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Wed, 22 Jul 2020 04:32:55 -0800 Received: from mtkmbs07n1.mediatek.inc (172.21.101.16) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 22 Jul 2020 05:32:56 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 22 Jul 2020 20:32:55 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 22 Jul 2020 20:32:54 +0800 From: Qii Wang To: Subject: [PATCH 2/4] i2c: mediatek: Support DMA mask range over 33-bits Date: Wed, 22 Jul 2020 20:31:44 +0800 Message-ID: <1595421106-10017-3-git-send-email-qii.wang@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1595421106-10017-1-git-send-email-qii.wang@mediatek.com> References: <1595421106-10017-1-git-send-email-qii.wang@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-20200722_083307_382772_451180F6 X-CRM114-Status: GOOD ( 13.47 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -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_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-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qiangming.xia@mediatek.com, devicetree@vger.kernel.org, qii.wang@mediatek.com, srv_heupstream@mediatek.com, leilk.liu@mediatek.com, linux-kernel@vger.kernel.org, robh+dt@kernel.org, linux-mediatek@lists.infradead.org, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Replace 'support_33bits with 'dma_max_support' for DMA mask operation, and replace 'mtk_i2c_set_4g_mode' with 'upper_32_bits'. Signed-off-by: Qii Wang --- drivers/i2c/busses/i2c-mt65xx.c | 37 +++++++++++++++++-------------------- 1 file changed, 17 insertions(+), 20 deletions(-) diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c index e6b984a..e475877 100644 --- a/drivers/i2c/busses/i2c-mt65xx.c +++ b/drivers/i2c/busses/i2c-mt65xx.c @@ -209,6 +209,7 @@ struct mtk_i2c_compatible { unsigned char dma_sync: 1; unsigned char ltiming_adjust: 1; unsigned char apdma_sync: 1; + unsigned char max_dma_support; }; struct mtk_i2c_ac_timing { @@ -311,11 +312,11 @@ struct i2c_spec_values { .dcm = 1, .auto_restart = 1, .aux_len_reg = 1, - .support_33bits = 1, .timing_adjust = 1, .dma_sync = 0, .ltiming_adjust = 0, .apdma_sync = 0, + .max_dma_support = 33, }; static const struct mtk_i2c_compatible mt6577_compat = { @@ -325,11 +326,11 @@ struct i2c_spec_values { .dcm = 1, .auto_restart = 0, .aux_len_reg = 0, - .support_33bits = 0, .timing_adjust = 0, .dma_sync = 0, .ltiming_adjust = 0, .apdma_sync = 0, + .max_dma_support = 32, }; static const struct mtk_i2c_compatible mt6589_compat = { @@ -339,11 +340,11 @@ struct i2c_spec_values { .dcm = 0, .auto_restart = 0, .aux_len_reg = 0, - .support_33bits = 0, .timing_adjust = 0, .dma_sync = 0, .ltiming_adjust = 0, .apdma_sync = 0, + .max_dma_support = 32, }; static const struct mtk_i2c_compatible mt7622_compat = { @@ -353,11 +354,11 @@ struct i2c_spec_values { .dcm = 1, .auto_restart = 1, .aux_len_reg = 1, - .support_33bits = 0, .timing_adjust = 0, .dma_sync = 0, .ltiming_adjust = 0, .apdma_sync = 0, + .max_dma_support = 32, }; static const struct mtk_i2c_compatible mt8173_compat = { @@ -366,11 +367,11 @@ struct i2c_spec_values { .dcm = 1, .auto_restart = 1, .aux_len_reg = 1, - .support_33bits = 1, .timing_adjust = 0, .dma_sync = 0, .ltiming_adjust = 0, .apdma_sync = 0, + .max_dma_support = 33, }; static const struct mtk_i2c_compatible mt8183_compat = { @@ -380,11 +381,11 @@ struct i2c_spec_values { .dcm = 0, .auto_restart = 1, .aux_len_reg = 1, - .support_33bits = 1, .timing_adjust = 1, .dma_sync = 1, .ltiming_adjust = 1, .apdma_sync = 0, + .max_dma_support = 33, }; static const struct of_device_id mtk_i2c_of_match[] = { @@ -796,11 +797,6 @@ static int mtk_i2c_set_speed(struct mtk_i2c *i2c, unsigned int parent_clk) return 0; } -static inline u32 mtk_i2c_set_4g_mode(dma_addr_t addr) -{ - return (addr & BIT_ULL(32)) ? I2C_DMA_4G_MODE : I2C_DMA_CLR_FLAG; -} - static int mtk_i2c_do_transfer(struct mtk_i2c *i2c, struct i2c_msg *msgs, int num, int left_num) { @@ -885,8 +881,8 @@ static int mtk_i2c_do_transfer(struct mtk_i2c *i2c, struct i2c_msg *msgs, return -ENOMEM; } - if (i2c->dev_comp->support_33bits) { - reg_4g_mode = mtk_i2c_set_4g_mode(rpaddr); + if (i2c->dev_comp->max_dma_support > 32) { + reg_4g_mode = upper_32_bits(rpaddr); writel(reg_4g_mode, i2c->pdmabase + OFFSET_RX_4G_MODE); } @@ -908,8 +904,8 @@ static int mtk_i2c_do_transfer(struct mtk_i2c *i2c, struct i2c_msg *msgs, return -ENOMEM; } - if (i2c->dev_comp->support_33bits) { - reg_4g_mode = mtk_i2c_set_4g_mode(wpaddr); + if (i2c->dev_comp->max_dma_support > 32) { + reg_4g_mode = upper_32_bits(wpaddr); writel(reg_4g_mode, i2c->pdmabase + OFFSET_TX_4G_MODE); } @@ -954,11 +950,11 @@ static int mtk_i2c_do_transfer(struct mtk_i2c *i2c, struct i2c_msg *msgs, return -ENOMEM; } - if (i2c->dev_comp->support_33bits) { - reg_4g_mode = mtk_i2c_set_4g_mode(wpaddr); + if (i2c->dev_comp->max_dma_support > 32) { + reg_4g_mode = upper_32_bits(wpaddr); writel(reg_4g_mode, i2c->pdmabase + OFFSET_TX_4G_MODE); - reg_4g_mode = mtk_i2c_set_4g_mode(rpaddr); + reg_4g_mode = upper_32_bits(rpaddr); writel(reg_4g_mode, i2c->pdmabase + OFFSET_RX_4G_MODE); } @@ -1232,8 +1228,9 @@ static int mtk_i2c_probe(struct platform_device *pdev) return -EINVAL; } - if (i2c->dev_comp->support_33bits) { - ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(33)); + if (i2c->dev_comp->max_dma_support > 32) { + ret = dma_set_mask(&pdev->dev, + DMA_BIT_MASK(i2c->dev_comp->max_dma_support)); if (ret) { dev_err(&pdev->dev, "dma_set_mask return error.\n"); return ret;