| Message ID | 1337581868-3042-3-git-send-email-girish.shivananjappa@linaro.org |
|---|---|
| State | New |
| Headers | show |
On Mon, May 21, 2012 at 12:01 PM, Girish K S <girish.shivananjappa@linaro.org> wrote: > This patch adds platform support for ufs host controller > The SoC's that use non-pci probing should use this option. > > Signed-off-by: Girish K S <girish.shivananjappa@linaro.org> > --- > drivers/scsi/ufs/Kconfig | 13 +++ > drivers/scsi/ufs/Makefile | 1 + > drivers/scsi/ufs/ufshcd-pltfm.c | 180 +++++++++++++++++++++++++++++++++++++++ > 3 files changed, 194 insertions(+), 0 deletions(-) > create mode 100644 drivers/scsi/ufs/ufshcd-pltfm.c > > diff --git a/drivers/scsi/ufs/Kconfig b/drivers/scsi/ufs/Kconfig > index 2a70972..dae5428 100644 > --- a/drivers/scsi/ufs/Kconfig > +++ b/drivers/scsi/ufs/Kconfig > @@ -60,3 +60,16 @@ config SCSI_UFSHCD_PCI > If you have a controller with this interface, say Y or M here. > > If unsure, say N. > + > +config SCSI_UFSHCD_PLTFM > + tristate "Universal Flash Storage host support as platform device" > + depends on SCSI_UFSHCD > + help > + This selects the common helper functions support for Host Controller > + Interface based platform driver. Please select this option if the IP > + is present as a platform device. This is the common interface for the > + UFS Host Controller IP. > + > + If you have a controller with this interface, say Y or M here. > + > + If unsure, say N. > diff --git a/drivers/scsi/ufs/Makefile b/drivers/scsi/ufs/Makefile > index 9eda0df..fc56471 100644 > --- a/drivers/scsi/ufs/Makefile > +++ b/drivers/scsi/ufs/Makefile > @@ -1,3 +1,4 @@ > # UFSHCD makefile > obj-$(CONFIG_SCSI_UFSHCD) += ufshcd.o > obj-$(CONFIG_SCSI_UFSHCD_PCI) += ufshcd-pci.o > +obj-$(CONFIG_SCSI_UFSHCD_PLTFM) += ufshcd-pltfm.o > diff --git a/drivers/scsi/ufs/ufshcd-pltfm.c b/drivers/scsi/ufs/ufshcd-pltfm.c > new file mode 100644 > index 0000000..7558210 > --- /dev/null > +++ b/drivers/scsi/ufs/ufshcd-pltfm.c > @@ -0,0 +1,180 @@ > +/* > + * Universal Flash Storage Host controller driver > + * > + * This code is based on drivers/scsi/ufs/ufshcd.c > + * Copyright (C) 2011-2012 Samsung India Software Operations > + * > + * This program is free software; you can redistribute it and/or > + * modify it under the terms of the GNU General Public License > + * as published by the Free Software Foundation; either version 2 > + * of the License, or (at your option) any later version. > + * > + * 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. > + * > + * NO WARRANTY > + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR > + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT > + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, > + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is > + * solely responsible for determining the appropriateness of using and > + * distributing the Program and assumes all risks associated with its > + * exercise of rights under this Agreement, including but not limited to > + * the risks and costs of program errors, damage to or loss of data, > + * programs or equipment, and unavailability or interruption of operations. > + > + * DISCLAIMER OF LIABILITY > + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY > + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL > + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND > + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR > + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE > + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED > + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES > + > + * You should have received a copy of the GNU General Public License > + * along with this program; if not, write to the Free Software > + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, > + * USA. > + */ > + > +#include <linux/interrupt.h> > +#include <linux/module.h> > +#include <linux/io.h> > +#include <linux/irq.h> > +#include <linux/platform_device.h> > +#include <linux/slab.h> > +#include <linux/dma-mapping.h> > +#include <scsi/scsi_host.h> > + > +#include "ufs.h" > +#include "ufshci.h" > + > +/** > + * ufshcd_pltfmset_dma_mask - Set dma mask based on the controller > + * addressing capability > + * @ihba: pointer to host platform data > + * > + * Returns 0 for success, non-zero for failure > + */ > +static int ufshcd_pltfm_set_dma_mask(struct platform_device *pdev) > +{ > + int err; > + u64 dma_mask; > + > + dma_mask = DMA_BIT_MASK(64); > + err = dma_set_coherent_mask(&pdev->dev, dma_mask); > + if (err) { > + dma_mask = DMA_BIT_MASK(32); > + err = dma_set_coherent_mask(&pdev->dev, dma_mask); > + } > + > + return err; > +} > + > +static int __devinit ufshcd_pltfm_probe(struct platform_device *pdev) > +{ > + struct ufs_hba *uninitialized_var(hba); > + struct resource *regs; > + int err, irq; > + void __iomem *mmio_base; > + > + regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); > + if (!regs) > + return -ENXIO; > + > + irq = platform_get_irq(pdev, 0); > + if (irq < 0) > + return irq; > + > + mmio_base = ioremap(regs->start, resource_size(regs)); > + if (!mmio_base) > + return -ENOMEM; > + > + err = ufshcd_pltfm_set_dma_mask(pdev); > + if (err) { > + dev_err(&pdev->dev, "set dma mask failed\n"); > + goto err_iounmap; > + } > + > + err = ufshcd_drv_init(&hba, &pdev->dev, irq, mmio_base); > + if (err) > + goto err_iounmap; > + > + platform_set_drvdata(pdev, hba); > + > + /* Initialization routine */ > + err = ufshcd_initialize_hba(hba); > + if (err) { > + dev_err(&hba->dev, "Initialization failed\n"); > + goto err_remove; > + } > + > + return err; > + > +err_remove: > + ufshcd_drv_exit(hba); > +err_iounmap: > + iounmap(hba->mmio_base); > + return err; > +} > + > +static int __devexit ufshcd_pltfm_remove(struct platform_device *pdev) > +{ > + struct ufs_hba *hba = platform_get_drvdata(pdev); > + > + ufshcd_drv_exit(hba); > + iounmap(hba->mmio_base); > + platform_set_drvdata(pdev, NULL); > + return 0; > +} > + > +#ifdef CONFIG_PM > +static int ufshcd_pltfm_suspend(struct device *dev) > +{ > + int ret; > + struct ufs_hba *hba = dev_get_drvdata(dev); > + > + ret = ufshcd_suspend(hba); > + if (ret) > + return ret; The above 2 lines are redundant... > + > + return 0; .. if you simply do a "return ret" here... > +} > + > +static int ufshcd_pltfm_resume(struct device *dev) > +{ > + int ret; > + struct ufs_hba *hba = dev_get_drvdata(dev); > + > + ret = ufshcd_resume(hba); > + if (ret) > + return ret; .. ditto > + > + return 0; > +} > +#else > +#define ufshcd_pltfm_suspend NULL > +#define ufshcd_pltfm_resume NULL > +#endif /* CONFIG_PM */ > + > +static SIMPLE_DEV_PM_OPS(ufshcd_pltfm_pmops, > + ufshcd_pltfm_suspend, > + ufshcd_pltfm_resume); > + > +static struct platform_driver ufshcd_pltfm_driver = { > + .probe = ufshcd_pltfm_probe, > + .remove = __devexit_p(ufshcd_pltfm_remove), > + .driver = { > + .name = "ufshcd-pltfm", > + .pm = &ufshcd_pltfm_pmops, > + }, > +}; > + > +module_platform_driver(ufshcd_pltfm_driver); > + > +MODULE_DESCRIPTION("UFS Host Controller platform Interface driver"); > +MODULE_AUTHOR("Girish K S <ks.giri@samsung.com>"); > +MODULE_LICENSE("GPL"); > -- > 1.7.4.1 >
