Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1114 insertions, 0 deletions

diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
new file mode 100644
index 000000000..a91d97cec
--- /dev/null
+++ b/drivers/clk/qcom/clk-alpha-pll.c
@@ -0,0 +1,1114 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2015, 2018, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/kernel.h>
+#include <linux/export.h>
+#include <linux/clk-provider.h>
+#include <linux/regmap.h>
+#include <linux/delay.h>
+
+#include "clk-alpha-pll.h"
+#include "common.h"
+
+#define PLL_MODE(p)		((p)->offset + 0x0)
+# define PLL_OUTCTRL		BIT(0)
+# define PLL_BYPASSNL		BIT(1)
+# define PLL_RESET_N		BIT(2)
+# define PLL_OFFLINE_REQ	BIT(7)
+# define PLL_LOCK_COUNT_SHIFT	8
+# define PLL_LOCK_COUNT_MASK	0x3f
+# define PLL_BIAS_COUNT_SHIFT	14
+# define PLL_BIAS_COUNT_MASK	0x3f
+# define PLL_VOTE_FSM_ENA	BIT(20)
+# define PLL_FSM_ENA		BIT(20)
+# define PLL_VOTE_FSM_RESET	BIT(21)
+# define PLL_UPDATE		BIT(22)
+# define PLL_UPDATE_BYPASS	BIT(23)
+# define PLL_OFFLINE_ACK	BIT(28)
+# define ALPHA_PLL_ACK_LATCH	BIT(29)
+# define PLL_ACTIVE_FLAG	BIT(30)
+# define PLL_LOCK_DET		BIT(31)
+
+#define PLL_L_VAL(p)		((p)->offset + (p)->regs[PLL_OFF_L_VAL])
+#define PLL_ALPHA_VAL(p)	((p)->offset + (p)->regs[PLL_OFF_ALPHA_VAL])
+#define PLL_ALPHA_VAL_U(p)	((p)->offset + (p)->regs[PLL_OFF_ALPHA_VAL_U])
+
+#define PLL_USER_CTL(p)		((p)->offset + (p)->regs[PLL_OFF_USER_CTL])
+# define PLL_POST_DIV_SHIFT	8
+# define PLL_POST_DIV_MASK(p)	GENMASK((p)->width, 0)
+# define PLL_ALPHA_EN		BIT(24)
+# define PLL_ALPHA_MODE		BIT(25)
+# define PLL_VCO_SHIFT		20
+# define PLL_VCO_MASK		0x3
+
+#define PLL_USER_CTL_U(p)	((p)->offset + (p)->regs[PLL_OFF_USER_CTL_U])
+
+#define PLL_CONFIG_CTL(p)	((p)->offset + (p)->regs[PLL_OFF_CONFIG_CTL])
+#define PLL_CONFIG_CTL_U(p)	((p)->offset + (p)->regs[PLL_OFF_CONFIG_CTL_U])
+#define PLL_TEST_CTL(p)		((p)->offset + (p)->regs[PLL_OFF_TEST_CTL])
+#define PLL_TEST_CTL_U(p)	((p)->offset + (p)->regs[PLL_OFF_TEST_CTL_U])
+#define PLL_STATUS(p)		((p)->offset + (p)->regs[PLL_OFF_STATUS])
+#define PLL_OPMODE(p)		((p)->offset + (p)->regs[PLL_OFF_OPMODE])
+#define PLL_FRAC(p)		((p)->offset + (p)->regs[PLL_OFF_FRAC])
+
+const u8 clk_alpha_pll_regs[][PLL_OFF_MAX_REGS] = {
+	[CLK_ALPHA_PLL_TYPE_DEFAULT] =  {
+		[PLL_OFF_L_VAL] = 0x04,
+		[PLL_OFF_ALPHA_VAL] = 0x08,
+		[PLL_OFF_ALPHA_VAL_U] = 0x0c,
+		[PLL_OFF_USER_CTL] = 0x10,
+		[PLL_OFF_USER_CTL_U] = 0x14,
+		[PLL_OFF_CONFIG_CTL] = 0x18,
+		[PLL_OFF_TEST_CTL] = 0x1c,
+		[PLL_OFF_TEST_CTL_U] = 0x20,
+		[PLL_OFF_STATUS] = 0x24,
+	},
+	[CLK_ALPHA_PLL_TYPE_HUAYRA] =  {
+		[PLL_OFF_L_VAL] = 0x04,
+		[PLL_OFF_ALPHA_VAL] = 0x08,
+		[PLL_OFF_USER_CTL] = 0x10,
+		[PLL_OFF_CONFIG_CTL] = 0x14,
+		[PLL_OFF_CONFIG_CTL_U] = 0x18,
+		[PLL_OFF_TEST_CTL] = 0x1c,
+		[PLL_OFF_TEST_CTL_U] = 0x20,
+		[PLL_OFF_STATUS] = 0x24,
+	},
+	[CLK_ALPHA_PLL_TYPE_BRAMMO] =  {
+		[PLL_OFF_L_VAL] = 0x04,
+		[PLL_OFF_ALPHA_VAL] = 0x08,
+		[PLL_OFF_ALPHA_VAL_U] = 0x0c,
+		[PLL_OFF_USER_CTL] = 0x10,
+		[PLL_OFF_CONFIG_CTL] = 0x18,
+		[PLL_OFF_TEST_CTL] = 0x1c,
+		[PLL_OFF_STATUS] = 0x24,
+	},
+	[CLK_ALPHA_PLL_TYPE_FABIA] =  {
+		[PLL_OFF_L_VAL] = 0x04,
+		[PLL_OFF_USER_CTL] = 0x0c,
+		[PLL_OFF_USER_CTL_U] = 0x10,
+		[PLL_OFF_CONFIG_CTL] = 0x14,
+		[PLL_OFF_CONFIG_CTL_U] = 0x18,
+		[PLL_OFF_TEST_CTL] = 0x1c,
+		[PLL_OFF_TEST_CTL_U] = 0x20,
+		[PLL_OFF_STATUS] = 0x24,
+		[PLL_OFF_OPMODE] = 0x2c,
+		[PLL_OFF_FRAC] = 0x38,
+	},
+};
+EXPORT_SYMBOL_GPL(clk_alpha_pll_regs);
+
+/*
+ * Even though 40 bits are present, use only 32 for ease of calculation.
