From: Yuvaraj Kumar C D <yuvaraj.cd@gmail.com> To: linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, dianders@google.com, dianders@chromium.org, jh80.chung@samsung.com, cjb@laptop.org, tgih.jun@samsung.com, linux-mmc@vger.kernel.org, ulf.hansson@linaro.org Cc: sonnyrao@chromium.org, t.figa@samsung.com, kgene.kim@samsung.com, joshi@samsung.com, prashanth.g@samsung.com, alim.akhtar@samsung.com, Abhilash Kesavan <a.kesavan@samsung.com>, Yuvaraj Kumar C D <yuvaraj.cd@samsung.com> Subject: [PATCH] mmc: dw_mmc: exynos: Add support for exynos7 Date: Thu, 28 Aug 2014 18:48:53 +0530 [thread overview] Message-ID: <1409231933-14796-1-git-send-email-yuvaraj.cd@samsung.com> (raw) From: Abhilash Kesavan <a.kesavan@samsung.com> The Exynos7 has a DWMMC controller (v2.70a) which is different from prior versions. This patch adds new compatible strings for exynos7. This patch also fixes the CLKSEL register offset on exynos7. Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com> --- .../devicetree/bindings/mmc/exynos-dw-mshc.txt | 4 + drivers/mmc/host/dw_mmc-exynos.c | 91 +++++++++++++++++--- 2 files changed, 82 insertions(+), 13 deletions(-) diff --git a/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt index 6cd3525..ee4fc05 100644 --- a/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt +++ b/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt @@ -18,6 +18,10 @@ Required Properties: specific extensions. - "samsung,exynos5420-dw-mshc": for controllers with Samsung Exynos5420 specific extensions. + - "samsung,exynos7-dw-mshc": for controllers with Samsung Exynos7 + specific extensions. + - "samsung,exynos7-dw-mshc-smu": for controllers with Samsung Exynos7 + specific extensions having an SMU. * samsung,dw-mshc-ciu-div: Specifies the divider value for the card interface unit (ciu) clock. This property is applicable only for Exynos5 SoC's and diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c index 0fbc53a..509365c 100644 --- a/drivers/mmc/host/dw_mmc-exynos.c +++ b/drivers/mmc/host/dw_mmc-exynos.c @@ -25,6 +25,7 @@ #define NUM_PINS(x) (x + 2) #define SDMMC_CLKSEL 0x09C +#define SDMMC_CLKSEL64 0x0A8 #define SDMMC_CLKSEL_CCLK_SAMPLE(x) (((x) & 7) << 0) #define SDMMC_CLKSEL_CCLK_DRIVE(x) (((x) & 7) << 16) #define SDMMC_CLKSEL_CCLK_DIVIDER(x) (((x) & 7) << 24) @@ -65,6 +66,8 @@ enum dw_mci_exynos_type { DW_MCI_TYPE_EXYNOS5250, DW_MCI_TYPE_EXYNOS5420, DW_MCI_TYPE_EXYNOS5420_SMU, + DW_MCI_TYPE_EXYNOS7, + DW_MCI_TYPE_EXYNOS7_SMU, }; /* Exynos implementation specific driver private data */ @@ -95,6 +98,12 @@ static struct dw_mci_exynos_compatible { }, { .compatible = "samsung,exynos5420-dw-mshc-smu", .ctrl_type = DW_MCI_TYPE_EXYNOS5420_SMU, + }, { + .compatible = "samsung,exynos7-dw-mshc", + .ctrl_type = DW_MCI_TYPE_EXYNOS7, + }, { + .compatible = "samsung,exynos7-dw-mshc-smu", + .ctrl_type = DW_MCI_TYPE_EXYNOS7_SMU, }, }; @@ -102,7 +111,8 @@ static int dw_mci_exynos_priv_init(struct dw_mci *host) { struct dw_mci_exynos_priv_data *priv = host->priv; - if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS5420_SMU) { + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS5420_SMU || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) { mci_writel(host, MPSBEGIN0, 0); mci_writel(host, MPSEND0, DWMCI_BLOCK_NUM); mci_writel(host, MPSCTRL0, DWMCI_MPSCTRL_SECURE_WRITE_BIT | @@ -153,11 +163,22 @@ static int dw_mci_exynos_resume(struct device *dev) static int dw_mci_exynos_resume_noirq(struct device *dev) { struct dw_mci *host = dev_get_drvdata(dev); + struct dw_mci_exynos_priv_data *priv = host->priv; u32 clksel; - clksel = mci_readl(host, CLKSEL); - if (clksel & SDMMC_CLKSEL_WAKEUP_INT) - mci_writel(host, CLKSEL, clksel); + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + clksel = mci_readl(host, CLKSEL64); + else + clksel = mci_readl(host, CLKSEL); + + if (clksel & SDMMC_CLKSEL_WAKEUP_INT) { + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + mci_writel(host, CLKSEL64, clksel); + else + mci_writel(host, CLKSEL, clksel); + } return 0; } @@ -169,6 +190,7 @@ static int dw_mci_exynos_resume_noirq(struct device *dev) static void dw_mci_exynos_prepare_command(struct dw_mci *host, u32 *cmdr) { + struct dw_mci_exynos_priv_data *priv = host->priv; /* * Exynos4412 and Exynos5250 extends the use of CMD register with the * use of bit 29 (which is reserved on standard MSHC controllers) for @@ -176,8 +198,14 @@ static void dw_mci_exynos_prepare_command(struct dw_mci *host, u32 *cmdr) * HOLD register should be bypassed in case there is no phase shift * applied on CMD/DATA that is sent to the card. */ - if (SDMMC_CLKSEL_GET_DRV_WD3(mci_readl(host, CLKSEL))) - *cmdr |= SDMMC_CMD_USE_HOLD_REG; + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) { + if (SDMMC_CLKSEL_GET_DRV_WD3(mci_readl(host, CLKSEL64))) + *cmdr |= SDMMC_CMD_USE_HOLD_REG; + } else { + if (SDMMC_CLKSEL_GET_DRV_WD3(mci_readl(host, CLKSEL))) + *cmdr |= SDMMC_CMD_USE_HOLD_REG; + } } static void dw_mci_exynos_set_ios(struct dw_mci *host, struct mmc_ios *ios) @@ -188,12 +216,20 @@ static void dw_mci_exynos_set_ios(struct dw_mci *host, struct mmc_ios *ios) u8 div = priv->ciu_div + 1; if (ios->timing == MMC_TIMING_MMC_DDR52) { - mci_writel(host, CLKSEL, priv->ddr_timing); + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + mci_writel(host, CLKSEL64, priv->ddr_timing); + else + mci_writel(host, CLKSEL, priv->ddr_timing); /* Should be double rate for DDR mode */ if (ios->bus_width == MMC_BUS_WIDTH_8) wanted <<= 1; } else { - mci_writel(host, CLKSEL, priv->sdr_timing); + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + mci_writel(host, CLKSEL64, priv->sdr_timing); + else + mci_writel(host, CLKSEL, priv->sdr_timing); } /* Don't care if wanted clock is zero */ @@ -265,26 +301,51 @@ static int dw_mci_exynos_parse_dt(struct dw_mci *host) static inline u8 dw_mci_exynos_get_clksmpl(struct dw_mci *host) { - return SDMMC_CLKSEL_CCLK_SAMPLE(mci_readl(host, CLKSEL)); + struct dw_mci_exynos_priv_data *priv = host->priv; + + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + return SDMMC_CLKSEL_CCLK_SAMPLE(mci_readl(host, CLKSEL64)); + else + return SDMMC_CLKSEL_CCLK_SAMPLE(mci_readl(host, CLKSEL)); } static inline void dw_mci_exynos_set_clksmpl(struct dw_mci *host, u8 sample) { u32 clksel; - clksel = mci_readl(host, CLKSEL); + struct dw_mci_exynos_priv_data *priv = host->priv; + + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + clksel = mci_readl(host, CLKSEL64); + else + clksel = mci_readl(host, CLKSEL); clksel = (clksel & ~0x7) | SDMMC_CLKSEL_CCLK_SAMPLE(sample); - mci_writel(host, CLKSEL, clksel); + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + mci_writel(host, CLKSEL64, clksel); + else + mci_writel(host, CLKSEL, clksel); } static inline u8 dw_mci_exynos_move_next_clksmpl(struct dw_mci *host) { + struct dw_mci_exynos_priv_data *priv = host->priv; u32 clksel; u8 sample; - clksel = mci_readl(host, CLKSEL); + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + clksel = mci_readl(host, CLKSEL64); + else + clksel = mci_readl(host, CLKSEL); sample = (clksel + 1) & 0x7; clksel = (clksel & ~0x7) | sample; - mci_writel(host, CLKSEL, clksel); + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + mci_writel(host, CLKSEL64, clksel); + else + mci_writel(host, CLKSEL, clksel); return sample; } @@ -411,6 +472,10 @@ static const struct of_device_id dw_mci_exynos_match[] = { .data = &exynos_drv_data, }, { .compatible = "samsung,exynos5420-dw-mshc-smu", .data = &exynos_drv_data, }, + { .compatible = "samsung,exynos7-dw-mshc", + .data = &exynos_drv_data, }, + { .compatible = "samsung,exynos7-dw-mshc-smu", + .data = &exynos_drv_data, }, {}, }; MODULE_DEVICE_TABLE(of, dw_mci_exynos_match); -- 1.7.10.4
WARNING: multiple messages have this Message-ID (diff)
From: yuvaraj.cd@gmail.com (Yuvaraj Kumar C D) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH] mmc: dw_mmc: exynos: Add support for exynos7 Date: Thu, 28 Aug 2014 18:48:53 +0530 [thread overview] Message-ID: <1409231933-14796-1-git-send-email-yuvaraj.cd@samsung.com> (raw) From: Abhilash Kesavan <a.kesavan@samsung.com> The Exynos7 has a DWMMC controller (v2.70a) which is different from prior versions. This patch adds new compatible strings for exynos7. This patch also fixes the CLKSEL register offset on exynos7. Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com> --- .../devicetree/bindings/mmc/exynos-dw-mshc.txt | 4 + drivers/mmc/host/dw_mmc-exynos.c | 91 +++++++++++++++++--- 2 files changed, 82 insertions(+), 13 deletions(-) diff --git a/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt index 6cd3525..ee4fc05 100644 --- a/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt +++ b/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt @@ -18,6 +18,10 @@ Required Properties: specific extensions. - "samsung,exynos5420-dw-mshc": for controllers with Samsung Exynos5420 specific extensions. + - "samsung,exynos7-dw-mshc": for controllers with Samsung Exynos7 + specific extensions. + - "samsung,exynos7-dw-mshc-smu": for controllers with Samsung Exynos7 + specific extensions having an SMU. * samsung,dw-mshc-ciu-div: Specifies the divider value for the card interface unit (ciu) clock. This property is applicable only for Exynos5 SoC's and diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c index 0fbc53a..509365c 100644 --- a/drivers/mmc/host/dw_mmc-exynos.c +++ b/drivers/mmc/host/dw_mmc-exynos.c @@ -25,6 +25,7 @@ #define NUM_PINS(x) (x + 2) #define SDMMC_CLKSEL 0x09C +#define