[RFC PATCH 1/2] usb: gadget: fsl_udc: Add support for zynq usb device controller
From: Punnaiah Choudary Kalluri <hidden>
Date: 2014-04-20 16:27:19
Also in:
linuxppc-dev, lkml
Subsystem:
the rest, usb subsystem · Maintainers:
Linus Torvalds, Greg Kroah-Hartman
Possibly related (same subject, not in this thread)
- 2014-04-20 · [RFC PATCH 1/2] usb: gadget: fsl_udc: Add support for zynq usb device controller · Punnaiah Choudary Kalluri <hidden>
Since zynq soc usb controller is a synopsys IP and there is a driver available for this controller from freescale in opensource, reusing this driver for zynq use. Signed-off-by: Punnaiah Choudary Kalluri <redacted> --- drivers/usb/gadget/Kconfig | 2 +- drivers/usb/gadget/Makefile | 1 + drivers/usb/gadget/fsl_mxc_udc.c | 21 +++++++++++++++++++++ drivers/usb/gadget/fsl_udc_core.c | 5 +++++ drivers/usb/gadget/fsl_usb2_udc.h | 2 +- drivers/usb/host/fsl-mph-dr-of.c | 9 +++++++++ 6 files changed, 38 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 3557c7e..7f18ab47 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig@@ -186,7 +186,7 @@ config USB_BCM63XX_UDC config USB_FSL_USB2 tristate "Freescale Highspeed USB DR Peripheral Controller" - depends on FSL_SOC || ARCH_MXC + depends on FSL_SOC || ARCH_MXC || ARCH_ZYNQ select USB_FSL_MPH_DR_OF if OF help Some of Freescale PowerPC and i.MX processors have a High Speed
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 5f150bc..38b009f 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile@@ -23,6 +23,7 @@ obj-$(CONFIG_USB_BCM63XX_UDC) += bcm63xx_udc.o obj-$(CONFIG_USB_FSL_USB2) += fsl_usb2_udc.o fsl_usb2_udc-y := fsl_udc_core.o fsl_usb2_udc-$(CONFIG_ARCH_MXC) += fsl_mxc_udc.o +fsl_usb2_udc-$(CONFIG_ARCH_ZYNQ) += fsl_mxc_udc.o obj-$(CONFIG_USB_M66592) += m66592-udc.o obj-$(CONFIG_USB_R8A66597) += r8a66597-udc.o obj-$(CONFIG_USB_FSL_QE) += fsl_qe_udc.o
diff --git a/drivers/usb/gadget/fsl_mxc_udc.c b/drivers/usb/gadget/fsl_mxc_udc.c
index 9b140fc..181245c 100644
--- a/drivers/usb/gadget/fsl_mxc_udc.c
+++ b/drivers/usb/gadget/fsl_mxc_udc.c@@ -19,8 +19,10 @@ #include <linux/io.h> static struct clk *mxc_ahb_clk; +#ifndef CONFIG_ARCH_ZYNQ static struct clk *mxc_per_clk; static struct clk *mxc_ipg_clk; +#endif /* workaround ENGcm09152 for i.MX35 */ #define MX35_USBPHYCTRL_OFFSET 0x600
@@ -30,6 +32,7 @@ static struct clk *mxc_ipg_clk; int fsl_udc_clk_init(struct platform_device *pdev) { struct fsl_usb2_platform_data *pdata; +#ifndef CONFIG_ARCH_ZYNQ unsigned long freq; int ret;
@@ -76,10 +79,21 @@ eclkrate: clk_disable_unprepare(mxc_per_clk); mxc_per_clk = NULL; return ret; +#else + pdata = dev_get_platdata(&pdev->dev); + mxc_ahb_clk = devm_clk_get(pdev->dev.parent, NULL); + if (IS_ERR(mxc_ahb_clk)) + return PTR_ERR(mxc_ahb_clk); + + clk_prepare_enable(mxc_ahb_clk); + + return 0; +#endif } int fsl_udc_clk_finalize(struct platform_device *pdev) { +#ifndef CONFIG_ARCH_ZYNQ struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); int ret = 0;
@@ -112,12 +126,19 @@ ioremap_err: } return ret; +#else + return 0; +#endif } void fsl_udc_clk_release(void) { +#ifndef CONFIG_ARCH_ZYNQ if (mxc_per_clk) clk_disable_unprepare(mxc_per_clk); clk_disable_unprepare(mxc_ahb_clk); clk_disable_unprepare(mxc_ipg_clk); +#else + clk_disable_unprepare(mxc_ahb_clk); +#endif }
diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c
index 15960af..c3ff3fb 100644
--- a/drivers/usb/gadget/fsl_udc_core.c
+++ b/drivers/usb/gadget/fsl_udc_core.c@@ -2492,6 +2492,9 @@ static int __init fsl_udc_probe(struct platform_device *pdev) goto err_free_irq; } +#ifdef CONFIG_ARCH_ZYNQ + udc_controller->vbus_active = 1; +#endif ret = usb_add_gadget_udc_release(&pdev->dev, &udc_controller->gadget, fsl_udc_release); if (ret)
@@ -2661,8 +2664,10 @@ static const struct platform_device_id fsl_udc_devtype[] = { MODULE_DEVICE_TABLE(platform, fsl_udc_devtype); static struct platform_driver udc_driver = { .remove = __exit_p(fsl_udc_remove), +#ifndef CONFIG_ARCH_ZYNQ /* Just for FSL i.mx SoC currently */ .id_table = fsl_udc_devtype, +#endif /* these suspend and resume are not usb suspend and resume */ .suspend = fsl_udc_suspend, .resume = fsl_udc_resume,
diff --git a/drivers/usb/gadget/fsl_usb2_udc.h b/drivers/usb/gadget/fsl_usb2_udc.h
index c6703bb..6394138 100644
--- a/drivers/usb/gadget/fsl_usb2_udc.h
+++ b/drivers/usb/gadget/fsl_usb2_udc.h@@ -590,7 +590,7 @@ static inline struct ep_queue_head *get_qh_by_ep(struct fsl_ep *ep) } struct platform_device; -#ifdef CONFIG_ARCH_MXC +#if defined CONFIG_ARCH_MXC || defined CONFIG_ARCH_ZYNQ int fsl_udc_clk_init(struct platform_device *pdev); int fsl_udc_clk_finalize(struct platform_device *pdev); void fsl_udc_clk_release(void);
diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c
index 9162d1b..7d89415 100644
--- a/drivers/usb/host/fsl-mph-dr-of.c
+++ b/drivers/usb/host/fsl-mph-dr-of.c@@ -42,6 +42,10 @@ static struct fsl_usb2_dev_data dr_mode_data[] = { }, }; +#ifdef CONFIG_ARCH_ZYNQ +static u64 dma_mask = 0xFFFFFFF0; +#endif + static struct fsl_usb2_dev_data *get_dr_mode_data(struct device_node *np) { const unsigned char *prop;
@@ -94,7 +98,11 @@ static struct platform_device *fsl_usb2_device_register( pdev->dev.parent = &ofdev->dev; pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask; +#ifndef CONFIG_ARCH_ZYNQ *pdev->dev.dma_mask = *ofdev->dev.dma_mask; +#else + pdev->dev.dma_mask = &dma_mask; +#endif retval = platform_device_add_data(pdev, pdata, sizeof(*pdata)); if (retval)
@@ -320,6 +328,7 @@ static const struct of_device_id fsl_usb2_mph_dr_of_match[] = { #ifdef CONFIG_PPC_MPC512x { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, }, #endif + { .compatible = "synopsys,usb2-dr-2.20a", }, {}, };
--
1.7.4