+ */
+#define ALPHA_REG_BITWIDTH	40
+#define ALPHA_REG_16BIT_WIDTH	16
+#define ALPHA_BITWIDTH		32U
+#define ALPHA_SHIFT(w)		min(w, ALPHA_BITWIDTH)
+
+#define PLL_HUAYRA_M_WIDTH		8
+#define PLL_HUAYRA_M_SHIFT		8
+#define PLL_HUAYRA_M_MASK		0xff
+#define PLL_HUAYRA_N_SHIFT		0
+#define PLL_HUAYRA_N_MASK		0xff
+#define PLL_HUAYRA_ALPHA_WIDTH		16
+
+#define FABIA_OPMODE_STANDBY	0x0
+#define FABIA_OPMODE_RUN	0x1
+
+#define FABIA_PLL_OUT_MASK	0x7
+#define FABIA_PLL_RATE_MARGIN	500
+
+#define pll_alpha_width(p)					\
+		((PLL_ALPHA_VAL_U(p) - PLL_ALPHA_VAL(p) == 4) ?	\
+				 ALPHA_REG_BITWIDTH : ALPHA_REG_16BIT_WIDTH)
+
+#define pll_has_64bit_config(p)	((PLL_CONFIG_CTL_U(p) - PLL_CONFIG_CTL(p)) == 4)
+
+#define to_clk_alpha_pll(_hw) container_of(to_clk_regmap(_hw), \
+					   struct clk_alpha_pll, clkr)
+
+#define to_clk_alpha_pll_postdiv(_hw) container_of(to_clk_regmap(_hw), \
+					   struct clk_alpha_pll_postdiv, clkr)
+
+static int wait_for_pll(struct clk_alpha_pll *pll, u32 mask, bool inverse,
+			const char *action)
+{
+	u32 val;
+	int count;
+	int ret;
+	const char *name = clk_hw_get_name(&pll->clkr.hw);
+
+	ret = regmap_read(pll->clkr.regmap, PLL_MODE(pll), &val);
+	if (ret)
+		return ret;
+
+	for (count = 100; count > 0; count--) {
+		ret = regmap_read(pll->clkr.regmap, PLL_MODE(pll), &val);
+		if (ret)
+			return ret;
+		if (inverse && !(val & mask))
+			return 0;
+		else if ((val & mask) == mask)
+			return 0;
+
+		udelay(1);
+	}
+
+	WARN(1, "%s failed to %s!\n", name, action);
+	return -ETIMEDOUT;
+}
+
+#define wait_for_pll_enable_active(pll) \
+	wait_for_pll(pll, PLL_ACTIVE_FLAG, 0, "enable")
+
+#define wait_for_pll_enable_lock(pll) \
+	wait_for_pll(pll, PLL_LOCK_DET, 0, "enable")
+
+#define wait_for_pll_disable(pll) \
+	wait_for_pll(pll, PLL_ACTIVE_FLAG, 1, "disable")
+
+#define wait_for_pll_offline(pll) \
+	wait_for_pll(pll, PLL_OFFLINE_ACK, 0, "offline")
+
+#define wait_for_pll_update(pll) \
+	wait_for_pll(pll, PLL_UPDATE, 1, "update")
+
+#define wait_for_pll_update_ack_set(pll) \
+	wait_for_pll(pll, ALPHA_PLL_ACK_LATCH, 0, "update_ack_set")
+
+#define wait_for_pll_update_ack_clear(pll) \
+	wait_for_pll(pll, ALPHA_PLL_ACK_LATCH, 1, "update_ack_clear")
+
+void clk_alpha_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
+			     const struct alpha_pll_config *config)
+{
+	u32 val, mask;
+
+	regmap_write(regmap, PLL_L_VAL(pll), config->l);
+	regmap_write(regmap, PLL_ALPHA_VAL(pll), config->alpha);
+	regmap_write(regmap, PLL_CONFIG_CTL(pll), config->config_ctl_val);
+
+	if (pll_has_64bit_config(pll))
+		regmap_write(regmap, PLL_CONFIG_CTL_U(pll),
+			     config->config_ctl_hi_val);
+
+	if (pll_alpha_width(pll) > 32)
+		regmap_write(regmap, PLL_ALPHA_VAL_U(pll), config->alpha_hi);
+
+	val = config->main_output_mask;
+	val |= config->aux_output_mask;
+	val |= config->aux2_output_mask;
+	val |= config->early_output_mask;
+	val |= config->pre_div_val;
+	val |= config->post_div_val;
+	val |= config->vco_val;
+	val |= config->alpha_en_mask;
+	val |= config->alpha_mode_mask;
+
+	mask = config->main_output_mask;
+	mask |= config->aux_output_mask;
+	mask |= config->aux2_output_mask;
+	mask |= config->early_output_mask;
+	mask |= config->pre_div_mask;
+	mask |= config->post_div_mask;
+	mask |= config->vco_mask;
+
+	regmap_update_bits(regmap, PLL_USER_CTL(pll), mask, val);
+
+	if (pll->flags & SUPPORTS_FSM_MODE)
+		qcom_pll_set_fsm_mode(regmap, PLL_MODE(pll), 6, 0);
+}
+
+static int clk_alpha_pll_hwfsm_enable(struct clk_hw *hw)
+{
+	int ret;
+	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+	u32 val;
+
+	ret = regmap_read(pll->clkr.regmap, PLL_MODE(pll), &val);
+	if (ret)
+		return ret;
+
+	val |= PLL_FSM_ENA;
+
+	if (pll->flags & SUPPORTS_OFFLINE_REQ)
+		val &= ~PLL_OFFLINE_REQ;
+
+	ret = regmap_write(pll->clkr.regmap, PLL_MODE(pll), val);
+	if (ret)
+		return ret;
+
+	/* Make sure enable request goes through before waiting for update */
+	mb();
+
+	return wait_for_pll_enable_active(pll);
+}
+
+static void clk_alpha_pll_hwfsm_disable(struct clk_hw *hw)
+{
+	int ret;
+	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+	u32 val;
