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SN1PR07MB2175; 20:6zniNDLsAFnxP8tw7ILqRJKFUjzFD0iIMvR7KY6V0EADmC3y2whQ6jI5MmWF4vMbuRUAegsbi1jSwo8AnQvafkhlFrngK7gzPxM12qcud1mBJuVq6wqO+4yYXlZgvtl3CEFqukDit8hjSO+v8X1MkNcUgK/d1IoyJlmCVCCXVwAdtrf7HOhTwoCgkLn+AkS52sAMGfVvHQJIV3UxXcdZEZqvp1jdQhpAd9KOd0AvPQBgfa944QAik+L2khkdxJ2w X-OriginatorOrg: cadence.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Sep 2018 14:56:00.1129 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ef6fa32b-1563-4c31-7225-08d61f092e07 X-MS-Exchange-CrossTenant-Id: d36035c5-6ce6-4662-a3dc-e762e61ae4c9 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=d36035c5-6ce6-4662-a3dc-e762e61ae4c9; Ip=[158.140.1.28]; Helo=[sjmaillnx1.cadence.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN1PR07MB2175 X-Proofpoint-SPF-Result: pass X-Proofpoint-SPF-Record: v=spf1 a:mx-sanjose2.Cadence.COM a:mx-sanjose4.Cadence.COM a:mx-sanjose5.Cadence.COM include:mktomail.com include:spf-0014ca01.pphosted.com include:spf.protection.outlook.com include:auth.msgapp.com include:spf.mandrillapp.com ~all X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2018-09-20_09:, , signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=874 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1809200148 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Quentin Schulz dp_get_lane_status is pretty generic and can be used for other means, so let's make it "public". This adds drm_dp_get_lane_status to the header file and add the appropriate EXPORT_SYMBOL for it so that it can be used by other drivers, be they compiled built-in or as modules. Signed-off-by: Quentin Schulz Signed-off-by: Damian Kos --- drivers/gpu/drm/drm_dp_helper.c | 9 +++++---- include/drm/drm_dp_helper.h | 2 ++ 2 files changed, 7 insertions(+), 4 deletions(-) -- 2.17.1 diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index 735ebde5c2f0..169db52f92f5 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -48,14 +48,15 @@ static u8 dp_link_status(const u8 link_status[DP_LINK_STATUS_SIZE], int r) return link_status[r - DP_LANE0_1_STATUS]; } -static u8 dp_get_lane_status(const u8 link_status[DP_LINK_STATUS_SIZE], - int lane) +u8 drm_dp_get_lane_status(const u8 link_status[DP_LINK_STATUS_SIZE], + int lane) { int i = DP_LANE0_1_STATUS + (lane >> 1); int s = (lane & 1) * 4; u8 l = dp_link_status(link_status, i); return (l >> s) & 0xf; } +EXPORT_SYMBOL(drm_dp_get_lane_status); bool drm_dp_channel_eq_ok(const u8 link_status[DP_LINK_STATUS_SIZE], int lane_count) @@ -69,7 +70,7 @@ bool drm_dp_channel_eq_ok(const u8 link_status[DP_LINK_STATUS_SIZE], if ((lane_align & DP_INTERLANE_ALIGN_DONE) == 0) return false; for (lane = 0; lane < lane_count; lane++) { - lane_status = dp_get_lane_status(link_status, lane); + lane_status = drm_dp_get_lane_status(link_status, lane); if ((lane_status & DP_CHANNEL_EQ_BITS) != DP_CHANNEL_EQ_BITS) return false; } @@ -84,7 +85,7 @@ bool drm_dp_clock_recovery_ok(const u8 link_status[DP_LINK_STATUS_SIZE], u8 lane_status; for (lane = 0; lane < lane_count; lane++) { - lane_status = dp_get_lane_status(link_status, lane); + lane_status = drm_dp_get_lane_status(link_status, lane); if ((lane_status & DP_LANE_CR_DONE) == 0) return false; } diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 698082a02b97..973d2fda9654 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -952,6 +952,8 @@ #define DP_MST_LOGICAL_PORT_0 8 #define DP_LINK_STATUS_SIZE 6 + +u8 drm_dp_get_lane_status(const u8 link_status[DP_LINK_STATUS_SIZE], int lane); bool drm_dp_channel_eq_ok(const u8 link_status[DP_LINK_STATUS_SIZE], int lane_count); bool drm_dp_clock_recovery_ok(const u8 link_status[DP_LINK_STATUS_SIZE],