From patchwork Thu May 9 08:08:15 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Yarlagadda X-Patchwork-Id: 1097391 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=nvidia.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=nvidia.com header.i=@nvidia.com header.b="M3lWK+Hj"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 4505bm4T6mz9sCJ for ; Thu, 9 May 2019 18:09:40 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725992AbfEIIJf (ORCPT ); Thu, 9 May 2019 04:09:35 -0400 Received: from hqemgate15.nvidia.com ([216.228.121.64]:14754 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725822AbfEIIJf (ORCPT ); Thu, 9 May 2019 04:09:35 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Thu, 09 May 2019 01:08:56 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Thu, 09 May 2019 01:09:32 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Thu, 09 May 2019 01:09:32 -0700 Received: from HQMAIL103.nvidia.com (172.20.187.11) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Thu, 9 May 2019 08:09:31 +0000 Received: from hqnvemgw01.nvidia.com (172.20.150.20) by HQMAIL103.nvidia.com (172.20.187.11) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Thu, 9 May 2019 08:09:31 +0000 Received: from kyarlagadda-linux.nvidia.com (Not Verified[10.19.64.169]) by hqnvemgw01.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Thu, 09 May 2019 01:09:31 -0700 From: Krishna Yarlagadda To: , , , , , , CC: , , , , , Krishna Yarlagadda Subject: [Patch-V2 3/4] pinctrl: tegra: Add Tegra194 pinmux driver Date: Thu, 9 May 2019 13:38:15 +0530 Message-ID: <1557389296-10257-3-git-send-email-kyarlagadda@nvidia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1557389296-10257-1-git-send-email-kyarlagadda@nvidia.com> References: <1557389296-10257-1-git-send-email-kyarlagadda@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1557389336; bh=I9ztogdgQWxlUbRsIE1w6IFbR6hAxS6MHG5OxI6z/HY=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=M3lWK+HjnFEVZ7a4vFZyLmyDGOyDjX54Y9Fh/dJNAeZOFekV4i0XqnRpTobg9CRBa sxfkxQU01GM+LNFrI4OgR/Q42VWYB0AZI5+AkuToZw664OgeLxjyxc5qbC4yir/EMV pMhSiIGehjynufJ+Ji0T8HyhQ9fKTgUR5N7NbKS2DMhHBPpbg3oCdIr4VlIPJVyes+ qziunCkiOrj2LpRKMHtCK/QrsMENR7E8FPiyXIgyGGvAjLkiMW03HQYJ+VIt1NoJNJ hgBrSQNvCh6ejKmlBzi8rw1Paagb+4LtT6PUvr74+eMd8n1a5g0duNwCY+iYgYb6VE 4tAUd6GuafJXg== Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org Tegra194 has PCIE L5 rst and clkreq pins which need to be controlled dynamically at runtime. This driver supports change pinmux for these pins. Pinmux for rest of the pins is set statically by bootloader and will not be changed by this driver Signed-off-by: Krishna Yarlagadda Signed-off-by: Suresh Mangipudi --- Changes in V2: split V1 patch into 3 patches driver change, updating header to support