From 5807bb4d8dd640685313ad67218b2fe0770d1d03 Mon Sep 17 00:00:00 2001 From: fred gao Date: Wed, 9 Jan 2019 09:21:14 +0800 Subject: [PATCH] drm/i915/gvt: Refine port select logic for CFL platform Refine the code since the port select definition for CFL is different than SKL/BXT. v2: - replace PCH_CNP with IS_COFFEELAKE. (zhenyu) Cc: Zhenyu Wang Reviewed-by: Zhenyu Wang Signed-off-by: fred gao Signed-off-by: Zhenyu Wang --- drivers/gpu/drm/i915/gvt/edid.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/gpu/drm/i915/gvt/edid.c b/drivers/gpu/drm/i915/gvt/edid.c index 752aa0fd1cc9..1fe6124918f1 100644 --- a/drivers/gpu/drm/i915/gvt/edid.c +++ b/drivers/gpu/drm/i915/gvt/edid.c @@ -77,6 +77,22 @@ static unsigned char edid_get_byte(struct intel_vgpu *vgpu) return chr; } +static inline int cnp_get_port_from_gmbus0(u32 gmbus0) +{ + int port_select = gmbus0 & _GMBUS_PIN_SEL_MASK; + int port = -EINVAL; + + if (port_select == GMBUS_PIN_1_BXT) + port = PORT_B; + else if (port_select == GMBUS_PIN_2_BXT) + port = PORT_C; + else if (port_select == GMBUS_PIN_3_BXT) + port = PORT_D; + else if (port_select == GMBUS_PIN_4_CNP) + port = PORT_E; + return port; +} + static inline int bxt_get_port_from_gmbus0(u32 gmbus0) { int port_select = gmbus0 & _GMBUS_PIN_SEL_MASK; @@ -133,6 +149,8 @@ static int gmbus0_mmio_write(struct intel_vgpu *vgpu, if (IS_BROXTON(dev_priv)) port = bxt_get_port_from_gmbus0(pin_select); + else if (IS_COFFEELAKE(dev_priv)) + port = cnp_get_port_from_gmbus0(pin_select); else port = get_port_from_gmbus0(pin_select); if (WARN_ON(port < 0)) -- 2.11.0