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https://github.com/brain-hackers/u-boot-brain
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![Masahiro Yamada](/assets/img/avatar_default.png)
The Linux coding style guide (Documentation/process/coding-style.rst) clearly says: It's a **mistake** to use typedef for structures and pointers. Besides, using typedef for structures is annoying when you try to make headers self-contained. Let's say you have the following function declaration in a header: void foo(bd_t *bd); This is not self-contained since bd_t is not defined. To tell the compiler what 'bd_t' is, you need to include <asm/u-boot.h> #include <asm/u-boot.h> void foo(bd_t *bd); Then, the include direcective pulls in more bloat needlessly. If you use 'struct bd_info' instead, it is enough to put a forward declaration as follows: struct bd_info; void foo(struct bd_info *bd); Right, typedef'ing bd_t is a mistake. I used coccinelle to generate this commit. The semantic patch that makes this change is as follows: <smpl> @@ typedef bd_t; @@ -bd_t +struct bd_info </smpl> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
230 lines
5.4 KiB
C
230 lines
5.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2009, 2011 Freescale Semiconductor, Inc.
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*
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* (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB
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*
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* Author: Tor Krill tor@excito.com
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*/
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#include <common.h>
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#include <log.h>
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#include <usb.h>
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#include <asm/io.h>
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#include <hwconfig.h>
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#include <fsl_errata.h>
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#include <fsl_usb.h>
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#include <fdt_support.h>
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#ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
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#define CONFIG_USB_MAX_CONTROLLER_COUNT 1
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#endif
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/* USB Controllers */
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#define FSL_USB2_MPH "fsl-usb2-mph"
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#define FSL_USB2_DR "fsl-usb2-dr"
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#define CHIPIDEA_USB2 "chipidea,usb2"
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#define SNPS_DWC3 "snps,dwc3"
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static const char * const compat_usb_fsl[] = {
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FSL_USB2_MPH,
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FSL_USB2_DR,
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SNPS_DWC3,
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NULL
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};
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static int fdt_usb_get_node_type(void *blob, int start_offset,
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int *node_offset, const char **node_type)
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{
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int i;
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int ret = -ENOENT;
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for (i = 0; compat_usb_fsl[i]; i++) {
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*node_offset = fdt_node_offset_by_compatible
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(blob, start_offset,
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compat_usb_fsl[i]);
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if (*node_offset >= 0) {
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*node_type = compat_usb_fsl[i];
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ret = 0;
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break;
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}
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}
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return ret;
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}
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static int fdt_fixup_usb_mode_phy_type(void *blob, const char *mode,
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const char *phy_type, int start_offset)
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{
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const char *prop_mode = "dr_mode";
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const char *prop_type = "phy_type";
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const char *node_type = NULL;
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int node_offset;
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int err;
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err = fdt_usb_get_node_type(blob, start_offset,
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&node_offset, &node_type);
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if (err < 0)
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return err;
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if (mode) {
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err = fdt_setprop(blob, node_offset, prop_mode, mode,
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strlen(mode) + 1);
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if (err < 0)
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printf("WARNING: could not set %s for %s: %s.\n",
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prop_mode, node_type, fdt_strerror(err));
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}
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if (phy_type) {
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err = fdt_setprop(blob, node_offset, prop_type, phy_type,
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strlen(phy_type) + 1);
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if (err < 0)
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printf("WARNING: could not set %s for %s: %s.\n",
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prop_type, node_type, fdt_strerror(err));
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}
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return node_offset;
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}
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static int fsl_fdt_fixup_usb_erratum(void *blob, const char *prop_erratum,
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const char *controller_type,
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int start_offset)
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{
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int node_offset, err;
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const char *node_type = NULL;
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const char *node_name = NULL;
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err = fdt_usb_get_node_type(blob, start_offset,
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&node_offset, &node_type);
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if (err < 0)
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return err;
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if (!strcmp(node_type, FSL_USB2_MPH) || !strcmp(node_type, FSL_USB2_DR))
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node_name = CHIPIDEA_USB2;
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else
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node_name = node_type;
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if (strcmp(node_name, controller_type))
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return err;
