@@ -132,6 +132,16 @@ config AHCI_MVEBU
If unsure, say N.
+config AHCI_QCOM
+ tristate "Qualcomm AHCI SATA support"
+ depends on ARCH_QCOM
+ help
+ This option enables support for AHCI SATA controller
+ integrated into Qualcomm ARM SoC chipsets. For more
+ information please refer to http://www.qualcomm.com/chipsets.
+
+ If unsure, say N.
+
config AHCI_SUNXI
tristate "Allwinner sunxi AHCI SATA support"
depends on ARCH_SUNXI
@@ -13,6 +13,7 @@ obj-$(CONFIG_SATA_HIGHBANK) += sata_highbank.o libahci.o
obj-$(CONFIG_AHCI_DA850) += ahci_da850.o libahci.o libahci_platform.o
obj-$(CONFIG_AHCI_IMX) += ahci_imx.o libahci.o libahci_platform.o
obj-$(CONFIG_AHCI_MVEBU) += ahci_mvebu.o libahci.o libahci_platform.o
+obj-$(CONFIG_AHCI_QCOM) += ahci_qcom.o libahci.o libahci_platform.o
obj-$(CONFIG_AHCI_SUNXI) += ahci_sunxi.o libahci.o libahci_platform.o
obj-$(CONFIG_AHCI_ST) += ahci_st.o libahci.o libahci_platform.o
obj-$(CONFIG_AHCI_XGENE) += ahci_xgene.o libahci.o libahci_platform.o
new file mode 100644
@@ -0,0 +1,86 @@
+/*
+ * Qualcomm ARM SoC AHCI SATA platform driver
+ *
+ * based on the AHCI SATA platform driver by Jeff Garzik and Anton Vorontsov
+ *
+ * Copyright (c) 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/kernel.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/libata.h>
+#include <linux/ahci_platform.h>
+#include "ahci.h"
+
+static const struct ata_port_info qcom_ahci_port_info = {
+ .flags = AHCI_FLAG_COMMON,
+ .pio_mask = ATA_PIO4,
+ .udma_mask = ATA_UDMA6,
+ .port_ops = &ahci_platform_ops,
+};
+
+static int qcom_ahci_probe(struct platform_device *pdev)
+{
+ struct ahci_host_priv *hpriv;
+ struct clk *rxoob_clk;
+ int rc;
+
+ hpriv = ahci_platform_get_resources(pdev);
+ if (IS_ERR(hpriv))
+ return PTR_ERR(hpriv);
+
+ /* Try and set the rxoob clk to 100Mhz */
+ rxoob_clk = of_clk_get_by_name(pdev->dev.of_node, "rxoob");
+ if (IS_ERR(rxoob_clk))
+ return PTR_ERR(rxoob_clk);
+
+ rc = clk_set_rate(rxoob_clk, 100000000);
+ if (rc)
+ return rc;
+
+ rc = ahci_platform_enable_resources(hpriv);
+ if (rc)
+ return rc;
+
+ rc = ahci_platform_init_host(pdev, hpriv, &qcom_ahci_port_info, 0, 0);
+ if (rc)
+ goto disable_resources;
+
+ return 0;
+disable_resources:
+ ahci_platform_disable_resources(hpriv);
+ return rc;
+}
+
+static const struct of_device_id qcom_ahci_of_match[] = {
+ { .compatible = "qcom,msm-ahci", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, qcom_ahci_of_match);
+
+static struct platform_driver qcom_ahci_driver = {
+ .probe = qcom_ahci_probe,
+ .remove = ata_platform_remove_one,
+ .driver = {
+ .name = "qcom_ahci_qcom",
+ .owner = THIS_MODULE,
+ .of_match_table = qcom_ahci_of_match,
+ },
+};
+module_platform_driver(qcom_ahci_driver);
+
+MODULE_DESCRIPTION("Qualcomm AHCI SATA platform driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("ahci:qcom");
Add support for the Qualcomm AHCI SATA controller that exists on several SoC and specifically the IPQ806x family of chips. The IPQ806x SATA support requires the associated IPQ806x SATA PHY Driver to be enabled as well. Signed-off-by: Kumar Gala <galak@codeaurora.org> --- drivers/ata/Kconfig | 10 ++++++ drivers/ata/Makefile | 1 + drivers/ata/ahci_qcom.c | 86 +++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 97 insertions(+) create mode 100644 drivers/ata/ahci_qcom.c