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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
| commit | f4cdf7ca9a1fdcca413157df19753f388a5a224e (patch) | |
| tree | 60a31895b2446cd7fa27514e8c2843534a0de0da /drivers/memory/pl353-smc.c | |
| download | linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip | |
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab:
- v4l2-core: added ISP statistics support and per-block validation
- v4l2-core: Allow unknown HDR10 white point and luminance
- New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor
- New codec: Milos: VPU v2.0 codec support
- isp driver: gained support for Dreamchip RPPX1 ISP framework
- vsp1 driver: gained support for RZ/T2H and RZ/N2H
- Novalake driver: gained CVS support for new NVL hardware
- dvb-core: fix feed leak on failed DMX_ADD_PID
- several driver fixes, cleanups and minor improvements
* tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits)
media: ipu-bridge: check all DMI entries when overriding sensor rotation
media: v4l2-async: avoid deleting unlinked ASC entry on link error
media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement
media: intel/ipu6: fix async notifier cleanup leak on parse error
media: staging/ipu7: fix async notifier UAF on probe error path
media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path
media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem()
media: rcar-isp: Fix VSPX reference leaks
media: rcar-isp: Release ISPCORE resources
media: i2c: imx415: Release runtime PM reference on VBLANK error
media: i2c: imx415: Return test pattern write errors
media: renesas: vsp1: Declare index variables in for loop statement
media: renesas: vsp1: Make reset control optional to support platforms without a reset line
media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs
media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs
media: nxp: imx8-isi: Add additional 32-bit RGB format support
media: nxp: imx8-isi: Add 16-bit raw Bayer format support
media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams
media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks
media: nxp: imx8-isi: Correct color map between V4L2 and ISI
...
Diffstat (limited to 'drivers/memory/pl353-smc.c')
| -rw-r--r-- | drivers/memory/pl353-smc.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/drivers/memory/pl353-smc.c b/drivers/memory/pl353-smc.c new file mode 100644 index 000000000..28a8cc560 --- /dev/null +++ b/drivers/memory/pl353-smc.c @@ -0,0 +1,134 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ARM PL353 SMC driver + * + * Copyright (C) 2012 - 2018 Xilinx, Inc + * Author: Punnaiah Choudary Kalluri <punnaiah@xilinx.com> + * Author: Naga Sureshkumar Relli <nagasure@xilinx.com> + */ + +#include <linux/clk.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/amba/bus.h> + +/** + * struct pl353_smc_data - Private smc driver structure + * @memclk: Pointer to the peripheral clock + * @aclk: Pointer to the AXI peripheral clock + */ +struct pl353_smc_data { + struct clk *memclk; + struct clk *aclk; +}; + +static int __maybe_unused pl353_smc_suspend(struct device *dev) +{ + struct pl353_smc_data *pl353_smc = dev_get_drvdata(dev); + + clk_disable(pl353_smc->memclk); + clk_disable(pl353_smc->aclk); + + return 0; +} + +static int __maybe_unused pl353_smc_resume(struct device *dev) +{ + struct pl353_smc_data *pl353_smc = dev_get_drvdata(dev); + int ret; + + ret = clk_enable(pl353_smc->aclk); + if (ret) { + dev_err(dev, "Cannot enable axi domain clock.\n"); + return ret; + } + + ret = clk_enable(pl353_smc->memclk); + if (ret) { + dev_err(dev, "Cannot enable memory clock.\n"); + clk_disable(pl353_smc->aclk); + return ret; + } + + return ret; +} + +static SIMPLE_DEV_PM_OPS(pl353_smc_dev_pm_ops, pl353_smc_suspend, + pl353_smc_resume); + +static const struct of_device_id pl353_smc_supported_children[] = { + { + .compatible = "cfi-flash" + }, + { + .compatible = "arm,pl353-nand-r2p1", + }, + {} +}; + +static int pl353_smc_probe(struct amba_device *adev, const struct amba_id *id) +{ + struct device_node *of_node = adev->dev.of_node; + const struct of_device_id *match = NULL; + struct pl353_smc_data *pl353_smc; + + pl353_smc = devm_kzalloc(&adev->dev, sizeof(*pl353_smc), GFP_KERNEL); + if (!pl353_smc) + return -ENOMEM; + + pl353_smc->aclk = devm_clk_get_enabled(&adev->dev, "apb_pclk"); + if (IS_ERR(pl353_smc->aclk)) + return dev_err_probe(&adev->dev, PTR_ERR(pl353_smc->aclk), + "aclk clock not found.\n"); + + pl353_smc->memclk = devm_clk_get_enabled(&adev->dev, "memclk"); + if (IS_ERR(pl353_smc->memclk)) + return dev_err_probe(&adev->dev, PTR_ERR(pl353_smc->memclk), + "memclk clock not found.\n"); + + amba_set_drvdata(adev, pl353_smc); + + /* Find compatible children. Only a single child is supported */ + for_each_available_child_of_node_scoped(of_node, child) { + match = of_match_node(pl353_smc_supported_children, child); + if (!match) { + dev_warn(&adev->dev, "unsupported child node\n"); + continue; + } + of_platform_device_create(child, NULL, &adev->dev); + break; + } + if (!match) { + dev_err(&adev->dev, "no matching children\n"); + return -ENODEV; + } + + return 0; +} + +static const struct amba_id pl353_ids[] = { + { + .id = 0x00041353, + .mask = 0x000fffff, + }, + { 0, 0 }, +}; +MODULE_DEVICE_TABLE(amba, pl353_ids); + +static struct amba_driver pl353_smc_driver = { + .drv = { + .name = "pl353-smc", + .pm = &pl353_smc_dev_pm_ops, + }, + .id_table = pl353_ids, + .probe = pl353_smc_probe, +}; + +module_amba_driver(pl353_smc_driver); + +MODULE_AUTHOR("Xilinx, Inc."); +MODULE_DESCRIPTION("ARM PL353 SMC Driver"); +MODULE_LICENSE("GPL"); |
