diff options
Diffstat (limited to 'drivers/net/can/rcar/rcar_canfd.c')
| -rw-r--r-- | drivers/net/can/rcar/rcar_canfd.c | 41 |
1 files changed, 16 insertions, 25 deletions
diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c index b82842718735..c919668bbe7a 100644 --- a/drivers/net/can/rcar/rcar_canfd.c +++ b/drivers/net/can/rcar/rcar_canfd.c @@ -508,12 +508,6 @@ */ #define RCANFD_CFFIFO_IDX 0 -/* fCAN clock select register settings */ -enum rcar_canfd_fcanclk { - RCANFD_CANFDCLK = 0, /* CANFD clock */ - RCANFD_EXTCLK, /* Externally input clock */ -}; - struct rcar_canfd_global; struct rcar_canfd_hw_info { @@ -545,8 +539,8 @@ struct rcar_canfd_global { struct platform_device *pdev; /* Respective platform device */ struct clk *clkp; /* Peripheral clock */ struct clk *can_clk; /* fCAN clock */ - enum rcar_canfd_fcanclk fcan; /* CANFD or Ext clock */ unsigned long channels_mask; /* Enabled channels mask */ + bool extclk; /* CANFD or Ext clock */ bool fdmode; /* CAN FD or Classical CAN only mode */ struct reset_control *rstc1; struct reset_control *rstc2; @@ -633,28 +627,28 @@ static inline void rcar_canfd_update(u32 mask, u32 val, u32 __iomem *reg) static inline u32 rcar_canfd_read(void __iomem *base, u32 offset) { - return readl(base + (offset)); + return readl(base + offset); } static inline void rcar_canfd_write(void __iomem *base, u32 offset, u32 val) { - writel(val, base + (offset)); + writel(val, base + offset); } static void rcar_canfd_set_bit(void __iomem *base, u32 reg, u32 val) { - rcar_canfd_update(val, val, base + (reg)); + rcar_canfd_update(val, val, base + reg); } static void rcar_canfd_clear_bit(void __iomem *base, u32 reg, u32 val) { - rcar_canfd_update(val, 0, base + (reg)); + rcar_canfd_update(val, 0, base + reg); } static void rcar_canfd_update_bit(void __iomem *base, u32 reg, u32 mask, u32 val) { - rcar_canfd_update(mask, val, base + (reg)); + rcar_canfd_update(mask, val, base + reg); } static void rcar_canfd_get_data(struct rcar_canfd_channel *priv, @@ -665,7 +659,7 @@ static void rcar_canfd_get_data(struct rcar_canfd_channel *priv, lwords = DIV_ROUND_UP(cf->len, sizeof(u32)); for (i = 0; i < lwords; i++) *((u32 *)cf->data + i) = - rcar_canfd_read(priv->base, off + (i * sizeof(u32))); + rcar_canfd_read(priv->base, off + i * sizeof(u32)); } static void rcar_canfd_put_data(struct rcar_canfd_channel *priv, @@ -675,7 +669,7 @@ static void rcar_canfd_put_data(struct rcar_canfd_channel *priv, lwords = DIV_ROUND_UP(cf->len, sizeof(u32)); for (i = 0; i < lwords; i++) - rcar_canfd_write(priv->base, off + (i * sizeof(u32)), + rcar_canfd_write(priv->base, off + i * sizeof(u32), *((u32 *)cf->data + i)); } @@ -777,7 +771,7 @@ static void rcar_canfd_configure_controller(struct rcar_canfd_global *gpriv) cfg |= RCANFD_GCFG_CMPOC; /* Set External Clock if selected */ - if (gpriv->fcan != RCANFD_CANFDCLK) + if (gpriv->extclk) cfg |= RCANFD_GCFG_DCS; rcar_canfd_set_bit(gpriv->base, RCANFD_GCFG, cfg); @@ -1941,16 +1935,12 @@ static int rcar_canfd_probe(struct platform_device *pdev) return dev_err_probe(dev, PTR_ERR(gpriv->can_clk), "cannot get canfd clock\n"); - gpriv->fcan = RCANFD_CANFDCLK; - + /* CANFD clock may be further divided within the IP */ + fcan_freq = clk_get_rate(gpriv->can_clk) / info->postdiv; } else { - gpriv->fcan = RCANFD_EXTCLK; + fcan_freq = clk_get_rate(gpriv->can_clk); + gpriv->extclk = true; } - fcan_freq = clk_get_rate(gpriv->can_clk); - - if (gpriv->fcan == RCANFD_CANFDCLK) - /* CANFD clock is further divided by (1/2) within the IP */ - fcan_freq /= info->postdiv; addr = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(addr)) { @@ -2059,8 +2049,9 @@ static int rcar_canfd_probe(struct platform_device *pdev) } platform_set_drvdata(pdev, gpriv); - dev_info(dev, "global operational state (clk %d, fdmode %d)\n", - gpriv->fcan, gpriv->fdmode); + dev_info(dev, "global operational state (%s clk, %s mode)\n", + gpriv->extclk ? "ext" : "canfd", + gpriv->fdmode ? "fd" : "classical"); return 0; fail_channel: |