Adding fdt support to ehci-exynos in order to parse
register base addresses from the device node.
Signed-off-by: Vivek Gautam <gautam.vi...@samsung.com>
---
drivers/usb/host/ehci-exynos.c | 57 ++++++++++++++++++++++++++++++++++++---
1 files changed, 52 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c
index 9f0ed06..f4c873f 100644
--- a/drivers/usb/host/ehci-exynos.c
+++ b/drivers/usb/host/ehci-exynos.c
@@ -21,6 +21,8 @@
*/
#include <common.h>
+#include <fdtdec.h>
+#include <libfdt.h>
#include <usb.h>
#include <asm/arch/cpu.h>
#include <asm/arch/ehci.h>
@@ -28,6 +30,9 @@
#include <asm/arch/power.h>
#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 +91,38 @@ 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 +139,25 @@ 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;
--
1.7.4.4
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