aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/mediatek/patches-5.10/601-PCI-mediatek-Use-regmap-to-get-shared-pcie-cfg-base.patch
blob: fea9486d306ef7e7726aafb741bbe9834a9c02fd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
From patchwork Thu May 28 06:16:46 2020
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Chuanjia Liu <chuanjia.liu@mediatek.com>
X-Patchwork-Id: 11574781
Return-Path: 
 <SRS0=ftSA=7K=lists.infradead.org=linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@kernel.org>
Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org
 [172.30.200.123])
	by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0A99B60D
	for <patchwork-linux-mediatek@patchwork.kernel.org>;
 Thu, 28 May 2020 06:19:04 +0000 (UTC)
Received: from bombadil.infradead.org (bombadil.infradead.org
 [198.137.202.133])
	(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
	(No client certificate requested)
	by mail.kernel.org (Postfix) with ESMTPS id DCC99208FE
	for <patchwork-linux-mediatek@patchwork.kernel.org>;
 Thu, 28 May 2020 06:19:03 +0000 (UTC)
Authentication-Results: mail.kernel.org;
	dkim=pass (2048-bit key) header.d=lists.infradead.org
 header.i=@lists.infradead.org header.b="SpOi0ueF";
	dkim=fail reason="signature verification failed" (1024-bit key)
 header.d=mediatek.com header.i=@mediatek.com header.b="UGIBoIEG"
DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DCC99208FE
Authentication-Results: mail.kernel.org;
 dmarc=fail (p=none dis=none) header.from=mediatek.com
Authentication-Results: mail.kernel.org;
 spf=none
 smtp.mailfrom=linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
	d=lists.infradead.org; s=bombadil.20170209; h=Sender:
	Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post:
	List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:
	Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description:
	Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:
	List-Owner; bh=LIr5poLUT/UdH6/akh/pnICGGa3rUBkN+4FhE1DyOrU=; b=SpOi0ueFcoJ/ka
	4esa6cDd5oU4fp0z684ZVPaVvvhm/azSZBBMYinHaAW6EvzKcMNYIX9grP8eg/728lEPNTKVq0I8H
	PQZ9KvD4uTu8Opo1hD8LsRSLr+YLpNKt3KPOY/4gpwQ97uU9rI5PwkuAxPBgR949Vh5EiG0Vaww1H
	Ep+I5BFRn2LVVQZP1Z7U0A0VUcOTLJ4znoWRLEXxtM9/Wd4hwQsrEPQszeDFti/RbwGfJ5efOb5UL
	fhwBzSxELEzAAgH7env/XD2sSSpVf2Qsn6WO8D3ZepMtWrRtARiaRKSNxSBQTg2SSHcjmBSJSzcX+
	w8wqWaUMs0crlBuZWS1g==;
Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org)
	by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux))
	id 1jeBsc-0001tI-88; Thu, 28 May 2020 06:19:02 +0000
Received: from mailgw01.mediatek.com ([216.200.240.184])
 by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux))
 id 1jeBsZ-0001rp-6g; Thu, 28 May 2020 06:19:01 +0000
X-UUID: beeaf5765357439c91eab1f67ca7ef43-20200527
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
 d=mediatek.com;
 s=dk;
 h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From;
 bh=+IjWjsF/DhknqZB+lLSZ50cyvxDap+8w4tvqhp8Dv68=;
 b=UGIBoIEGJUuq5pEvYEad1HVGpiv6yma+94hva83D2gD8lYmihRWkpJxB2yn+dVtNm7ZXXoQBf+jvvULOmslJgs1HZTLJTnjpdvLmQqo42OXRXSVpTE49HdRkJZDAIWIAReBfOEkFgNxcIX3uedrtnww/NLJ2lagrYPG5ET4lI2E=;
X-UUID: beeaf5765357439c91eab1f67ca7ef43-20200527
Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw01.mediatek.com
 (envelope-from <chuanjia.liu@mediatek.com>)
 (musrelay.mediatek.com ESMTP with TLS)
 with ESMTP id 603406343; Wed, 27 May 2020 22:19:17 -0800
Received: from mtkmbs07n1.mediatek.inc (172.21.101.16) by
 MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id
 15.0.1497.2; Wed, 27 May 2020 23:18:47 -0700
Received: from mtkcas07.mediatek.inc (172.21.101.84) by
 mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id
 15.0.1497.2; Thu, 28 May 2020 14:18:51 +0800
Received: from localhost.localdomain (10.17.3.153) by mtkcas07.mediatek.inc
 (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend
 Transport; Thu, 28 May 2020 14:18:49 +0800
From: <chuanjia.liu@mediatek.com>
To: <robh+dt@kernel.org>, <ryder.lee@mediatek.com>, <matthias.bgg@gmail.com>
Subject: [PATCH v2 2/4] PCI: mediatek: Use regmap to get shared pcie-cfg base
Date: Thu, 28 May 2020 14:16:46 +0800
Message-ID: <20200528061648.32078-3-chuanjia.liu@mediatek.com>
X-Mailer: git-send-email 2.18.0
In-Reply-To: <20200528061648.32078-1-chuanjia.liu@mediatek.com>
References: <20200528061648.32078-1-chuanjia.liu@mediatek.com>
MIME-Version: 1.0
X-MTK: N
X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 
X-CRM114-CacheID: sfid-20200527_231859_251275_BED2B1E2 
X-CRM114-Status: GOOD (  11.62  )
X-Spam-Score: -0.2 (/)
X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary:
 Content analysis details:   (-0.2 points)
 pts rule name              description
 ---- ----------------------
 --------------------------------------------------
 -0.0 SPF_PASS               SPF: sender matches SPF record
 0.0 SPF_HELO_NONE          SPF: HELO does not publish an SPF Record
 0.0 MIME_BASE64_TEXT       RAW: Message text disguised using base64
 encoding
 -0.1 DKIM_VALID_AU          Message has a valid DKIM or DK signature from
 author's domain
 0.1 DKIM_SIGNED            Message has a DKIM or DK signature,
 not necessarily
 valid
 -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature
 -0.1 DKIM_VALID_EF          Message has a valid DKIM or DK signature from
 envelope-from domain
 0.0 UNPARSEABLE_RELAY      Informational: message has unparseable relay
 lines
X-BeenThere: linux-mediatek@lists.infradead.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: <linux-mediatek.lists.infradead.org>
List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-mediatek>,
 <mailto:linux-mediatek-request@lists.infradead.org?subject=unsubscribe>
List-Archive: <http://lists.infradead.org/pipermail/linux-mediatek/>
List-Post: <mailto:linux-mediatek@lists.infradead.org>
List-Help: <mailto:linux-mediatek-request@lists.infradead.org?subject=help>
List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-mediatek>,
 <mailto:linux-mediatek-request@lists.infradead.org?subject=subscribe>
Cc: devicetree@vger.kernel.org, lorenzo.pieralisi@arm.com,
 srv_heupstream@mediatek.com, "chuanjia.liu" <Chuanjia.Liu@mediatek.com>,
 linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
 jianjun.wang@mediatek.com, linux-mediatek@lists.infradead.org,
 yong.wu@mediatek.com, bhelgaas@google.com,
 linux-arm-kernel@lists.infradead.org, amurray@thegoodpenguin.co.uk
Sender: "Linux-mediatek" <linux-mediatek-bounces@lists.infradead.org>
Errors-To: 
 linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org

