diff options
Diffstat (limited to 'target/linux/ipq806x/patches/0142-ata-Add-Qualcomm-ARM-SoC-AHCI-SATA-host-controller-d.patch')
| -rw-r--r-- | target/linux/ipq806x/patches/0142-ata-Add-Qualcomm-ARM-SoC-AHCI-SATA-host-controller-d.patch | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches/0142-ata-Add-Qualcomm-ARM-SoC-AHCI-SATA-host-controller-d.patch b/target/linux/ipq806x/patches/0142-ata-Add-Qualcomm-ARM-SoC-AHCI-SATA-host-controller-d.patch new file mode 100644 index 0000000000..678a33f472 --- /dev/null +++ b/target/linux/ipq806x/patches/0142-ata-Add-Qualcomm-ARM-SoC-AHCI-SATA-host-controller-d.patch @@ -0,0 +1,146 @@ +From c5ea64dcf7b5d45e402e78b9f291d521669b7b80 Mon Sep 17 00:00:00 2001 +From: Kumar Gala <galak@codeaurora.org> +Date: Fri, 30 May 2014 15:35:40 -0500 +Subject: [PATCH 142/182] ata: Add Qualcomm ARM SoC AHCI SATA host controller + driver + +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 + +diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig +index dc950f3..da05034 100644 +--- a/drivers/ata/Kconfig ++++ b/drivers/ata/Kconfig +@@ -106,6 +106,16 @@ config AHCI_IMX + + 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 SATA_FSL + tristate "Freescale 3.0Gbps SATA support" + depends on FSL_SOC +diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile +index 366b743..e08044f 100644 +--- a/drivers/ata/Makefile ++++ b/drivers/ata/Makefile +@@ -11,6 +11,7 @@ obj-$(CONFIG_SATA_SIL24) += sata_sil24.o + obj-$(CONFIG_SATA_DWC) += sata_dwc_460ex.o + obj-$(CONFIG_SATA_HIGHBANK) += sata_highbank.o libahci.o + obj-$(CONFIG_AHCI_IMX) += ahci_imx.o libahci.o libahci_platform.o ++obj-$(CONFIG_AHCI_QCOM) += ahci_qcom.o libahci.o libahci_platform.o + + # SFF w/ custom DMA + obj-$(CONFIG_PDC_ADMA) += pdc_adma.o +diff --git a/drivers/ata/ahci_qcom.c b/drivers/ata/ahci_qcom.c +new file mode 100644 +index 0000000..bfb7a77 +--- /dev/null ++++ b/drivers/ata/ahci_qcom.c +@@ -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 v2"); ++MODULE_ALIAS("ahci:qcom"); +-- +1.7.10.4 + |