On 22 May 2012 11:07, S, Venkatraman <svenkatr@ti.com> wrote: > On Mon, May 21, 2012 at 12:01 PM, Girish K S > <girish.shivananjappa@linaro.org> wrote: >> This patch adds platform support for ufs host controller >> The SoC's that use non-pci probing should use this option. >> >> Signed-off-by: Girish K S <girish.shivananjappa@linaro.org> >> --- >> drivers/scsi/ufs/Kconfig | 13 +++ >> drivers/scsi/ufs/Makefile | 1 + >> drivers/scsi/ufs/ufshcd-pltfm.c | 180 +++++++++++++++++++++++++++++++++++++++ >> 3 files changed, 194 insertions(+), 0 deletions(-) >> create mode 100644 drivers/scsi/ufs/ufshcd-pltfm.c >> >> diff --git a/drivers/scsi/ufs/Kconfig b/drivers/scsi/ufs/Kconfig >> index 2a70972..dae5428 100644 >> --- a/drivers/scsi/ufs/Kconfig >> +++ b/drivers/scsi/ufs/Kconfig >> @@ -60,3 +60,16 @@ config SCSI_UFSHCD_PCI >> If you have a controller with this interface, say Y or M here. >> >> If unsure, say N. >> + >> +config SCSI_UFSHCD_PLTFM >> + tristate "Universal Flash Storage host support as platform device" >> + depends on SCSI_UFSHCD >> + help >> + This selects the common helper functions support for Host Controller >> + Interface based platform driver. Please select this option if the IP >> + is present as a platform device. This is the common interface for the >> + UFS Host Controller IP. >> + >> + If you have a controller with this interface, say Y or M here. >> + >> + If unsure, say N. >> diff --git a/drivers/scsi/ufs/Makefile b/drivers/scsi/ufs/Makefile >> index 9eda0df..fc56471 100644 >> --- a/drivers/scsi/ufs/Makefile >> +++ b/drivers/scsi/ufs/Makefile >> @@ -1,3 +1,4 @@ >> # UFSHCD makefile >> obj-$(CONFIG_SCSI_UFSHCD) += ufshcd.o >> obj-$(CONFIG_SCSI_UFSHCD_PCI) += ufshcd-pci.o >> +obj-$(CONFIG_SCSI_UFSHCD_PLTFM) += ufshcd-pltfm.o >> diff --git a/drivers/scsi/ufs/ufshcd-pltfm.c b/drivers/scsi/ufs/ufshcd-pltfm.c >> new file mode 100644 >> index 0000000..7558210 >> --- /dev/null >> +++ b/drivers/scsi/ufs/ufshcd-pltfm.c >> @@ -0,0 +1,180 @@ >> +/* >> + * Universal Flash Storage Host controller driver >> + * >> + * This code is based on drivers/scsi/ufs/ufshcd.c >> + * Copyright (C) 2011-2012 Samsung India Software Operations >> + * >> + * This program is free software; you can redistribute it and/or >> + * modify it under the terms of the GNU General Public License >> + * as published by the Free Software Foundation; either version 2 >> + * of the License, or (at your option) any later version. >> + * >> + * 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. >> + * >> + * NO WARRANTY >> + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR >> + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT >> + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, >> + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is >> + * solely responsible for determining the appropriateness of using and >> + * distributing the Program and assumes all risks associated with its >> + * exercise of rights under this Agreement, including but not limited to >> + * the risks and costs of program errors, damage to or loss of data, >> + * programs or equipment, and unavailability or interruption of operations. >> + >> + * DISCLAIMER OF LIABILITY >> + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY >> + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL >> + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND >> + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR >> + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE >> + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED >> + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES >> + >> + * You should have received a copy of the GNU General Public License >> + * along with this program; if not, write to the Free Software >> + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, >> + * USA. >> + */ >> + >> +#include <linux/interrupt.h> >> +#include <linux/module.h> >> +#include <linux/io.h> >> +#include <linux/irq.h> >> +#include <linux/platform_device.h> >> +#include <linux/slab.h> >> +#include <linux/dma-mapping.h> >> +#include <scsi/scsi_host.h> >> + >> +#include "ufs.h" >> +#include "ufshci.h" >> + >> +/** >> + * ufshcd_pltfmset_dma_mask - Set dma mask based on the controller >> + * addressing capability >> + * @ihba: pointer to host platform data >> + * >> + * Returns 0 for success, non-zero for failure >> + */ >> +static int ufshcd_pltfm_set_dma_mask(struct platform_device *pdev) >> +{ >> + int