+
+	ret = regmap_read(pll->clkr.regmap, PLL_MODE(pll), &val);
+	if (ret)
+		return;
+
+	if (pll->flags & SUPPORTS_OFFLINE_REQ) {
+		ret = regmap_update_bits(pll->clkr.regmap, PLL_MODE(pll),
+					 PLL_OFFLINE_REQ, PLL_OFFLINE_REQ);
+		if (ret)
+			return;
+
+		ret = wait_for_pll_offline(pll);
+		if (ret)
+			return;
+	}
+
+	/* Disable hwfsm */
+	ret = regmap_update_bits(pll->clkr.regmap, PLL_MODE(pll),
+				 PLL_FSM_ENA, 0);
+	if (ret)
+		return;
+
+	wait_for_pll_disable(pll);
+}
+
+static int pll_is_enabled(struct clk_hw *hw, u32 mask)
+{
+	int ret;
+	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+	u32 val;
+
+	ret = regmap_read(pll->clkr.regmap, PLL_MODE(pll), &val);
+	if (ret)
+		return ret;
+
+	return !!(val & mask);
+}
+
+static int clk_alpha_pll_hwfsm_is_enabled(struct clk_hw *hw)
+{
+	return pll_is_enabled(hw, PLL_ACTIVE_FLAG);
+}
+
+static int clk_alpha_pll_is_enabled(struct clk_hw *hw)
+{
+	return pll_is_enabled(hw, PLL_LOCK_DET);
+}
+
+static int clk_alpha_pll_enable(struct clk_hw *hw)
+{
+	int ret;
+	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+	u32 val, mask;
+
+	mask = PLL_OUTCTRL | PLL_RESET_N | PLL_BYPASSNL;
+	ret = regmap_read(pll->clkr.regmap, PLL_MODE(pll), &val);
+	if (ret)
+		return ret;
+
+	/* If in FSM mode, just vote for it */
+	if (val & PLL_VOTE_FSM_ENA) {
+		ret = clk_enable_regmap(hw);
+		if (ret)
+			return ret;
+		return wait_for_pll_enable_active(pll);
+	}
+
+	/* Skip if already enabled */
+	if ((val & mask) == mask)
+		return 0;
+
+	ret = regmap_update_bits(pll->clkr.regmap, PLL_MODE(pll),
+				 PLL_BYPASSNL, PLL_BYPASSNL);
+	if (ret)
+		return ret;
+
+	/*
+	 * H/W requires a 5us delay between disabling the bypass and
+	 * de-asserting the reset.
+	 */
+	mb();
+	udelay(5);
+
+	ret = regmap_update_bits(pll->clkr.regmap, PLL_MODE(pll),
+				 PLL_RESET_N, PLL_RESET_N);
+	if (ret)
+		return ret;
+
+	ret = wait_for_pll_enable_lock(pll);
+	if (ret)
+		return ret;
+
+	ret = regmap_update_bits(pll->clkr.regmap, PLL_MODE(pll),
+				 PLL_OUTCTRL, PLL_OUTCTRL);
+
+	/* Ensure that the write above goes through before returning. */
+	mb();
+	return ret;
+}
+
+static void clk_alpha_pll_disable(struct clk_hw *hw)
+{
+	int ret;
+	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+	u32 val, mask;
+
+	ret = regmap_read(pll->clkr.regmap, PLL_MODE(pll), &val);
+	if (ret)
+		return;
+
+	/* If in FSM mode, just unvote it */
+	if (val & PLL_VOTE_FSM_ENA) {
+		clk_disable_regmap(hw);
+		return;
+	}
+
+	mask = PLL_OUTCTRL;
+	regmap_update_bits(pll->clkr.regmap, PLL_MODE(pll), mask, 0);
+
+	/* Delay of 2 output clock ticks required until output is disabled */
+	mb();
+	udelay(1);
+
+	mask = PLL_RESET_N | PLL_BYPASSNL;
+	regmap_update_bits(pll->clkr.regmap, PLL_MODE(pll), mask, 0);
+}
+
+static unsigned long
+alpha_pll_calc_rate(u64 prate, u32 l, u32 a, u32 alpha_width)
+{
+	return (prate * l) + ((prate * a) >> ALPHA_SHIFT(alpha_width));
+}
+
+static unsigned long
+alpha_pll_round_rate(unsigned long rate, unsigned long prate, u32 *l, u64 *a,
+		     u32 alpha_width)
+{
+	u64 remainder;
+	u64 quotient;
+
+	quotient = rate;
+	remainder = do_div(quotient, prate);
+	*l = quotient;
+
+	if (!remainder) {
+		*a = 0;
+		return rate;
+	}
+
+	/* Upper ALPHA_BITWIDTH bits of Alpha */
+	quotient = remainder << ALPHA_SHIFT(alpha_width);
+
+	remainder = do_div(quotient, prate);
+
+	if (remainder)
+		quotient++;
+
+	*a = quotient;
+	return alpha_pll_calc_rate(prate, *l, *a, alpha_width);
+}
+
+static const struct pll_vco *
+alpha_pll_find_vco(const struct clk_alpha_pll *pll, unsigned long rate)
+{
+	const struct pll_vco *v = pll->vco_table;
+	const struct pll_vco *end = v + pll->num_vco;
+
+	for (; v < end; v++)
+		if (rate >= v->min_freq && rate <= v->max_freq)
+			return v;
+
+	return NULL;
+}
+
+static unsigned long
+clk_alpha_pll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
+{
+	u32 l, low, high, ctl;
+	u64 a = 0, prate = parent_rate;
+	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+	u32 alpha_width = pll_alpha_width(pll);
+
