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Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY2PR0301MB0773 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160712_005502_356093_D137719A X-CRM114-Status: GOOD ( 17.16 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: aisheng.dong@nxp.com, ulf.hansson@linaro.org, dongas86@gmail.com, chris@printf.net, haibo.chen@nxp.com, adrian.hunter@intel.com, shawnguo@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 X-Virus-Scanned: ClamAV using ClamSMTP Move all hw related static initializations into a separate function which helps concentrate the hw related initialization code. And that function could also be called by other places later as a basic hw state restore. e.g. suspend/resume where the hw state is possible to lost due to low power mode. Signed-off-by: Dong Aisheng Acked-by: Adrian Hunter --- drivers/mmc/host/sdhci-esdhc-imx.c | 72 +++++++++++++++++++++----------------- 1 file changed, 40 insertions(+), 32 deletions(-) diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index bbb0bd4eac28..5a0e5dee977f 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -979,6 +979,44 @@ static const struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = { .ops = &sdhci_esdhc_ops, }; +static void sdhci_esdhc_imx_hwinit(struct sdhci_host *host) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct pltfm_imx_data *imx_data = sdhci_pltfm_priv(pltfm_host); + + if (esdhc_is_usdhc(imx_data)) { + /* + * The imx6q ROM code will change the default watermark + * level setting to something insane. Change it back here. + */ + writel(ESDHC_WTMK_DEFAULT_VAL, host->ioaddr + ESDHC_WTMK_LVL); + + /* + * ROM code will change the bit burst_length_enable setting + * to zero if this usdhc is choosed to boot system. Change + * it back here, otherwise it will impact the performance a + * lot. This bit is used to enable/disable the burst length + * for the external AHB2AXI bridge, it's usefully especially + * for INCR transfer because without burst length indicator, + * the AHB2AXI bridge does not know the burst length in + * advance. And without burst length indicator, AHB INCR + * transfer can only be converted to singles on the AXI side. + */ + writel(readl(host->ioaddr + SDHCI_HOST_CONTROL) + | ESDHC_BURST_LEN_EN_INCR, + host->ioaddr + SDHCI_HOST_CONTROL); + /* + * errata ESDHC_FLAG_ERR004536 fix for MX6Q TO1.2 and MX6DL + * TO1.1, it's harmless for MX6SL + */ + writel(readl(host->ioaddr + 0x6c) | BIT(7), + host->ioaddr + 0x6c); + + /* disable DLL_CTRL delay line settings */ + writel(0x0, host->ioaddr + ESDHC_DLL_CTRL); + } +} + #ifdef CONFIG_OF static int sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, @@ -1176,43 +1214,11 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev) host->quirks |= SDHCI_QUIRK_NO_MULTIBLOCK | SDHCI_QUIRK_BROKEN_ADMA; - /* - * The imx6q ROM code will change the default watermark level setting - * to something insane. Change it back here. - */ if (esdhc_is_usdhc(imx_data)) { - writel(ESDHC_WTMK_DEFAULT_VAL, host->ioaddr + ESDHC_WTMK_LVL); - host->quirks2 |= SDHCI_QUIRK2_PRESET_VALUE_BROKEN; host->mmc->caps |= MMC_CAP_1_8V_DDR; - - /* - * ROM code will change the bit burst_length_enable setting - * to zero if this usdhc is choosed to boot system. Change - * it back here, otherwise it will impact the performance a - * lot. This bit is used to enable/disable the burst length - * for the external AHB2AXI bridge, it's usefully especially - * for INCR transfer because without burst length indicator, - * the AHB2AXI bridge does not know the burst length in - * advance. And without burst length indicator, AHB INCR - * transfer can only be converted to singles on the AXI side. - */ - writel(readl(host->ioaddr + SDHCI_HOST_CONTROL) - | ESDHC_BURST_LEN_EN_INCR, - host->ioaddr + SDHCI_HOST_CONTROL); - if (!(imx_data->socdata->flags & ESDHC_FLAG_HS200)) host->quirks2 |= SDHCI_QUIRK2_BROKEN_HS200; - - /* - * errata ESDHC_FLAG_ERR004536 fix for MX6Q TO1.2 and MX6DL - * TO1.1, it's harmless for MX6SL - */ - writel(readl(host->ioaddr + 0x6c) | BIT(7), - host->ioaddr + 0x6c); - - /* disable DLL_CTRL delay line settings */ - writel(0x0, host->ioaddr + ESDHC_DLL_CTRL); } if (imx_data->socdata->flags & ESDHC_FLAG_MAN_TUNING) @@ -1237,6 +1243,8 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev) if (err) goto disable_clk; + sdhci_esdhc_imx_hwinit(host); + err = sdhci_add_host(host); if (err) goto disable_clk;