diff options
| -rw-r--r-- | arch/arm/mach-imx/mach-imx6q.c | 5 | ||||
| -rw-r--r-- | drivers/clk/clk-divider.c | 29 | ||||
| -rw-r--r-- | drivers/clk/clk.c | 27 | ||||
| -rw-r--r-- | drivers/clk/qcom/gcc-msm8960.c | 13 | ||||
| -rw-r--r-- | drivers/clk/qcom/lcc-ipq806x.c | 1 | ||||
| -rw-r--r-- | drivers/clk/qcom/lcc-msm8960.c | 7 | ||||
| -rw-r--r-- | drivers/clk/ti/fapll.c | 6 | ||||
| -rw-r--r-- | include/linux/clk.h | 18 | ||||
| -rw-r--r-- | sound/soc/fsl/fsl_spdif.c | 4 | ||||
| -rw-r--r-- | sound/soc/kirkwood/kirkwood-i2s.c | 2 |
10 files changed, 83 insertions, 29 deletions
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index 4ad6e473cf83..9de3412af406 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -211,8 +211,9 @@ static void __init imx6q_1588_init(void) * set bit IOMUXC_GPR1[21]. Or the PTP clock must be from pad * (external OSC), and we need to clear the bit. */ - clksel = ptp_clk == enet_ref ? IMX6Q_GPR1_ENET_CLK_SEL_ANATOP : - IMX6Q_GPR1_ENET_CLK_SEL_PAD; + clksel = clk_is_match(ptp_clk, enet_ref) ? + IMX6Q_GPR1_ENET_CLK_SEL_ANATOP : + IMX6Q_GPR1_ENET_CLK_SEL_PAD; gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr"); if (!IS_ERR(gpr)) regmap_update_bits(gpr, IOMUXC_GPR1, diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c index db7f8bce7467..25006a8bb8e6 100644 --- a/drivers/clk/clk-divider.c +++ b/drivers/clk/clk-divider.c @@ -144,12 +144,6 @@ static unsigned long clk_divider_recalc_rate(struct clk_hw *hw, divider->flags); } -/* - * The reverse of DIV_ROUND_UP: The maximum number which - * divided by m is r - */ -#define MULT_ROUND_UP(r, m) ((r) * (m) + (m) - 1) - static bool _is_valid_table_div(const struct clk_div_table *table, unsigned int div) { @@ -225,19 +219,24 @@ static int _div_round_closest(const struct clk_div_table *table, unsigned long parent_rate, unsigned long rate, unsigned long flags) { - int up, down, div; + int up, down; + unsigned long up_rate, down_rate; - up = down = div = DIV_ROUND_CLOSEST(parent_rate, rate); + up = DIV_ROUND_UP(parent_rate, rate); + down = parent_rate / rate; if (flags & CLK_DIVIDER_POWER_OF_TWO) { - up = __roundup_pow_of_two(div); - down = __rounddown_pow_of_two(div); + up = __roundup_pow_of_two(up); + down = __rounddown_pow_of_two(down); } else if (table) { - up = _round_up_table(table, div); - down = _round_down_table(table, div); + up = _round_up_table(table, up); + down = _round_down_table(table, down); } - return (up - div) <= (div - down) ? up : down; + up_rate = DIV_ROUND_UP(parent_rate, up); + down_rate = DIV_ROUND_UP(parent_rate, down); + + return (rate - up_rate) <= (down_rate - rate) ? up : down; } static int _div_round(const struct clk_div_table *table, @@ -313,7 +312,7 @@ static int clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate, return i; } parent_rate = __clk_round_rate(__clk_get_parent(hw->clk), - MULT_ROUND_UP(rate, i)); + rate * i); now = DIV_ROUND_UP(parent_rate, i); if (_is_best_div(rate, now, best, flags)) { bestdiv = i; @@ -353,7 +352,7 @@ static long clk_divider_round_rate(struct clk_hw *hw, unsigned long rate, bestdiv = readl(divider->reg) >> divider->shift; bestdiv &= div_mask(divider->width); bestdiv = _get_div(divider->table, bestdiv, divider->flags); - return bestdiv; + return DIV_ROUND_UP(*prate, bestdiv); } return divider_round_rate(hw, rate, prate, divider->table, diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index eb0152961d3c..237f23f68bfc 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -1350,7 +1350,6 @@ static unsigned long clk_core_get_rate(struct