mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 08:58:52 +09:00
![Masahiro Yamada](/assets/img/avatar_default.png)
U-Boot widely uses error() as a bit noisier variant of printf(). This macro causes name conflict with the following line in include/linux/compiler-gcc.h: # define __compiletime_error(message) __attribute__((error(message))) This prevents us from using __compiletime_error(), and makes it difficult to fully sync BUILD_BUG macros with Linux. (Notice Linux's BUILD_BUG_ON_MSG is implemented by using compiletime_assert().) Let's convert error() into now treewide-available pr_err(). Done with the help of Coccinelle, excluing tools/ directory. The semantic patch I used is as follows: // <smpl> @@@@ -error +pr_err (...) // </smpl> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org> [trini: Re-run Coccinelle] Signed-off-by: Tom Rini <trini@konsulko.com>
182 lines
3.9 KiB
C
182 lines
3.9 KiB
C
/*
|
|
* Copyright (c) 2017
|
|
* Patrice Chotard <patrice.chotard@st.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <bitfield.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <fdtdec.h>
|
|
#include <generic-phy.h>
|
|
#include <libfdt.h>
|
|
#include <regmap.h>
|
|
#include <reset-uclass.h>
|
|
#include <syscon.h>
|
|
#include <wait_bit.h>
|
|
|
|
#include <linux/bitops.h>
|
|
#include <linux/compat.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
/* Default PHY_SEL and REFCLKSEL configuration */
|
|
#define STIH407_USB_PICOPHY_CTRL_PORT_CONF 0x6
|
|
|
|
/* ports parameters overriding */
|
|
#define STIH407_USB_PICOPHY_PARAM_DEF 0x39a4dc
|
|
|
|
#define PHYPARAM_REG 1
|
|
#define PHYCTRL_REG 2
|
|
#define PHYPARAM_NB 3
|
|
|
|
struct sti_usb_phy {
|
|
struct regmap *regmap;
|
|
struct reset_ctl global_ctl;
|
|
struct reset_ctl port_ctl;
|
|
int param;
|
|
int ctrl;
|
|
};
|
|
|
|
static int sti_usb_phy_deassert(struct sti_usb_phy *phy)
|
|
{
|
|
int ret;
|
|
|
|
ret = reset_deassert(&phy->global_ctl);
|
|
if (ret < 0) {
|
|
pr_err("PHY global deassert failed: %d", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = reset_deassert(&phy->port_ctl);
|
|
if (ret < 0)
|
|
pr_err("PHY port deassert failed: %d", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int sti_usb_phy_init(struct phy *usb_phy)
|
|
{
|
|
struct udevice *dev = usb_phy->dev;
|
|
struct sti_usb_phy *phy = dev_get_priv(dev);
|
|
void __iomem *reg;
|
|
|
|
/* set ctrl picophy value */
|
|
reg = (void __iomem *)phy->regmap->base + phy->ctrl;
|
|
/* CTRL_PORT mask is 0x1f */
|
|
clrsetbits_le32(reg, 0x1f, STIH407_USB_PICOPHY_CTRL_PORT_CONF);
|
|
|
|
/* set ports parameters overriding */
|
|
reg = (void __iomem *)phy->regmap->base + phy->param;
|
|
/* PARAM_DEF mask is 0xffffffff */
|
|
clrsetbits_le32(reg, 0xffffffff, STIH407_USB_PICOPHY_PARAM_DEF);
|
|
|
|
return sti_usb_phy_deassert(phy);
|
|
}
|
|
|
|
static int sti_usb_phy_exit(struct phy *usb_phy)
|
|
{
|
|
struct udevice *dev = usb_phy->dev;
|
|
struct sti_usb_phy *phy = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
ret = reset_assert(&phy->port_ctl);
|
|
if (ret < 0) {
|
|
pr_err("PHY port assert failed: %d", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = reset_assert(&phy->global_ctl);
|
|
if (ret < 0)
|
|
pr_err("PHY global assert failed: %d", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
struct phy_ops sti_usb_phy_ops = {
|
|
.init = sti_usb_phy_init,
|
|
.exit = sti_usb_phy_exit,
|
|
};
|
|
|
|
int sti_usb_phy_probe(struct udevice *dev)
|
|
{
|
|
struct sti_usb_phy *priv = dev_get_priv(dev);
|
|
struct udevice *syscon;
|
|
struct ofnode_phandle_args syscfg_phandle;
|
|
u32 cells[PHYPARAM_NB];
|
|
int ret, count;
|
|
|
|
/* get corresponding syscon phandle */
|
|
ret = dev_read_phandle_with_args(dev, "st,syscfg", NULL, 0, 0,
|
|
&syscfg_phandle);
|
|
|
|
if (ret < 0) {
|
|
pr_err("Can't get syscfg phandle: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = uclass_get_device_by_ofnode(UCLASS_SYSCON, syscfg_phandle.node,
|
|
&syscon);
|
|
if (ret) {
|
|
pr_err("unable to find syscon device (%d)\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
priv->regmap = syscon_get_regmap(syscon);
|
|
if (!priv->regmap) {
|
|
pr_err("unable to find regmap\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* get phy param offset */
|
|
count = fdtdec_get_int_array_count(gd->fdt_blob, dev_of_offset(dev),
|
|
"st,syscfg", cells,
|
|
ARRAY_SIZE(cells));
|
|
|
|
if (count < 0) {
|
|
pr_err("Bad PHY st,syscfg property %d\n", count);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (count > PHYPARAM_NB) {
|
|
pr_err("Unsupported PHY param count %d\n", count);
|
|
return -EINVAL;
|
|
}
|
|
|
|
priv->param = cells[PHYPARAM_REG];
|
|
priv->ctrl = cells[PHYCTRL_REG];
|
|
|
|
/* get global reset control */
|
|
ret = reset_get_by_name(dev, "global", &priv->global_ctl);
|
|
if (ret) {
|
|
pr_err("can't get global reset for %s (%d)", dev->name, ret);
|
|
return ret;
|
|
}
|
|
|
|
/* get port reset control */
|
|
ret = reset_get_by_name(dev, "port", &priv->port_ctl);
|
|
if (ret) {
|
|
pr_err("can't get port reset for %s (%d)", dev->name, ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id sti_usb_phy_ids[] = {
|
|
{ .compatible = "st,stih407-usb2-phy" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(sti_usb_phy) = {
|
|
.name = "sti_usb_phy",
|
|
.id = UCLASS_PHY,
|
|
.of_match = sti_usb_phy_ids,
|
|
.probe = sti_usb_phy_probe,
|
|
.ops = &sti_usb_phy_ops,
|
|
.priv_auto_alloc_size = sizeof(struct sti_usb_phy),
|
|
};
|