From patchwork Sat Sep 17 20:27:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 607132 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5AD81ECAAA1 for ; Sat, 17 Sep 2022 20:27:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229540AbiIQU1i (ORCPT ); Sat, 17 Sep 2022 16:27:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50290 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229514AbiIQU1e (ORCPT ); Sat, 17 Sep 2022 16:27:34 -0400 Received: from fudo.makrotopia.org (fudo.makrotopia.org [IPv6:2a07:2ec0:3002::71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DA8902ED7F for ; Sat, 17 Sep 2022 13:27:33 -0700 (PDT) Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1oZePU-0003o6-0U; Sat, 17 Sep 2022 22:27:32 +0200 Date: Sat, 17 Sep 2022 21:27:26 +0100 From: Daniel Golle To: linux-wireless@vger.kernel.org, Stanislaw Gruszka , Helmut Schaa Cc: Kalle Valo , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Johannes Berg Subject: [PATCH v3 05/16] rt2x00: add RF self TXDC calibration for MT7620 Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Tomislav Požega Add TX self calibration based on mtk driver. Signed-off-by: Tomislav Požega Signed-off-by: Daniel Golle Acked-by: Stanislaw Gruszka --- v2: use ++i instead of i = i + 1 in loops .../net/wireless/ralink/rt2x00/rt2800lib.c | 48 +++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c index cf5463cb7b642b..ed2c6105899b8d 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c @@ -8428,6 +8428,53 @@ static void rt2800_init_rfcsr_5592(struct rt2x00_dev *rt2x00dev) rt2800_led_open_drain_enable(rt2x00dev); } +static void rt2800_rf_self_txdc_cal(struct rt2x00_dev *rt2x00dev) +{ + u8 rfb5r1_org, rfb7r1_org, rfvalue; + u32 mac0518, mac051c, mac0528, mac052c; + u8 i; + + mac0518 = rt2800_register_read(rt2x00dev, RF_CONTROL0); + mac051c = rt2800_register_read(rt2x00dev, RF_BYPASS0); + mac0528 = rt2800_register_read(rt2x00dev, RF_CONTROL2); + mac052c = rt2800_register_read(rt2x00dev, RF_BYPASS2); + + rt2800_register_write(rt2x00dev, RF_BYPASS0, 0x0); + rt2800_register_write(rt2x00dev, RF_BYPASS2, 0x0); + + rt2800_register_write(rt2x00dev, RF_CONTROL0, 0xC); + rt2800_register_write(rt2x00dev, RF_BYPASS0, 0x3306); + rt2800_register_write(rt2x00dev, RF_CONTROL2, 0x3330); + rt2800_register_write(rt2x00dev, RF_BYPASS2, 0xfffff); + rfb5r1_org = rt2800_rfcsr_read_bank(rt2x00dev, 5, 1); + rfb7r1_org = rt2800_rfcsr_read_bank(rt2x00dev, 7, 1); + + rt2800_rfcsr_write_bank(rt2x00dev, 5, 1, 0x4); + for (i = 0; i < 100; ++i) { + usleep_range(50, 100); + rfvalue = rt2800_rfcsr_read_bank(rt2x00dev, 5, 1); + if ((rfvalue & 0x04) != 0x4) + break; + } + rt2800_rfcsr_write_bank(rt2x00dev, 5, 1, rfb5r1_org); + + rt2800_rfcsr_write_bank(rt2x00dev, 7, 1, 0x4); + for (i = 0; i < 100; ++i) { + usleep_range(50, 100); + rfvalue = rt2800_rfcsr_read_bank(rt2x00dev, 7, 1); + if ((rfvalue & 0x04) != 0x4) + break; + } + rt2800_rfcsr_write_bank(rt2x00dev, 7, 1, rfb7r1_org); + + rt2800_register_write(rt2x00dev, RF_BYPASS0, 0x0); + rt2800_register_write(rt2x00dev, RF_BYPASS2, 0x0); + rt2800_register_write(rt2x00dev, RF_CONTROL0, mac0518); + rt2800_register_write(rt2x00dev, RF_BYPASS0, mac051c); + rt2800_register_write(rt2x00dev, RF_CONTROL2, mac0528); + rt2800_register_write(rt2x00dev, RF_BYPASS2, mac052c); +} + static void rt2800_bbp_core_soft_reset(struct rt2x00_dev *rt2x00dev, bool set_bw, bool is_ht40) { @@ -9035,6 +9082,7 @@ static void rt2800_init_rfcsr_6352(struct rt2x00_dev *rt2x00dev) rt2800_rfcsr_write_dccal(rt2x00dev, 5, 0x00); rt2800_rfcsr_write_dccal(rt2x00dev, 17, 0x7C); + rt2800_rf_self_txdc_cal(rt2x00dev); rt2800_bw_filter_calibration(rt2x00dev, true); rt2800_bw_filter_calibration(rt2x00dev, false); }