diff options
Diffstat (limited to 'drivers/clk')
| -rw-r--r-- | drivers/clk/renesas/clk-rcar-gen3.c | 86 |
1 files changed, 43 insertions, 43 deletions
diff --git a/drivers/clk/renesas/clk-rcar-gen3.c b/drivers/clk/renesas/clk-rcar-gen3.c index 49ab9134af..7b42e28e83 100644 --- a/drivers/clk/renesas/clk-rcar-gen3.c +++ b/drivers/clk/renesas/clk-rcar-gen3.c @@ -153,6 +153,30 @@ static int gen3_clk_disable(struct clk *clk) return renesas_clk_endisable(clk, priv->base, priv->info, false); } +static u64 gen3_clk_get_rate64(struct clk *clk); + +static u64 gen3_clk_get_rate64_pll_mul_reg(struct gen3_clk_priv *priv, + struct clk *parent, + const struct cpg_core_clk *core, + u32 mul_reg, u32 mult, u32 div, + char *name) +{ + u32 value; + u64 rate; + + if (mul_reg) { + value = readl(priv->base + mul_reg); + mult = (((value >> 24) & 0x7f) + 1) * 2; + div = 1; + } + + rate = (gen3_clk_get_rate64(parent) * mult) / div; + + debug("%s[%i] %s clk: parent=%i mult=%u div=%u => rate=%llu\n", + __func__, __LINE__, name, core->parent, mult, div, rate); + return rate; +} + static u64 gen3_clk_get_rate64(struct clk *clk) { struct gen3_clk_priv *priv = dev_get_priv(clk->dev); @@ -161,7 +185,7 @@ static u64 gen3_clk_get_rate64(struct clk *clk) const struct cpg_core_clk *core; const struct rcar_gen3_cpg_pll_config *pll_config = priv->cpg_pll_config; - u32 value, mult, div, prediv, postdiv; + u32 value, div, prediv, postdiv; u64 rate = 0; int i, ret; @@ -203,60 +227,36 @@ static u64 gen3_clk_get_rate64(struct clk *clk) return -EINVAL; case CLK_TYPE_GEN3_MAIN: - rate = gen3_clk_get_rate64(&parent) / pll_config->extal_div; - debug("%s[%i] MAIN clk: parent=%i extal_div=%i => rate=%llu\n", - __func__, __LINE__, - core->parent, pll_config->extal_div, rate); - return rate; + return gen3_clk_get_rate64_pll_mul_reg(priv, &parent, core, + 0, 1, pll_config->extal_div, + "MAIN"); case CLK_TYPE_GEN3_PLL0: - value = readl(priv->base + CPG_PLL0CR); - mult = (((value >> 24) & 0x7f) + 1) * 2; - rate = gen3_clk_get_rate64(&parent) * mult; - debug("%s[%i] PLL0 clk: parent=%i mult=%u => rate=%llu\n", - __func__, __LINE__, core->parent, mult, rate); - return rate; + return gen3_clk_get_rate64_pll_mul_reg(priv, &parent, core, + CPG_PLL0CR, 0, 0, "PLL0"); case CLK_TYPE_GEN3_PLL1: - rate = gen3_clk_get_rate64(&parent) * pll_config->pll1_mult; - rate /= pll_config->pll1_div; - debug("%s[%i] PLL1 clk: parent=%i mul=%i div=%i => rate=%llu\n", - __func__, __LINE__, - core->parent, pll_config->pll1_mult, - pll_config->pll1_div, rate); - return rate; + return gen3_clk_get_rate64_pll_mul_reg(priv, &parent, core, + 0, pll_config->pll1_mult, + pll_config->pll1_div, "PLL1"); case CLK_TYPE_GEN3_PLL2: - value = readl(priv->base + CPG_PLL2CR); - mult = (((value >> 24) & 0x7f) + 1) * 2; - rate = gen3_clk_get_rate64(&parent) * mult; - debug("%s[%i] PLL2 clk: parent=%i mult=%u => rate=%llu\n", - __func__, __LINE__, core->parent, mult, rate); - return rate; + return gen3_clk_get_rate64_pll_mul_reg(priv, &parent, core, + CPG_PLL2CR, 0, 0, "PLL2"); case CLK_TYPE_GEN3_PLL3: - rate = gen3_clk_get_rate64(&parent) * pll_config->pll3_mult; - rate /= pll_config->pll3_div; - debug("%s[%i] PLL3 clk: parent=%i mul=%i div=%i => rate=%llu\n", - __func__, __LINE__, - core->parent, pll_config->pll3_mult, - pll_config->pll3_div, rate); - return rate; + return gen3_clk_get_rate64_pll_mul_reg(priv, &parent, core, + 0, pll_config->pll3_mult, + pll_config->pll3_div, "PLL3"); case CLK_TYPE_GEN3_PLL4: - value = readl(priv->base + CPG_PLL4CR); - mult = (((value >> 24) & 0x7f) + 1) * 2; - rate = gen3_clk_get_rate64(&parent) * mult; - debug("%s[%i] PLL4 clk: parent=%i mult=%u => rate=%llu\n", - __func__, __LINE__, core->parent, mult, rate); - return rate; + return gen3_clk_get_rate64_pll_mul_reg(priv, &parent, core, + CPG_PLL4CR, 0, 0, "PLL4"); case CLK_TYPE_FF: - rate = (gen3_clk_get_rate64(&parent) * core->mult) / core->div; - debug("%s[%i] FIXED clk: parent=%i mul=%i div=%i => rate=%llu\n", - __func__, __LINE__, - core->parent, core->mult, core->div, rate); - return rate; + return gen3_clk_get_rate64_pll_mul_reg(priv, &parent, core, + 0, core->mult, core->div, + "FIXED"); case CLK_TYPE_GEN3_MDSEL: div = (core->div >> (priv->sscg ? 16 : 0)) & 0xffff; |