mirror of
https://github.com/Fishwaldo/build.git
synced 2025-03-22 14:51:41 +00:00
144 lines
4.7 KiB
Diff
144 lines
4.7 KiB
Diff
From 399e0d92074e30643eee980e744b6cac64bef7a2 Mon Sep 17 00:00:00 2001
|
|
From: Lima Project Developers <dri-devel@lists.freedesktop.org>
|
|
Date: Mon, 14 May 2018 21:47:28 +0800
|
|
Subject: [PATCH 046/146] drm/lima: add PMU related functions
|
|
|
|
Signed-off-by: Qiang Yu <yuq825@gmail.com>
|
|
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
|
|
---
|
|
drivers/gpu/drm/lima/lima_pmu.c | 85 +++++++++++++++++++++++++++++++++
|
|
drivers/gpu/drm/lima/lima_pmu.h | 30 ++++++++++++
|
|
2 files changed, 115 insertions(+)
|
|
create mode 100644 drivers/gpu/drm/lima/lima_pmu.c
|
|
create mode 100644 drivers/gpu/drm/lima/lima_pmu.h
|
|
|
|
diff --git a/drivers/gpu/drm/lima/lima_pmu.c b/drivers/gpu/drm/lima/lima_pmu.c
|
|
new file mode 100644
|
|
index 000000000000..255a64e9f265
|
|
--- /dev/null
|
|
+++ b/drivers/gpu/drm/lima/lima_pmu.c
|
|
@@ -0,0 +1,85 @@
|
|
+/*
|
|
+ * Copyright (C) 2017-2018 Lima Project
|
|
+ *
|
|
+ * Permission is hereby granted, free of charge, to any person obtaining a
|
|
+ * copy of this software and associated documentation files (the "Software"),
|
|
+ * to deal in the Software without restriction, including without limitation
|
|
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
+ * and/or sell copies of the Software, and to permit persons to whom the
|
|
+ * Software is furnished to do so, subject to the following conditions:
|
|
+ *
|
|
+ * The above copyright notice and this permission notice shall be included in
|
|
+ * all copies or substantial portions of the Software.
|
|
+ *
|
|
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
+ * OTHER DEALINGS IN THE SOFTWARE.
|
|
+ */
|
|
+
|
|
+#include <linux/of.h>
|
|
+#include <linux/io.h>
|
|
+#include <linux/device.h>
|
|
+
|
|
+#include "lima_device.h"
|
|
+#include "lima_pmu.h"
|
|
+#include "lima_regs.h"
|
|
+
|
|
+#define pmu_write(reg, data) writel(data, ip->iomem + LIMA_PMU_##reg)
|
|
+#define pmu_read(reg) readl(ip->iomem + LIMA_PMU_##reg)
|
|
+
|
|
+static int lima_pmu_wait_cmd(struct lima_ip *ip)
|
|
+{
|
|
+ struct lima_device *dev = ip->dev;
|
|
+ u32 stat, timeout;
|
|
+
|
|
+ for (timeout = 1000000; timeout > 0; timeout--) {
|
|
+ stat = pmu_read(INT_RAWSTAT);
|
|
+ if (stat & LIMA_PMU_INT_CMD_MASK)
|
|
+ break;
|
|
+ }
|
|
+
|
|
+ if (!timeout) {
|
|
+ dev_err(dev->dev, "timeout wait pmd cmd\n");
|
|
+ return -ETIMEDOUT;
|
|
+ }
|
|
+
|
|
+ pmu_write(INT_CLEAR, LIMA_PMU_INT_CMD_MASK);
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+int lima_pmu_init(struct lima_ip *ip)
|
|
+{
|
|
+ int err;
|
|
+ u32 stat;
|
|
+ struct lima_device *dev = ip->dev;
|
|
+ struct device_node *np = dev->dev->of_node;
|
|
+
|
|
+ /* If this value is too low, when in high GPU clk freq,
|
|
+ * GPU will be in unstable state. */
|
|
+ if (of_property_read_u32(np, "switch-delay", &ip->data.switch_delay))
|
|
+ ip->data.switch_delay = 0xff;
|
|
+
|
|
+ pmu_write(INT_MASK, 0);
|
|
+ pmu_write(SW_DELAY, ip->data.switch_delay);
|
|
+
|
|
+ /* status reg 1=off 0=on */
|
|
+ stat = pmu_read(STATUS);
|
|
+
|
|
+ /* power up all ip */
|
|
+ if (stat) {
|
|
+ pmu_write(POWER_UP, stat);
|
|
+ err = lima_pmu_wait_cmd(ip);
|
|
+ if (err)
|
|
+ return err;
|
|
+ }
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+void lima_pmu_fini(struct lima_ip *ip)
|
|
+{
|
|
+
|
|
+}
|
|
diff --git a/drivers/gpu/drm/lima/lima_pmu.h b/drivers/gpu/drm/lima/lima_pmu.h
|
|
new file mode 100644
|
|
index 000000000000..fb68a7059a37
|
|
--- /dev/null
|
|
+++ b/drivers/gpu/drm/lima/lima_pmu.h
|
|
@@ -0,0 +1,30 @@
|
|
+/*
|
|
+ * Copyright (C) 2017-2018 Lima Project
|
|
+ *
|
|
+ * Permission is hereby granted, free of charge, to any person obtaining a
|
|
+ * copy of this software and associated documentation files (the "Software"),
|
|
+ * to deal in the Software without restriction, including without limitation
|
|
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
+ * and/or sell copies of the Software, and to permit persons to whom the
|
|
+ * Software is furnished to do so, subject to the following conditions:
|
|
+ *
|
|
+ * The above copyright notice and this permission notice shall be included in
|
|
+ * all copies or substantial portions of the Software.
|
|
+ *
|
|
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
+ * OTHER DEALINGS IN THE SOFTWARE.
|
|
+ */
|
|
+#ifndef __LIMA_PMU_H__
|
|
+#define __LIMA_PMU_H__
|
|
+
|
|
+struct lima_ip;
|
|
+
|
|
+int lima_pmu_init(struct lima_ip *ip);
|
|
+void lima_pmu_fini(struct lima_ip *ip);
|
|
+
|
|
+#endif
|
|
--
|
|
2.17.1
|
|
|