq_base = 216,
		};

		static int sdmshrike_pinctrl_parse_dt(struct platform_device *pdev)
		{
		const __be32 *prop;
		struct msm_dir_conn *dir_conn_list;
		uint32_t dir_conn_length, iterator = 0;
		int i, length, *dir_conn_entries, num_dir_conns;

		prop = of_get_property(pdev->dev.of_node, "dirconn-list",
		&length);

		dir_conn_length = length / sizeof(u32);

		dir_conn_entries = devm_kcalloc(&pdev->dev,
		dir_conn_length, sizeof(uint32_t), GFP_KERNEL);
		if (!dir_conn_entries)
		return -ENOMEM;

		for (i = 0; i < dir_conn_length; i++)
		dir_conn_entries[i] = be32_to_cpu(prop[i]);

		if (dir_conn_length % 3) {
		dev_err(&pdev->dev,
		"Can't parse an entry with fewer than three values\n");
		return -EINVAL;
		};

		num_dir_conns = (dir_conn_length / 3);

		dir_conn_list = devm_kcalloc(&pdev->dev,
		num_dir_conns, sizeof(*dir_conn_list), GFP_KERNEL);
		if (!dir_conn_list)
		return -ENOMEM;

		for (i = 0; i < num_dir_conns; i++) {
		dir_conn_list[i].gpio = dir_conn_entries[iterator++];
		dir_conn_list[i].hwirq = dir_conn_entries[iterator++];
		dir_conn_list[i].tlmm_dc = dir_conn_entries[iterator++];
		}

		sdmshrike_pinctrl.dir_conn = dir_conn_list;
		sdmshrike_pinctrl.n_dir_conns = num_dir_conns;

		return 0;
		}

		static int sdmshrike_pinctrl_probe(struct platform_device *pdev)
		{
		int len, ret;

		if (of_find_property(pdev->dev.of_node, "dirconn-list", &len)) {
		ret = sdmshrike_pinctrl_parse_dt(pdev);
		if (ret) {
		dev_err(&pdev->dev,
		"Unable to parse TLMM direct connects\n");
		return ret;
		}
		}

		return msm_pinctrl_probe(pdev, &sdmshrike_pinctrl);
		}