+	regmap_read(pll->clkr.regmap, PLL_L_VAL(pll), &l);
+
+	regmap_read(pll->clkr.regmap, PLL_USER_CTL(pll), &ctl);
+	if (ctl & PLL_ALPHA_EN) {
+		regmap_read(pll->clkr.regmap, PLL_ALPHA_VAL(pll), &low);
+		if (alpha_width > 32) {
+			regmap_read(pll->clkr.regmap, PLL_ALPHA_VAL_U(pll),
+				    &high);
+			a = (u64)high << 32 | low;
+		} else {
+			a = low & GENMASK(alpha_width - 1, 0);
+		}
+
+		if (alpha_width > ALPHA_BITWIDTH)
+			a >>= alpha_width - ALPHA_BITWIDTH;
+	}
+
+	return alpha_pll_calc_rate(prate, l, a, alpha_width);
+}
+
+
+static int __clk_alpha_pll_update_latch(struct clk_alpha_pll *pll)
+{
+	int ret;
+	u32 mode;
+
+	regmap_read(pll->clkr.regmap, PLL_MODE(pll), &mode);
+
+	/* Latch the input to the PLL */
+	regmap_update_bits(pll->clkr.regmap, PLL_MODE(pll), PLL_UPDATE,
+			   PLL_UPDATE);
+
+	/* Wait for 2 reference cycle before checking ACK bit */
+	udelay(1);
+
+	/*
+	 * PLL will latch the new L, Alpha and freq control word.
+	 * PLL will respond by raising PLL_ACK_LATCH output when new programming
+	 * has been latched in and PLL is being updated. When
+	 * UPDATE_LOGIC_BYPASS bit is not set, PLL_UPDATE will be cleared
+	 * automatically by hardware when PLL_ACK_LATCH is asserted by PLL.
+	 */
+	if (mode & PLL_UPDATE_BYPASS) {
+		ret = wait_for_pll_update_ack_set(pll);
+		if (ret)
+			return ret;
+
+		regmap_update_bits(pll->clkr.regmap, PLL_MODE(pll), PLL_UPDATE, 0);
+	} else {
+		ret = wait_for_pll_update(pll);
+		if (ret)
+			return ret;
+	}
+
+	ret = wait_for_pll_update_ack_clear(pll);
+	if (ret)
+		return ret;
+
+	/* Wait for PLL output to stabilize */
+	udelay(10);
+
+	return 0;
+}
+
+static int clk_alpha_pll_update_latch(struct clk_alpha_pll *pll,
+				      int (*is_enabled)(struct clk_hw *))
+{
+	if (!is_enabled(&pll->clkr.hw) ||
+	    !(pll->flags & SUPPORTS_DYNAMIC_UPDATE))
+		return 0;
+
+	return __clk_alpha_pll_update_latch(pll);
+}
+
+static int __clk_alpha_pll_set_rate(struct clk_hw *hw, unsigned long rate,
+				    unsigned long prate,
+				    int (*is_enabled)(struct clk_hw *))
+{
+	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+	const struct pll_vco *vco;
+	u32 l, alpha_width = pll_alpha_width(pll);
+	u64 a;
+
+	rate = alpha_pll_round_rate(rate, prate, &l, &a, alpha_width);
+	vco = alpha_pll_find_vco(pll, rate);
+	if (pll->vco_table && !vco) {
+		pr_err("alpha pll not in a valid vco range\n");
+		return -EINVAL;
+	}
+
+	regmap_write(pll->clkr.regmap, PLL_L_VAL(pll), l);
+
+	if (alpha_width > ALPHA_BITWIDTH)
+		a <<= alpha_width - ALPHA_BITWIDTH;
+
+	if (alpha_width > 32)
+		regmap_write(pll->clkr.regmap, PLL_ALPHA_VAL_U(pll), a >> 32);
+
+	regmap_write(pll->clkr.regmap, PLL_ALPHA_VAL(pll), a);
+
+	if (vco) {
+		regmap_update_bits(pll->clkr.regmap, PLL_USER_CTL(pll),
+				   PLL_VCO_MASK << PLL_VCO_SHIFT,
+				   vco->val << PLL_VCO_SHIFT);
+	}
+
+	regmap_update_bits(pll->clkr.regmap, PLL_USER_CTL(pll),
+			   PLL_ALPHA_EN, PLL_ALPHA_EN);
+
+	return clk_alpha_pll_update_latch(pll, is_enabled);
+}
+
+static int clk_alpha_pll_set_rate(struct clk_hw *hw, unsigned long rate,
+				  unsigned long prate)
+{
+	return __clk_alpha_pll_set_rate(hw, rate, prate,
+					clk_alpha_pll_is_enabled);
+}
+
+static int clk_alpha_pll_hwfsm_set_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long prate)
+{
+	return __clk_alpha_pll_set_rate(hw, rate, prate,
+					clk_alpha_pll_hwfsm_is_enabled);
+}
+
+static long clk_alpha_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+				     unsigned long *prate)
+{
+	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+	u32 l, alpha_width = pll_alpha_width(pll);
+	u64 a;
+	unsigned long min_freq, max_freq;
+
+	rate = alpha_pll_round_rate(rate, *prate, &l, &a, alpha_width);
+	if (!pll->vco_table || alpha_pll_find_vco(pll, rate))
+		return rate;
+
+	min_freq = pll->vco_table[0].min_freq;
+	max_freq = pll->vco_table[pll->num_vco - 1].max_freq;
+
+	return clamp(rate, min_freq, max_freq);
+}
+
+static unsigned long
+alpha_huayra_pll_calc_rate(u64 prate, u32 l, u32 a)
+{
+	/*
+	 * a contains 16 bit alpha_val in two’s compliment number in the range
+	 * of [-0.5, 0.5).
