drivers: usb: musb: add ti musb host driver with driver model support

Add a TI MUSB host driver with driver model support and the
driver will be bound by the MUSB wrapper driver based on the
dr_mode device tree entry.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

diff --git a/drivers/usb/musb-new/ti-musb.c b/drivers/usb/musb-new/ti-musb.c
index cf0e296bd084a4b75ab7619d6384c8304a4163ad..1c15aa2a427f6570fbdfc30931524efc76a88e9c 100644 (file)
--- a/drivers/usb/musb-new/ti-musb.c
+++ b/drivers/usb/musb-new/ti-musb.c
@@ -14,10 +14,195 @@
 #include <dm/device-internal.h>
 #include <dm/lists.h>
 
+#include <asm/io.h>
+#include <asm/omap_musb.h>
+#include "musb_uboot.h"
+
 DECLARE_GLOBAL_DATA_PTR;
 
 #ifdef CONFIG_DM_USB
 
+/* USB 2.0 PHY Control */
+#define CM_PHY_PWRDN                   (1 << 0)
+#define CM_PHY_OTG_PWRDN               (1 << 1)
+#define OTGVDET_EN                     (1 << 19)
+#define OTGSESSENDEN                   (1 << 20)
+
+#define AM335X_USB1_CTRL       0x8
+
+struct ti_musb_platdata {
+       void *base;
+       void *ctrl_mod_base;
+       struct musb_hdrc_platform_data plat;
+       struct musb_hdrc_config musb_config;
+       struct omap_musb_board_data otg_board_data;
+};
+
+static int ti_musb_get_usb_index(int node)
+{
+       const void *fdt = gd->fdt_blob;
+       int i = 0;
+       char path[64];
+       const char *alias_path;
+       char alias[16];
+
+       fdt_get_path(fdt, node, path, sizeof(path));
+
+       do {
+               snprintf(alias, sizeof(alias), "usb%d", i);
+               alias_path = fdt_get_alias(fdt, alias);
+               if (alias_path == NULL) {
+                       debug("USB index not found\n");
+                       return -ENOENT;
+               }
+
+               if (!strcmp(path, alias_path))
+                       return i;
+
+               i++;
+       } while (alias_path);
+
+       return -ENOENT;
+}
+
+static void ti_musb_set_phy_power(struct udevice *dev, u8 on)
+{
+       struct ti_musb_platdata *platdata = dev_get_platdata(dev);
+
+       if (on) {
+               clrsetbits_le32(platdata->ctrl_mod_base,
+                               CM_PHY_PWRDN | CM_PHY_OTG_PWRDN,
+                               OTGVDET_EN | OTGSESSENDEN);
+       } else {
+               clrsetbits_le32(platdata->ctrl_mod_base, 0,
+                               CM_PHY_PWRDN | CM_PHY_OTG_PWRDN);
+       }
+}
+
+static int ti_musb_ofdata_to_platdata(struct udevice *dev)
+{
+       struct ti_musb_platdata *platdata = dev_get_platdata(dev);
+       const void *fdt = gd->fdt_blob;
+       int node = dev->of_offset;
+       int phys;
+       int ctrl_mod;
+       int usb_index;
+
+       platdata->base = (void *)dev_get_addr_index(dev, 1);
+
+       phys = fdtdec_lookup_phandle(fdt, node, "phys");
+       ctrl_mod = fdtdec_lookup_phandle(fdt, phys, "ti,ctrl_mod");
+       platdata->ctrl_mod_base = (void *)fdtdec_get_addr(fdt, ctrl_mod, "reg");
+       usb_index = ti_musb_get_usb_index(node);
+       switch (usb_index) {
+       case 1:
+               platdata->ctrl_mod_base += AM335X_USB1_CTRL;
+       case 0:
+       default:
+               break;
+       }
+
+       platdata->musb_config.multipoint = fdtdec_get_int(fdt, node,
+                                                         "mentor,multipoint",
+                                                         -1);
+       if (platdata->musb_config.multipoint < 0) {
+               error("MUSB multipoint DT entry missing\n");
+               return -ENOENT;
+       }
+
+       platdata->musb_config.dyn_fifo = 1;
+
