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793f8ab62c
Add kernel patches for version 6.1. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
132 lines
4.2 KiB
Diff
132 lines
4.2 KiB
Diff
From e75de2a5fd951a0244b2000dc2ad3922b0ab0f5e Mon Sep 17 00:00:00 2001
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From: Maxime Ripard <maxime@cerno.tech>
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Date: Wed, 23 Nov 2022 16:00:53 +0100
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Subject: [PATCH] drm/vc4: hvs: Provide a function to initialize the
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HVS structure
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We'll need to initialize the HVS structure without a backing device to
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create a mock we'll use for testing.
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Split the structure initialization part into a separate function.
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Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
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Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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---
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drivers/gpu/drm/vc4/vc4_drv.h | 1 +
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drivers/gpu/drm/vc4/vc4_hvs.c | 73 +++++++++++++++++++++--------------
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2 files changed, 44 insertions(+), 30 deletions(-)
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--- a/drivers/gpu/drm/vc4/vc4_drv.h
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+++ b/drivers/gpu/drm/vc4/vc4_drv.h
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@@ -1036,6 +1036,7 @@ void vc4_irq_reset(struct drm_device *de
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/* vc4_hvs.c */
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extern struct platform_driver vc4_hvs_driver;
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+struct vc4_hvs *__vc4_hvs_alloc(struct vc4_dev *vc4, struct platform_device *pdev);
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void vc4_hvs_stop_channel(struct vc4_hvs *hvs, unsigned int output);
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int vc4_hvs_get_fifo_from_output(struct vc4_hvs *hvs, unsigned int output);
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u8 vc4_hvs_get_fifo_frame_count(struct vc4_hvs *hvs, unsigned int fifo);
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--- a/drivers/gpu/drm/vc4/vc4_hvs.c
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+++ b/drivers/gpu/drm/vc4/vc4_hvs.c
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@@ -1010,6 +1010,46 @@ int vc4_hvs_debugfs_init(struct drm_mino
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return 0;
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}
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+struct vc4_hvs *__vc4_hvs_alloc(struct vc4_dev *vc4, struct platform_device *pdev)
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+{
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+ struct drm_device *drm = &vc4->base;
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+ struct vc4_hvs *hvs;
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+
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+ hvs = drmm_kzalloc(drm, sizeof(*hvs), GFP_KERNEL);
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+ if (!hvs)
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+ return ERR_PTR(-ENOMEM);
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+
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+ hvs->vc4 = vc4;
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+ hvs->pdev = pdev;
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+
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+ spin_lock_init(&hvs->mm_lock);
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+
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+ /* Set up the HVS display list memory manager. We never
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+ * overwrite the setup from the bootloader (just 128b out of
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+ * our 16K), since we don't want to scramble the screen when
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+ * transitioning from the firmware's boot setup to runtime.
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+ */
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+ drm_mm_init(&hvs->dlist_mm,
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+ HVS_BOOTLOADER_DLIST_END,
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+ (SCALER_DLIST_SIZE >> 2) - HVS_BOOTLOADER_DLIST_END);
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+
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+ /* Set up the HVS LBM memory manager. We could have some more
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+ * complicated data structure that allowed reuse of LBM areas
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+ * between planes when they don't overlap on the screen, but
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+ * for now we just allocate globally.
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+ */
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+ if (!vc4->is_vc5)
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+ /* 48k words of 2x12-bit pixels */
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+ drm_mm_init(&hvs->lbm_mm, 0, 48 * 1024);
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+ else
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+ /* 60k words of 4x12-bit pixels */
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+ drm_mm_init(&hvs->lbm_mm, 0, 60 * 1024);
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+
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+ vc4->hvs = hvs;
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+
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+ return hvs;
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+}
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+
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static int vc4_hvs_bind(struct device *dev, struct device *master, void *data)
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{
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struct platform_device *pdev = to_platform_device(dev);
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@@ -1020,11 +1060,9 @@ static int vc4_hvs_bind(struct device *d
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u32 dispctrl;
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u32 reg, top;
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- hvs = drmm_kzalloc(drm, sizeof(*hvs), GFP_KERNEL);
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- if (!hvs)
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- return -ENOMEM;
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- hvs->vc4 = vc4;
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- hvs->pdev = pdev;
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+ hvs = __vc4_hvs_alloc(vc4, NULL);
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+ if (IS_ERR(hvs))
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+ return PTR_ERR(hvs);
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hvs->regs = vc4_ioremap_regs(pdev, 0);
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if (IS_ERR(hvs->regs))
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@@ -1077,29 +1115,6 @@ static int vc4_hvs_bind(struct device *d
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else
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hvs->dlist = hvs->regs + SCALER5_DLIST_START;
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- spin_lock_init(&hvs->mm_lock);
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-
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- /* Set up the HVS display list memory manager. We never
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- * overwrite the setup from the bootloader (just 128b out of
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- * our 16K), since we don't want to scramble the screen when
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- * transitioning from the firmware's boot setup to runtime.
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- */
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- drm_mm_init(&hvs->dlist_mm,
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- HVS_BOOTLOADER_DLIST_END,
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- (SCALER_DLIST_SIZE >> 2) - HVS_BOOTLOADER_DLIST_END);
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-
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- /* Set up the HVS LBM memory manager. We could have some more
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- * complicated data structure that allowed reuse of LBM areas
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- * between planes when they don't overlap on the screen, but
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- * for now we just allocate globally.
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- */
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- if (!vc4->is_vc5)
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- /* 48k words of 2x12-bit pixels */
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- drm_mm_init(&hvs->lbm_mm, 0, 48 * 1024);
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- else
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- /* 60k words of 4x12-bit pixels */
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- drm_mm_init(&hvs->lbm_mm, 0, 60 * 1024);
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-
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/* Upload filter kernels. We only have the one for now, so we
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* keep it around for the lifetime of the driver.
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*/
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@@ -1109,8 +1124,6 @@ static int vc4_hvs_bind(struct device *d
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if (ret)
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return ret;
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- vc4->hvs = hvs;
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-
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reg = HVS_READ(SCALER_DISPECTRL);
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reg &= ~SCALER_DISPECTRL_DSP2_MUX_MASK;
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HVS_WRITE(SCALER_DISPECTRL,
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