From cf9610f9116d55c5a66ef9f1faecacabd93a9322 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Mon, 24 Aug 2026 08:46:03 -0700 Subject: Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ... --- drivers/gpu/host1x/mipi.c | 195 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 195 insertions(+) create mode 100644 drivers/gpu/host1x/mipi.c (limited to 'drivers/gpu/host1x/mipi.c') diff --git a/drivers/gpu/host1x/mipi.c b/drivers/gpu/host1x/mipi.c new file mode 100644 index 000000000..988681423 --- /dev/null +++ b/drivers/gpu/host1x/mipi.c @@ -0,0 +1,195 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2013 NVIDIA Corporation + * Copyright (C) 2025 Svyatoslav Ryhel + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* only need to support one provider */ +static struct { + struct device_node *np; + const struct tegra_mipi_ops *ops; +} provider; + +/** + * tegra_mipi_enable - Enable the Tegra MIPI calibration device. + * @device: Handle to the Tegra MIPI calibration device. + * + * This calls the enable sequence for the Tegra MIPI calibration device. + * + * Returns 0 on success or a negative error code on failure. + */ +int tegra_mipi_enable(struct tegra_mipi_device *device) +{ + if (device->ops->enable) + return device->ops->enable(device); + + return 0; +} +EXPORT_SYMBOL(tegra_mipi_enable); + +/** + * tegra_mipi_disable - Disable the Tegra MIPI calibration device. + * @device: Handle to the Tegra MIPI calibration device. + * + * This calls the disable sequence for the Tegra MIPI calibration device. + * + * Returns 0 on success or a negative error code on failure. + */ +int tegra_mipi_disable(struct tegra_mipi_device *device) +{ + if (device->ops->disable) + return device->ops->disable(device); + + return 0; +} +EXPORT_SYMBOL(tegra_mipi_disable); + +/** + * tegra_mipi_start_calibration - Start the Tegra MIPI calibration sequence. + * @device: Handle to the Tegra MIPI calibration device. + * + * This initiates the calibration of CSI/DSI interfaces via the Tegra MIPI + * calibration device. + * + * Returns 0 on success or a negative error code on failure. + */ +int tegra_mipi_start_calibration(struct tegra_mipi_device *device) +{ + if (device->ops->start_calibration) + return device->ops->start_calibration(device); + + return 0; +} +EXPORT_SYMBOL(tegra_mipi_start_calibration); + +/** + * tegra_mipi_finish_calibration - Finish the Tegra MIPI calibration sequence. + * @device: Handle to the Tegra MIPI calibration device. + * + * This completes the calibration of CSI/DSI interfaces via the Tegra MIPI + * calibration device. + * + * Returns 0 on success or a negative error code on failure. + */ +int tegra_mipi_finish_calibration(struct tegra_mipi_device *device) +{ + if (device->ops->finish_calibration) + return device->ops->finish_calibration(device); + + return 0; +} +EXPORT_SYMBOL(tegra_mipi_finish_calibration); + +/** + * tegra_mipi_request - Request a Tegra MIPI calibration device. + * @device: Handle of the device requesting the MIPI calibration function. + * @np: Device node pointer of the device requesting the MIPI calibration + * function. + * + * This function requests a reference to a Tegra MIPI calibration device. + * + * Returns a pointer to the Tegra MIPI calibration device on success, + * or an ERR_PTR-encoded error code on failure. + */ +struct tegra_mipi_device *tegra_mipi_request(struct device *device, + struct device_node *np) +{ + struct tegra_mipi_device *mipidev; + struct of_phandle_args args; + int err; + + err = of_parse_phandle_with_args(np, "nvidia,mipi-calibrate", + "#nvidia,mipi-calibrate-cells", 0, + &args); + if (err < 0) + return ERR_PTR(err); + + if (provider.np != args.np) { + err = -ENODEV; + goto out; + } + + mipidev = kzalloc_obj(*mipidev); + if (!mipidev) { + err = -ENOMEM; + goto out; + } + + mipidev->pdev = of_find_device_by_node(args.np); + if (!mipidev->pdev) { + err = -ENODEV; + goto free; + } + + of_node_put(args.np); + + mipidev->ops = provider.ops; + mipidev->pads = args.args[0]; + + return mipidev; + +free: + kfree(mipidev); +out: + of_node_put(args.np); + return ERR_PTR(err); +} +EXPORT_SYMBOL(tegra_mipi_request); + +/** + * tegra_mipi_free - Free a Tegra MIPI calibration device. + * @mipidev: Handle to the Tegra MIPI calibration device. + * + * This function releases a reference to a Tegra MIPI calibration device + * previously requested by tegra_mipi_request(). + */ +void tegra_mipi_free(struct tegra_mipi_device *mipidev) +{ + platform_device_put(mipidev->pdev); + kfree(mipidev); +} +EXPORT_SYMBOL(tegra_mipi_free); + +static void tegra_mipi_remove_provider(void *data) +{ + provider.np = NULL; + provider.ops = NULL; +} + +/** + * devm_tegra_mipi_add_provider - Managed registration of a Tegra MIPI + * calibration function provider. + * @device: Handle to the device providing the MIPI calibration function. + * @np: Device node pointer of the device providing the MIPI calibration + * function. + * @ops: Operations supported by the MIPI calibration device. + * + * This registers a device that provides MIPI calibration functions. + * For Tegra20 and Tegra30, this is the CSI block, while Tegra114 and + * newer SoC generations have a dedicated hardware block for these + * functions. + * + * Returns 0 on success or a negative error code on failure. + */ +int devm_tegra_mipi_add_provider(struct device *device, struct device_node *np, + const struct tegra_mipi_ops *ops) +{ + if (provider.np) + return -EBUSY; + + provider.np = np; + provider.ops = ops; + + return devm_add_action_or_reset(device, tegra_mipi_remove_provider, NULL); +} +EXPORT_SYMBOL(devm_tegra_mipi_add_provider); -- cgit v1.3.1