From nobody Sun Feb 8 14:05:25 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B0F5422D780; Wed, 4 Jun 2025 07:40:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749022853; cv=none; b=HatBeB+MW4TBlVKwS0U+sN0+g8ST/lxcRhX180+elwdq9lxf/nYz5wpdCekt2O726VHxRFVUGCE1bN83xt2GDr4iFfH6PxrONkHXVQeD9zYwavMQI/TeaDecbySbsmwNDRSNHGxJC63qW87ky6TaUaCnH4vRSTYtwzn6ZDLA1Ik= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749022853; c=relaxed/simple; bh=rnNGz1GGn6PYOQnsZwE6bvO/8t20BGjGItt9vuXTLJM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=ubRWPw0tKY1T+NP3PlyoA7aVV4XHm2XuguR4BNr/yMabDwPO2ep1xObzHe5JAuvm0EQiO/pIi4cnYK6hRBAwA5b60nHwA+xb03WmyROjo0/5PdxXI2SfFeJ3Dl6O+DykkQQCoP9hQ4n6Iskx2t4VQ5p+n+JrNS/+mvEWEmlR4Zs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ig2odtzX; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ig2odtzX" Received: by smtp.kernel.org (Postfix) with ESMTPS id 4E44CC4CEE7; Wed, 4 Jun 2025 07:40:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1749022853; bh=rnNGz1GGn6PYOQnsZwE6bvO/8t20BGjGItt9vuXTLJM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=ig2odtzXCY68fEB55GXo4JCps7EuIcpr0zGMJODQ1oLZDoceL/WnwT6SqcmjNKl5o PpcLlk28ZPhDty+DGlwwNVNld+UPHAfV6UeFrgSPePmHmGMI8GzY9xjyzdiGtT+PnU Y301QvXrhoB/MVs5xCj0Da3ljI75A5pXJf/rd+zLpmVQtZKdjgrBqahsnOMZ0OiiN3 rnrydIGE2/spo5xyQGUULFkSyQ4RN1KJUgskGIDh5/8frGnJ0nJ9No+Xr734+AhMi4 REpFu0N6mtS2Lfq3Izo2UzxG4ub5g1ZFaMUQ63IzdYsIohm4aNVXZu22MEddaE67yN RktlEK68GEl9w== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3C69DC5B555; Wed, 4 Jun 2025 07:40:53 +0000 (UTC) From: Xianwei Zhao via B4 Relay Date: Wed, 04 Jun 2025 15:40:51 +0800 Subject: [PATCH 1/3] dt-bindings: spi: Add binding document of Amlogic SPISG controller Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250604-spisg-v1-1-5893dbe9d953@amlogic.com> References: <20250604-spisg-v1-0-5893dbe9d953@amlogic.com> In-Reply-To: <20250604-spisg-v1-0-5893dbe9d953@amlogic.com> To: Sunny Luo , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-amlogic@lists.infradead.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Xianwei Zhao X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=ed25519-sha256; t=1749022851; l=1826; i=xianwei.zhao@amlogic.com; s=20231208; h=from:subject:message-id; bh=JpIA8EXgX4qGdcEsZY4R8K9pmoEKnmQU577yskBQ4WM=; b=WU0+PjqZQ/YG3zcsD8IQTOQXyB0iue0WTGEdFfz/pwvDZorVTn0IbaEYldYwpEZemlC5h/eNM FKk2xjt93mJBvihUKpic4zerxQ1YFa9LjXaqt/T1TFF4OxnjcAQBvKI X-Developer-Key: i=xianwei.zhao@amlogic.com; a=ed25519; pk=o4fDH8ZXL6xQg5h17eNzRljf6pwZHWWjqcOSsj3dW24= X-Endpoint-Received: by B4 Relay for xianwei.zhao@amlogic.com/20231208 with auth_id=107 X-Original-From: Xianwei Zhao Reply-To: xianwei.zhao@amlogic.com From: Sunny Luo The SPISG is a new communication oriented SPI controller of Amlogic, which supports PIO, block DMA and scatter-gather DMA three operation modes. Signed-off-by: Sunny Luo Signed-off-by: Xianwei Zhao --- .../devicetree/bindings/spi/amlogic,a4-spisg.yaml | 55 ++++++++++++++++++= ++++ 1 file changed, 55 insertions(+) diff --git a/Documentation/devicetree/bindings/spi/amlogic,a4-spisg.yaml b/= Documentation/devicetree/bindings/spi/amlogic,a4-spisg.yaml new file mode 100644 index 000000000000..8d4d4606ff48 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/amlogic,a4-spisg.yaml @@ -0,0 +1,55 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (C) 2025 Amlogic, Inc. All rights reserved +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/spi/amlogic,a4-spisg.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Amlogic SPI Scatter-Gather Controller + +maintainers: + - Xianwei Zhao + - Sunny Luo + +allOf: + - $ref: spi-controller.yaml# + +properties: + compatible: + const: amlogic,a4-spisg + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + minItems: 2 + + clock-names: + items: + - const: core + - const: pclk + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + +unevaluatedProperties: false + +examples: + - | + spi@50000 { + compatible =3D "amlogic,a4-spisg"; + reg =3D <0x50000 0x38>; + interrupts =3D <0 183 4>; + clocks =3D <&clkc 37>, + <&clkc 93>; + clock-names =3D "core", "pclk"; + #address-cells =3D <1>; + #size-cells =3D <0>; + }; --=20 2.37.1 From nobody Sun Feb 8 14:05:25 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B0E9622A819; Wed, 4 Jun 2025 