+	 */
+	if (a >= BIT(PLL_HUAYRA_ALPHA_WIDTH - 1))
+		l -= 1;
+
+	return (prate * l) + (prate * a >> PLL_HUAYRA_ALPHA_WIDTH);
+}
+
+static unsigned long
+alpha_huayra_pll_round_rate(unsigned long rate, unsigned long prate,
+			    u32 *l, u32 *a)
+{
+	u64 remainder;
+	u64 quotient;
+
+	quotient = rate;
+	remainder = do_div(quotient, prate);
+	*l = quotient;
+
+	if (!remainder) {
+		*a = 0;
+		return rate;
+	}
+
+	quotient = remainder << PLL_HUAYRA_ALPHA_WIDTH;
+	remainder = do_div(quotient, prate);
+
+	if (remainder)
+		quotient++;
+
+	/*
+	 * alpha_val should be in two’s compliment number in the range
+	 * of [-0.5, 0.5) so if quotient >= 0.5 then increment the l value
+	 * since alpha value will be subtracted in this case.
+	 */
+	if (quotient >= BIT(PLL_HUAYRA_ALPHA_WIDTH - 1))
+		*l += 1;
+
+	*a = quotient;
+	return alpha_huayra_pll_calc_rate(prate, *l, *a);
+}
+
+static unsigned long
+alpha_pll_huayra_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
+{
+	u64 rate = parent_rate, tmp;
+	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+	u32 l, alpha = 0, ctl, alpha_m, alpha_n;
+
+	regmap_read(pll->clkr.regmap, PLL_L_VAL(pll), &l);
+	regmap_read(pll->clkr.regmap, PLL_USER_CTL(pll), &ctl);
+
+	if (ctl & PLL_ALPHA_EN) {
+		regmap_read(pll->clkr.regmap, PLL_ALPHA_VAL(pll), &alpha);
+		/*
+		 * Depending upon alpha_mode, it can be treated as M/N value or
+		 * as a two’s compliment number. When alpha_mode=1,
+		 * pll_alpha_val<15:8>=M and pll_apla_val<7:0>=N
+		 *
+		 *		Fout=FIN*(L+(M/N))
+		 *
+		 * M is a signed number (-128 to 127) and N is unsigned
+		 * (0 to 255). M/N has to be within +/-0.5.
+		 *
+		 * When alpha_mode=0, it is a two’s compliment number in the
+		 * range [-0.5, 0.5).
+		 *
+		 *		Fout=FIN*(L+(alpha_val)/2^16)
+		 *
+		 * where alpha_val is two’s compliment number.
+		 */
+		if (!(ctl & PLL_ALPHA_MODE))
+			return alpha_huayra_pll_calc_rate(rate, l, alpha);
+
+		alpha_m = alpha >> PLL_HUAYRA_M_SHIFT & PLL_HUAYRA_M_MASK;
+		alpha_n = alpha >> PLL_HUAYRA_N_SHIFT & PLL_HUAYRA_N_MASK;
+
+		rate *= l;
+		tmp = parent_rate;
+		if (alpha_m >= BIT(PLL_HUAYRA_M_WIDTH - 1)) {
+			alpha_m = BIT(PLL_HUAYRA_M_WIDTH) - alpha_m;
+			tmp *= alpha_m;
+			do_div(tmp, alpha_n);
+			rate -= tmp;
+		} else {
+			tmp *= alpha_m;
+			do_div(tmp, alpha_n);
+			rate += tmp;
+		}
+
+		return rate;
+	}
+
+	return alpha_huayra_pll_calc_rate(rate, l, alpha);
+}
+
+static int alpha_pll_huayra_set_rate(struct clk_hw *hw, unsigned long rate,
+				     unsigned long prate)
+{
+	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+	u32 l, a, ctl, cur_alpha = 0;
+
+	rate = alpha_huayra_pll_round_rate(rate, prate, &l, &a);
+
+	regmap_read(pll->clkr.regmap, PLL_USER_CTL(pll), &ctl);
+
+	if (ctl & PLL_ALPHA_EN)
+		regmap_read(pll->clkr.regmap, PLL_ALPHA_VAL(pll), &cur_alpha);
+
+	/*
+	 * Huayra PLL supports PLL dynamic programming. User can change L_VAL,
+	 * without having to go through the power on sequence.
