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https://github.com/Ysurac/openmptcprouter.git
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68 lines
2 KiB
Diff
68 lines
2 KiB
Diff
From d87e1a23e51158f9c2923f6213a42d5e942a4091 Mon Sep 17 00:00:00 2001
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From: Frank Wunderlich <frank-w@public-files.de>
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Date: Thu, 23 Jan 2020 07:16:30 +0100
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Subject: [PATCH] lima: power on/off via register (function)
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---
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drivers/gpu/drm/lima/lima_device.c | 31 ++++++++++++++++++++++++++++++
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1 file changed, 31 insertions(+)
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diff --git a/drivers/gpu/drm/lima/lima_device.c b/drivers/gpu/drm/lima/lima_device.c
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index d86b8d81a483..7d5d45e176f2 100644
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--- a/drivers/gpu/drm/lima/lima_device.c
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+++ b/drivers/gpu/drm/lima/lima_device.c
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@@ -6,6 +6,7 @@
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#include <linux/clk.h>
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#include <linux/dma-mapping.h>
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#include <linux/platform_device.h>
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+#include <linux/pm_runtime.h>
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#include "lima_device.h"
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#include "lima_gp.h"
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@@ -287,11 +288,33 @@ static void lima_fini_pp_pipe(struct lima_device *dev)
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lima_sched_pipe_fini(pipe);
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}
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+void mtk_set_power(bool on)
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+{
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+ if (on) {
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+ void __iomem *wakeup_register;
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+ wakeup_register = ioremap(0x10003014 , 0x04);
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+ writel(0x00000001,wakeup_register); // this may be wrong, may need bitbang 0th bit to 1
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+ iounmap(wakeup_register);
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+ }else {
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+ void __iomem *powerdown_register;
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+ powerdown_register = ioremap(0x1000300C , 0x04); // powerdown register
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+ writel(0x00000001,powerdown_register); // this may be wrong, may need bitbang 0th bit to 1
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+ iounmap(powerdown_register);
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+ }
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+}
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+
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int lima_device_init(struct lima_device *ldev)
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{
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int err, i;
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struct resource *res;
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+ #ifdef CONFIG_MTK_COMBO_CHIP_CONSYS_7623
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+ mtk_set_power(true);
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+ pm_runtime_enable(ldev->dev);
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+ pm_runtime_set_active(ldev->dev);
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+ pm_runtime_get_sync(ldev->dev);
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+ #endif
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+
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dma_set_coherent_mask(ldev->dev, DMA_BIT_MASK(32));
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err = lima_clk_init(ldev);
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@@ -385,4 +408,12 @@ void lima_device_fini(struct lima_device *ldev)
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lima_regulator_fini(ldev);
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lima_clk_fini(ldev);
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+
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+ #ifdef CONFIG_MTK_COMBO_CHIP_CONSYS_7623
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+ pm_runtime_set_suspended(ldev->dev);
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+ pm_runtime_put_noidle(ldev->dev);
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+ pm_runtime_disable(ldev->dev);
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+
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+ mtk_set_power(false);
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+ #endif
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}
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