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err = fdt_setprop(blob, node_offset, prop_erratum, NULL, 0);
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if (err < 0) {
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printf("ERROR: could not set %s for %s: %s.\n",
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prop_erratum, node_type, fdt_strerror(err));
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}
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return node_offset;
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}
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static int fsl_fdt_fixup_erratum(int *usb_erratum_off, void *blob,
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const char *controller_type, char *str,
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bool (*has_erratum)(void))
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{
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char buf[32] = {0};
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snprintf(buf, sizeof(buf), "fsl,usb-erratum-%s", str);
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if (!has_erratum())
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return -EINVAL;
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*usb_erratum_off = fsl_fdt_fixup_usb_erratum(blob, buf, controller_type,
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*usb_erratum_off);
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if (*usb_erratum_off < 0)
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return -ENOSPC;
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debug("Adding USB erratum %s\n", str);
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return 0;
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}
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void fsl_fdt_fixup_dr_usb(void *blob, struct bd_info *bd)
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{
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static const char * const modes[] = { "host", "peripheral", "otg" };
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static const char * const phys[] = { "ulpi", "utmi", "utmi_dual" };
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int usb_erratum_a006261_off = -1;
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int usb_erratum_a007075_off = -1;
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int usb_erratum_a007792_off = -1;
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int usb_erratum_a005697_off = -1;
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int usb_erratum_a008751_off = -1;
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int usb_mode_off = -1;
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int usb_phy_off = -1;
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char str[5];
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int i, j;
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int ret;
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for (i = 1; i <= CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
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const char *dr_mode_type = NULL;
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const char *dr_phy_type = NULL;
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int mode_idx = -1, phy_idx = -1;
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snprintf(str, 5, "%s%d", "usb", i);
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if (hwconfig(str)) {
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for (j = 0; j < ARRAY_SIZE(modes); j++) {
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if (hwconfig_subarg_cmp(str, "dr_mode",
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modes[j])) {
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mode_idx = j;
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break;
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}
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}
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for (j = 0; j < ARRAY_SIZE(phys); j++) {
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if (hwconfig_subarg_cmp(str, "phy_type",
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phys[j])) {
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phy_idx = j;
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break;
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}
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}
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if (mode_idx < 0 && phy_idx < 0) {
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printf("WARNING: invalid phy or mode\n");
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return;
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}
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if (mode_idx > -1)
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dr_mode_type = modes[mode_idx];
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if (phy_idx > -1)
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dr_phy_type = phys[phy_idx];
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}
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if (has_dual_phy())
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dr_phy_type = phys[2];
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usb_mode_off = fdt_fixup_usb_mode_phy_type(blob,
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dr_mode_type, NULL,
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usb_mode_off);
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if (usb_mode_off < 0)
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return;
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usb_phy_off = fdt_fixup_usb_mode_phy_type(blob,
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NULL, dr_phy_type,
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usb_phy_off);
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if (usb_phy_off < 0)
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return;
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ret = fsl_fdt_fixup_erratum(&usb_erratum_a006261_off, blob,
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CHIPIDEA_USB2, "a006261",
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has_erratum_a006261);
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if (ret == -ENOSPC)
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return;
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ret = fsl_fdt_fixup_erratum(&usb_erratum_a007075_off, blob,
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CHIPIDEA_USB2, "a007075",
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has_erratum_a007075);
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if (ret == -ENOSPC)
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return;
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ret = fsl_fdt_fixup_erratum(&usb_erratum_a007792_off, blob,
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CHIPIDEA_USB2, "a007792",
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has_erratum_a007792);
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if (ret == -ENOSPC)
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return;
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ret = fsl_fdt_fixup_erratum(&usb_erratum_a005697_off, blob,
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CHIPIDEA_USB2, "a005697",
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has_erratum_a005697);
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if (ret == -ENOSPC)
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return;
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ret = fsl_fdt_fixup_erratum(&usb_erratum_a008751_off, blob,
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SNPS_DWC3, "a008751",
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has_erratum_a008751);
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if (ret == -ENOSPC)
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return;
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}
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}
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