+	 */
+	if (clk_alpha_pll_is_enabled(hw)) {
+		if (cur_alpha != a) {
+			pr_err("clock needs to be gated %s\n",
+			       clk_hw_get_name(hw));
+			return -EBUSY;
+		}
+
+		regmap_write(pll->clkr.regmap, PLL_L_VAL(pll), l);
+		/* Ensure that the write above goes to detect L val change. */
+		mb();
+		return wait_for_pll_enable_lock(pll);
+	}
+
+	regmap_write(pll->clkr.regmap, PLL_L_VAL(pll), l);
+	regmap_write(pll->clkr.regmap, PLL_ALPHA_VAL(pll), a);
+
+	if (a == 0)
+		regmap_update_bits(pll->clkr.regmap, PLL_USER_CTL(pll),
+				   PLL_ALPHA_EN, 0x0);
+	else
+		regmap_update_bits(pll->clkr.regmap, PLL_USER_CTL(pll),
+				   PLL_ALPHA_EN | PLL_ALPHA_MODE, PLL_ALPHA_EN);
+
+	return 0;
+}
+
+static long alpha_pll_huayra_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *prate)
+{
+	u32 l, a;
+
+	return alpha_huayra_pll_round_rate(rate, *prate, &l, &a);
+}
+
+const struct clk_ops clk_alpha_pll_ops = {
+	.enable = clk_alpha_pll_enable,
+	.disable = clk_alpha_pll_disable,
+	.is_enabled = clk_alpha_pll_is_enabled,
+	.recalc_rate = clk_alpha_pll_recalc_rate,
+	.round_rate = clk_alpha_pll_round_rate,
+	.set_rate = clk_alpha_pll_set_rate,
+};
+EXPORT_SYMBOL_GPL(clk_alpha_pll_ops);
+
+const struct clk_ops clk_alpha_pll_huayra_ops = {
+	.enable = clk_alpha_pll_enable,
+	.disable = clk_alpha_pll_disable,
+	.is_enabled = clk_alpha_pll_is_enabled,
+	.recalc_rate = alpha_pll_huayra_recalc_rate,
+	.round_rate = alpha_pll_huayra_round_rate,
+	.set_rate = alpha_pll_huayra_set_rate,
+};
+EXPORT_SYMBOL_GPL(clk_alpha_pll_huayra_ops);
+
+const struct clk_ops clk_alpha_pll_hwfsm_ops = {
+	.enable = clk_alpha_pll_hwfsm_enable,
+	.disable = clk_alpha_pll_hwfsm_disable,
+	.is_enabled = clk_alpha_pll_hwfsm_is_enabled,
+	.recalc_rate = clk_alpha_pll_recalc_rate,
+	.round_rate = clk_alpha_pll_round_rate,
+	.set_rate = clk_alpha_pll_hwfsm_set_rate,
+};
+EXPORT_SYMBOL_GPL(clk_alpha_pll_hwfsm_ops);
+
+static unsigned long
+clk_alpha_pll_postdiv_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
+{
+	struct clk_alpha_pll_postdiv *pll = to_clk_alpha_pll_postdiv(hw);
+	u32 ctl;
+
+	regmap_read(pll->clkr.regmap, PLL_USER_CTL(pll), &ctl);
+
+	ctl >>= PLL_POST_DIV_SHIFT;
+	ctl &= PLL_POST_DIV_MASK(pll);
+
+	return parent_rate >> fls(ctl);
+}
+
+static const struct clk_div_table clk_alpha_div_table[] = {
+	{ 0x0, 1 },
+	{ 0x1, 2 },
+	{ 0x3, 4 },
+	{ 0x7, 8 },
+	{ 0xf, 16 },
+	{ }
+};
+
+static const struct clk_div_table clk_alpha_2bit_div_table[] = {
+	{ 0x0, 1 },
+	{ 0x1, 2 },
+	{ 0x3, 4 },
+	{ }
+};
+
+static long
+clk_alpha_pll_postdiv_round_rate(struct clk_hw *hw, unsigned long rate,
+				 unsigned long *prate)
+{
+	struct clk_alpha_pll_postdiv *pll = to_clk_alpha_pll_postdiv(hw);
+	const struct clk_div_table *table;
+
+	if (pll->width == 2)
+		table = clk_alpha_2bit_div_table;
+	else
+		table = clk_alpha_div_table;
+
+	return divider_round_rate(hw, rate, prate, table,
+				  pll->width, CLK_DIVIDER_POWER_OF_TWO);
+}
+
+static long
+clk_alpha_pll_postdiv_round_ro_rate(struct clk_hw *hw, unsigned long rate,
+				    unsigned long *prate)
+{
+	struct clk_alpha_pll_postdiv *pll = to_clk_alpha_pll_postdiv(hw);
+	u32 ctl, div;
+
+	regmap_read(pll->clkr.regmap, PLL_USER_CTL(pll), &ctl);
+
+	ctl >>= PLL_POST_DIV_SHIFT;
+	ctl &= BIT(pll->width) - 1;
+	div = 1 << fls(ctl);
+
+	if (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT)
+		*prate = clk_hw_round_rate(clk_hw_get_parent(hw), div * rate);
+
+	return DIV_ROUND_UP_ULL((u64)*prate, div);
+}
+
+static int clk_alpha_pll_postdiv_set_rate(struct clk_hw *hw, unsigned long rate,
+					  unsigned long parent_rate)
+{
+	struct clk_alpha_pll_postdiv *pll = to_clk_alpha_pll_postdiv(hw);
+	int div;
+
+	/* 16 -> 0xf, 8 -> 0x7, 4 -> 0x3, 2 -> 0x1, 1 -> 0x0 */
+	div = DIV_ROUND_UP_ULL((u64)parent_rate, rate) - 1;
+
+	return regmap_update_bits(pll->clkr.regmap, PLL_USER_CTL(pll),
+				  PLL_POST_DIV_MASK(pll) << PLL_POST_DIV_SHIFT,
+				  div << PLL_POST_DIV_SHIFT);
+}
+
+const struct clk_ops clk_alpha_pll_postdiv_ops = {
+	.recalc_rate = clk_alpha_pll_postdiv_recalc_rate,
+	.round_rate = clk_alpha_pll_postdiv_round_rate,