07:40:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749022853; cv=none; b=eY68Cs8sOsCBGLCIzu5XkVQS26bhO0k/sav96IWVIJ7bzvSDbOmQbKH2QjskpuUtcBDEjPn/ydMlwOEkFXl6+qyll/jRys+XYjvnLwes8cmW02PKbxU5qijYX7oSOK3LtYKhKs2VXi7iRg6QqqAZKRbjqhScTme1obNcK8X4WdA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749022853; c=relaxed/simple; bh=MuVCqSJ6cIJpPq7eTEZGCBk38nNP/KePPxTSi2mg978=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=naQYo1Q+McHQQ55B+tMvQAEsXhRAzKKj+x952QEeJ/8whbp2WKFXM9p1yugDOBOfxGKT6YVCdncPq4DDDEBvJNkqy8thCjOPQIdWXGVfCS+xAZTcYVf6WFmnRvXq0/hYevGxIoqQzodHvFo89VknbEH3J7bc8T+Gb2QYrKyB/BY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MpR6REq9; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="MpR6REq9" Received: by smtp.kernel.org (Postfix) with ESMTPS id 57718C4CEF3; Wed, 4 Jun 2025 07:40:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1749022853; bh=MuVCqSJ6cIJpPq7eTEZGCBk38nNP/KePPxTSi2mg978=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=MpR6REq9Si5XKE8wlPEvEE7P9Cbj/8B2K+NYrVC1oPA/+WTdGjjHsPLsPhzydd3y9 7x+VGElyWbYUZ0XZB6bKMmFvXu54feURuL//Tq2hS6MzAW4y1snpsDUzpAMFvKEvhl vYBWnRQ70WLsxYOTAoHbjtQaZLb7UZzIs69zUapsIvGabIvMOykaEQqQHxvHna/SJ2 nN0baxAn22JiUrr3nQG8xyIh8WTxImqgw5nwzcTHgvuvqoTtSO9ddPJGvBedfBfYPo tETTOTHDPQpIDfJyx9e/mIWdK5kILFxKY4IvpPsj9CAJjyuQEBYEycwu2Wy31Zuvc4 W3mCYUXmiVS1g== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4C64BC5B543; Wed, 4 Jun 2025 07:40:53 +0000 (UTC) From: Xianwei Zhao via B4 Relay Date: Wed, 04 Jun 2025 15:40:52 +0800 Subject: [PATCH 2/3] spi: Add Amlogic SPISG driver Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250604-spisg-v1-2-5893dbe9d953@amlogic.com> References: <20250604-spisg-v1-0-5893dbe9d953@amlogic.com> In-Reply-To: <20250604-spisg-v1-0-5893dbe9d953@amlogic.com> To: Sunny Luo , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-amlogic@lists.infradead.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Xianwei Zhao X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=ed25519-sha256; t=1749022851; l=28280; i=xianwei.zhao@amlogic.com; s=20231208; h=from:subject:message-id; bh=0ipoxF76XG5ZoQ5K6E2tjxwPv7lCCVEQVLjFb55IFBg=; b=dp59dodcmPqaOwp62ze5+ykOFZsMuKrTIK2QtoVSQaXk4kn7dDTcrbOx9dYsi0JtT6KXkc6L8 Jr5BRNlGWSEDIgEkI59SpVBxNHYP0N72yG4unQNUnhTctTuLBmY49xM X-Developer-Key: i=xianwei.zhao@amlogic.com; a=ed25519; pk=o4fDH8ZXL6xQg5h17eNzRljf6pwZHWWjqcOSsj3dW24= X-Endpoint-Received: by B4 Relay for xianwei.zhao@amlogic.com/20231208 with auth_id=107 X-Original-From: Xianwei Zhao Reply-To: xianwei.zhao@amlogic.com From: Sunny Luo Introduced support for the new SPI IP (SPISG) driver. The SPISG is a communication-oriented SPI controller from Amlogic,supporting three operation modes: PIO, block DMA, and scatter-gather DMA. Signed-off-by: Sunny Luo Signed-off-by: Xianwei Zhao --- drivers/spi/Kconfig | 9 + drivers/spi/Makefile | 1 + drivers/spi/spi-amlogic-spisg.c | 944 ++++++++++++++++++++++++++++++++++++= ++++ 3 files changed, 954 insertions(+) diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index c51da3fc3604..e11341df2ecf 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -99,6 +99,15 @@ config SPI_AMLOGIC_SPIFC_A1 This enables master mode support for the SPIFC (SPI flash controller) available in Amlogic A1 (A113L SoC). =20 +config SPI_AMLOGIC_SPISG + tristate "Amlogic SPISG controller" + depends on COMMON_CLK + depends on ARCH_MESON || COMPILE_TEST + help + This enables master mode support for the SPISG (SPI scatter-gather + communication controller), which is available on platforms such as + Amlogic A4 SoCs. + config SPI_APPLE tristate "Apple SoC SPI Controller platform driver" depends on ARCH_APPLE || COMPILE_TEST diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile index 4ea89f6fc531..b74e3104d71f 100644 --- a/drivers/spi/Makefile +++ b/drivers/spi/Makefile @@ -20,6 +20,7 @@ obj-$(CONFIG_SPI_ALTERA) +=3D spi-altera-platform.o obj-$(CONFIG_SPI_ALTERA_CORE) +=3D spi-altera-core.o obj-$(CONFIG_SPI_ALTERA_DFL) +=3D spi-altera-dfl.o obj-$(CONFIG_SPI_AMLOGIC_SPIFC_A1) +=3D spi-amlogic-spifc-a1.o +obj-$(CONFIG_SPI_AMLOGIC_SPISG) +=3D spi-amlogic-spisg.o obj-$(CONFIG_SPI_APPLE) +=3D spi-apple.o obj-$(CONFIG_SPI_AR934X) +=3D spi-ar934x.o obj-$(CONFIG_SPI_ARMADA_3700) +=3D spi-armada-3700.o diff --git a/drivers/spi/spi-amlogic-spisg.c b/drivers/spi/spi-amlogic-spis= g.c new file mode 100644 index 000000000000..e86c473e38dd --- /dev/null +++ b/drivers/spi/spi-amlogic-spisg.c @@ -0,0 +1,944 