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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /drivers/rtc/proc.c
downloadlinux-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/rtc/proc.c')
-rw-r--r--drivers/rtc/proc.c92
1 files changed, 92 insertions, 0 deletions
diff --git a/drivers/rtc/proc.c b/drivers/rtc/proc.c
new file mode 100644
index 000000000..cbcdbb19d
--- /dev/null
+++ b/drivers/rtc/proc.c
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * RTC subsystem, proc interface
+ *
+ * Copyright (C) 2005-06 Tower Technologies
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * based on arch/arm/common/rtctime.c
+ */
+
+#include <linux/module.h>
+#include <linux/rtc.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+
+#include "rtc-core.h"
+
+#define NAME_SIZE 10
+
+#if defined(CONFIG_RTC_HCTOSYS_DEVICE)
+static bool is_rtc_hctosys(struct rtc_device *rtc)
+{
+ int size;
+ char name[NAME_SIZE];
+
+ size = snprintf(name, NAME_SIZE, "rtc%d", rtc->id);
+ if (size >= NAME_SIZE)
+ return false;
+
+ return !strncmp(name, CONFIG_RTC_HCTOSYS_DEVICE, NAME_SIZE);
+}
+#else
+static bool is_rtc_hctosys(struct rtc_device *rtc)
+{
+ return (rtc->id == 0);
+}
+#endif
+
+static int rtc_proc_show(struct seq_file *seq, void *offset)
+{
+ int err;
+ struct rtc_device *rtc = seq->private;
+ const struct rtc_class_ops *ops = rtc->ops;
+ struct rtc_wkalrm alrm;
+ struct rtc_time tm;
+
+ err = rtc_read_time(rtc, &tm);
+ if (err == 0) {
+ seq_printf(seq,
+ "rtc_time\t: %ptRt\n"
+ "rtc_date\t: %ptRd\n",
+ &tm, &tm);
+ }
+
+ err = rtc_read_alarm(rtc, &alrm);
+ if (err == 0) {
+ seq_printf(seq, "alrm_time\t: %ptRt\n", &alrm.time);
+ seq_printf(seq, "alrm_date\t: %ptRd\n", &alrm.time);
+ seq_printf(seq, "alarm_IRQ\t: %s\n",
+ alrm.enabled ? "yes" : "no");
+ seq_printf(seq, "alrm_pending\t: %s\n",
+ alrm.pending ? "yes" : "no");
+ seq_printf(seq, "update IRQ enabled\t: %s\n",
+ (rtc->uie_rtctimer.enabled) ? "yes" : "no");
+ seq_printf(seq, "periodic IRQ enabled\t: %s\n",
+ (rtc->pie_enabled) ? "yes" : "no");
+ seq_printf(seq, "periodic IRQ frequency\t: %d\n",
+ rtc->irq_freq);
+ seq_printf(seq, "max user IRQ frequency\t: %d\n",
+ rtc->max_user_freq);
+ }
+
+ seq_printf(seq, "24hr\t\t: yes\n");
+
+ if (ops->proc)
+ ops->proc(rtc->dev.parent, seq);
+
+ return 0;
+}
+
+void rtc_proc_add_device(struct rtc_device *rtc)
+{
+ if (is_rtc_hctosys(rtc))
+ proc_create_single_data("driver/rtc", 0, NULL, rtc_proc_show,
+ rtc);
+}
+
+void rtc_proc_del_device(struct rtc_device *rtc)
+{
+ if (is_rtc_hctosys(rtc))
+ remove_proc_entry("driver/rtc", NULL);
+}