Messages in this thread | | | Date | Wed, 8 Mar 2023 09:48:08 +0100 | Subject | Re: [PATCH] phy: st: miphy28lp: use _poll_timeout functions for waits | From | Patrice CHOTARD <> |
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Hi Alain
On 2/10/23 23:43, Alain Volmat wrote: > This commit introduces _poll_timeout functions usage instead of > wait loops waiting for a status bit. > > Signed-off-by: Alain Volmat <avolmat@me.com> > --- > drivers/phy/st/phy-miphy28lp.c | 42 ++++++++-------------------------- > 1 file changed, 10 insertions(+), 32 deletions(-) > > diff --git a/drivers/phy/st/phy-miphy28lp.c b/drivers/phy/st/phy-miphy28lp.c > index 068160a34f5c..e30305b77f0d 100644 > --- a/drivers/phy/st/phy-miphy28lp.c > +++ b/drivers/phy/st/phy-miphy28lp.c > @@ -9,6 +9,7 @@ > > #include <linux/platform_device.h> > #include <linux/io.h> > +#include <linux/iopoll.h> > #include <linux/kernel.h> > #include <linux/module.h> > #include <linux/of.h> > @@ -484,19 +485,11 @@ static inline void miphy28lp_pcie_config_gen(struct miphy28lp_phy *miphy_phy) > > static inline int miphy28lp_wait_compensation(struct miphy28lp_phy *miphy_phy) > { > - unsigned long finish = jiffies + 5 * HZ; > u8 val; > > /* Waiting for Compensation to complete */ > - do { > - val = readb_relaxed(miphy_phy->base + MIPHY_COMP_FSM_6); > - > - if (time_after_eq(jiffies, finish)) > - return -EBUSY; > - cpu_relax(); > - } while (!(val & COMP_DONE)); > - > - return 0; > + return readb_relaxed_poll_timeout(miphy_phy->base + MIPHY_COMP_FSM_6, > + val, val & COMP_DONE, 1, 5 * USEC_PER_SEC); > } > > > @@ -805,7 +798,6 @@ static inline void miphy28lp_configure_usb3(struct miphy28lp_phy *miphy_phy) > > static inline int miphy_is_ready(struct miphy28lp_phy *miphy_phy) > { > - unsigned long finish = jiffies + 5 * HZ; > u8 mask = HFC_PLL | HFC_RDY; > u8 val; > > @@ -816,21 +808,14 @@ static inline int miphy_is_ready(struct miphy28lp_phy *miphy_phy) > if (miphy_phy->type == PHY_TYPE_SATA) > mask |= PHY_RDY; > > - do { > - val = readb_relaxed(miphy_phy->base + MIPHY_STATUS_1); > - if ((val & mask) != mask) > - cpu_relax(); > - else > - return 0; > - } while (!time_after_eq(jiffies, finish)); > - > - return -EBUSY; > + return readb_relaxed_poll_timeout(miphy_phy->base + MIPHY_STATUS_1, > + val, (val & mask) == mask, 1, > + 5 * USEC_PER_SEC); > } > > static int miphy_osc_is_ready(struct miphy28lp_phy *miphy_phy) > { > struct miphy28lp_dev *miphy_dev = miphy_phy->phydev; > - unsigned long finish = jiffies + 5 * HZ; > u32 val; > > if (!miphy_phy->osc_rdy) > @@ -839,17 +824,10 @@ static int miphy_osc_is_ready(struct miphy28lp_phy *miphy_phy) > if (!miphy_phy->syscfg_reg[SYSCFG_STATUS]) > return -EINVAL; > > - do { > - regmap_read(miphy_dev->regmap, > - miphy_phy->syscfg_reg[SYSCFG_STATUS], &val); > - > - if ((val & MIPHY_OSC_RDY) != MIPHY_OSC_RDY) > - cpu_relax(); > - else > - return 0; > - } while (!time_after_eq(jiffies, finish)); > - > - return -EBUSY; > + return regmap_read_poll_timeout(miphy_dev->regmap, > + miphy_phy->syscfg_reg[SYSCFG_STATUS], > + val, val & MIPHY_OSC_RDY, 1, > + 5 * USEC_PER_SEC); > } > > static int miphy28lp_get_resource_byname(struct device_node *child,
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Thanks Patrice
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