From f4cdf7ca9a1fdcca413157df19753f388a5a224e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 19 Aug 2026 10:09:22 -0700 Subject: Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 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 ... --- drivers/rtc/rtc-ftrtc010.c | 218 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 218 insertions(+) create mode 100644 drivers/rtc/rtc-ftrtc010.c (limited to 'drivers/rtc/rtc-ftrtc010.c') diff --git a/drivers/rtc/rtc-ftrtc010.c b/drivers/rtc/rtc-ftrtc010.c new file mode 100644 index 000000000..98fa0f518 --- /dev/null +++ b/drivers/rtc/rtc-ftrtc010.c @@ -0,0 +1,218 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Faraday Technology FTRTC010 driver + * + * Copyright (C) 2009 Janos Laube + * + * Original code for older kernel 2.6.15 are from Stormlinksemi + * first update from Janos Laube for > 2.6.29 kernels + * + * checkpatch fixes and usage of rtc-lib code + * Hans Ulli Kroll + */ + +#include +#include +#include +#include +#include +#include +#include + +#define DRV_NAME "rtc-ftrtc010" + +MODULE_AUTHOR("Hans Ulli Kroll "); +MODULE_DESCRIPTION("RTC driver for Gemini SoC"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" DRV_NAME); + +struct ftrtc010_rtc { + void __iomem *rtc_base; + int rtc_irq; + struct clk *pclk; + struct clk *extclk; +}; + +enum ftrtc010_rtc_offsets { + FTRTC010_RTC_SECOND = 0x00, + FTRTC010_RTC_MINUTE = 0x04, + FTRTC010_RTC_HOUR = 0x08, + FTRTC010_RTC_DAYS = 0x0C, + FTRTC010_RTC_ALARM_SECOND = 0x10, + FTRTC010_RTC_ALARM_MINUTE = 0x14, + FTRTC010_RTC_ALARM_HOUR = 0x18, + FTRTC010_RTC_RECORD = 0x1C, + FTRTC010_RTC_CR = 0x20, +}; + +static irqreturn_t ftrtc010_rtc_interrupt(int irq, void *dev) +{ + return IRQ_HANDLED; +} + +/* + * Looks like the RTC in the Gemini SoC is (totaly) broken + * We can't read/write directly the time from RTC registers. + * We must do some "offset" calculation to get the real time + * + * This FIX works pretty fine and Stormlinksemi aka Cortina-Networks does + * the same thing, without the rtc-lib.c calls. + */ + +static int ftrtc010_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + struct ftrtc010_rtc *rtc = dev_get_drvdata(dev); + + u32 days, hour, min, sec, offset; + timeu64_t time; + + sec = readl(rtc->rtc_base + FTRTC010_RTC_SECOND); + min = readl(rtc->rtc_base + FTRTC010_RTC_MINUTE); + hour = readl(rtc->rtc_base + FTRTC010_RTC_HOUR); + days = readl(rtc->rtc_base + FTRTC010_RTC_DAYS); + offset = readl(rtc->rtc_base + FTRTC010_RTC_RECORD); + + time = offset + days * 86400 + hour * 3600 + min * 60 + sec; + + rtc_time64_to_tm(time, tm); + + return 0; +} + +static int ftrtc010_rtc_set_time(struct device *dev, struct rtc_time *tm) +{ + struct ftrtc010_rtc *rtc = dev_get_drvdata(dev); + u32 sec, min, hour, day, offset; + timeu64_t time; + + time = rtc_tm_to_time64(tm); + + sec = readl(rtc->rtc_base + FTRTC010_RTC_SECOND); + min = readl(rtc->rtc_base + FTRTC010_RTC_MINUTE); + hour = readl(rtc->rtc_base + FTRTC010_RTC_HOUR); + day = readl(rtc->rtc_base + FTRTC010_RTC_DAYS); + + offset = time - (day * 86400 + hour * 3600 + min * 60 + sec); + + writel(offset, rtc->rtc_base + FTRTC010_RTC_RECORD); + writel(0x01, rtc->rtc_base + FTRTC010_RTC_CR); + + return 0; +} + +static const struct rtc_class_ops ftrtc010_rtc_ops = { + .read_time = ftrtc010_rtc_read_time, + .set_time = ftrtc010_rtc_set_time, +}; + +static int ftrtc010_rtc_probe(struct platform_device *pdev) +{ + u32 days, hour, min, sec; + struct ftrtc010_rtc *rtc; + struct device *dev = &pdev->dev; + struct resource *res; + struct rtc_device *rtc_dev; + int ret; + + rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL); + if (unlikely(!rtc)) + return -ENOMEM; + platform_set_drvdata(pdev, rtc); + + rtc->pclk = devm_clk_get(dev, "PCLK"); + if (IS_ERR(rtc->pclk)) { + dev_err(dev, "could not get PCLK\n"); + } else { + ret = clk_prepare_enable(rtc->pclk); + if (ret) { + dev_err(dev, "failed to enable PCLK\n"); + return ret; + } + } + rtc->extclk = devm_clk_get(dev, "EXTCLK"); + if (IS_ERR(rtc->extclk)) { + dev_err(dev, "could not get EXTCLK\n"); + } else { + ret = clk_prepare_enable(rtc->extclk); + if (ret) { + dev_err(dev, "failed to enable EXTCLK\n"); + goto err_disable_pclk; + } + } + + rtc->rtc_irq = platform_get_irq(pdev, 0); + if (rtc->rtc_irq < 0) { + ret = rtc->rtc_irq; + goto err_disable_extclk; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + ret = -ENODEV; + goto err_disable_extclk; + } + + rtc->rtc_base = devm_ioremap(dev, res->start, + resource_size(res)); + if (!rtc->rtc_base) { + ret = -ENOMEM; + goto err_disable_extclk; + } + + rtc_dev = devm_rtc_allocate_device(dev); + if (IS_ERR(rtc_dev)) { + ret = PTR_ERR(rtc_dev); + goto err_disable_extclk; + } + + rtc_dev->ops = &ftrtc010_rtc_ops; + + sec = readl(rtc->rtc_base + FTRTC010_RTC_SECOND); + min = readl(rtc->rtc_base + FTRTC010_RTC_MINUTE); + hour = readl(rtc->rtc_base + FTRTC010_RTC_HOUR); + days = readl(rtc->rtc_base + FTRTC010_RTC_DAYS); + + rtc_dev->range_min = (u64)days * 86400 + hour * 3600 + min * 60 + sec; + rtc_dev->range_max = U32_MAX + rtc_dev->range_min; + + ret = devm_request_irq(dev, rtc->rtc_irq, ftrtc010_rtc_interrupt, + IRQF_SHARED, pdev->name, dev); + if (unlikely(ret)) + goto err_disable_extclk; + + return devm_rtc_register_device(rtc_dev); + +err_disable_extclk: + clk_disable_unprepare(rtc->extclk); +err_disable_pclk: + clk_disable_unprepare(rtc->pclk); + return ret; +} + +static void ftrtc010_rtc_remove(struct platform_device *pdev) +{ + struct ftrtc010_rtc *rtc = platform_get_drvdata(pdev); + + if (!IS_ERR(rtc->extclk)) + clk_disable_unprepare(rtc->extclk); + if (!IS_ERR(rtc->pclk)) + clk_disable_unprepare(rtc->pclk); +} + +static const struct of_device_id ftrtc010_rtc_dt_match[] = { + { .compatible = "cortina,gemini-rtc" }, + { .compatible = "faraday,ftrtc010" }, + { } +}; +MODULE_DEVICE_TABLE(of, ftrtc010_rtc_dt_match); + +static struct platform_driver ftrtc010_rtc_driver = { + .driver = { + .name = DRV_NAME, + .of_match_table = ftrtc010_rtc_dt_match, + }, + .probe = ftrtc010_rtc_probe, + .remove = ftrtc010_rtc_remove, +}; + +module_platform_driver_probe(ftrtc010_rtc_driver, ftrtc010_rtc_probe); -- cgit v1.3.1