SDMMC_CLKSEL64 0x0A8 #define SDMMC_CLKSEL_CCLK_SAMPLE(x) (((x) & 7) << 0) #define SDMMC_CLKSEL_CCLK_DRIVE(x) (((x) & 7) << 16) #define SDMMC_CLKSEL_CCLK_DIVIDER(x) (((x) & 7) << 24) @@ -65,6 +66,8 @@ enum dw_mci_exynos_type { DW_MCI_TYPE_EXYNOS5250, DW_MCI_TYPE_EXYNOS5420, DW_MCI_TYPE_EXYNOS5420_SMU, + DW_MCI_TYPE_EXYNOS7, + DW_MCI_TYPE_EXYNOS7_SMU, }; /* Exynos implementation specific driver private data */ @@ -95,6 +98,12 @@ static struct dw_mci_exynos_compatible { }, { .compatible = "samsung,exynos5420-dw-mshc-smu", .ctrl_type = DW_MCI_TYPE_EXYNOS5420_SMU, + }, { + .compatible = "samsung,exynos7-dw-mshc", + .ctrl_type = DW_MCI_TYPE_EXYNOS7, + }, { + .compatible = "samsung,exynos7-dw-mshc-smu", + .ctrl_type = DW_MCI_TYPE_EXYNOS7_SMU, }, }; @@ -102,7 +111,8 @@ static int dw_mci_exynos_priv_init(struct dw_mci *host) { struct dw_mci_exynos_priv_data *priv = host->priv; - if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS5420_SMU) { + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS5420_SMU || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) { mci_writel(host, MPSBEGIN0, 0); mci_writel(host, MPSEND0, DWMCI_BLOCK_NUM); mci_writel(host, MPSCTRL0, DWMCI_MPSCTRL_SECURE_WRITE_BIT | @@ -153,11 +163,22 @@ static int dw_mci_exynos_resume(struct device *dev) static int dw_mci_exynos_resume_noirq(struct device *dev) { struct dw_mci *host = dev_get_drvdata(dev); + struct dw_mci_exynos_priv_data *priv = host->priv; u32 clksel; - clksel = mci_readl(host, CLKSEL); - if (clksel & SDMMC_CLKSEL_WAKEUP_INT) - mci_writel(host, CLKSEL, clksel); + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + clksel = mci_readl(host, CLKSEL64); + else + clksel = mci_readl(host, CLKSEL); + + if (clksel & SDMMC_CLKSEL_WAKEUP_INT) { + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + mci_writel(host, CLKSEL64, clksel); + else + mci_writel(host, CLKSEL, clksel); + } return 0; } @@ -169,6 +190,7 @@ static int dw_mci_exynos_resume_noirq(struct device *dev) static void dw_mci_exynos_prepare_command(struct dw_mci *host, u32 *cmdr) { + struct dw_mci_exynos_priv_data *priv = host->priv; /* * Exynos4412 and Exynos5250 extends the use of CMD register with the * use of bit 29 (which is reserved on standard MSHC controllers) for @@ -176,8 +198,14 @@ static void dw_mci_exynos_prepare_command(struct dw_mci *host, u32 *cmdr) * HOLD register should be bypassed in case there is no phase shift * applied on CMD/DATA that is sent to the card. */ - if (SDMMC_CLKSEL_GET_DRV_WD3(mci_readl(host, CLKSEL))) - *cmdr |= SDMMC_CMD_USE_HOLD_REG; + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) { + if (SDMMC_CLKSEL_GET_DRV_WD3(mci_readl(host, CLKSEL64))) + *cmdr |= SDMMC_CMD_USE_HOLD_REG; + } else { + if (SDMMC_CLKSEL_GET_DRV_WD3(mci_readl(host, CLKSEL))) + *cmdr |= SDMMC_CMD_USE_HOLD_REG; + } } static void dw_mci_exynos_set_ios(struct dw_mci *host, struct mmc_ios *ios) @@ -188,12 +216,20 @@ static void dw_mci_exynos_set_ios(struct dw_mci *host, struct mmc_ios *ios) u8 div = priv->ciu_div + 1; if (ios->timing == MMC_TIMING_MMC_DDR52) { - mci_writel(host, CLKSEL, priv->ddr_timing); + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + mci_writel(host, CLKSEL64, priv->ddr_timing); + else + mci_writel(host, CLKSEL, priv->ddr_timing); /* Should be double rate for DDR mode */ if (ios->bus_width == MMC_BUS_WIDTH_8) wanted <<= 1; } else { - mci_writel(host, CLKSEL, priv->sdr_timing); + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + mci_writel(host, CLKSEL64, priv->sdr_timing); + else + mci_writel(host, CLKSEL, priv->sdr_timing); } /* Don't care if wanted clock is zero */ @@ -265,26 +301,51 @@ static int dw_mci_exynos_parse_dt(struct dw_mci *host) static inline u8 dw_mci_exynos_get_clksmpl(struct dw_mci *host) { - return SDMMC_CLKSEL_CCLK_SAMPLE(mci_readl(host, CLKSEL)); + struct dw_mci_exynos_priv_data *priv = host->priv; + + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + return SDMMC_CLKSEL_CCLK_SAMPLE(mci_readl(host, CLKSEL64)); + else + return SDMMC_CLKSEL_CCLK_SAMPLE(mci_readl(host, CLKSEL)); } static inline void dw_mci_exynos_set_clksmpl(struct dw_mci *host, u8 sample) { u32 clksel; - clksel = mci_readl(host, CLKSEL); + struct dw_mci_exynos_priv_data *priv = host->priv; + + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + clksel = mci_readl(host, CLKSEL64); + else + clksel = mci_readl(host, CLKSEL); clksel = (clksel & ~0x7) | SDMMC_CLKSEL_CCLK_SAMPLE(sample); - mci_writel(host, CLKSEL, clksel); + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + mci_writel(host, CLKSEL64, clksel); + else + mci_writel(host, CLKSEL, clksel); } static inline u8 dw_mci_exynos_move_next_clksmpl(struct dw_mci *host) { + struct dw_mci_exynos_priv_data *priv = host->priv; u32 clksel; u8 sample; - clksel = mci_readl(host, CLKSEL); + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + clksel = mci_readl(host, CLKSEL64); + else + clksel = mci_readl(host, CLKSEL); sample = (clksel + 1) & 0x7; clksel = (clksel & ~0x7) | sample; - mci_writel(host, CLKSEL, clksel); + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + mci_writel(host, CLKSEL64, clksel); + else + mci_writel(host, CLKSEL, clksel); return sample; } @@ -411,6 +472,10 @@ static const struct of_device_id dw_mci_exynos_match[] = { .data = &exynos_drv_data, }, { .compatible = "samsung,exynos5420-dw-mshc-smu", .data = &exynos_drv_data, }, + { .compatible = "samsung,exynos7-dw-mshc", + .data = &exynos_drv_data, }, + { .compatible = "samsung,exynos7-dw-mshc-smu", + .data = &exynos_drv_data, }, {}, }; MODULE_DEVICE_TABLE(of, dw_mci_exynos_match); -- 1.7.10.4
next reply other threads:[~2014-08-28 13:18 UTC|newest] Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-08-28 13:18 Yuvaraj Kumar C D [this message] 2014-08-28 13:18 ` [PATCH] mmc: dw_mmc: exynos: Add support for exynos7 Yuvaraj Kumar C D 2014-08-29 10:44 ` Jaehoon Chung 2014-08-29 10:44 ` Jaehoon Chung 2014-09-01 5:44 ` Abhilash Kesavan 2014-09-01 5:44 ` Abhilash Kesavan 2014-10-21 8:17 ` Vivek Gautam 2014-10-21 8:17 ` Vivek Gautam 2014-10-21 8:20 ` Vivek Gautam 2014-10-21 8:20 ` Vivek Gautam 2014-11-11 14:14 ` Alim Akhtar 2014-11-11 14:14 ` Alim Akhtar 2014-11-12 1:41 ` Jaehoon Chung 2014-11-12 1:41 ` Jaehoon Chung 2014-11-12 8:16 ` Ulf Hansson 2014-11-12 8:16 ` Ulf Hansson
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