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Driver for Amlogic SPI communication Scatter-Gather Controller + * + * Copyright (C) 2025 Amlogic, Inc. All rights reserved + * + * Author: Sunny Luo + * Author: Xianwei Zhao + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Register Map */ +#define SPICC_REG_CFG_READY 0x00 +#define SPICC_REG_CFG_SPI 0x04 +#define HW_POS BIT(6) +#define HW_NEG BIT(7) +#define SPICC_REG_CFG_START 0x08 +#define SPICC_REG_CFG_BUS 0x0C +#define SPICC_REG_PIO_TX_DATA_L 0x10 +#define SPICC_REG_PIO_TX_DATA_H 0x14 +#define SPICC_REG_PIO_RX_DATA_L 0x18 +#define SPICC_REG_PIO_RX_DATA_H 0x1C +#define SPICC_REG_MEM_TX_ADDR_L 0x10 +#define SPICC_REG_MEM_TX_ADDR_H 0x14 +#define SPICC_REG_MEM_RX_ADDR_L 0x18 +#define SPICC_REG_MEM_RX_ADDR_H 0x1C +#define SPICC_REG_DESC_LIST_L 0x20 +#define SPICC_REG_DESC_LIST_H 0x24 +#define SPICC_DESC_PENDING BIT(31) +#define SPICC_REG_DESC_CURRENT_L 0x28 +#define SPICC_REG_DESC_CURRENT_H 0x2c +#define SPICC_REG_IRQ_STS 0x30 +#define SPICC_REG_IRQ_ENABLE 0x34 +#define SPICC_RCH_DESC_EOC BIT(0) +#define SPICC_RCH_DESC_INVALID BIT(1) +#define SPICC_RCH_DESC_RESP BIT(2) +#define SPICC_RCH_DATA_RESP BIT(3) +#define SPICC_WCH_DESC_EOC BIT(4) +#define SPICC_WCH_DESC_INVALID BIT(5) +#define SPICC_WCH_DESC_RESP BIT(6) +#define SPICC_WCH_DATA_RESP BIT(7) +#define SPICC_DESC_ERR BIT(8) +#define SPICC_SPI_READY BIT(9) +#define SPICC_DESC_DONE BIT(10) +#define SPICC_DESC_CHAIN_DONE BIT(11) + +#define SPICC_BLOCK_MAX 0x100000 + +#define SPICC_OP_MODE_WRITE_CMD 0 +#define SPICC_OP_MODE_READ_STS 1 +#define SPICC_OP_MODE_WRITE 2 +#define SPICC_OP_MODE_READ 3 + +#define SPICC_DATA_MODE_NONE 0 +#define SPICC_DATA_MODE_PIO 1 +#define SPICC_DATA_MODE_MEM 2 +#define SPICC_DATA_MODE_SG 3 + +#define SPICC_CLK_DIV_SHIFT 0 +#define SPICC_CLK_DIV_WIDTH 8 +#define SPICC_CLK_DIV_MASK GENMASK(7, 0) +#define SPICC_CLK_DIV_MAX 256 +/* recommended by specification */ +#define SPICC_CLK_DIV_MIN 4 + +#define SPICC_PCLK_RATE_MIN 24000000 + +#define SPICC_SINGLE_SPI 0 +#define SPICC_DUAL_SPI 1 +#define SPICC_QUAD_SPI 2 + +union spicc_cfg_spi { + u32 d32; + struct { + u32 bus64_en:1; + u32 slave_en:1; + u32 ss:2; + u32 flash_wp_pin_en:1; + u32 flash_hold_pin_en:1; + u32 hw_pos:1; /* start on vsync rising */ + u32 hw_neg:1; /* start on vsync falling */ + u32 rsv:24; + } b; +}; + +union spicc_cfg_start { + u32 d32; + struct { + u32 block_num:20; + u32 block_size:3; + u32 dc_level:1; + u32 op_mode:2; + u32 rx_data_mode:2; + u32 tx_data_mode:2; + u32 eoc:1; + u32 pending:1; + } b; +}; + +union spicc_cfg_bus { + u32 d32; + struct { + u32 clk_div:8; + u32 rx_tuning_in_pclk:4; /* signed */ + u32 tx_tuning_in_pclk:4; /* signed */ + u32 cs_setup_in_sclk:4; + u32 lane:2; + u32 half_duplex_en:1; + u32 little_endian_en:1; + u32 dc_mode:1; + u32 null_ctl:1; + u32 dummy_ctl:1; + u32 read_turn_around:2; + u32 keep_ss:1; + u32 cpha:1; + u32 cpol:1; + } b; +}; + +struct spicc_sg_link { + u32 valid:1; + u32 eoc:1; + u32 irq:1; + u32 act:3; + u32 ring:1; + u32 rsv:1; + u32 len:24; + u32 addr; +}; + +struct spicc_descriptor { + union spicc_cfg_start cfg_start; + union spicc_cfg_bus cfg_bus; + u64 tx_paddr; + u64 rx_paddr; +}; + +struct spicc_descriptor_extra { + struct spicc_sg_link *tx_ccsg; + struct spicc_sg_link *rx_ccsg; + int tx_ccsg_len; + int rx_ccsg_len; +}; + +struct spicc_device { + struct spi_controller *controller; + struct platform_device *pdev; + void __iomem *base; + struct clk *core; + struct clk *pclk; + struct clk *sclk; + struct completion completion; + u32 status; + u32 speed_hz; + u32 effective_speed_hz; + u32 bytes_per_word; + union spicc_cfg_spi cfg_spi; + union spicc_cfg_start cfg_start; + union spicc_cfg_bus cfg_bus; +}; + +#define spicc_writel(_spicc, _val, _offset) \ + writel(_val, (_spicc)->base + (_offset)) +#define spicc_readl(_spicc, _offset) \ + readl((_spicc)->base + (_offset)) + +static int spi_delay_to_sclk(u32 slck_speed_hz, struct spi_delay *delay) +{ + u32 ns; + + if (!delay) + return 0; + + if (delay->unit =3D=3D SPI_DELAY_UNIT_SCK) + return delay->value; + + ns =3D spi_delay_to_ns(delay, NULL); + if (ns < 0) + return 0; + + return DIV_ROUND_UP_ULL(slck_speed_hz * ns, NSEC_PER_SEC); +} + +static inline int aml_spicc_sem_down_read(struct spicc_device *spicc) +{ + int ret; + + ret =3D spicc_readl(spicc, SPICC_REG_CFG_READY); + if (ret) + spicc_writel(spicc, 