new driver and select pinmux drier in soc. Remove irrelevant macros. drivers/pinctrl/tegra/Kconfig | 4 + drivers/pinctrl/tegra/Makefile | 1 + drivers/pinctrl/tegra/pinctrl-tegra194.c | 168 +++++++++++++++++++++++++++++++ 3 files changed, 173 insertions(+) create mode 100644 drivers/pinctrl/tegra/pinctrl-tegra194.c diff --git a/drivers/pinctrl/tegra/Kconfig b/drivers/pinctrl/tegra/Kconfig index 24e20cc..6f79f1f 100644 --- a/drivers/pinctrl/tegra/Kconfig +++ b/drivers/pinctrl/tegra/Kconfig @@ -23,6 +23,10 @@ config PINCTRL_TEGRA210 bool select PINCTRL_TEGRA +config PINCTRL_TEGRA194 + bool + select PINCTRL_TEGRA + config PINCTRL_TEGRA_XUSB def_bool y if ARCH_TEGRA select GENERIC_PHY diff --git a/drivers/pinctrl/tegra/Makefile b/drivers/pinctrl/tegra/Makefile index bbcb043..ead4e10 100644 --- a/drivers/pinctrl/tegra/Makefile +++ b/drivers/pinctrl/tegra/Makefile @@ -5,4 +5,5 @@ obj-$(CONFIG_PINCTRL_TEGRA30) += pinctrl-tegra30.o obj-$(CONFIG_PINCTRL_TEGRA114) += pinctrl-tegra114.o obj-$(CONFIG_PINCTRL_TEGRA124) += pinctrl-tegra124.o obj-$(CONFIG_PINCTRL_TEGRA210) += pinctrl-tegra210.o +obj-$(CONFIG_PINCTRL_TEGRA194) += pinctrl-tegra194.o obj-$(CONFIG_PINCTRL_TEGRA_XUSB) += pinctrl-tegra-xusb.o diff --git a/drivers/pinctrl/tegra/pinctrl-tegra194.c b/drivers/pinctrl/tegra/pinctrl-tegra194.c new file mode 100644 index 0000000..399598a --- /dev/null +++ b/drivers/pinctrl/tegra/pinctrl-tegra194.c @@ -0,0 +1,168 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Pinctrl data for the NVIDIA Tegra194 pinmux + * + * Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + */ + +#include +#include +#include +#include +#include + +/* Define unique ID for each pins */ +enum pin_id { + TEGRA_PIN_PEX_L5_CLKREQ_N_PGG0 = 256, + TEGRA_PIN_PEX_L5_RST_N_PGG1 = 257, + TEGRA_PIN_NUM_GPIOS = 258, +}; + +/* Table for pin descriptor */ +static const struct pinctrl_pin_desc tegra194_pins[] = { + PINCTRL_PIN(TEGRA_PIN_PEX_L5_CLKREQ_N_PGG0, + "TEGRA_PIN_PEX_L5_CLKREQ_N_PGG0"), + PINCTRL_PIN(TEGRA_PIN_PEX_L5_RST_N_PGG1, + "TEGRA_PIN_PEX_L5_RST_N_PGG1"), +}; + +static const unsigned int pex_l5_clkreq_n_pgg0_pins[] = { + TEGRA_PIN_PEX_L5_CLKREQ_N_PGG0, +}; + +static const unsigned int pex_l5_rst_n_pgg1_pins[] = { + TEGRA_PIN_PEX_L5_RST_N_PGG1, +}; + +/* Define unique ID for each function */ +enum tegra_mux_dt { + TEGRA_MUX_RSVD0, + TEGRA_MUX_RSVD1, + TEGRA_MUX_RSVD2, + TEGRA_MUX_RSVD3, + TEGRA_MUX_PE5, +}; + +/* Make list of each function name */ +#define TEGRA_PIN_FUNCTION(lid) \ + { \ + .name = #lid, \ + } +static struct tegra_function tegra194_functions[] = { + TEGRA_PIN_FUNCTION(rsvd0), + TEGRA_PIN_FUNCTION(rsvd1), + TEGRA_PIN_FUNCTION(rsvd2), + TEGRA_PIN_FUNCTION(rsvd3), + TEGRA_PIN_FUNCTION(pe5), +}; + +#define DRV_PINGROUP_ENTRY_Y(r, drvdn_b, drvdn_w, drvup_b, \ + drvup_w, slwr_b, slwr_w, slwf_b, \ + slwf_w, bank) \ + .drv_reg = DRV_PINGROUP_Y(r), \ + .drv_bank = bank, \ + .drvdn_bit = drvdn_b, \ + .drvdn_width = drvdn_w, \ + .drvup_bit = drvup_b, \ + .drvup_width = drvup_w, \ + .slwr_bit = slwr_b, \ + .slwr_width = slwr_w, \ + .slwf_bit = slwf_b, \ + .slwf_width = slwf_w + +#define PIN_PINGROUP_ENTRY_Y(r, bank, pupd, e_lpbk, e_input, \ + e_od, schmitt_b, drvtype) \ + .mux_reg = ((r)), \ + .lpmd_bit = -1, \ + .lock_bit = -1, \ + .hsm_bit = -1, \ + .parked_bit = -1, \ + .mux_bank = bank, \ + .mux_bit = 0, \ + .pupd_reg = PINGROUP_REG_##pupd(r), \ + .pupd_bank = bank, \ + .pupd_bit = 2, \ + .tri_reg = ((r)), \ + .tri_bank = bank, \ + .tri_bit = 4, \ + .einput_bit = e_input, \ + .odrain_bit = e_od, \ + .schmitt_bit = schmitt_b, \ + .drvtype_bit = 13, \ + .drv_reg = -1 + +#define drive_pex_l5_clkreq_n_pgg0 \ + DRV_PINGROUP_ENTRY_Y(0x14004, 12, 5, 20, 5, -1, -1, -1, -1, 0) +#define drive_pex_l5_rst_n_pgg1 \ + DRV_PINGROUP_ENTRY_Y(0x1400c, 12, 5, 20, 5, -1, -1, -1, -1, 0) + +#define PINGROUP(pg_name, f0, f1, f2, f3, r, bank, pupd, e_lpbk, \ + e_input, e_lpdr, e_od, schmitt_b, drvtype, io_rail) \ + { \ + .name = #pg_name, \ + .pins = pg_name##_pins, \ + .npins = ARRAY_SIZE(pg_name##_pins), \ + .funcs = { \ + TEGRA_MUX_##f0, \ + TEGRA_MUX_##f1, \ + TEGRA_MUX_##f2, \ + TEGRA_MUX_##f3, \ + }, \ + PIN_PINGROUP_ENTRY_Y(r, bank, pupd, e_lpbk, \ + e_input, e_od, \ + schmitt_b, drvtype), \ + drive_##pg_name, \ + } + +static const struct tegra_pingroup tegra194_groups[] = { + PINGROUP(pex_l5_clkreq_n_pgg0, PE5, RSVD1, RSVD2, RSVD3, 0x14000, 0, + Y, -1, 6, 8, 11, 12, N, "vddio_pex_ctl_2"), + PINGROUP(pex_l5_rst_n_pgg1, PE5, RSVD1, RSVD2, RSVD3, 0x14008, 0, + Y, -1, 6, 8, 11, 12, N, "vddio_pex_ctl_2"), +}; + +static const struct tegra_pinctrl_soc_data tegra194_pinctrl = { + .ngpios = TEGRA_PIN_NUM_GPIOS, + .pins = tegra194_pins, + .npins = ARRAY_SIZE(tegra194_pins), + .functions = tegra194_functions, + .nfunctions = ARRAY_SIZE(tegra194_functions), + .groups = tegra194_groups, + .ngroups = ARRAY_SIZE(tegra194_groups), + .hsm_in_mux = true, + .schmitt_in_mux = true, + .drvtype_in_mux = true, +}; + +static int tegra194_pinctrl_probe(struct platform_device *pdev) +{ + return tegra_pinctrl_probe(pdev, &tegra194_pinctrl); +} + +static const struct of_device_id tegra194_pinctrl_of_match[] = { + { .compatible = "nvidia,tegra194-pinmux", }, + { }, +}; + +static struct platform_driver tegra194_pinctrl_driver = { + .driver = { + .name = "tegra194-pinctrl", + .of_match_table = tegra194_pinctrl_of_match, + }, + .probe = tegra194_pinctrl_probe, +}; + +static int __init tegra194_pinctrl_init(void) +{ + return platform_driver_register(&tegra194_pinctrl_driver); +} +arch_initcall(tegra194_pinctrl_init);