usb: musb-new: omap2430: Enable DM_USB and OF support
With upcoming changes that require CONFIG_BLK, this broke
USB Mass Storage on the OMAP3 boards because if CONFIG_BLK is
enabled, it assumes that DM_USB is enabled, but it wasn't yet
available on omap3 and omap4 boards.
This patch converts the OMAP2430 MUSB glue to support DM_USB and
extracts the necessary information based on the device tree.
It's based on the ti-musb driver, but there are enough significant
differences in both the architecture and device tree entires between
am33xx and OMAP3/OMAP4, that I think it makes sense to continue to
keep the separate.
Per doc/driver-model/usb-info.txt, the USB gadget stuff hasn't
migrated to DM_USB yet, so this only supports USB Host for now.
Users wanting USB Gadgets will need to disable DM_USB and leave
it the old way for now.
Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/drivers/usb/musb-new/omap2430.c b/drivers/usb/musb-new/omap2430.c
index fd63c07..342d76b 100644
--- a/drivers/usb/musb-new/omap2430.c
+++ b/drivers/usb/musb-new/omap2430.c
@@ -9,14 +9,18 @@
* This file is part of the Inventra Controller Driver for Linux.
*/
#include <common.h>
+#include <dm.h>
+#include <dm/device-internal.h>
+#include <dm/lists.h>
+#include <linux/usb/otg.h>
#include <asm/omap_common.h>
#include <asm/omap_musb.h>
#include <twl4030.h>
#include <twl6030.h>
#include "linux-compat.h"
-
#include "musb_core.h"
#include "omap2430.h"
+#include "musb_uboot.h"
static inline void omap2430_low_level_exit(struct musb *musb)
{
@@ -43,6 +47,7 @@
u32 l;
int status = 0;
unsigned long int start;
+
struct omap_musb_board_data *data =
(struct omap_musb_board_data *)musb->controller;
@@ -129,3 +134,146 @@
.enable = omap2430_musb_enable,
.disable = omap2430_musb_disable,
};
+
+#if defined(CONFIG_DM_USB)
+
+struct omap2430_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 omap2430_musb_ofdata_to_platdata(struct udevice *dev)
+{
+ struct omap2430_musb_platdata *platdata = dev_get_platdata(dev);
+ const void *fdt = gd->fdt_blob;
+ int node = dev_of_offset(dev);
+
+ platdata->base = (void *)dev_read_addr_ptr(dev);
+
+ platdata->musb_config.multipoint = fdtdec_get_int(fdt, node,
+ "multipoint",
+ -1);
+ if (platdata->musb_config.multipoint < 0) {
+ pr_err("MUSB multipoint DT entry missing\n");
+ return -ENOENT;
+ }
+
+ platdata->musb_config.dyn_fifo = 1;
+ platdata->musb_config.num_eps = fdtdec_get_int(fdt, node,
+ "num-eps", -1);
+ if (platdata->musb_config.num_eps < 0) {
+ pr_err("MUSB num-eps DT entry missing\n");
+ return -ENOENT;
+ }
+
+ platdata->musb_config.ram_bits = fdtdec_get_int(fdt, node,
+ "ram-bits", -1);
+ if (platdata->musb_config.ram_bits < 0) {
+ pr_err("MUSB ram-bits DT entry missing\n");
+ return -ENOENT;
+ }
+
+ platdata->plat.power = fdtdec_get_int(fdt, node,
+ "power", -1);
+ if (platdata->plat.power < 0) {
+ pr_err("MUSB power DT entry missing\n");
+ return -ENOENT;
+ }
+
+ platdata->otg_board_data.interface_type = fdtdec_get_int(fdt, node,
+ "interface-type", -1);
+ if (platdata->otg_board_data.interface_type < 0) {
+ pr_err("MUSB interface-type DT entry missing\n");
+ return -ENOENT;
+ }
+
+#if 0 /* In a perfect world, mode would be set to OTG, mode 3 from DT */
+ platdata->plat.mode = fdtdec_get_int(fdt, node,
+ "mode", -1);
+ if (platdata->plat.mode < 0) {
+ pr_err("MUSB mode DT entry missing\n");
+ return -ENOENT;
+ }
+#else /* MUSB_OTG, it doesn't work */
+#ifdef CONFIG_USB_MUSB_HOST /* Host seems to be the only option that works */
+ platdata->plat.mode = MUSB_HOST;
+#else /* For that matter, MUSB_PERIPHERAL doesn't either */
+ platdata->plat.mode = MUSB_PERIPHERAL;
+#endif
+#endif
+ platdata->otg_board_data.dev = dev;
+ platdata->plat.config = &platdata->musb_config;
+ platdata->plat.platform_ops = &omap2430_ops;
+ platdata->plat.board_data = &platdata->otg_board_data;
+ return 0;
+}
+
+static int omap2430_musb_probe(struct udevice *dev)
+{
+#ifdef CONFIG_USB_MUSB_HOST
+ struct musb_host_data *host = dev_get_priv(dev);
+#endif
+ struct omap2430_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;
+ void *base = dev_read_addr_ptr(dev);
+
+ priv->desc_before_addr = true;
+
+ otg_board_data = &platdata->otg_board_data;
+
+#ifdef CONFIG_USB_MUSB_HOST
+ host->host = musb_init_controller(&platdata->plat,
+ (struct device *)otg_board_data,
+ platdata->base);
+ if (!host->host) {
+ return -EIO;
+ }
+
+ ret = musb_lowlevel_init(host);
+#else
+ ret = musb_register(&platdata->plat,
+ (struct device *)otg_board_data,
+ platdata->base);
+#endif
+ return ret;
+}
+
+static int omap2430_musb_remove(struct udevice *dev)
+{
+ struct musb_host_data *host = dev_get_priv(dev);
+
+ musb_stop(host->host);
+
+ return 0;
+}
+
+static const struct udevice_id omap2430_musb_ids[] = {
+ { .compatible = "ti,omap3-musb" },
+ { .compatible = "ti,omap4-musb" },
+ { }
+};
+
+U_BOOT_DRIVER(omap2430_musb) = {
+ .name = "omap2430-musb",
+#ifdef CONFIG_USB_MUSB_HOST
+ .id = UCLASS_USB,
+#else
+ .id = UCLASS_USB_DEV_GENERIC,
+#endif
+ .of_match = omap2430_musb_ids,
+ .ofdata_to_platdata = omap2430_musb_ofdata_to_platdata,
+ .probe = omap2430_musb_probe,
+ .remove = omap2430_musb_remove,
+#ifdef CONFIG_USB_MUSB_HOST
+ .ops = &musb_usb_ops,
+#endif
+ .platdata_auto_alloc_size = sizeof(struct omap2430_musb_platdata),
+ .priv_auto_alloc_size = sizeof(struct musb_host_data),
+};
+
+#endif /* CONFIG_DM_USB */