0, SPICC_REG_CFG_READY); + + return ret; +} + +static inline void aml_spicc_sem_up_write(struct spicc_device *spicc) +{ + spicc_writel(spicc, 1, SPICC_REG_CFG_READY); +} + +static int aml_spicc_set_speed(struct spicc_device *spicc, uint speed_hz) +{ + u32 div; + + if (!speed_hz || speed_hz =3D=3D spicc->speed_hz) + return 0; + + spicc->speed_hz =3D speed_hz; + clk_set_rate(spicc->sclk, speed_hz); + /* Store the div for the descriptor mode */ + div =3D FIELD_GET(SPICC_CLK_DIV_MASK, + spicc_readl(spicc, SPICC_REG_CFG_BUS)); + spicc->cfg_bus.b.clk_div =3D div; + spicc->effective_speed_hz =3D clk_get_rate(spicc->sclk); + dev_dbg(&spicc->pdev->dev, + "desired speed %dHz, effective speed %dHz, div=3D%d\n", + speed_hz, spicc->effective_speed_hz, div); + + return 0; +} + +static int aml_spicc_setup_device(struct spicc_device *spicc, + struct spi_device *spi) +{ + if (!spi->bits_per_word || spi->bits_per_word % 8) { + dev_err(&spicc->pdev->dev, "invalid wordlen %d\n", spi->bits_per_word); + return -EINVAL; + } + + spicc->bytes_per_word =3D spi->bits_per_word >> 3; + spicc->cfg_start.b.block_size =3D spicc->bytes_per_word & 0x7; + spicc->cfg_spi.b.ss =3D spi_get_chipselect(spi, 0); + + spicc->cfg_bus.b.cpol =3D !!(spi->mode & SPI_CPOL); + spicc->cfg_bus.b.cpha =3D !!(spi->mode & SPI_CPHA); + spicc->cfg_bus.b.little_endian_en =3D !!(spi->mode & SPI_LSB_FIRST); + spicc->cfg_bus.b.half_duplex_en =3D !!(spi->mode & SPI_3WIRE); + + return 0; +} + +static bool aml_spicc_can_dma(struct spi_controller *ctlr, + struct spi_device *spi, + struct spi_transfer *xfer) +{ + return true; +} + +static void aml_spicc_sg_xlate(struct sg_table *sgt, struct spicc_sg_link = *ccsg) +{ + struct scatterlist *sg; + int i; + + for_each_sg(sgt->sgl, sg, sgt->nents, i) { + ccsg->valid =3D 1; + /* EOC specially for the last sg */ + ccsg->eoc =3D sg_is_last(sg); + ccsg->ring =3D 0; + ccsg->len =3D sg_dma_len(sg); + ccsg->addr =3D (u32)sg_dma_address(sg); + ccsg++; + } +} + +static int nbits_to_lane[] =3D { + SPICC_SINGLE_SPI, + SPICC_SINGLE_SPI, + SPICC_DUAL_SPI, + -EINVAL, + SPICC_QUAD_SPI +}; + +static int aml_spicc_setup_transfer(struct spicc_device *spicc, + struct spi_transfer *xfer, + struct spicc_descriptor *desc, + struct spicc_descriptor_extra *exdesc) +{ + int block_size, blocks; + struct device *dev =3D &spicc->pdev->dev; + struct spicc_sg_link *ccsg; + int ccsg_len; + dma_addr_t paddr; + int ret; + + memset(desc, 0, sizeof(*desc)); + if (exdesc) + memset(exdesc, 0, sizeof(*exdesc)); + aml_spicc_set_speed(spicc, xfer->speed_hz); + xfer->effective_speed_hz =3D spicc->effective_speed_hz; + desc->cfg_start.d32 =3D spicc->cfg_start.d32; + desc->cfg_bus.d32 =3D spicc->cfg_bus.d32; + + block_size =3D xfer->bits_per_word >> 3; + blocks =3D xfer->len / block_size; + + desc->cfg_start.b.tx_data_mode =3D SPICC_DATA_MODE_NONE; + desc->cfg_start.b.rx_data_mode =3D SPICC_DATA_MODE_NONE; + desc->cfg_start.b.eoc =3D 0; + desc->cfg_bus.b.keep_ss =3D !xfer->cs_change; + desc->cfg_bus.b.null_ctl =3D 0; + + if (xfer->tx_buf || xfer->tx_dma) { + desc->cfg_bus.b.lane =3D nbits_to_lane[xfer->tx_nbits]; + desc->cfg_start.b.op_mode =3D SPICC_OP_MODE_WRITE; + } + if (xfer->rx_buf || xfer->rx_dma) { + desc->cfg_bus.b.lane =3D nbits_to_lane[xfer->rx_nbits]; + desc->cfg_start.b.op_mode =3D SPICC_OP_MODE_READ; + } + + if (desc->cfg_start.b.op_mode =3D=3D SPICC_OP_MODE_READ_STS) { + desc->cfg_start.b.block_size =3D blocks; + desc->cfg_start.b.block_num =3D 1; + } else { + desc->cfg_start.b.block_size =3D block_size & 0x7; + blocks =3D min_t(int, blocks, SPICC_BLOCK_MAX); + desc->cfg_start.b.block_num =3D blocks; + } + + if (xfer->tx_sg.nents && xfer->tx_sg.sgl) { + ccsg_len =3D xfer->tx_sg.nents * sizeof(struct spicc_sg_link); + ccsg =3D kzalloc(ccsg_len, GFP_KERNEL | GFP_DMA); + if (!ccsg) { + dev_err(dev, "alloc tx_ccsg failed\n"); + return -ENOMEM; + } + + aml_spicc_sg_xlate(&xfer->tx_sg, ccsg); + paddr =3D dma_map_single(dev, (void *)ccsg, + ccsg_len, DMA_TO_DEVICE); + ret =3D dma_mapping_error(dev, paddr); + if (ret) { + kfree(ccsg); + dev_err(dev, "tx ccsg map failed\n"); + return ret; + } + + desc->tx_paddr =3D paddr; + desc->cfg_start.b.tx_data_mode =3D SPICC_DATA_MODE_SG; + exdesc->tx_ccsg =3D ccsg; + exdesc->tx_ccsg_len =3D ccsg_len; + dma_sync_sgtable_for_device(spicc->controller->cur_tx_dma_dev, + &xfer->tx_sg, DMA_TO_DEVICE); + } else if (xfer->tx_buf || xfer->tx_dma) { + paddr =3D xfer->tx_dma; + if (!paddr) { + paddr =3D dma_map_single(dev, (void *)xfer->tx_buf, + xfer->len, DMA_TO_DEVICE); + ret =3D dma_mapping_error(dev, paddr); + if (ret) { + dev_err(dev, "tx buf map failed\n"); + return ret; + } + } + desc->tx_paddr =3D paddr; + desc->cfg_start.b.tx_data_mode =3D SPICC_DATA_MODE_MEM; + } + + if (xfer->rx_sg.nents && xfer->rx_sg.sgl) { + ccsg_len =3D xfer->rx_sg.nents * sizeof(struct spicc_sg_link); + ccsg =3D kzalloc(ccsg_len, GFP_KERNEL | GFP_DMA); + if (!ccsg) { + dev_err(dev, "alloc rx_ccsg failed\n"); + return -ENOMEM; + } + + aml_spicc_sg_xlate(&xfer->rx_sg, ccsg); + paddr =3D dma_map_single(dev, (void *)ccsg, + ccsg_len, DMA_TO_DEVICE); + ret =3D dma_mapping_error(dev, paddr); + if (ret) { + kfree(ccsg); + dev_err(dev, "rx ccsg map failed\n"); + return ret; + } + + desc->rx_paddr =3D paddr; + desc->cfg_start.b.rx_data_mode =3D SPICC_DATA_MODE_SG; + exdesc->rx_ccsg =3D ccsg; + exdesc->rx_ccsg_len =3D ccsg_len; + dma_sync_sgtable_for_device(spicc->controller->cur_rx_dma_dev, + &xfer->rx_sg, DMA_FROM_DEVICE); + } else if (xfer->rx_buf || xfer->rx_dma) { + paddr =3D xfer->rx_dma; + if (!paddr) { + paddr =3D dma_map_single(dev, xfer->rx_buf, + xfer->len, DMA_FROM_DEVICE); + ret =3D dma_mapping_error(dev, paddr); + if (ret) { + dev_err(dev, "rx buf map failed\n"); + return ret; + } + } + + desc->rx_paddr =3D paddr; + desc->cfg_start.b.rx_data_mode =3D SPICC_DATA_MODE_MEM; + } + + return 0; +} + +static void aml_spicc_cleanup_transfer(struct spicc_device *spicc, + struct spi_transfer *xfer, + struct spicc_descriptor *desc, + struct spicc_descriptor_extra *exdesc) +{ + struct device *dev =3D &spicc->pdev->dev; + + if (desc->tx_paddr) { + if (desc->cfg_start.b.tx_data_mode =3D=3D SPICC_DATA_MODE_SG) { + dma_unmap_single(dev, (dma_addr_t)desc->tx_paddr, + exdesc->tx_ccsg_len, DMA_TO_DEVICE); + kfree(exdesc->tx_ccsg); + dma_sync_sgtable_for_cpu(spicc->controller->cur_tx_dma_dev, + &xfer->tx_sg, DMA_TO_DEVICE); + } else if (!xfer->tx_dma) { + dma_unmap_single(dev, (dma_addr_t)desc->tx_paddr, + xfer->len, DMA_TO_DEVICE); + } + } + + if (desc->rx_paddr) { + if (desc->cfg_start.b.rx_data_mode =3D=3D SPICC_DATA_MODE_SG) { + dma_unmap_single(dev, (dma_addr_t)desc->rx_paddr, + exdesc->rx_ccsg_len, DMA_TO_DEVICE); + kfree(exdesc->rx_ccsg); + dma_sync_sgtable_for_cpu(spicc->controller->cur_rx_dma_dev, + &xfer->rx_sg, DMA_FROM_DEVICE); + } else if (!xfer->rx_dma) { + dma_unmap_single(dev, (dma_addr_t)desc->rx_paddr, + xfer->len, DMA_FROM_DEVICE); + } + } +} + +static void aml_spicc_setup_null_desc(struct spicc_device *spicc, + struct spicc_descriptor *desc, + u32 n_sclk) +{ + /* unit is the last xfer sclk */ + desc->cfg_start.d32 =3D spicc->cfg_start.d32; + desc->cfg_bus.d32 =3D spicc->cfg_bus.d32; + desc->cfg_start.b.op_mode =3D SPICC_OP_MODE_WRITE; + desc->cfg_start.b.block_size =3D 1; + desc->cfg_start.b.block_num =3D DIV_ROUND_UP(n_sclk, 8); + desc->cfg_bus.b.null_ctl =3D 1; +} + +static void aml_spicc_pending(struct spicc_device *spicc, + dma_addr_t desc_paddr, + bool trig, + bool irq_en) +{ + u32 desc_l, desc_h, cfg_spi; + +#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT + desc_l =3D (u64)desc_paddr & 0xffffffff; + desc_h =3D (u64)desc_paddr >> 32; +#else + desc_l =3D desc_paddr & 0xffffffff; + desc_h =3D 0; +#endif + + cfg_spi =3D spicc->cfg_spi.d32; + if (trig) + cfg_spi |=3D HW_POS; + else + desc_h |=3D SPICC_DESC_PENDING; + + spicc_writel(spicc, irq_en ? SPICC_DESC_CHAIN_DONE : 0, + SPICC_REG_IRQ_ENABLE); + spicc_writel(spicc, cfg_spi, SPICC_REG_CFG_SPI); + spicc_writel(spicc, desc_l, SPICC_REG_DESC_LIST_L); + spicc_writel(spicc, desc_h, SPICC_REG_DESC_LIST_H); +} + +static irqreturn_t aml_spicc_irq(int irq, void *data) +{ + struct spicc_device *spicc =3D (void *)data; + u32 sts; + + spicc->status =3D 0; + sts =3D spicc_readl(spicc, SPICC_REG_IRQ_STS); + spicc_writel(spicc, sts, SPICC_REG_IRQ_STS); + if (sts & (SPICC_RCH_DESC_INVALID | + SPICC_RCH_DESC_RESP | + SPICC_RCH_DATA_RESP | + SPICC_WCH_DESC_INVALID | + SPICC_WCH_DESC_RESP | + SPICC_WCH_DATA_RESP | + SPICC_DESC_ERR)) { + spicc->status =3D sts; + } + + complete(&spicc->completion); + + return IRQ_HANDLED; +} + +static int aml_spicc_transfer_one_message(struct spi_controller *ctlr, + struct spi_message *msg) +{ + struct spicc_device *spicc =3D