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Fri, 7 May 2021 09:47:25 +0000 From: "Peng Fan (OSS)" To: jassisinghbrar@gmail.com, robh+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, o.rempel@pengutronix.de Cc: kernel@pengutronix.de, festevam@gmail.com, aisheng.dong@nxp.com, linux-imx@nxp.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Peng Fan Subject: [PATCH 2/4] mailbox: imx: replace the xTR/xRR array with single register Date: Fri, 7 May 2021 18:19:24 +0800 Message-Id: <20210507101926.25631-3-peng.fan@oss.nxp.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210507101926.25631-1-peng.fan@oss.nxp.com> References: <20210507101926.25631-1-peng.fan@oss.nxp.com> X-Originating-IP: [119.31.174.71] X-ClientProxiedBy: SG2PR02CA0085.apcprd02.prod.outlook.com (2603:1096:4:90::25) To DB6PR0402MB2760.eurprd04.prod.outlook.com (2603:10a6:4:a1::14) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from linux-1xn6.ap.freescale.net (119.31.174.71) by SG2PR02CA0085.apcprd02.prod.outlook.com (2603:1096:4:90::25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4108.25 via Frontend Transport; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Peng Fan The xTR/xRR registers are using 4 bytes stride and continuous. Considering we will support more TR and RR registers, use base + idx * 4 method to calculate register address, not hardcoding in driver. Signed-off-by: Peng Fan --- drivers/mailbox/imx-mailbox.c | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-) diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c index 2543c7b6948b..bd7758c32a80 100644 --- a/drivers/mailbox/imx-mailbox.c +++ b/drivers/mailbox/imx-mailbox.c @@ -76,8 +76,8 @@ struct imx_mu_dcfg { int (*tx)(struct imx_mu_priv *priv, struct imx_mu_con_priv *cp, void *data); int (*rx)(struct imx_mu_priv *priv, struct imx_mu_con_priv *cp); void (*init)(struct imx_mu_priv *priv); - u32 xTR[4]; /* Transmit Registers */ - u32 xRR[4]; /* Receive Registers */ + u32 xTR; /* Transmit Register0 */ + u32 xRR; /* Receive Register0 */ u32 xSR; /* Status Register */ u32 xCR; /* Control Register */ }; @@ -120,7 +120,7 @@ static int imx_mu_generic_tx(struct imx_mu_priv *priv, switch (cp->type) { case IMX_MU_TYPE_TX: - imx_mu_write(priv, *arg, priv->dcfg->xTR[cp->idx]); + imx_mu_write(priv, *arg, priv->dcfg->xTR + cp->idx * 4); imx_mu_xcr_rmw(priv, IMX_MU_xCR_TIEn(cp->idx), 0); break; case IMX_MU_TYPE_TXDB: @@ -140,7 +140,7 @@ static int imx_mu_generic_rx(struct imx_mu_priv *priv, { u32 dat; - dat = imx_mu_read(priv, priv->dcfg->xRR[cp->idx]); + dat = imx_mu_read(priv, priv->dcfg->xRR + (cp->idx) * 4); mbox_chan_received_data(cp->chan, (void *)&dat); return 0; @@ -172,7 +172,7 @@ static int imx_mu_scu_tx(struct imx_mu_priv *priv, } for (i = 0; i < 4 && i < msg->hdr.size; i++) - imx_mu_write(priv, *arg++, priv->dcfg->xTR[i % 4]); + imx_mu_write(priv, *arg++, priv->dcfg->xTR + (i % 4) * 4); for (; i < msg->hdr.size; i++) { ret = readl_poll_timeout(priv->base + priv->dcfg->xSR, xsr, @@ -182,7 +182,7 @@ static int imx_mu_scu_tx(struct imx_mu_priv *priv, dev_err(priv->dev, "Send data index: %d timeout\n", i); return ret; } - imx_mu_write(priv, *arg++, priv->dcfg->xTR[i % 4]); + imx_mu_write(priv, *arg++, priv->dcfg->xTR + (i % 4) * 4); } imx_mu_xcr_rmw(priv, IMX_MU_xCR_TIEn(cp->idx), 0); @@ -204,7 +204,7 @@ static int imx_mu_scu_rx(struct imx_mu_priv *priv, u32 xsr; imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_RIEn(0)); - *data++ = imx_mu_read(priv, priv->dcfg->xRR[0]); + *data++ = imx_mu_read(priv, priv->dcfg->xRR); if (msg.hdr.size > sizeof(msg) / 4) { dev_err(priv->dev, "Maximal message size (%zu bytes) exceeded on RX; got: %i bytes\n", sizeof(msg), msg.hdr.size << 2); @@ -218,7 +218,7 @@ static int imx_mu_scu_rx(struct imx_mu_priv *priv, dev_err(priv->dev, "timeout read idx %d\n", i); return ret; } - *data++ = imx_mu_read(priv, priv->dcfg->xRR[i % 4]); + *data++ = imx_mu_read(priv, priv->dcfg->xRR + (i % 4) * 4); } imx_mu_xcr_rmw(priv, IMX_MU_xCR_RIEn(0), 0); @@ -564,8 +564,8 @@ static const struct imx_mu_dcfg imx_mu_cfg_imx6sx = { .tx = imx_mu_generic_tx, .rx = imx_mu_generic_rx, .init = imx_mu_init_generic, - .xTR = {0x0, 0x4, 0x8, 0xc}, - .xRR = {0x10, 0x14, 0x18, 0x1c}, + .xTR = 0x0, + .xRR = 0x10, .xSR = 0x20, .xCR = 0x24, }; @@ -574,8 +574,8 @@ static const struct imx_mu_dcfg imx_mu_cfg_imx7ulp = { .tx = imx_mu_generic_tx, .rx = imx_mu_generic_rx, .init = imx_mu_init_generic, - .xTR = {0x20, 0x24, 0x28, 0x2c}, - .xRR = {0x40, 0x44, 0x48, 0x4c}, + .xTR = 0x20, + .xRR = 0x40, .xSR = 0x60, .xCR = 0x64, }; @@ -584,8 +584,8 @@ static const struct imx_mu_dcfg imx_mu_cfg_imx8_scu = { .tx = imx_mu_scu_tx, .rx = imx_mu_scu_rx, .init = imx_mu_init_scu, - .xTR = {0x0, 0x4, 0x8, 0xc}, - .xRR = {0x10, 0x14, 0x18, 0x1c}, + .xTR = 0x0 + .xRR = 0x10 .xSR = 0x20, .xCR = 0x24, }; -- 2.30.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel