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phy: rockchip-inno-usb2: add support for rockchip,usbgrf property 

The registers of usb-phy are distributed in grf and usbgrf on some
Rockchip SoCs (e.g RV1108), this patch add a new rockchip,usbgrf
property to support this companion grf design.

Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
This commit is contained in:
Frank Wang 2017-08-11 16:07:47 +08:00 committed by Kishon Vijay Abraham I
parent 4b63743cdb
commit 1543645c31
1 changed files with 71 additions and 38 deletions
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109
drivers/phy/rockchip/phy-rockchip-inno-usb2.c
View File

@ -202,6 +202,7 @@ struct rockchip_usb2phy_port {
/**
* struct rockchip_usb2phy: usb2.0 phy driver data.
* @grf: General Register Files regmap.
* @usbgrf: USB General Register Files regmap.
* @clk: clock struct of phy input clk.
* @clk480m: clock struct of phy output clk.
* @clk_hw: clock struct of phy output clk management.
@ -216,6 +217,7 @@ struct rockchip_usb2phy_port {
struct rockchip_usb2phy {
struct device *dev;
struct regmap *grf;
struct regmap *usbgrf;
struct clk *clk;
struct clk *clk480m;
struct clk_hw clk480m_hw;
@ -227,7 +229,12 @@ struct rockchip_usb2phy {
struct rockchip_usb2phy_port ports[USB2PHY_NUM_PORTS];
};
static inline int property_enable(struct rockchip_usb2phy *rphy,
static inline struct regmap *get_reg_base(struct rockchip_usb2phy *rphy)
{
return rphy->usbgrf == NULL ? rphy->grf : rphy->usbgrf;
}
static inline int property_enable(struct regmap *base,
const struct usb2phy_reg *reg, bool en)
{
unsigned int val, mask, tmp;
@ -236,17 +243,17 @@ static inline int property_enable(struct rockchip_usb2phy *rphy,
mask = GENMASK(reg->bitend, reg->bitstart);
val = (tmp << reg->bitstart) | (mask << BIT_WRITEABLE_SHIFT);
return regmap_write(rphy->grf, reg->offset, val);
return regmap_write(base, reg->offset, val);
}
static inline bool property_enabled(struct rockchip_usb2phy *rphy,
static inline bool property_enabled(struct regmap *base,
const struct usb2phy_reg *reg)
{
int ret;
unsigned int tmp, orig;
unsigned int mask = GENMASK(reg->bitend, reg->bitstart);
ret = regmap_read(rphy->grf, reg->offset, &orig);
ret = regmap_read(base, reg->offset, &orig);
if (ret)
return false;
@ -258,11 +265,12 @@ static int rockchip_usb2phy_clk480m_prepare(struct clk_hw *hw)
{
struct rockchip_usb2phy *rphy =
container_of(hw, struct rockchip_usb2phy, clk480m_hw);
struct regmap *base = get_reg_base(rphy);
int ret;
/* turn on 480m clk output if it is off */
if (!property_enabled(rphy, &rphy->phy_cfg->clkout_ctl)) {
ret = property_enable(rphy, &rphy->phy_cfg->clkout_ctl, true);
if (!property_enabled(base, &rphy->phy_cfg->clkout_ctl)) {
ret = property_enable(base, &rphy->phy_cfg->clkout_ctl, true);
if (ret)
return ret;
@ -277,17 +285,19 @@ static void rockchip_usb2phy_clk480m_unprepare(struct clk_hw *hw)
{
struct rockchip_usb2phy *rphy =
container_of(hw, struct rockchip_usb2phy, clk480m_hw);
struct regmap *base = get_reg_base(rphy);
/* turn off 480m clk output */
property_enable(rphy, &rphy->phy_cfg->clkout_ctl, false);
property_enable(base, &rphy->phy_cfg->clkout_ctl, false);
}
static int rockchip_usb2phy_clk480m_prepared(struct clk_hw *hw)
{
struct rockchip_usb2phy *rphy =
container_of(hw, struct rockchip_usb2phy, clk480m_hw);
struct regmap *base = get_reg_base(rphy);
return property_enabled(rphy, &rphy->phy_cfg->clkout_ctl);
return property_enabled(base, &rphy->phy_cfg->clkout_ctl);
}
static unsigned long
@ -409,13 +419,13 @@ static int rockchip_usb2phy_init(struct phy *phy)
if (rport->mode != USB_DR_MODE_HOST &&
rport->mode != USB_DR_MODE_UNKNOWN) {
/* clear bvalid status and enable bvalid detect irq */
ret = property_enable(rphy,
ret = property_enable(rphy->grf,
&rport->port_cfg->bvalid_det_clr,
true);
if (ret)
goto out;
ret = property_enable(rphy,
ret = property_enable(rphy->grf,
&rport->port_cfg->bvalid_det_en,
true);
if (ret)
@ -429,11 +439,13 @@ static int rockchip_usb2phy_init(struct phy *phy)
}
} else if (rport->port_id == USB2PHY_PORT_HOST) {
/* clear linestate and enable linestate detect irq */
ret = property_enable(rphy, &rport->port_cfg->ls_det_clr, true);
ret = property_enable(rphy->grf,
&rport->port_cfg->ls_det_clr, true);
if (ret)
goto out;
ret = property_enable(rphy, &rport->port_cfg->ls_det_en, true);
ret = property_enable(rphy->grf,
&rport->port_cfg->ls_det_en, true);
if (ret)
goto out;
@ -449,6 +461,7 @@ static int rockchip_usb2phy_power_on(struct phy *phy)
{
struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy);
struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent);
struct regmap *base = get_reg_base(rphy);
int ret;
dev_dbg(&rport->phy->dev, "port power on\n");
@ -460,7 +473,7 @@ static int rockchip_usb2phy_power_on(struct phy *phy)
if (ret)
return ret;
ret = property_enable(rphy, &rport->port_cfg->phy_sus, false);
ret = property_enable(base, &rport->port_cfg->phy_sus, false);
if (ret)
return ret;
@ -475,6 +488,7 @@ static int rockchip_usb2phy_power_off(struct phy *phy)
{
struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy);
struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent);
struct regmap *base = get_reg_base(rphy);
int ret;
dev_dbg(&rport->phy->dev, "port power off\n");
@ -482,7 +496,7 @@ static int rockchip_usb2phy_power_off(struct phy *phy)
if (rport->suspended)
return 0;
ret = property_enable(rphy, &rport->port_cfg->phy_sus, true);
ret = property_enable(base, &rport->port_cfg->phy_sus, true);
if (ret)
return ret;
@ -526,11 +540,11 @@ static void rockchip_usb2phy_otg_sm_work(struct work_struct *work)
bool vbus_attach, sch_work, notify_charger;
if (rport->utmi_avalid)
vbus_attach =
property_enabled(rphy, &rport->port_cfg->utmi_avalid);
vbus_attach = property_enabled(rphy->grf,
&rport->port_cfg->utmi_avalid);
else
vbus_attach =
property_enabled(rphy, &rport->port_cfg->utmi_bvalid);
vbus_attach = property_enabled(rphy->grf,
&rport->port_cfg->utmi_bvalid);
sch_work = false;
notify_charger = false;
@ -650,22 +664,28 @@ static const char *chg_to_string(enum power_supply_type chg_type)
static void rockchip_chg_enable_dcd(struct rockchip_usb2phy *rphy,
bool en)
{
property_enable(rphy, &rphy->phy_cfg->chg_det.rdm_pdwn_en, en);
property_enable(rphy, &rphy->phy_cfg->chg_det.idp_src_en, en);
struct regmap *base = get_reg_base(rphy);
property_enable(base, &rphy->phy_cfg->chg_det.rdm_pdwn_en, en);
property_enable(base, &rphy->phy_cfg->chg_det.idp_src_en, en);
}
static void rockchip_chg_enable_primary_det(struct rockchip_usb2phy *rphy,
bool en)
{
property_enable(rphy, &rphy->phy_cfg->chg_det.vdp_src_en, en);
property_enable(rphy, &rphy->phy_cfg->chg_det.idm_sink_en, en);
struct regmap *base = get_reg_base(rphy);
property_enable(base, &rphy->phy_cfg->chg_det.vdp_src_en, en);
property_enable(base, &rphy->phy_cfg->chg_det.idm_sink_en, en);
}
static void rockchip_chg_enable_secondary_det(struct rockchip_usb2phy *rphy,
bool en)
{
property_enable(rphy, &rphy->phy_cfg->chg_det.vdm_src_en, en);
property_enable(rphy, &rphy->phy_cfg->chg_det.idp_sink_en, en);
struct regmap *base = get_reg_base(rphy);
property_enable(base, &rphy->phy_cfg->chg_det.vdm_src_en, en);
property_enable(base, &rphy->phy_cfg->chg_det.idp_sink_en, en);
}
#define CHG_DCD_POLL_TIME (100 * HZ / 1000)
@ -677,6 +697,7 @@ static void rockchip_chg_detect_work(struct work_struct *work)
struct rockchip_usb2phy_port *rport =
container_of(work, struct rockchip_usb2phy_port, chg_work.work);
struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent);
struct regmap *base = get_reg_base(rphy);
bool is_dcd, tmout, vout;
unsigned long delay;
@ -687,7 +708,7 @@ static void rockchip_chg_detect_work(struct work_struct *work)
if (!rport->suspended)
rockchip_usb2phy_power_off(rport->phy);
/* put the controller in non-driving mode */
property_enable(rphy, &rphy->phy_cfg->chg_det.opmode, false);
property_enable(base, &rphy->phy_cfg->chg_det.opmode, false);
/* Start DCD processing stage 1 */
rockchip_chg_enable_dcd(rphy, true);
rphy->chg_state = USB_CHG_STATE_WAIT_FOR_DCD;
@ -696,7 +717,8 @@ static void rockchip_chg_detect_work(struct work_struct *work)
break;
case USB_CHG_STATE_WAIT_FOR_DCD:
/* get data contact detection status */
is_dcd = property_enabled(rphy, &rphy->phy_cfg->chg_det.dp_det);
is_dcd = property_enabled(rphy->grf,
&rphy->phy_cfg->chg_det.dp_det);
tmout = ++rphy->dcd_retries == CHG_DCD_MAX_RETRIES;
/* stage 2 */
if (is_dcd || tmout) {
@ -713,7 +735,8 @@ static void rockchip_chg_detect_work(struct work_struct *work)
}
break;
case USB_CHG_STATE_DCD_DONE:
vout = property_enabled(rphy, &rphy->phy_cfg->chg_det.cp_det);
vout = property_enabled(rphy->grf,
&rphy->phy_cfg->chg_det.cp_det);
rockchip_chg_enable_primary_det(rphy, false);
if (vout) {
/* Voltage Source on DM, Probe on DP */
@ -734,7 +757,8 @@ static void rockchip_chg_detect_work(struct work_struct *work)
}
break;
case USB_CHG_STATE_PRIMARY_DONE:
vout = property_enabled(rphy, &rphy->phy_cfg->chg_det.dcp_det);
vout = property_enabled(rphy->grf,
&rphy->phy_cfg->chg_det.dcp_det);
/* Turn off voltage source */
rockchip_chg_enable_secondary_det(rphy, false);
if (vout)
@ -748,7 +772,7 @@ static void rockchip_chg_detect_work(struct work_struct *work)
/* fall through */
case USB_CHG_STATE_DETECTED:
/* put the controller in normal mode */
property_enable(rphy, &rphy->phy_cfg->chg_det.opmode, true);
property_enable(base, &rphy->phy_cfg->chg_det.opmode, true);
rockchip_usb2phy_otg_sm_work(&rport->otg_sm_work.work);
dev_info(&rport->phy->dev, "charger = %s\n",
chg_to_string(rphy->chg_type));
@ -790,8 +814,7 @@ static void rockchip_usb2phy_sm_work(struct work_struct *work)
if (ret < 0)
goto next_schedule;
ret = regmap_read(rphy->grf, rport->port_cfg->utmi_hstdet.offset,
&uhd);
ret = regmap_read(rphy->grf, rport->port_cfg->utmi_hstdet.offset, &uhd);
if (ret < 0)
goto next_schedule;
@ -845,8 +868,8 @@ static void rockchip_usb2phy_sm_work(struct work_struct *work)
* activate the linestate detection to get the next device
* plug-in irq.
*/
property_enable(rphy, &rport->port_cfg->ls_det_clr, true);
property_enable(rphy, &rport->port_cfg->ls_det_en, true);
property_enable(rphy->grf, &rport->port_cfg->ls_det_clr, true);
property_enable(rphy->grf, &rport->port_cfg->ls_det_en, true);
/*
* we don't need to rearm the delayed work when the phy port
@ -869,14 +892,14 @@ static irqreturn_t rockchip_usb2phy_linestate_irq(int irq, void *data)
struct rockchip_usb2phy_port *rport = data;
struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent);
if (!property_enabled(rphy, &rport->port_cfg->ls_det_st))
if (!property_enabled(rphy->grf, &rport->port_cfg->ls_det_st))
return IRQ_NONE;
mutex_lock(&rport->mutex);
/* disable linestate detect irq and clear its status */
property_enable(rphy, &rport->port_cfg->ls_det_en, false);
property_enable(rphy, &rport->port_cfg->ls_det_clr, true);
property_enable(rphy->grf, &rport->port_cfg->ls_det_en, false);
property_enable(rphy->grf, &rport->port_cfg->ls_det_clr, true);
mutex_unlock(&rport->mutex);
@ -896,13 +919,13 @@ static irqreturn_t rockchip_usb2phy_bvalid_irq(int irq, void *data)
struct rockchip_usb2phy_port *rport = data;
struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent);
if (!property_enabled(rphy, &rport->port_cfg->bvalid_det_st))
if (!property_enabled(rphy->grf, &rport->port_cfg->bvalid_det_st))
return IRQ_NONE;
mutex_lock(&rport->mutex);
/* clear bvalid detect irq pending status */
property_enable(rphy, &rport->port_cfg->bvalid_det_clr, true);
property_enable(rphy->grf, &rport->port_cfg->bvalid_det_clr, true);
mutex_unlock(&rport->mutex);
@ -1045,6 +1068,16 @@ static int rockchip_usb2phy_probe(struct platform_device *pdev)
if (IS_ERR(rphy->grf))
return PTR_ERR(rphy->grf);
if (of_device_is_compatible(np, "rockchip,rv1108-usb2phy")) {
rphy->usbgrf =
syscon_regmap_lookup_by_phandle(dev->of_node,
"rockchip,usbgrf");
if (IS_ERR(rphy->usbgrf))
return PTR_ERR(rphy->usbgrf);
} else {
rphy->usbgrf = NULL;
}
if (of_property_read_u32(np, "reg", &reg)) {
dev_err(dev, "the reg property is not assigned in %s node\n",
np->name);