From: Girish Pathak <girish.pathak@arm.com>
To: edk2-devel@lists.01.org
Cc: ard.biesheuvel@linaro.org, leif.lindholm@linaro.org,
Matteo.Carlini@arm.com, Stephanie.Hughes-Fitt@arm.com,
nd@arm.com
Subject: [PATCH v3 08/16] ArmPlatformPkg: Implement LcdIdentify function for HDLCD GOP
Date: Tue, 20 Mar 2018 16:12:04 +0000 [thread overview]
Message-ID: <20180320161212.79120-9-girish.pathak@arm.com> (raw)
In-Reply-To: <20180320161212.79120-1-girish.pathak@arm.com>
From: Girish Pathak <girish.pathak at arm.com>
LcdIdentify function does not currently check presence of HDLCD
controller.
Implement this functionality by reading HDLCD_REG_VERSION and checking
against the PRODUCT_ID field to detect presence of HDLCD controller.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Girish Pathak <girish.pathak@arm.com>
Signed-off-by: Evan Lloyd <evan.lloyd@arm.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
ArmPlatformPkg/Library/HdLcd/HdLcd.c | 8 +++++++-
ArmPlatformPkg/Library/HdLcd/HdLcd.h | 2 ++
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/ArmPlatformPkg/Library/HdLcd/HdLcd.c b/ArmPlatformPkg/Library/HdLcd/HdLcd.c
index 28306c530e08b5e0fcef4308435045da3c9e093c..039048398c531ec944bc4b43a5551a554a368481 100644
--- a/ArmPlatformPkg/Library/HdLcd/HdLcd.c
+++ b/ArmPlatformPkg/Library/HdLcd/HdLcd.c
@@ -175,11 +175,17 @@ LcdShutdown (
@retval EFI_SUCCESS Returns success if platform implements a HDLCD
controller.
+ @retval EFI_NOT_FOUND HDLCD display controller not found on the
+ platform.
**/
EFI_STATUS
LcdIdentify (
VOID
)
{
- return EFI_SUCCESS;
+ if ((MmioRead32 (HDLCD_REG_VERSION) >> 16) == HDLCD_PRODUCT_ID) {
+ return EFI_SUCCESS;
+ }
+
+ return EFI_NOT_FOUND;
}
diff --git a/ArmPlatformPkg/Library/HdLcd/HdLcd.h b/ArmPlatformPkg/Library/HdLcd/HdLcd.h
index cd2c0366c7b563d7fb313f82abeef7eb1aa3ef72..1efa78eedc3013b3ab4615181a59c7d15b851ab5 100644
--- a/ArmPlatformPkg/Library/HdLcd/HdLcd.h
+++ b/ArmPlatformPkg/Library/HdLcd/HdLcd.h
@@ -85,4 +85,6 @@
// Number of bytes per pixel
#define HDLCD_4BYTES_PER_PIXEL ((4 - 1) << 3)
+#define HDLCD_PRODUCT_ID 0x1CDC
+
#endif /* HDLCD_H_ */
--
'Guid(CE165669-3EF3-493F-B85D-6190EE5B9759)'
next prev parent reply other threads:[~2018-03-20 16:05 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-20 16:11 [PATCH v3 00/16] Update GOP Girish Pathak
2018-03-20 16:11 ` [PATCH v3 01/16] ArmPlatformPkg: Rectify line endings of LcdHwNullLib Girish Pathak
2018-03-21 12:53 ` Evan Lloyd
2018-03-20 16:11 ` [PATCH v3 02/16] ArmPlatformPkg: Rectify line endings of LcdPlatformNullLib Girish Pathak
2018-03-21 12:53 ` Evan Lloyd
2018-03-20 16:11 ` [PATCH v3 03/16] ArmPlatformPkg: Tidy Lcd code: Coding standard Girish Pathak
2018-03-21 12:53 ` Evan Lloyd
2018-03-20 16:12 ` [PATCH v3 04/16] ArmPlatformPkg: Tidy Lcd code: Updated comments Girish Pathak
2018-03-21 12:53 ` Evan Lloyd
2018-03-20 16:12 ` [PATCH v3 05/16] ArmPlatformPkg: HDLCD and PL111: Update debug ASSERTS Girish Pathak
2018-03-21 12:53 ` Evan Lloyd
2018-03-20 16:12 ` [PATCH v3 06/16] ArmPlatformPkg: PL111Lcd: Replace magic number with macro Girish Pathak
2018-03-21 12:26 ` Evan Lloyd
2018-03-20 16:12 ` [PATCH v3 07/16] ArmPlatformPkg: PL111Lcd: Combine two writes to LCDControl Girish Pathak
2018-03-21 12:26 ` Evan Lloyd
2018-03-20 16:12 ` Girish Pathak [this message]
2018-03-21 12:26 ` [PATCH v3 08/16] ArmPlatformPkg: Implement LcdIdentify function for HDLCD GOP Evan Lloyd
2018-03-20 16:12 ` [PATCH v3 09/16] ArmPlatformPkg: Redefine LcdPlatformGetTimings function Girish Pathak
2018-03-21 12:53 ` Evan Lloyd
2018-03-20 16:12 ` [PATCH v3 10/16] ArmPlatformPkg: Add PCD to select pixel format Girish Pathak
2018-03-21 12:53 ` Evan Lloyd
2018-03-20 16:12 ` [PATCH v3 11/16] ArmPlatformPkg: PCD to swap red/blue format for HDLCD Girish Pathak
2018-03-21 12:53 ` Evan Lloyd
2018-03-20 16:12 ` [PATCH v3 12/16] ArmPlatformPkg: Additional display modes Girish Pathak
2018-03-21 12:54 ` Evan Lloyd
2018-03-20 16:12 ` [PATCH v3 13/16] ArmPlatformPkg: Reserving framebuffer at build Girish Pathak
2018-03-21 12:54 ` Evan Lloyd
2018-03-20 16:12 ` [PATCH v3 14/16] ArmPlatformPkg: New DP500/DP550/DP650 GOP driver Girish Pathak
2018-03-21 12:54 ` Evan Lloyd
2018-04-23 11:07 ` Leif Lindholm
2018-03-20 16:12 ` [PATCH v3 15/16] ArmPkg: MTL Library interface and Null library implementation Girish Pathak
2018-03-21 12:54 ` Evan Lloyd
2018-04-23 11:11 ` Leif Lindholm
2018-03-20 16:12 ` [PATCH v3 16/16] ArmPkg: Introduce SCMI protocol Girish Pathak
2018-03-21 12:54 ` Evan Lloyd
2018-04-23 11:31 ` Leif Lindholm
2018-04-23 16:06 ` Girish Pathak
2018-04-23 16:22 ` Leif Lindholm
2018-04-23 16:49 ` Girish Pathak
2018-04-23 17:11 ` [PATCH v3 00/16] Update GOP Leif Lindholm
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