From: "chuanjia.liu" <Chuanjia.Liu@mediatek.com>

Use regmap to get shared pcie-cfg base and change
the method to get pcie irq.

Signed-off-by: chuanjia.liu <Chuanjia.Liu@mediatek.com>
---
 drivers/pci/controller/pcie-mediatek.c | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

--- a/drivers/pci/controller/pcie-mediatek.c
+++ b/drivers/pci/controller/pcie-mediatek.c
@@ -14,6 +14,7 @@
 #include <linux/irqchip/chained_irq.h>
 #include <linux/irqdomain.h>
 #include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
 #include <linux/msi.h>
 #include <linux/module.h>
 #include <linux/of_address.h>
@@ -23,6 +24,7 @@
 #include <linux/phy/phy.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
+#include <linux/regmap.h>
 #include <linux/reset.h>
 
 #include "../pci.h"
@@ -207,6 +209,7 @@ struct mtk_pcie_port {
  * struct mtk_pcie - PCIe host information
  * @dev: pointer to PCIe device
  * @base: IO mapped register base
+ * @cfg: IO mapped register map for PCIe config
  * @free_ck: free-run reference clock
  * @mem: non-prefetchable memory resource
  * @ports: pointer to PCIe port information
@@ -215,6 +218,7 @@ struct mtk_pcie_port {
 struct mtk_pcie {
 	struct device *dev;
 	void __iomem *base;
+	struct regmap *cfg;
 	struct clk *free_ck;
 
 	struct list_head ports;
@@ -650,7 +654,7 @@ static int mtk_pcie_setup_irq(struct mtk
 		return err;
 	}
 
-	port->irq = platform_get_irq(pdev, port->slot);
+	port->irq = platform_get_irq_byname(pdev, "pcie_irq");
 	if (port->irq < 0)
 		return port->irq;
 
@@ -676,12 +680,11 @@ static int mtk_pcie_startup_port_v2(stru
 	if (!mem)
 		return -EINVAL;
 
-	/* MT7622 platforms need to enable LTSSM and ASPM from PCIe subsys */
-	if (pcie->base) {
-		val = readl(pcie->base + PCIE_SYS_CFG_V2);
-		val |= PCIE_CSR_LTSSM_EN(port->slot) |
-		       PCIE_CSR_ASPM_L1_EN(port->slot);
-		writel(val, pcie->base + PCIE_SYS_CFG_V2);
+	/* MT7622/MT7629 platforms need to enable LTSSM and ASPM. */
+	if (pcie->cfg) {
+		val = PCIE_CSR_LTSSM_EN(port->slot) |
+		      PCIE_CSR_ASPM_L1_EN(port->slot);
+		regmap_update_bits(pcie->cfg, PCIE_SYS_CFG_V2, val, val);
 	}
 
 	/* Assert all reset signals */
@@ -985,6 +988,7 @@ static int mtk_pcie_subsys_powerup(struc
 	struct device *dev = pcie->dev;
 	struct platform_device *pdev = to_platform_device(dev);
 	struct resource *regs;
+	struct device_node *cfg_node;
 	int err;
 
 	/* get shared registers, which are optional */
@@ -997,6 +1001,13 @@ static int mtk_pcie_subsys_powerup(struc
 		}
 	}
 
+	cfg_node = of_parse_phandle(dev->of_node, "mediatek,pcie-cfg", 0);
+	if (cfg_node) {
+		pcie->cfg = syscon_node_to_regmap(cfg_node);
+		if (IS_ERR(pcie->cfg))
+			return PTR_ERR(pcie->cfg);
+	}
+
 	pcie->free_ck = devm_clk_get(dev, "free_ck");
 	if (IS_ERR(pcie->free_ck)) {
 		if (PTR_ERR(pcie->free_ck) == -EPROBE_DEFER)