+	.set_rate = clk_alpha_pll_postdiv_set_rate,
+};
+EXPORT_SYMBOL_GPL(clk_alpha_pll_postdiv_ops);
+
+const struct clk_ops clk_alpha_pll_postdiv_ro_ops = {
+	.round_rate = clk_alpha_pll_postdiv_round_ro_rate,
+	.recalc_rate = clk_alpha_pll_postdiv_recalc_rate,
+};
+EXPORT_SYMBOL_GPL(clk_alpha_pll_postdiv_ro_ops);
+
+void clk_fabia_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
+			     const struct alpha_pll_config *config)
+{
+	u32 val, mask;
+
+	if (config->l)
+		regmap_write(regmap, PLL_L_VAL(pll), config->l);
+
+	if (config->alpha)
+		regmap_write(regmap, PLL_FRAC(pll), config->alpha);
+
+	if (config->config_ctl_val)
+		regmap_write(regmap, PLL_CONFIG_CTL(pll),
+						config->config_ctl_val);
+
+	if (config->post_div_mask) {
+		mask = config->post_div_mask;
+		val = config->post_div_val;
+		regmap_update_bits(regmap, PLL_USER_CTL(pll), mask, val);
+	}
+
+	regmap_update_bits(regmap, PLL_MODE(pll), PLL_UPDATE_BYPASS,
+							PLL_UPDATE_BYPASS);
+
+	regmap_update_bits(regmap, PLL_MODE(pll), PLL_RESET_N, PLL_RESET_N);
+}
+EXPORT_SYMBOL_GPL(clk_fabia_pll_configure);
+
+static int alpha_pll_fabia_enable(struct clk_hw *hw)
+{
+	int ret;
+	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+	u32 val, opmode_val;
+	struct regmap *regmap = pll->clkr.regmap;
+
+	ret = regmap_read(regmap, PLL_MODE(pll), &val);
+	if (ret)
+		return ret;
+
+	/* If in FSM mode, just vote for it */
+	if (val & PLL_VOTE_FSM_ENA) {
+		ret = clk_enable_regmap(hw);
+		if (ret)
+			return ret;
+		return wait_for_pll_enable_active(pll);
+	}
+
+	ret = regmap_read(regmap, PLL_OPMODE(pll), &opmode_val);
+	if (ret)
+		return ret;
+
+	/* Skip If PLL is already running */
+	if ((opmode_val & FABIA_OPMODE_RUN) && (val & PLL_OUTCTRL))
+		return 0;
+
+	ret = regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL, 0);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(regmap, PLL_OPMODE(pll), FABIA_OPMODE_STANDBY);
+	if (ret)
+		return ret;
+
+	ret = regmap_update_bits(regmap, PLL_MODE(pll), PLL_RESET_N,
+				 PLL_RESET_N);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(regmap, PLL_OPMODE(pll), FABIA_OPMODE_RUN);
+	if (ret)
+		return ret;
+
+	ret = wait_for_pll_enable_lock(pll);
+	if (ret)
+		return ret;
+
+	ret = regmap_update_bits(regmap, PLL_USER_CTL(pll),
+				 FABIA_PLL_OUT_MASK, FABIA_PLL_OUT_MASK);
+	if (ret)
+		return ret;
+
+	return regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL,
+				 PLL_OUTCTRL);
+}
+
+static void alpha_pll_fabia_disable(struct clk_hw *hw)
+{
+	int ret;
+	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+	u32 val;
+	struct regmap *regmap = pll->clkr.regmap;
+
+	ret = regmap_read(regmap, PLL_MODE(pll), &val);
+	if (ret)
+		return;
+
+	/* If in FSM mode, just unvote it */
+	if (val & PLL_FSM_ENA) {
+		clk_disable_regmap(hw);
+		return;
+	}
+
+	ret = regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL, 0);
+	if (ret)
+		return;
+
+	/* Disable main outputs */
+	ret = regmap_update_bits(regmap, PLL_USER_CTL(pll), FABIA_PLL_OUT_MASK,
+				 0);
+	if (ret)
+		return;
+
+	/* Place the PLL in STANDBY */
+	regmap_write(regmap, PLL_OPMODE(pll), FABIA_OPMODE_STANDBY);
+}
+
+static unsigned long alpha_pll_fabia_recalc_rate(struct clk_hw *hw,
+						unsigned long parent_rate)
+{
+	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+	u32 l, frac, alpha_width = pll_alpha_width(pll);
+
+	regmap_read(pll->clkr.regmap, PLL_L_VAL(pll), &l);
+	regmap_read(pll->clkr.regmap, PLL_FRAC(pll), &frac);
+
+	return alpha_pll_calc_rate(parent_rate, l, frac, alpha_width);
+}
+
+static int alpha_pll_fabia_set_rate(struct clk_hw *hw, unsigned long rate,
+						unsigned long prate)
+{
+	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+	u32 val, l, alpha_width = pll_alpha_width(pll);
+	u64 a;
+	unsigned long rrate;
+	int ret = 0;
+
+	ret = regmap_read(pll->clkr.regmap, PLL_MODE(pll), &val);
+	if (ret)
+		return ret;
+
+	rrate = alpha_pll_round_rate(rate, prate, &l, &a, alpha_width);
+
+	/*
+	 * Due to limited number of bits for fractional rate programming, the
+	 * rounded up rate could be marginally higher than the requested rate.