+       platdata->musb_config.num_eps = fdtdec_get_int(fdt, node,
+                                                      "mentor,num-eps", -1);
+       if (platdata->musb_config.num_eps < 0) {
+               error("MUSB num-eps DT entry missing\n");
+               return -ENOENT;
+       }
+
+       platdata->musb_config.ram_bits = fdtdec_get_int(fdt, node,
+                                                       "mentor,ram-bits", -1);
+       if (platdata->musb_config.ram_bits < 0) {
+               error("MUSB ram-bits DT entry missing\n");
+               return -ENOENT;
+       }
+
+       platdata->otg_board_data.set_phy_power = ti_musb_set_phy_power;
+       platdata->otg_board_data.dev = dev;
+       platdata->plat.config = &platdata->musb_config;
+
+       platdata->plat.power = fdtdec_get_int(fdt, node, "mentor,power", -1);
+       if (platdata->plat.power < 0) {
+               error("MUSB mentor,power DT entry missing\n");
+               return -ENOENT;
+       }
+
+       platdata->plat.platform_ops = &musb_dsps_ops;
+       platdata->plat.board_data = &platdata->otg_board_data;
+
+       return 0;
+}
+
+static int ti_musb_host_probe(struct udevice *dev)
+{
+       struct musb_host_data *host = dev_get_priv(dev);
+       struct ti_musb_platdata *platdata = dev_get_platdata(dev);
+       struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
+       struct omap_musb_board_data *otg_board_data;
+       int ret;
+
+       priv->desc_before_addr = true;
+
+       otg_board_data = &platdata->otg_board_data;
+
+       host->host = musb_init_controller(&platdata->plat,
+                                         (struct device *)otg_board_data,
+                                         platdata->base);
+       if (!host->host)
+               return -EIO;
+
+       ret = musb_lowlevel_init(host);
+
+       return ret;
+}
+
+static int ti_musb_host_remove(struct udevice *dev)
+{
+       struct musb_host_data *host = dev_get_priv(dev);
+
+       musb_stop(host->host);
+
+       return 0;
+}
+
+static int ti_musb_host_ofdata_to_platdata(struct udevice *dev)
+{
+       struct ti_musb_platdata *platdata = dev_get_platdata(dev);
+       const void *fdt = gd->fdt_blob;
+       int node = dev->of_offset;
+       int ret;
+
+       ret = ti_musb_ofdata_to_platdata(dev);
+       if (ret) {
+               error("platdata dt parse error\n");
+               return ret;
+       }
+
+       platdata->plat.mode = MUSB_HOST;
+
+       return 0;
+}
+
+U_BOOT_DRIVER(ti_musb_host) = {
+       .name   = "ti-musb-host",
+       .id     = UCLASS_USB,
+       .ofdata_to_platdata = ti_musb_host_ofdata_to_platdata,
+       .probe = ti_musb_host_probe,
+       .remove = ti_musb_host_remove,
+       .ops    = &musb_usb_ops,
+       .platdata_auto_alloc_size = sizeof(struct ti_musb_platdata),
+       .priv_auto_alloc_size = sizeof(struct musb_host_data),
+};
+
 static int ti_musb_wrapper_bind(struct udevice *parent)
 {
        const void *fdt = gd->fdt_blob;
@@ -41,6 +226,12 @@ static int ti_musb_wrapper_bind(struct udevice *parent)
                        break;
                case USB_DR_MODE_HOST:
                        /* Bind MUSB host */
+                       ret = device_bind_driver_to_node(parent, "ti-musb-host",
+                                                        name, node, &dev);
+                       if (ret) {
+                               error("musb - not able to bind usb host node\n");
+                               return ret;
+                       }
                        break;
                default:
                        break;