linux-kernel - [RFC v2 2/2] drm/amd/display: Use PPC FPU functions

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Date:   Wed, 21 Jul 2021 00:48:01 -0400
From:   Anson Jacob <Anson.Jacob@....com>
To:     <mpe@...erman.id.au>, <benh@...nel.crashing.org>,
        <paulus@...ba.org>, <christophe.leroy@...roup.eu>,
        <linuxppc-dev@...ts.ozlabs.org>, <amd-gfx@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>
CC:     <Harry.Wentland@....com>, <Sunpeng.Li@....com>,
        <Bhawanpreet.Lakha@....com>, <Rodrigo.Siqueira@....com>,
        <Aurabindo.Pillai@....com>, <qingqing.zhuo@....com>,
        <bindu.r@....com>, <roman.li@....com>, <Anson.Jacob@....com>,
        Christoph Hellwig <hch@...radead.org>,
        Harry Wentland <harry.wentland@....com>,
        Christian König <christian.koenig@....com>
Subject: [RFC v2 2/2] drm/amd/display: Use PPC FPU functions

Use kernel_fpu_begin & kernel_fpu_end for PPC

Depends on "ppc/fpu: Add generic FPU api similar to x86"

v2:
- Got rid of macro switch for PPC as header file with same
  name as x86 is added by previous patch in the series

Signed-off-by: Anson Jacob <Anson.Jacob@....com>
CC: Christoph Hellwig <hch@...radead.org>
CC: Rodrigo Siqueira <Rodrigo.Siqueira@....com>
CC: Harry Wentland <harry.wentland@....com>
CC: Christian König <christian.koenig@....com>
---
 drivers/gpu/drm/amd/display/dc/os_types.h | 29 -----------------------
 1 file changed, 29 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/os_types.h b/drivers/gpu/drm/amd/display/dc/os_types.h
index 126c2f3a4dd3..47ef434f93d8 100644
--- a/drivers/gpu/drm/amd/display/dc/os_types.h
+++ b/drivers/gpu/drm/amd/display/dc/os_types.h
@@ -51,38 +51,9 @@
 #define dm_error(fmt, ...) DRM_ERROR(fmt, ##__VA_ARGS__)
 
 #if defined(CONFIG_DRM_AMD_DC_DCN)
-#if defined(CONFIG_X86)
 #include <asm/fpu/api.h>
 #define DC_FP_START() kernel_fpu_begin()
 #define DC_FP_END() kernel_fpu_end()
-#elif defined(CONFIG_PPC64)
-#include <asm/switch_to.h>
-#include <asm/cputable.h>
-#define DC_FP_START() { \
-	if (cpu_has_feature(CPU_FTR_VSX_COMP)) { \
-		preempt_disable(); \
-		enable_kernel_vsx(); \
-	} else if (cpu_has_feature(CPU_FTR_ALTIVEC_COMP)) { \
-		preempt_disable(); \
-		enable_kernel_altivec(); \
-	} else if (!cpu_has_feature(CPU_FTR_FPU_UNAVAILABLE)) { \
-		preempt_disable(); \
-		enable_kernel_fp(); \
-	} \
-}
-#define DC_FP_END() { \
-	if (cpu_has_feature(CPU_FTR_VSX_COMP)) { \
-		disable_kernel_vsx(); \
-		preempt_enable(); \
-	} else if (cpu_has_feature(CPU_FTR_ALTIVEC_COMP)) { \
-		disable_kernel_altivec(); \
-		preempt_enable(); \
-	} else if (!cpu_has_feature(CPU_FTR_FPU_UNAVAILABLE)) { \
-		disable_kernel_fp(); \
-		preempt_enable(); \
-	} \
-}
-#endif
 #endif
 
 /*
-- 
2.25.1