spi_controller_get_devdata(ctlr); + struct device *dev =3D &spicc->pdev->dev; + unsigned long long ms =3D 0; + struct spi_transfer *xfer; + struct spicc_descriptor *descs, *desc; + struct spicc_descriptor_extra *exdescs, *exdesc; + dma_addr_t descs_paddr; + int desc_num =3D 1, descs_len; + u32 cs_hold_in_sclk =3D 0; + int ret =3D -EIO; + + if (!aml_spicc_sem_down_read(spicc)) { + spi_finalize_current_message(ctlr); + dev_err(dev, "controller busy\n"); + return -EBUSY; + } + + /*calculate the desc num for all xfer */ + list_for_each_entry(xfer, &msg->transfers, transfer_list) + desc_num++; + + /* alloc descriptor/extra-descriptor table */ + descs =3D kcalloc(desc_num, sizeof(*desc) + sizeof(*exdesc), + GFP_KERNEL | GFP_DMA); + if (!descs) { + spi_finalize_current_message(ctlr); + aml_spicc_sem_up_write(spicc); + return -ENOMEM; + } + descs_len =3D sizeof(*desc) * desc_num; + exdescs =3D (struct spicc_descriptor_extra *)(descs + desc_num); + + /* config descriptor for each xfer */ + desc =3D descs; + exdesc =3D exdescs; + list_for_each_entry(xfer, &msg->transfers, transfer_list) { + ret =3D aml_spicc_setup_transfer(spicc, xfer, desc, exdesc); + if (ret) { + dev_err(dev, "config descriptor failed\n"); + goto end; + } + + /* calculate cs-setup delay with the first xfer speed */ + if (list_is_first(&xfer->transfer_list, &msg->transfers)) + desc->cfg_bus.b.cs_setup_in_sclk =3D + spi_delay_to_sclk(xfer->effective_speed_hz, &msg->spi->cs_setup); + + /* calculate cs-hold delay with the last xfer speed */ + if (list_is_last(&xfer->transfer_list, &msg->transfers)) + cs_hold_in_sclk =3D + spi_delay_to_sclk(xfer->effective_speed_hz, &msg->spi->cs_hold); + + desc++; + exdesc++; + ms +=3D DIV_ROUND_UP_ULL(8LL * MSEC_PER_SEC * xfer->len, + xfer->effective_speed_hz); + } + + if (cs_hold_in_sclk) + /* additional null-descriptor to achieve the cs-hold delay */ + aml_spicc_setup_null_desc(spicc, desc, cs_hold_in_sclk); + else + desc--; + + desc->cfg_bus.b.keep_ss =3D 0; + desc->cfg_start.b.eoc =3D 1; + + /* some tolerances */ + ms +=3D ms + 20; + if (ms > UINT_MAX) + ms =3D UINT_MAX; + + descs_paddr =3D dma_map_single(dev, (void *)descs, + descs_len, DMA_TO_DEVICE); + ret =3D dma_mapping_error(dev, descs_paddr); + if (ret) { + dev_err(dev, "desc table map failed\n"); + goto end; + } + + reinit_completion(&spicc->completion); + aml_spicc_pending(spicc, descs_paddr, false, true); + if (wait_for_completion_timeout(&spicc->completion, + spi_controller_is_target(spicc->controller) ? + MAX_SCHEDULE_TIMEOUT : msecs_to_jiffies(ms))) + ret =3D spicc->status ? -EIO : 0; + else + ret =3D -ETIMEDOUT; + + dma_unmap_single(dev, descs_paddr, descs_len, DMA_TO_DEVICE); +end: + desc =3D descs; + exdesc =3D exdescs; + list_for_each_entry(xfer, &msg->transfers, transfer_list) + aml_spicc_cleanup_transfer(spicc, xfer, desc++, exdesc++); + kfree(descs); + + if (!ret) + msg->actual_length =3D msg->frame_length; + msg->status =3D ret; + spi_finalize_current_message(ctlr); + aml_spicc_sem_up_write(spicc); + + return ret; +} + +static int aml_spicc_prepare_message(struct spi_controller *ctlr, + struct spi_message *message) +{ + struct spicc_device *spicc =3D spi_controller_get_devdata(ctlr); + + return aml_spicc_setup_device(spicc, message->spi); +} + +static int aml_spicc_setup(struct spi_device *spi) +{ + if (!spi->controller_state) + spi->controller_state =3D spi_controller_get_devdata(spi->controller); + + return 0; +} + +static void aml_spicc_cleanup(struct spi_device *spi) +{ + spi->controller_state =3D NULL; +} + +static int aml_spicc_target_abort(struct spi_controller *ctlr) +{ + struct spicc_device *spicc =3D spi_controller_get_devdata(ctlr); + + spicc->status =3D 0; + spicc_writel(spicc, 0, SPICC_REG_DESC_LIST_H); + complete(&spicc->completion); + + return 0; +} + +#define DIV_NUM (SPICC_CLK_DIV_MAX - SPICC_CLK_DIV_MIN + 1) +static struct clk_div_table linear_div_table[DIV_NUM + 1] =3D { + [0] =3D {0, 0 /* init flag */}, + [DIV_NUM] =3D {0, 0 /* sentinel */} +}; + +static int aml_spicc_clk_init(struct spicc_device *spicc) +{ + struct device *dev =3D &spicc->pdev->dev; + struct clk_init_data init; + struct clk_divider *div; + const char *parent_names[1]; + char name[32]; + u32 pclk_rate =3D 0; + u32 val; + int i; + + spicc->core =3D devm_clk_get_enabled(dev, "core"); + if (IS_ERR_OR_NULL(spicc->core)) + dev_warn(dev, "core clock request