+	 */
+	if (rrate > (rate + FABIA_PLL_RATE_MARGIN) || rrate < rate) {
+		pr_err("Call set rate on the PLL with rounded rates!\n");
+		return -EINVAL;
+	}
+
+	regmap_write(pll->clkr.regmap, PLL_L_VAL(pll), l);
+	regmap_write(pll->clkr.regmap, PLL_FRAC(pll), a);
+
+	return __clk_alpha_pll_update_latch(pll);
+}
+
+const struct clk_ops clk_alpha_pll_fabia_ops = {
+	.enable = alpha_pll_fabia_enable,
+	.disable = alpha_pll_fabia_disable,
+	.is_enabled = clk_alpha_pll_is_enabled,
+	.set_rate = alpha_pll_fabia_set_rate,
+	.recalc_rate = alpha_pll_fabia_recalc_rate,
+	.round_rate = clk_alpha_pll_round_rate,
+};
+EXPORT_SYMBOL_GPL(clk_alpha_pll_fabia_ops);
+
+const struct clk_ops clk_alpha_pll_fixed_fabia_ops = {
+	.enable = alpha_pll_fabia_enable,
+	.disable = alpha_pll_fabia_disable,
+	.is_enabled = clk_alpha_pll_is_enabled,
+	.recalc_rate = alpha_pll_fabia_recalc_rate,
+	.round_rate = clk_alpha_pll_round_rate,
+};
+EXPORT_SYMBOL_GPL(clk_alpha_pll_fixed_fabia_ops);
+
+static unsigned long clk_alpha_pll_postdiv_fabia_recalc_rate(struct clk_hw *hw,
+					unsigned long parent_rate)
+{
+	struct clk_alpha_pll_postdiv *pll = to_clk_alpha_pll_postdiv(hw);
+	u32 i, div = 1, val;
+	int ret;
+
+	if (!pll->post_div_table) {
+		pr_err("Missing the post_div_table for the PLL\n");
+		return -EINVAL;
+	}
+
+	ret = regmap_read(pll->clkr.regmap, PLL_USER_CTL(pll), &val);
+	if (ret)
+		return ret;
+
+	val >>= pll->post_div_shift;
+	val &= BIT(pll->width) - 1;
+
+	for (i = 0; i < pll->num_post_div; i++) {
+		if (pll->post_div_table[i].val == val) {
+			div = pll->post_div_table[i].div;
+			break;
+		}
+	}
+
+	return (parent_rate / div);
+}
+
+static long clk_alpha_pll_postdiv_fabia_round_rate(struct clk_hw *hw,
+				unsigned long rate, unsigned long *prate)
+{
+	struct clk_alpha_pll_postdiv *pll = to_clk_alpha_pll_postdiv(hw);
+
+	if (!pll->post_div_table) {
+		pr_err("Missing the post_div_table for the PLL\n");
+		return -EINVAL;
+	}
+
+	return divider_round_rate(hw, rate, prate, pll->post_div_table,
+				pll->width, CLK_DIVIDER_ROUND_CLOSEST);
+}
+
+static int clk_alpha_pll_postdiv_fabia_set_rate(struct clk_hw *hw,
+				unsigned long rate, unsigned long parent_rate)
+{
+	struct clk_alpha_pll_postdiv *pll = to_clk_alpha_pll_postdiv(hw);
+	int i, val = 0, div, ret;
+
+	/*
+	 * If the PLL is in FSM mode, then treat set_rate callback as a
+	 * no-operation.
+	 */
+	ret = regmap_read(pll->clkr.regmap, PLL_MODE(pll), &val);
+	if (ret)
+		return ret;
+
+	if (val & PLL_VOTE_FSM_ENA)
+		return 0;
+
+	if (!pll->post_div_table) {
+		pr_err("Missing the post_div_table for the PLL\n");
+		return -EINVAL;
+	}
+
+	div = DIV_ROUND_UP_ULL((u64)parent_rate, rate);
+	for (i = 0; i < pll->num_post_div; i++) {
+		if (pll->post_div_table[i].div == div) {
+			val = pll->post_div_table[i].val;
+			break;
+		}
+	}
+
+	return regmap_update_bits(pll->clkr.regmap, PLL_USER_CTL(pll),
+				(BIT(pll->width) - 1) << pll->post_div_shift,
+				val << pll->post_div_shift);
+}
+
+const struct clk_ops clk_alpha_pll_postdiv_fabia_ops = {
+	.recalc_rate = clk_alpha_pll_postdiv_fabia_recalc_rate,
+	.round_rate = clk_alpha_pll_postdiv_fabia_round_rate,
+	.set_rate = clk_alpha_pll_postdiv_fabia_set_rate,
+};
+EXPORT_SYMBOL_GPL(clk_alpha_pll_postdiv_fabia_ops);