diff options
Diffstat (limited to 'target/linux/ipq806x/patches/0047-mmc-sdhci-msm-Initial-support-for-Qualcomm-chipsets.patch')
-rw-r--r-- | target/linux/ipq806x/patches/0047-mmc-sdhci-msm-Initial-support-for-Qualcomm-chipsets.patch | 265 |
1 files changed, 0 insertions, 265 deletions
diff --git a/target/linux/ipq806x/patches/0047-mmc-sdhci-msm-Initial-support-for-Qualcomm-chipsets.patch b/target/linux/ipq806x/patches/0047-mmc-sdhci-msm-Initial-support-for-Qualcomm-chipsets.patch deleted file mode 100644 index 9417e1d..0000000 --- a/target/linux/ipq806x/patches/0047-mmc-sdhci-msm-Initial-support-for-Qualcomm-chipsets.patch +++ /dev/null @@ -1,265 +0,0 @@ -From 5a8f026acb4a7a6c6d0c868cc1790363640b9b8f Mon Sep 17 00:00:00 2001 -From: Georgi Djakov <gdjakov@mm-sol.com> -Date: Mon, 10 Mar 2014 17:37:12 +0200 -Subject: [PATCH 047/182] mmc: sdhci-msm: Initial support for Qualcomm - chipsets - -This platform driver adds the initial support of Secure Digital Host -Controller Interface compliant controller found in Qualcomm chipsets. - -Signed-off-by: Asutosh Das <asutoshd@codeaurora.org> -Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org> -Tested-by: Ivan T. Ivanov <iivanov@mm-sol.com> -Signed-off-by: Georgi Djakov <gdjakov@mm-sol.com> -Acked-by: Ulf Hansson <ulf.hansson@linaro.org> -Signed-off-by: Chris Ball <chris@printf.net> ---- - drivers/mmc/host/Kconfig | 13 +++ - drivers/mmc/host/Makefile | 1 + - drivers/mmc/host/sdhci-msm.c | 208 ++++++++++++++++++++++++++++++++++++++++++ - 3 files changed, 222 insertions(+) - create mode 100644 drivers/mmc/host/sdhci-msm.c - ---- a/drivers/mmc/host/Kconfig -+++ b/drivers/mmc/host/Kconfig -@@ -334,6 +334,19 @@ config MMC_ATMELMCI - - If unsure, say N. - -+config MMC_SDHCI_MSM -+ tristate "Qualcomm SDHCI Controller Support" -+ depends on ARCH_QCOM -+ depends on MMC_SDHCI_PLTFM -+ help -+ This selects the Secure Digital Host Controller Interface (SDHCI) -+ support present in Qualcomm SOCs. The controller supports -+ SD/MMC/SDIO devices. -+ -+ If you have a controller with this interface, say Y or M here. -+ -+ If unsure, say N. -+ - config MMC_MSM - tristate "Qualcomm SDCC Controller Support" - depends on MMC && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50) ---- a/drivers/mmc/host/Makefile -+++ b/drivers/mmc/host/Makefile -@@ -65,6 +65,7 @@ obj-$(CONFIG_MMC_SDHCI_OF_ESDHC) += sdhc - obj-$(CONFIG_MMC_SDHCI_OF_HLWD) += sdhci-of-hlwd.o - obj-$(CONFIG_MMC_SDHCI_BCM_KONA) += sdhci-bcm-kona.o - obj-$(CONFIG_MMC_SDHCI_BCM2835) += sdhci-bcm2835.o -+obj-$(CONFIG_MMC_SDHCI_MSM) += sdhci-msm.o - - ifeq ($(CONFIG_CB710_DEBUG),y) - CFLAGS-cb710-mmc += -DDEBUG ---- /dev/null -+++ b/drivers/mmc/host/sdhci-msm.c -@@ -0,0 +1,208 @@ -+/* -+ * drivers/mmc/host/sdhci-msm.c - Qualcomm SDHCI Platform driver -+ * -+ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 and -+ * only version 2 as published by the Free Software Foundation. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ * -+ */ -+ -+#include <linux/module.h> -+#include <linux/of_device.h> -+#include <linux/regulator/consumer.h> -+#include <linux/delay.h> -+ -+#include "sdhci-pltfm.h" -+ -+#define CORE_HC_MODE 0x78 -+#define HC_MODE_EN 0x1 -+#define CORE_POWER 0x0 -+#define CORE_SW_RST BIT(7) -+ -+ -+struct sdhci_msm_host { -+ struct platform_device *pdev; -+ void __iomem *core_mem; /* MSM SDCC mapped address */ -+ struct clk *clk; /* main SD/MMC bus clock */ -+ struct clk *pclk; /* SDHC peripheral bus clock */ -+ struct clk *bus_clk; /* SDHC bus voter clock */ -+ struct mmc_host *mmc; -+ struct sdhci_pltfm_data sdhci_msm_pdata; -+}; -+ -+/* Platform specific tuning */ -+static int sdhci_msm_execute_tuning(struct sdhci_host *host, u32 opcode) -+{ -+ /* -+ * Tuning is required for SDR104, HS200 and HS400 cards and if the clock -+ * frequency greater than 100MHz in those modes. The standard tuning -+ * procedure should not be executed, but a custom implementation will be -+ * added here instead. -+ */ -+ return 0; -+} -+ -+static const struct of_device_id sdhci_msm_dt_match[] = { -+ { .compatible = "qcom,sdhci-msm-v4" }, -+ {}, -+}; -+ -+MODULE_DEVICE_TABLE(of, sdhci_msm_dt_match); -+ -+static struct sdhci_ops sdhci_msm_ops = { -+ .platform_execute_tuning = sdhci_msm_execute_tuning, -+}; -+ -+static int sdhci_msm_probe(struct platform_device *pdev) -+{ -+ struct sdhci_host *host; -+ struct sdhci_pltfm_host *pltfm_host; -+ struct sdhci_msm_host *msm_host; -+ struct resource *core_memres; -+ int ret; -+ u16 host_version; -+ -+ msm_host = devm_kzalloc(&pdev->dev, sizeof(*msm_host), GFP_KERNEL); -+ if (!msm_host) -+ return -ENOMEM; -+ -+ msm_host->sdhci_msm_pdata.ops = &sdhci_msm_ops; -+ host = sdhci_pltfm_init(pdev, &msm_host->sdhci_msm_pdata, 0); -+ if (IS_ERR(host)) -+ return PTR_ERR(host); -+ -+ pltfm_host = sdhci_priv(host); -+ pltfm_host->priv = msm_host; -+ msm_host->mmc = host->mmc; -+ msm_host->pdev = pdev; -+ -+ ret = mmc_of_parse(host->mmc); -+ if (ret) -+ goto pltfm_free; -+ -+ sdhci_get_of_property(pdev); -+ -+ /* Setup SDCC bus voter clock. */ -+ msm_host->bus_clk = devm_clk_get(&pdev->dev, "bus"); -+ if (!IS_ERR(msm_host->bus_clk)) { -+ /* Vote for max. clk rate for max. performance */ -+ ret = clk_set_rate(msm_host->bus_clk, INT_MAX); -+ if (ret) -+ goto pltfm_free; -+ ret = clk_prepare_enable(msm_host->bus_clk); -+ if (ret) -+ goto pltfm_free; -+ } -+ -+ /* Setup main peripheral bus clock */ -+ msm_host->pclk = devm_clk_get(&pdev->dev, "iface"); -+ if (IS_ERR(msm_host->pclk)) { -+ ret = PTR_ERR(msm_host->pclk); -+ dev_err(&pdev->dev, "Perpheral clk setup failed (%d)\n", ret); -+ goto bus_clk_disable; -+ } -+ -+ ret = clk_prepare_enable(msm_host->pclk); -+ if (ret) -+ goto bus_clk_disable; -+ -+ /* Setup SDC MMC clock */ -+ msm_host->clk = devm_clk_get(&pdev->dev, "core"); -+ if (IS_ERR(msm_host->clk)) { -+ ret = PTR_ERR(msm_host->clk); -+ dev_err(&pdev->dev, "SDC MMC clk setup failed (%d)\n", ret); -+ goto pclk_disable; -+ } -+ -+ ret = clk_prepare_enable(msm_host->clk); -+ if (ret) -+ goto pclk_disable; -+ -+ core_memres = platform_get_resource(pdev, IORESOURCE_MEM, 1); -+ msm_host->core_mem = devm_ioremap_resource(&pdev->dev, core_memres); -+ -+ if (IS_ERR(msm_host->core_mem)) { -+ dev_err(&pdev->dev, "Failed to remap registers\n"); -+ ret = PTR_ERR(msm_host->core_mem); -+ goto clk_disable; -+ } -+ -+ /* Reset the core and Enable SDHC mode */ -+ writel_relaxed(readl_relaxed(msm_host->core_mem + CORE_POWER) | -+ CORE_SW_RST, msm_host->core_mem + CORE_POWER); -+ -+ /* SW reset can take upto 10HCLK + 15MCLK cycles. (min 40us) */ -+ usleep_range(1000, 5000); -+ if (readl(msm_host->core_mem + CORE_POWER) & CORE_SW_RST) { -+ dev_err(&pdev->dev, "Stuck in reset\n"); -+ ret = -ETIMEDOUT; -+ goto clk_disable; -+ } -+ -+ /* Set HC_MODE_EN bit in HC_MODE register */ -+ writel_relaxed(HC_MODE_EN, (msm_host->core_mem + CORE_HC_MODE)); -+ -+ host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION; -+ host->quirks |= SDHCI_QUIRK_SINGLE_POWER_WRITE; -+ -+ host_version = readw_relaxed((host->ioaddr + SDHCI_HOST_VERSION)); -+ dev_dbg(&pdev->dev, "Host Version: 0x%x Vendor Version 0x%x\n", -+ host_version, ((host_version & SDHCI_VENDOR_VER_MASK) >> -+ SDHCI_VENDOR_VER_SHIFT)); -+ -+ ret = sdhci_add_host(host); -+ if (ret) -+ goto clk_disable; -+ -+ return 0; -+ -+clk_disable: -+ clk_disable_unprepare(msm_host->clk); -+pclk_disable: -+ clk_disable_unprepare(msm_host->pclk); -+bus_clk_disable: -+ if (!IS_ERR(msm_host->bus_clk)) -+ clk_disable_unprepare(msm_host->bus_clk); -+pltfm_free: -+ sdhci_pltfm_free(pdev); -+ return ret; -+} -+ -+static int sdhci_msm_remove(struct platform_device *pdev) -+{ -+ struct sdhci_host *host = platform_get_drvdata(pdev); -+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); -+ struct sdhci_msm_host *msm_host = pltfm_host->priv; -+ int dead = (readl_relaxed(host->ioaddr + SDHCI_INT_STATUS) == -+ 0xffffffff); -+ -+ sdhci_remove_host(host, dead); -+ sdhci_pltfm_free(pdev); -+ clk_disable_unprepare(msm_host->clk); -+ clk_disable_unprepare(msm_host->pclk); -+ if (!IS_ERR(msm_host->bus_clk)) -+ clk_disable_unprepare(msm_host->bus_clk); -+ return 0; -+} -+ -+static struct platform_driver sdhci_msm_driver = { -+ .probe = sdhci_msm_probe, -+ .remove = sdhci_msm_remove, -+ .driver = { -+ .name = "sdhci_msm", -+ .owner = THIS_MODULE, -+ .of_match_table = sdhci_msm_dt_match, -+ }, -+}; -+ -+module_platform_driver(sdhci_msm_driver); -+ -+MODULE_DESCRIPTION("Qualcomm Secure Digital Host Controller Interface driver"); -+MODULE_LICENSE("GPL v2"); |