failed\n"); + + spicc->pclk =3D devm_clk_get_enabled(dev, "pclk"); + if (IS_ERR_OR_NULL(spicc->pclk)) { + dev_err(dev, "pclk clock request failed\n"); + return PTR_ERR(spicc->pclk); + } + clk_set_min_rate(spicc->pclk, SPICC_PCLK_RATE_MIN); + + if (!linear_div_table[0].div) + for (i =3D 0; i < DIV_NUM; i++) { + linear_div_table[i].val =3D i + SPICC_CLK_DIV_MIN - 1; + linear_div_table[i].div =3D i + SPICC_CLK_DIV_MIN; + } + + div =3D devm_kzalloc(dev, sizeof(*div), GFP_KERNEL); + if (!div) + return -ENOMEM; + + div->flags =3D CLK_DIVIDER_ROUND_CLOSEST; + div->reg =3D spicc->base + SPICC_REG_CFG_BUS; + div->shift =3D SPICC_CLK_DIV_SHIFT; + div->width =3D SPICC_CLK_DIV_WIDTH; + div->table =3D linear_div_table; + + /* Register value should not be outside of the table */ + val =3D spicc_readl(spicc, SPICC_REG_CFG_BUS); + val &=3D ~SPICC_CLK_DIV_MASK; + val |=3D FIELD_PREP(SPICC_CLK_DIV_MASK, SPICC_CLK_DIV_MIN - 1); + spicc_writel(spicc, val, SPICC_REG_CFG_BUS); + + /* Register clk-divider */ + parent_names[0] =3D __clk_get_name(spicc->pclk); + snprintf(name, sizeof(name), "%s_div", dev_name(dev)); + init.name =3D name; + init.ops =3D &clk_divider_ops; + init.flags =3D CLK_SET_RATE_PARENT; + /* + * For multiple transmission of different speeds in one message, the + * parent clock rate needs to be fixed by dts configuration. + */ + of_property_read_u32(dev->of_node, "fixed-pclk-rate", &pclk_rate); + if (pclk_rate) { + clk_set_rate(spicc->pclk, pclk_rate); + init.flags =3D 0; + } + init.parent_names =3D parent_names; + init.num_parents =3D 1; + div->hw.init =3D &init; + + spicc->sclk =3D devm_clk_register(dev, &div->hw); + if (IS_ERR_OR_NULL(spicc->sclk)) { + dev_err(dev, "clock registration failed\n"); + return PTR_ERR(spicc->sclk); + } + + return 0; +} + +static int aml_spicc_probe(struct platform_device *pdev) +{ + struct spi_controller *ctlr; + struct spicc_device *spicc; + int ret, irq; + + ctlr =3D __spi_alloc_controller(&pdev->dev, sizeof(*spicc), + of_property_read_bool(pdev->dev.of_node, "slave")); + if (!ctlr) { + dev_err(&pdev->dev, "controller allocation failed\n"); + return -ENOMEM; + } + spicc =3D spi_controller_get_devdata(ctlr); + spicc->controller =3D ctlr; + + spicc->pdev =3D pdev; + platform_set_drvdata(pdev, spicc); + + spicc->base =3D devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR_OR_NULL(spicc->base)) { + dev_err(&pdev->dev, "io resource mapping failed\n"); + ret =3D PTR_ERR(spicc->base); + goto out_controller; + } + + irq =3D platform_get_irq(pdev, 0); + if (irq < 0) { + ret =3D irq; + goto out_controller; + } + + ret =3D devm_request_irq(&pdev->dev, irq, aml_spicc_irq, + IRQF_TRIGGER_RISING, NULL, spicc); + if (ret) { + dev_err(&pdev->dev, "irq request failed\n"); + goto out_controller; + } + + ret =3D aml_spicc_clk_init(spicc); + if (ret) + goto out_controller; + + spicc->cfg_spi.d32 =3D 0; + spicc->cfg_start.d32 =3D 0; + spicc->cfg_bus.d32 =3D 0; + + spicc->cfg_spi.b.flash_wp_pin_en =3D 1; + spicc->cfg_spi.b.flash_hold_pin_en =3D 1; + if (spi_controller_is_target(ctlr)) { + spicc->cfg_spi.b.slave_en =3D true; + spicc->cfg_bus.b.tx_tuning_in_pclk =3D -1; + } + /* default pending */ + spicc->cfg_start.b.pending =3D 1; + + device_reset_optional(&pdev->dev); + ctlr->num_chipselect =3D 4; + ctlr->dev.of_node =3D pdev->dev.of_node; + ctlr->mode_bits =3D SPI_CPHA | SPI_CPOL | SPI_LSB_FIRST | + SPI_3WIRE | SPI_TX_QUAD | SPI_RX_QUAD; + ctlr->max_speed_hz =3D 1000 * 1000 * 100; + ctlr->min_speed_hz =3D 1000 * 10; + ctlr->setup =3D aml_spicc_setup; + ctlr->cleanup =3D aml_spicc_cleanup; + ctlr->prepare_message =3D aml_spicc_prepare_message; + ctlr->transfer_one_message =3D aml_spicc_transfer_one_message; + ctlr->target_abort =3D aml_spicc_target_abort; + ctlr->can_dma =3D aml_spicc_can_dma; + ctlr->max_dma_len =3D SPICC_BLOCK_MAX; + dma_set_max_seg_size(&pdev->dev, SPICC_BLOCK_MAX); + ret =3D devm_spi_register_controller(&pdev->dev, ctlr); + if (ret) { + dev_err(&pdev->dev, "spi controller registration failed\n"); + goto out_clk; + } + + init_completion(&spicc->completion); + + return 0; + +out_clk: + if (spicc->core) + clk_disable_unprepare(spicc->core); + clk_disable_unprepare(spicc->pclk); +out_controller: + spi_controller_put(ctlr); + + return ret; +} + +static void aml_spicc_remove(struct platform_device *pdev) +{ + struct spicc_device *spicc =3D platform_get_drvdata(pdev); + + if (spicc->core) + clk_disable_unprepare(spicc->core); + clk_disable_unprepare(spicc->pclk); +} + +static int aml_spicc_off(struct spicc_device *spicc) +{ + pinctrl_pm_select_sleep_state(&spicc->pdev->dev); + clk_disable_unprepare(spicc->pclk); + if (spicc->core) + clk_disable_unprepare(spicc->core); + + return 0; +} + +static int aml_spicc_on(struct spicc_device *spicc) +{ + if (spicc->core) + clk_prepare_enable(spicc->core); + clk_prepare_enable(spicc->pclk); + pinctrl_pm_select_default_state(&spicc->pdev->dev); + + return 0; +} + +#ifdef CONFIG_HIBERNATION +static int aml_spicc_freeze(struct device *dev) +{ + struct spicc_device *spicc =3D dev_get_drvdata(dev); + + return aml_spicc_off(spicc); +} + +static int aml_spicc_thaw(struct device *dev) +{ + struct spicc_device *spicc =3D dev_get_drvdata(dev); + + return aml_spicc_on(spicc); +} + +static int aml_spicc_restore(struct device *dev) +{ + struct spicc_device *spicc =3D dev_get_drvdata(dev); + + return aml_spicc_on(spicc); +} +#endif + +static void aml_spicc_shutdown(struct platform_device *pdev) +{ + struct spicc_device *spicc =3D platform_get_drvdata(pdev); + + aml_spicc_off(spicc); +} + +static int aml_spicc_suspend(struct device *dev) +{ + struct spicc_device *spicc =3D dev_get_drvdata(dev); + int ret; + + ret =3D spi_controller_suspend(spicc->controller); + if (!ret) + ret =3D aml_spicc_off(spicc); + + return ret; +} + +static int aml_spicc_resume(struct device *dev) +{ + struct spicc_device *spicc =3D dev_get_drvdata(dev); + int ret; + + ret =3D aml_spicc_on(spicc); + if (!ret) + ret =3D spi_controller_resume(spicc->controller); + + return ret; +} + +static const struct dev_pm_ops amlogic_spicc_pm_ops =3D { + .suspend =3D aml_spicc_suspend, + .resume =3D aml_spicc_resume, +#ifdef CONFIG_HIBERNATION + .freeze =3D aml_spicc_freeze, + .thaw =3D aml_spicc_thaw, + .restore =3D aml_spicc_restore, +#endif +}; + +static const struct of_device_id amlogic_spisg_of_match[] =3D { + { + .compatible =3D "amlogic,a4-spisg", + }, + + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, amlogic_spisg_of_match); + +struct platform_driver amlogic_spisg_driver =3D { + .probe =3D aml_spicc_probe, + .remove =3D aml_spicc_remove, + .shutdown =3D aml_spicc_shutdown, + .driver =3D { + .name =3D "amlogic-spisg", + .of_match_table =3D of_match_ptr(amlogic_spisg_of_match), + .pm =3D &amlogic_spicc_pm_ops, + }, +}; + +module_platform_driver(amlogic_spisg_driver); + +MODULE_DESCRIPTION("Amlogic SPI Scatter-Gather Controller driver"); +MODULE_AUTHOR("Sunny Luo "); +MODULE_LICENSE("GPL"); --=20 2.37.1 From nobody Sun Feb 8 14:05:25 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9A8E221B8F6; Wed, 4 Jun 2025 07:40:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250604-spisg-v1-3-5893dbe9d953@amlogic.com> References: <20250604-spisg-v1-0-5893dbe9d953@amlogic.com> In-Reply-To: <20250604-spisg-v1-0-5893dbe9d953@amlogic.com> To: Sunny Luo , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-amlogic@lists.infradead.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Xianwei Zhao X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=ed25519-sha256; t=1749022851; l=878; i=xianwei.zhao@amlogic.com; s=20231208; h=from:subject:message-id; bh=r4XosHXySa02DQkB3mCCJMHyJ40Hjw6wxKehQsmElKk=; b=V4rmS3CzffbGaQiEdobEEU7Z8PraHYH4CYYX3P8e/1YeEZXDgPrue6bxH7exz0FzZ2U8tUDPi BOhs5J0HjqVDceFzwk6dNAeM2qJD80EpRdu0UaiwOkr2m42wrmlSQZk X-Developer-Key: i=xianwei.zhao@amlogic.com; a=ed25519; pk=o4fDH8ZXL6xQg5h17eNzRljf6pwZHWWjqcOSsj3dW24= X-Endpoint-Received: by B4 Relay for xianwei.zhao@amlogic.com/20231208 with auth_id=107 X-Original-From: Xianwei Zhao Reply-To: xianwei.zhao@amlogic.com From: Xianwei Zhao Add Amlogic spi entry to MAINTAINERS to clarify the maintainers. Signed-off-by: Xianwei Zhao --- MAINTAINERS | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index ff4de47dbd55..8ed6da015668 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1271,6 +1271,15 @@ S: Maintained F: Documentation/devicetree/bindings/rtc/amlogic,a4-rtc.yaml F: drivers/rtc/rtc-amlogic-a4.c =20 +AMLOGIC SPISG DRIVER +M: Sunny Luo +M: Xianwei Zhao +L: linux-amlogic@lists.infradead.org +L: linux-spi@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/spi/amlogic,a4-spisg.yaml +F: drivers/spi/spi-amlogic-spisg.c + AMPHENOL CHIPCAP 2 DRIVER M: Javier Carrasco L: linux-hwmon@vger.kernel.org --=20 2.37.1