clk_core *clk) return rate; } -EXPORT_SYMBOL_GPL(clk_core_get_rate); /** * clk_get_rate - return the rate of clk @@ -2171,6 +2170,32 @@ int clk_get_phase(struct clk *clk) } /** + * clk_is_match - check if two clk's point to the same hardware clock + * @p: clk compared against q + * @q: clk compared against p + * + * Returns true if the two struct clk pointers both point to the same hardware + * clock node. Put differently, returns true if struct clk *p and struct clk *q + * share the same struct clk_core object. + * + * Returns false otherwise. Note that two NULL clks are treated as matching. + */ +bool clk_is_match(const struct clk *p, const struct clk *q) +{ + /* trivial case: identical struct clk's or both NULL */ + if (p == q) + return true; + + /* true if clk->core pointers match. Avoid derefing garbage */ + if (!IS_ERR_OR_NULL(p) && !IS_ERR_OR_NULL(q)) + if (p->core == q->core) + return true; + + return false; +} +EXPORT_SYMBOL_GPL(clk_is_match); + +/** * __clk_init - initialize the data structures in a struct clk * @dev: device initializing this clk, placeholder for now * @clk: clk being initialized diff --git a/drivers/clk/qcom/gcc-msm8960.c b/drivers/clk/qcom/gcc-msm8960.c index b0b562b9ce0e..e60feffc10a1 100644 --- a/drivers/clk/qcom/gcc-msm8960.c +++ b/drivers/clk/qcom/gcc-msm8960.c @@ -48,6 +48,17 @@ static struct clk_pll pll3 = { }, }; +static struct clk_regmap pll4_vote = { + .enable_reg = 0x34c0, + .enable_mask = BIT(4), + .hw.init = &(struct clk_init_data){ + .name = "pll4_vote", + .parent_names = (const char *[]){ "pll4" }, + .num_parents = 1, + .ops = &clk_pll_vote_ops, + }, +}; + static struct clk_pll pll8 = { .l_reg = 0x3144, .m_reg = 0x3148, @@ -3023,6 +3034,7 @@ static struct clk_branch rpm_msg_ram_h_clk = { static struct clk_regmap *gcc_msm8960_clks[] = { [PLL3] = &pll3.clkr, + [PLL4_VOTE] = &pll4_vote, [PLL8] = &pll8.clkr, [PLL8_VOTE] = &pll8_vote, [PLL14] = &pll14.clkr, @@ -3247,6 +3259,7 @@ static const struct qcom_reset_map gcc_msm8960_resets[] = { static struct clk_regmap *gcc_apq8064_clks[] = { [PLL3] = &pll3.clkr, + [PLL4_VOTE] = &pll4_vote, [PLL8] = &pll8.clkr, [PLL8_VOTE] = &pll8_vote, [PLL14] = &pll14.clkr, diff --git a/drivers/clk/qcom/lcc-ipq806x.c b/drivers/clk/qcom/lcc-ipq806x.c index 121ffde25dc3..c9ff27b4648b 100644 --- a/drivers/clk/qcom/lcc-ipq806x.c +++ b/drivers/clk/qcom/lcc-ipq806x.c @@ -462,7 +462,6 @@ static struct platform_driver lcc_ipq806x_driver = { .remove = lcc_ipq806x_remove, .driver = { .name = "lcc-ipq806x", - .owner = THIS_MODULE, .of_match_table = lcc_ipq806x_match_table, }, }; diff --git a/drivers/clk/qcom/lcc-msm8960.c b/drivers/clk/qcom/lcc-msm8960.c index a75a408cfccd..e2c863295f00 100644 --- a/drivers/clk/qcom/lcc-msm8960.c +++ b/drivers/clk/qcom/lcc-msm8960.c @@ -417,8 +417,8 @@ static struct clk_rcg slimbus_src = { .mnctr_en_bit = 8, .mnctr_reset_bit = 7, .mnctr_mode_shift = 5, - .n_val_shift = 16, - .m_val_shift = 16, + .n_val_shift = 24, + .m_val_shift = 8, .width = 8, }, .p = { @@ -547,7 +547,7 @@ static int lcc_msm8960_probe(struct platform_device *pdev) return PTR_ERR(regmap); /* Use the correct frequency plan depending on speed of PLL4 */ - val = regmap_read(regmap, 0x4, &val); + regmap_read(regmap, 0x4, &val); if (val == 0x12) { slimbus_src.freq_tbl = clk_tbl_aif_osr_492; mi2s_osr_src.freq_tbl = clk_tbl_aif_osr_492; @@ -574,7 +574,6 @@ static struct platform_driver lcc_msm8960_driver = { .remove = lcc_msm8960_remove, .driver = { .name = "lcc-msm8960", - .owner = THIS_MODULE, .of_match_table = lcc_msm8960_match_table, }, }; diff --git a/drivers/clk/ti/fapll.c b/drivers/clk/ti/fapll.c index 6ef89639a9f6..d21640634adf 100644 --- a/drivers/clk/ti/fapll.c +++ b/drivers/clk/ti/fapll.c @@ -84,7 +84,7 @@ static int ti_fapll_enable(struct clk_hw *hw) struct fapll_data *fd = to_fapll(hw); u32 v = readl_relaxed(fd->base); - v |= (1 << FAPLL_MAIN_PLLEN); + v |= FAPLL_MAIN_PLLEN; writel_relaxed(v, fd->base); return 0; @@ -95,7 +95,7 @@ static void ti_fapll_disable(struct clk_hw *hw) struct fapll_data *fd = to_fapll(hw); u32 v = readl_relaxed(fd->base); - v &= ~(1 << FAPLL_MAIN_PLLEN); + v &= ~FAPLL_MAIN_PLLEN; writel_relaxed(v, fd->base); } @@ -104,7 +104,7 @@ static int ti_fapll_is_enabled(struct clk_hw *hw) struct fapll_data *fd = to_fapll(hw); u32 v = readl_relaxed(fd->base); - return v & (1 << FAPLL_MAIN_PLLEN); + return v & FAPLL_MAIN_PLLEN; } static unsigned long ti_fapll_recalc_rate(struct clk_hw *hw, diff --git a/include/linux/clk.h b/include/linux/clk.h index 8381bbfbc308..68c16a6bedb3 100644 --- a/include/linux/clk.h +++ b/include/linux/clk.h @@ -125,6 +125,19 @@ int clk_set_phase(struct clk *clk, int degrees); */ int clk_get_phase(struct clk *clk); +/** + * clk_is_match - check if two clk's point to the same hardware clock + * @p: clk compared against q + * @q: clk compared against p + * + * Returns true if the two struct clk pointers both point to the same hardware + * clock node. Put differently, returns true if struct clk *p and struct clk *q + * share the same struct clk_core object. + * + * Returns false otherwise. Note that two NULL clks are treated as matching. + */ +bool clk_is_match(const struct clk *p, const struct clk *q); + #else static inline long clk_get_accuracy(struct clk *clk) @@ -142,6 +155,11 @@ static inline long clk_get_phase(struct clk *clk) return -ENOTSUPP; } +static inline bool clk_is_match(const struct clk *p, const struct clk *q) +{ + return p == q; +} + #endif /** diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c index 75870c0ea2c9..91eb3aef7f02 100644 --- a/sound/soc/fsl/fsl_spdif.c +++ b/sound/soc/fsl/fsl_spdif.c @@ -1049,7 +1049,7 @@ static u32 fsl_spdif_txclk_caldiv(struct fsl_spdif_priv *spdif_priv, enum spdif_txrate index, bool round) { const u32 rate[] = { 32000, 44100, 48000, 96000, 192000 }; - bool is_sysclk = clk == spdif_priv->sysclk; + bool is_sysclk = clk_is_match(clk, spdif_priv->sysclk); u64 rate_ideal, rate_actual, sub; u32 sysclk_dfmin, sysclk_dfmax; u32 txclk_df, sysclk_df, arate; @@ -1143,7 +1143,7 @@ static int fsl_spdif_probe_txclk(struct fsl_spdif_priv *spdif_priv, spdif_priv->txclk_src[index], rate[index]); dev_dbg(&pdev->dev, "use txclk df %d for %dHz sample rate\n", spdif_priv->txclk_df[index], rate[index]); - if (spdif_priv->txclk[index] == spdif_priv->sysclk) + if (clk_is_match(spdif_priv->txclk[index], spdif_priv->sysclk)) dev_dbg(&pdev->dev, "use sysclk df %d for %dHz sample rate\n", spdif_priv->sysclk_df[index], rate[index]); dev_dbg(&pdev->dev, "the best rate for %dHz sample rate is %dHz\n", diff --git a/sound/soc/kirkwood/kirkwood-i2s.c b/sound/soc/kirkwood/kirkwood-i2s.c index def7d8260c4e..d19483081f9b 100644 --- a/sound/soc/kirkwood/kirkwood-i2s.c +++ b/sound/soc/kirkwood/kirkwood-i2s.c @@ -579,7 +579,7 @@ static int kirkwood_i2s_dev_probe(struct platform_device *pdev) if (PTR_ERR(priv->extclk) == -EPROBE_DEFER) return -EPROBE_DEFER; } else { - if (priv->extclk == priv->clk) { + if (clk_is_match(priv->extclk, priv->clk)) { devm_clk_put(&pdev->dev, priv->extclk); priv->extclk = ERR_PTR(-EINVAL); } else { |