err; >> + u64 dma_mask; >> + >> + dma_mask = DMA_BIT_MASK(64); >> + err = dma_set_coherent_mask(&pdev->dev, dma_mask); >> + if (err) { >> + dma_mask = DMA_BIT_MASK(32); >> + err = dma_set_coherent_mask(&pdev->dev, dma_mask); >> + } >> + >> + return err; >> +} >> + >> +static int __devinit ufshcd_pltfm_probe(struct platform_device *pdev) >> +{ >> + struct ufs_hba *uninitialized_var(hba); >> + struct resource *regs; >> + int err, irq; >> + void __iomem *mmio_base; >> + >> + regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); >> + if (!regs) >> + return -ENXIO; >> + >> + irq = platform_get_irq(pdev, 0); >> + if (irq < 0) >> + return irq; >> + >> + mmio_base = ioremap(regs->start, resource_size(regs)); >> + if (!mmio_base) >> + return -ENOMEM; >> + >> + err = ufshcd_pltfm_set_dma_mask(pdev); >> + if (err) { >> + dev_err(&pdev->dev, "set dma mask failed\n"); >> + goto err_iounmap; >> + } >> + >> + err = ufshcd_drv_init(&hba, &pdev->dev, irq, mmio_base); >> + if (err) >> + goto err_iounmap; >> + >> + platform_set_drvdata(pdev, hba); >> + >> + /* Initialization routine */ >> + err = ufshcd_initialize_hba(hba); >> + if (err) { >> + dev_err(&hba->dev, "Initialization failed\n"); >> + goto err_remove; >> + } >> + >> + return err; >> + >> +err_remove: >> + ufshcd_drv_exit(hba); >> +err_iounmap: >> + iounmap(hba->mmio_base); >> + return err; >> +} >> + >> +static int __devexit ufshcd_pltfm_remove(struct platform_device *pdev) >> +{ >> + struct ufs_hba *hba = platform_get_drvdata(pdev); >> + >> + ufshcd_drv_exit(hba); >> + iounmap(hba->mmio_base); >> + platform_set_drvdata(pdev, NULL); >> + return 0; >> +} >> + >> +#ifdef CONFIG_PM >> +static int ufshcd_pltfm_suspend(struct device *dev) >> +{ >> + int ret; >> + struct ufs_hba *hba = dev_get_drvdata(dev); >> + >> + ret = ufshcd_suspend(hba); >> + if (ret) >> + return ret; > The above 2 lines are redundant... agreed. >> + >> + return 0; > .. if you simply do a "return ret" here... > >> +} >> + >> +static int ufshcd_pltfm_resume(struct device *dev) >> +{ >> + int ret; >> + struct ufs_hba *hba = dev_get_drvdata(dev); >> + >> + ret = ufshcd_resume(hba); >> + if (ret) >> + return ret; > > .. ditto >> + >> + return 0; >> +} >> +#else >> +#define ufshcd_pltfm_suspend NULL >> +#define ufshcd_pltfm_resume NULL >> +#endif /* CONFIG_PM */ >> + >> +static SIMPLE_DEV_PM_OPS(ufshcd_pltfm_pmops, >> + ufshcd_pltfm_suspend, >> + ufshcd_pltfm_resume); >> + >> +static struct platform_driver ufshcd_pltfm_driver = { >> + .probe = ufshcd_pltfm_probe, >> + .remove = __devexit_p(ufshcd_pltfm_remove), >> + .driver = { >> + .name = "ufshcd-pltfm", >> + .pm = &ufshcd_pltfm_pmops, >> + }, >> +}; >> + >> +module_platform_driver(ufshcd_pltfm_driver); >> + >> +MODULE_DESCRIPTION("UFS Host Controller platform Interface driver"); >> +MODULE_AUTHOR("Girish K S <ks.giri@samsung.com>"); >> +MODULE_LICENSE("GPL"); >> -- >> 1.7.4.1 >>
diff --git a/drivers/scsi/ufs/Kconfig b/drivers/scsi/ufs/Kconfig index 2a70972..dae5428 100644 --- a/drivers/scsi/ufs/Kconfig +++ b/drivers/scsi/ufs/Kconfig @@ -60,3 +60,16 @@ config SCSI_UFSHCD_PCI If you have a controller with this interface, say Y or M here. If unsure, say N. + +config SCSI_UFSHCD_PLTFM + tristate "Universal Flash Storage host support as platform device" + depends on SCSI_UFSHCD + help + This selects the common helper functions support for Host Controller + Interface based platform driver. Please select this option if the IP + is present as a platform device. This is the common interface for the + UFS Host Controller IP. + + If you have a controller with this interface, say Y or M here. + + If unsure, say N. diff --git a/drivers/scsi/ufs/Makefile b/drivers/scsi/ufs/Makefile index 9eda0df..fc56471 100644 --- a/drivers/scsi/ufs/Makefile +++ b/drivers/scsi/ufs/Makefile @@ -1,3 +1,4 @@ # UFSHCD makefile obj-$(CONFIG_SCSI_UFSHCD) += ufshcd.o obj-$(CONFIG_SCSI_UFSHCD_PCI) += ufshcd-pci.o +obj-$(CONFIG_SCSI_UFSHCD_PLTFM) += ufshcd-pltfm.o diff --git a/drivers/scsi/ufs/ufshcd-pltfm.c b/drivers/scsi/ufs/ufshcd-pltfm.c new file mode 100644 index 0000000..7558210 --- /dev/null +++ b/drivers/scsi/ufs/ufshcd-pltfm.c @@ -0,0 +1,180 @@ +/* + * Universal Flash Storage Host controller driver + * + * This code is based on drivers/scsi/ufs/ufshcd.c + * Copyright (C) 2011-2012 Samsung India Software Operations + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * 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. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + */ + +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/dma-mapping.h> +#include <scsi/scsi_host.h> + +#include "ufs.h" +#include "ufshci.h" + +/** + * ufshcd_pltfmset_dma_mask - Set dma mask based on the controller + * addressing capability + * @ihba: pointer to host platform data + * + * Returns 0 for success, non-zero for failure + */ +static int ufshcd_pltfm_set_dma_mask(struct platform_device *pdev) +{ + int err; + u64 dma_mask; + + dma_mask = DMA_BIT_MASK(64); + err = dma_set_coherent_mask(&pdev->dev, dma_mask); + if (err) { + dma_mask = DMA_BIT_MASK(32); + err = dma_set_coherent_mask(&pdev->dev, dma_mask); + } + + return err; +} + +static int __devinit ufshcd_pltfm_probe(struct platform_device *pdev) +{ + struct ufs_hba *uninitialized_var(hba); + struct resource *regs; + int err, irq; + void __iomem *mmio_base; + + regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!regs) + return -ENXIO; + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + + mmio_base = ioremap(regs->start, resource_size(regs)); + if (!mmio_base) + return -ENOMEM; + + err = ufshcd_pltfm_set_dma_mask(pdev); + if (err) { + dev_err(&pdev->dev, "set dma mask failed\n"); + goto err_iounmap; + } + + err = ufshcd_drv_init(&hba, &pdev->dev, irq, mmio_base); + if (err) + goto err_iounmap; + + platform_set_drvdata(pdev, hba); + + /* Initialization routine */ + err = ufshcd_initialize_hba(hba); + if (err) { + dev_err(&hba->dev, "Initialization failed\n"); + goto err_remove; + } + + return err; + +err_remove: + ufshcd_drv_exit(hba); +err_iounmap: + iounmap(hba->mmio_base); + return err; +} + +static int __devexit ufshcd_pltfm_remove(struct platform_device *pdev) +{ + struct ufs_hba *hba = platform_get_drvdata(pdev); + + ufshcd_drv_exit(hba); + iounmap(hba->mmio_base); + platform_set_drvdata(pdev, NULL); + return 0; +} + +#ifdef CONFIG_PM +static int ufshcd_pltfm_suspend(struct device *dev) +{ + int ret; + struct ufs_hba *hba = dev_get_drvdata(dev); + + ret = ufshcd_suspend(hba); + if (ret) + return ret; + + return 0; +} + +static int ufshcd_pltfm_resume(struct device *dev) +{ + int ret; + struct ufs_hba *hba = dev_get_drvdata(dev); + + ret = ufshcd_resume(hba); + if (ret) + return ret; + + return 0; +} +#else +#define ufshcd_pltfm_suspend NULL +#define ufshcd_pltfm_resume NULL +#endif /* CONFIG_PM */ + +static SIMPLE_DEV_PM_OPS(ufshcd_pltfm_pmops, + ufshcd_pltfm_suspend, + ufshcd_pltfm_resume); + +static struct platform_driver ufshcd_pltfm_driver = { + .probe = ufshcd_pltfm_probe, + .remove = __devexit_p(ufshcd_pltfm_remove), + .driver = { + .name = "ufshcd-pltfm", + .pm = &ufshcd_pltfm_pmops, + }, +}; + +module_platform_driver(ufshcd_pltfm_driver); + +MODULE_DESCRIPTION("UFS Host Controller platform Interface driver"); +MODULE_AUTHOR("Girish K S <ks.giri@samsung.com>"); +MODULE_LICENSE("GPL");
This patch adds platform support for ufs host controller The SoC's that use non-pci probing should use this option. Signed-off-by: Girish K S <girish.shivananjappa@linaro.org> --- drivers/scsi/ufs/Kconfig | 13 +++ drivers/scsi/ufs/Makefile | 1 + drivers/scsi/ufs/ufshcd-pltfm.c | 180 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 194 insertions(+), 0 deletions(-) create mode 100644 drivers/scsi/ufs/ufshcd-pltfm.c