From patchwork Thu Dec 6 06:32:34 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [U-Boot,1/3,V2] EHCI: Exynos: Add fdt support Date: Wed, 05 Dec 2012 20:32:34 -0000 From: Rajeshwari Shinde X-Patchwork-Id: 204140 Message-Id: <1354775556-23212-2-git-send-email-rajeshwari.s@samsung.com> To: u-boot@lists.denx.de Cc: marex@denx.de, patches@linaro.org Adding fdt support to ehci-exynos in order to parse register base addresses from the device node. Signed-off-by: Vivek Gautam Signed-off-by: Rajeshwari Shinde --- Chnages in V2: - Removed checkpatch errors. drivers/usb/host/ehci-exynos.c | 59 ++++++++++++++++++++++++++++++++++++--- 1 files changed, 54 insertions(+), 5 deletions(-) diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c index 9f0ed06..f9189a5 100644 --- a/drivers/usb/host/ehci-exynos.c +++ b/drivers/usb/host/ehci-exynos.c @@ -21,6 +21,8 @@ */ #include +#include +#include #include #include #include @@ -28,6 +30,9 @@ #include #include "ehci.h" +/* Declare global data pointer */ +DECLARE_GLOBAL_DATA_PTR; + /* Setup the EHCI host controller. */ static void setup_usb_phy(struct exynos_usb_phy *usb) { @@ -86,12 +91,39 @@ static void reset_usb_phy(struct exynos_usb_phy *usb) */ int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor) { - struct exynos_usb_phy *usb; + struct exynos_usb_phy *usb = NULL; + unsigned int *hcd = NULL; + unsigned int node; + + node = fdtdec_next_compatible(gd->fdt_blob, 0, + COMPAT_SAMSUNG_EXYNOS_EHCI); + if (node <= 0) { + debug("EHCI: Can't get device tree node for ehci\n"); + return -1; + } + + /* + * Get the base address for usbphy from the device node + */ + usb = (struct exynos_usb_phy *)fdtdec_get_addr(gd->fdt_blob, node, + "phyreg"); + if (usb == NULL) { + debug("Can't get the usbphy register address\n"); + return -1; + } - usb = (struct exynos_usb_phy *)samsung_get_base_usb_phy(); setup_usb_phy(usb); - *hccr = (struct ehci_hccr *)samsung_get_base_usb_ehci(); + /* + * Get the base address for XHCI controller from the device node + */ + hcd = (unsigned int *)fdtdec_get_addr(gd->fdt_blob, node, "reg"); + if (hcd == NULL) { + debug("Can't get the XHCI registere address\n"); + return -1; + } + + *hccr = (struct ehci_hccr *)hcd; *hcor = (struct ehci_hcor *)((uint32_t) *hccr + HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase))); @@ -108,9 +140,26 @@ int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor) */ int ehci_hcd_stop(int index) { - struct exynos_usb_phy *usb; + struct exynos_usb_phy *usb = NULL; + unsigned int node; + + node = fdtdec_next_compatible(gd->fdt_blob, 0, + COMPAT_SAMSUNG_EXYNOS_EHCI); + if (node <= 0) { + debug("EHCI: Can't get device tree node for ehci\n"); + return -1; + } + + /* + * Get the base address for usbphy from the device node + */ + usb = (struct exynos_usb_phy *)fdtdec_get_addr(gd->fdt_blob, node, + "phyreg"); + if (usb == NULL) { + debug("Can't get the usbphy register address\n"); + return -1; + } - usb = (struct exynos_usb_phy *)samsung_get_base_usb_phy(); reset_usb_phy(usb); return 0;