From patchwork Wed Feb 9 11:19:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leilk Liu X-Patchwork-Id: 541332 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 23ABDC433FE for ; Wed, 9 Feb 2022 12:07:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229779AbiBIMH2 (ORCPT ); Wed, 9 Feb 2022 07:07:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47962 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233066AbiBIMGe (ORCPT ); Wed, 9 Feb 2022 07:06:34 -0500 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4C379C05CB9E; Wed, 9 Feb 2022 03:19:45 -0800 (PST) X-UUID: 6178447457b4491488bbf55058306cf0-20220209 X-UUID: 6178447457b4491488bbf55058306cf0-20220209 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 9602998; Wed, 09 Feb 2022 19:19:42 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Wed, 9 Feb 2022 19:19:41 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 9 Feb 2022 19:19:40 +0800 From: Leilk Liu To: Mark Brown CC: Rob Herring , Matthias Brugger , , , , , , Leilk Liu Subject: [PATCH 2/6] spi: mediatek: add IPM single mode design support Date: Wed, 9 Feb 2022 19:19:34 +0800 Message-ID: <20220209111938.16137-3-leilk.liu@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220209111938.16137-1-leilk.liu@mediatek.com> References: <20220209111938.16137-1-leilk.liu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org this patch add the support of IPM single mode design. Signed-off-by: Leilk Liu --- drivers/spi/spi-mt65xx.c | 103 +++++++++++++++++++++++++++++++++------ 1 file changed, 87 insertions(+), 16 deletions(-) diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c index a15de10ee286..1e196fa8ac83 100644 --- a/drivers/spi/spi-mt65xx.c +++ b/drivers/spi/spi-mt65xx.c @@ -31,6 +31,7 @@ #define SPI_CFG2_REG 0x0028 #define SPI_TX_SRC_REG_64 0x002c #define SPI_RX_DST_REG_64 0x0030 +#define SPI_CFG3_IPM_REG 0x0040 #define SPI_CFG0_SCK_HIGH_OFFSET 0 #define SPI_CFG0_SCK_LOW_OFFSET 8 @@ -48,6 +49,7 @@ #define SPI_CFG1_CS_IDLE_MASK 0xff #define SPI_CFG1_PACKET_LOOP_MASK 0xff00 #define SPI_CFG1_PACKET_LENGTH_MASK 0x3ff0000 +#define SPI_CFG1_IPM_PACKET_LENGTH_MASK GENMASK(31, 16) #define SPI_CFG2_SCK_HIGH_OFFSET 0 #define SPI_CFG2_SCK_LOW_OFFSET 16 @@ -68,7 +70,13 @@ #define SPI_CMD_TX_ENDIAN BIT(15) #define SPI_CMD_FINISH_IE BIT(16) #define SPI_CMD_PAUSE_IE BIT(17) +#define SPI_CMD_IPM_NONIDLE_MODE BIT(19) +#define SPI_CMD_IPM_SPIM_LOOP BIT(21) +#define SPI_CMD_IPM_GET_TICKDLY_OFFSET 22 +#define SPI_CMD_IPM_GET_TICKDLY_MASK GENMASK(24, 22) +#define SPI_CFG3_IPM_HALF_DUPLEX_DIR BIT(2) +#define SPI_CFG3_IPM_HALF_DUPLEX_EN BIT(3) #define MT8173_SPI_MAX_PAD_SEL 3 #define MTK_SPI_PAUSE_INT_STATUS 0x2 @@ -78,6 +86,7 @@ #define MTK_SPI_MAX_FIFO_SIZE 32U #define MTK_SPI_PACKET_SIZE 1024 +#define MTK_SPI_IPM_PACKET_SIZE SZ_64K #define MTK_SPI_32BITS_MASK (0xffffffff) #define DMA_ADDR_EXT_BITS (36) @@ -93,6 +102,9 @@ struct mtk_spi_compatible { bool dma_ext; /* some IC no need unprepare SPI clk */ bool no_need_unprepare; + /* IPM design improve some single mode features */ + bool ipm_design; + }; struct mtk_spi { @@ -116,6 +128,12 @@ static const struct mtk_spi_compatible mt2712_compat = { .must_tx = true, }; +static const struct mtk_spi_compatible ipm_compat_single = { + .enhance_timing = true, + .dma_ext = true, + .ipm_design = true, +}; + static const struct mtk_spi_compatible mt6765_compat = { .need_pad_sel = true, .must_tx = true, @@ -157,6 +175,9 @@ static const struct mtk_chip_config mtk_default_chip_info = { }; static const struct of_device_id mtk_spi_of_match[] = { + { .compatible = "mediatek,ipm-spi-single", + .data = (void *)&ipm_compat_single, + }, { .compatible = "mediatek,mt2701-spi", .data = (void *)&mtk_common_compat, }, @@ -275,12 +296,11 @@ static int mtk_spi_set_hw_cs_timing(struct spi_device *spi) return 0; } -static int mtk_spi_prepare_message(struct spi_master *master, - struct spi_message *msg) +static int mtk_spi_hw_init(struct spi_master *master, + struct spi_device *spi) { u16 cpha, cpol; u32 reg_val; - struct spi_device *spi = msg->spi; struct mtk_chip_config *chip_config = spi->controller_data; struct mtk_spi *mdata = spi_master_get_devdata(master); @@ -288,6 +308,15 @@ static int mtk_spi_prepare_message(struct spi_master *master, cpol = spi->mode & SPI_CPOL ? 1 : 0; reg_val = readl(mdata->base + SPI_CMD_REG); + if (mdata->dev_comp->ipm_design) { + /* SPI transfer without idle time until packet length done */ + reg_val |= SPI_CMD_IPM_NONIDLE_MODE; + if (spi->mode & SPI_LOOP) + reg_val |= SPI_CMD_IPM_SPIM_LOOP; + else + reg_val &= ~SPI_CMD_IPM_SPIM_LOOP; + } + if (cpha) reg_val |= SPI_CMD_CPHA; else @@ -344,18 +373,33 @@ static int mtk_spi_prepare_message(struct spi_master *master, writel(mdata->pad_sel[spi->chip_select], mdata->base + SPI_PAD_SEL_REG); - /* tick delay */ - reg_val = readl(mdata->base + SPI_CFG1_REG); - reg_val &= ~SPI_CFG1_GET_TICK_DLY_MASK; - reg_val |= ((chip_config->tick_delay & 0x7) - << SPI_CFG1_GET_TICK_DLY_OFFSET); - writel(reg_val, mdata->base + SPI_CFG1_REG); + if (mdata->dev_comp->enhance_timing) { + if (mdata->dev_comp->ipm_design) { + reg_val = readl(mdata->base + SPI_CMD_REG); + reg_val &= ~SPI_CMD_IPM_GET_TICKDLY_MASK; + reg_val |= ((chip_config->tick_delay & 0x7) + << SPI_CMD_IPM_GET_TICKDLY_OFFSET); + writel(reg_val, mdata->base + SPI_CMD_REG); + } else { + reg_val = readl(mdata->base + SPI_CFG1_REG); + reg_val &= ~SPI_CFG1_GET_TICK_DLY_MASK; + reg_val |= ((chip_config->tick_delay & 0x7) + << SPI_CFG1_GET_TICK_DLY_OFFSET); + writel(reg_val, mdata->base + SPI_CFG1_REG); + } + } /* set hw cs timing */ mtk_spi_set_hw_cs_timing(spi); return 0; } +static int mtk_spi_prepare_message(struct spi_master *master, + struct spi_message *msg) +{ + return mtk_spi_hw_init(master, msg->spi); +} + static void mtk_spi_set_cs(struct spi_device *spi, bool enable) { u32 reg_val; @@ -377,13 +421,13 @@ static void mtk_spi_set_cs(struct spi_device *spi, bool enable) } static void mtk_spi_prepare_transfer(struct spi_master *master, - struct spi_transfer *xfer) + u32 speed_hz) { u32 div, sck_time, reg_val; struct mtk_spi *mdata = spi_master_get_devdata(master); - if (xfer->speed_hz < mdata->spi_clk_hz / 2) - div = DIV_ROUND_UP(mdata->spi_clk_hz, xfer->speed_hz); + if (speed_hz < mdata->spi_clk_hz / 2) + div = DIV_ROUND_UP(mdata->spi_clk_hz, speed_hz); else div = 1; @@ -414,12 +458,24 @@ static void mtk_spi_setup_packet(struct spi_master *master) u32 packet_size, packet_loop, reg_val; struct mtk_spi *mdata = spi_master_get_devdata(master); - packet_size = min_t(u32, mdata->xfer_len, MTK_SPI_PACKET_SIZE); + if (mdata->dev_comp->ipm_design) + packet_size = min_t(u32, + mdata->xfer_len, + MTK_SPI_IPM_PACKET_SIZE); + else + packet_size = min_t(u32, + mdata->xfer_len, + MTK_SPI_PACKET_SIZE); + packet_loop = mdata->xfer_len / packet_size; reg_val = readl(mdata->base + SPI_CFG1_REG); - reg_val &= ~(SPI_CFG1_PACKET_LENGTH_MASK | SPI_CFG1_PACKET_LOOP_MASK); + if (mdata->dev_comp->ipm_design) + reg_val &= ~SPI_CFG1_IPM_PACKET_LENGTH_MASK; + else + reg_val &= ~SPI_CFG1_PACKET_LENGTH_MASK; reg_val |= (packet_size - 1) << SPI_CFG1_PACKET_LENGTH_OFFSET; + reg_val &= ~SPI_CFG1_PACKET_LOOP_MASK; reg_val |= (packet_loop - 1) << SPI_CFG1_PACKET_LOOP_OFFSET; writel(reg_val, mdata->base + SPI_CFG1_REG); } @@ -514,7 +570,7 @@ static int mtk_spi_fifo_transfer(struct spi_master *master, mdata->cur_transfer = xfer; mdata->xfer_len = min(MTK_SPI_MAX_FIFO_SIZE, xfer->len); mdata->num_xfered = 0; - mtk_spi_prepare_transfer(master, xfer); + mtk_spi_prepare_transfer(master, xfer->speed_hz); mtk_spi_setup_packet(master); if (xfer->tx_buf) { @@ -547,7 +603,7 @@ static int mtk_spi_dma_transfer(struct spi_master *master, mdata->cur_transfer = xfer; mdata->num_xfered = 0; - mtk_spi_prepare_transfer(master, xfer); + mtk_spi_prepare_transfer(master, xfer->speed_hz); cmd = readl(mdata->base + SPI_CMD_REG); if (xfer->tx_buf) @@ -582,6 +638,19 @@ static int mtk_spi_transfer_one(struct spi_master *master, struct spi_device *spi, struct spi_transfer *xfer) { + struct mtk_spi *mdata = spi_master_get_devdata(spi->master); + u32 reg_val = 0; + + /* prepare xfer direction and duplex mode */ + if (mdata->dev_comp->ipm_design) { + if (!xfer->tx_buf || !xfer->rx_buf) { + reg_val |= SPI_CFG3_IPM_HALF_DUPLEX_EN; + if (xfer->rx_buf) + reg_val |= SPI_CFG3_IPM_HALF_DUPLEX_DIR; + } + writel(reg_val, mdata->base + SPI_CFG3_IPM_REG); + } + if (master->can_dma(master, spi, xfer)) return mtk_spi_dma_transfer(master, spi, xfer); else @@ -746,6 +815,8 @@ static int mtk_spi_probe(struct platform_device *pdev) if (mdata->dev_comp->must_tx) master->flags = SPI_MASTER_MUST_TX; + if (mdata->dev_comp->ipm_design) + master->mode_bits |= SPI_LOOP; if (mdata->dev_comp->need_pad_sel) { mdata->pad_num = of_property_count_u32_elems( From patchwork Wed Feb 9 11:19:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leilk Liu X-Patchwork-Id: 541331 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 48419C433EF for ; Wed, 9 Feb 2022 12:08:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232466AbiBIMI3 (ORCPT ); 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Wed, 9 Feb 2022 19:19:43 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 9 Feb 2022 19:19:42 +0800 From: Leilk Liu To: Mark Brown CC: Rob Herring , Matthias Brugger , , , , , , Leilk Liu Subject: [PATCH 5/6] dt-bindings: spi: support mediatek,need_ahb_clk flag Date: Wed, 9 Feb 2022 19:19:37 +0800 Message-ID: <20220209111938.16137-6-leilk.liu@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220209111938.16137-1-leilk.liu@mediatek.com> References: <20220209111938.16137-1-leilk.liu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org this patch support mediatek,need_ahb_clk flag. Signed-off-by: Leilk Liu --- .../devicetree/bindings/spi/mediatek,spi-mt65xx.yaml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/spi/mediatek,spi-mt65xx.yaml b/Documentation/devicetree/bindings/spi/mediatek,spi-mt65xx.yaml index 241c0f5880d3..af12c1711182 100644 --- a/Documentation/devicetree/bindings/spi/mediatek,spi-mt65xx.yaml +++ b/Documentation/devicetree/bindings/spi/mediatek,spi-mt65xx.yaml @@ -71,6 +71,11 @@ properties: specify which pins group(ck/mi/mo/cs) spi controller used. This is an array. + mediatek,need_ahb_clk: + $ref: /schemas/types.yaml#/definitions/flag + description: + specify IC which need control ahb clock. + required: - compatible - reg From patchwork Wed Feb 9 11:19:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leilk Liu X-Patchwork-Id: 541333 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 B2FE0C4167E for ; Wed, 9 Feb 2022 12:07:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232324AbiBIMHZ (ORCPT ); Wed, 9 Feb 2022 07:07:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48042 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233074AbiBIMGf (ORCPT ); Wed, 9 Feb 2022 07:06:35 -0500 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 52E34C1036B2; Wed, 9 Feb 2022 03:19:47 -0800 (PST) X-UUID: fdd5064321cc4c2c95c543df8c0cde7d-20220209 X-UUID: fdd5064321cc4c2c95c543df8c0cde7d-20220209 Received: from mtkmbs10n1.mediatek.inc [(172.21.101.34)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1432437706; Wed, 09 Feb 2022 19:19:45 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Wed, 9 Feb 2022 19:19:44 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 9 Feb 2022 19:19:43 +0800 From: Leilk Liu To: Mark Brown CC: Rob Herring , Matthias Brugger , , , , , , Leilk Liu Subject: [PATCH 6/6] spi: mediatek: add need_ahb_clk support Date: Wed, 9 Feb 2022 19:19:38 +0800 Message-ID: <20220209111938.16137-7-leilk.liu@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220209111938.16137-1-leilk.liu@mediatek.com> References: <20220209111938.16137-1-leilk.liu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org this patch adds need_ahb_clk support. Signed-off-by: Leilk Liu --- drivers/spi/spi-mt65xx.c | 113 ++++++++++++++++++++++++++++++--------- 1 file changed, 87 insertions(+), 26 deletions(-) diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c index 9a40c6cd13ab..62bfbd7bf718 100644 --- a/drivers/spi/spi-mt65xx.c +++ b/drivers/spi/spi-mt65xx.c @@ -122,6 +122,8 @@ struct mtk_spi_compatible { bool ipm_design; /* IPM design that support quad mode */ bool support_quad; + /* some IC ahb & apb clk is different and also need to be enabled */ + bool need_ahb_clk; }; struct mtk_spi { @@ -129,13 +131,13 @@ struct mtk_spi { u32 state; int pad_num; u32 *pad_sel; - struct clk *parent_clk, *sel_clk, *spi_clk; + struct clk *parent_clk, *sel_clk, *spi_clk, *spi_hclk; struct spi_transfer *cur_transfer; u32 xfer_len; u32 num_xfered; struct scatterlist *tx_sgl, *rx_sgl; u32 tx_sgl_len, rx_sgl_len; - const struct mtk_spi_compatible *dev_comp; + struct mtk_spi_compatible *dev_comp; u32 spi_clk_hz; struct completion spimem_done; bool use_spimem; @@ -144,49 +146,49 @@ struct mtk_spi { dma_addr_t rx_dma; }; -static const struct mtk_spi_compatible mtk_common_compat; +static struct mtk_spi_compatible mtk_common_compat; -static const struct mtk_spi_compatible mt2712_compat = { +static struct mtk_spi_compatible mt2712_compat = { .must_tx = true, }; -static const struct mtk_spi_compatible ipm_compat_single = { +static struct mtk_spi_compatible ipm_compat_single = { .enhance_timing = true, .dma_ext = true, .ipm_design = true, }; -static const struct mtk_spi_compatible ipm_compat_quad = { +static struct mtk_spi_compatible ipm_compat_quad = { .enhance_timing = true, .dma_ext = true, .ipm_design = true, .support_quad = true, }; -static const struct mtk_spi_compatible mt6765_compat = { +static struct mtk_spi_compatible mt6765_compat = { .need_pad_sel = true, .must_tx = true, .enhance_timing = true, .dma_ext = true, }; -static const struct mtk_spi_compatible mt7622_compat = { +static struct mtk_spi_compatible mt7622_compat = { .must_tx = true, .enhance_timing = true, }; -static const struct mtk_spi_compatible mt8173_compat = { +static struct mtk_spi_compatible mt8173_compat = { .need_pad_sel = true, .must_tx = true, }; -static const struct mtk_spi_compatible mt8183_compat = { +static struct mtk_spi_compatible mt8183_compat = { .need_pad_sel = true, .must_tx = true, .enhance_timing = true, }; -static const struct mtk_spi_compatible mt6893_compat = { +static struct mtk_spi_compatible mt6893_compat = { .need_pad_sel = true, .must_tx = true, .enhance_timing = true, @@ -1201,25 +1203,46 @@ static int mtk_spi_probe(struct platform_device *pdev) goto err_put_master; } + mdata->dev_comp->need_ahb_clk = of_property_read_bool(pdev->dev.of_node, + "mediatek,need_ahb_clk"); + if (mdata->dev_comp->need_ahb_clk) { + mdata->spi_hclk = devm_clk_get(&pdev->dev, "spi-hclk"); + if (IS_ERR(mdata->spi_hclk)) { + ret = PTR_ERR(mdata->spi_hclk); + dev_err(&pdev->dev, "failed to get spi-hclk: %d\n", ret); + goto err_put_master; + } + + ret = clk_prepare_enable(mdata->spi_hclk); + if (ret < 0) { + dev_err(&pdev->dev, "failed to enable spi_hclk (%d)\n", ret); + goto err_put_master; + } + } + ret = clk_prepare_enable(mdata->spi_clk); if (ret < 0) { dev_err(&pdev->dev, "failed to enable spi_clk (%d)\n", ret); - goto err_put_master; + goto err_disable_spi_hclk; } ret = clk_set_parent(mdata->sel_clk, mdata->parent_clk); if (ret < 0) { dev_err(&pdev->dev, "failed to clk_set_parent (%d)\n", ret); - clk_disable_unprepare(mdata->spi_clk); - goto err_put_master; + goto err_disable_spi_clk; } mdata->spi_clk_hz = clk_get_rate(mdata->spi_clk); - if (mdata->dev_comp->no_need_unprepare) + if (mdata->dev_comp->no_need_unprepare) { clk_disable(mdata->spi_clk); - else + if (mdata->dev_comp->need_ahb_clk) + clk_disable(mdata->spi_hclk); + } else { clk_disable_unprepare(mdata->spi_clk); + if (mdata->dev_comp->need_ahb_clk) + clk_disable_unprepare(mdata->spi_hclk); + } pm_runtime_enable(&pdev->dev); @@ -1272,6 +1295,11 @@ static int mtk_spi_probe(struct platform_device *pdev) err_disable_runtime_pm: pm_runtime_disable(&pdev->dev); +err_disable_spi_clk: + clk_disable_unprepare(mdata->spi_clk); +err_disable_spi_hclk: + if (mdata->dev_comp->need_ahb_clk) + clk_disable_unprepare(mdata->spi_hclk); err_put_master: spi_master_put(master); @@ -1287,8 +1315,11 @@ static int mtk_spi_remove(struct platform_device *pdev) mtk_spi_reset(mdata); - if (mdata->dev_comp->no_need_unprepare) + if (mdata->dev_comp->no_need_unprepare) { clk_unprepare(mdata->spi_clk); + if (mdata->dev_comp->need_ahb_clk) + clk_unprepare(mdata->spi_hclk); + } return 0; } @@ -1304,8 +1335,11 @@ static int mtk_spi_suspend(struct device *dev) if (ret) return ret; - if (!pm_runtime_suspended(dev)) + if (!pm_runtime_suspended(dev)) { clk_disable_unprepare(mdata->spi_clk); + if (mdata->dev_comp->need_ahb_clk) + clk_disable_unprepare(mdata->spi_hclk); + } return ret; } @@ -1322,11 +1356,23 @@ static int mtk_spi_resume(struct device *dev) dev_err(dev, "failed to enable spi_clk (%d)\n", ret); return ret; } + + if (mdata->dev_comp->need_ahb_clk) { + clk_prepare_enable(mdata->spi_hclk); + if (ret < 0) { + dev_err(dev, "failed to enable spi_hclk (%d)\n", ret); + clk_disable_unprepare(mdata->spi_clk); + return ret; + } + } } ret = spi_master_resume(master); - if (ret < 0) + if (ret < 0) { clk_disable_unprepare(mdata->spi_clk); + if (mdata->dev_comp->need_ahb_clk) + clk_disable_unprepare(mdata->spi_hclk); + } return ret; } @@ -1338,10 +1384,15 @@ static int mtk_spi_runtime_suspend(struct device *dev) struct spi_master *master = dev_get_drvdata(dev); struct mtk_spi *mdata = spi_master_get_devdata(master); - if (mdata->dev_comp->no_need_unprepare) + if (mdata->dev_comp->no_need_unprepare) { clk_disable(mdata->spi_clk); - else + if (mdata->dev_comp->need_ahb_clk) + clk_disable(mdata->spi_hclk); + } else { clk_disable_unprepare(mdata->spi_clk); + if (mdata->dev_comp->need_ahb_clk) + clk_disable_unprepare(mdata->spi_hclk); + } return 0; } @@ -1352,13 +1403,23 @@ static int mtk_spi_runtime_resume(struct device *dev) struct mtk_spi *mdata = spi_master_get_devdata(master); int ret; - if (mdata->dev_comp->no_need_unprepare) + if (mdata->dev_comp->no_need_unprepare) { ret = clk_enable(mdata->spi_clk); - else + if (mdata->dev_comp->need_ahb_clk) + clk_enable(mdata->spi_hclk); + } else { ret = clk_prepare_enable(mdata->spi_clk); - if (ret < 0) { - dev_err(dev, "failed to enable spi_clk (%d)\n", ret); - return ret; + if (ret < 0) { + dev_err(dev, "failed to enable spi_clk (%d)\n", ret); + return ret; + } + + ret = clk_prepare_enable(mdata->spi_hclk); + if (ret < 0) { + dev_err(dev, "failed to enable spi_hclk (%d)\n", ret); + clk_disable_unprepare(mdata->spi_clk); + return ret; + } } return 0;