Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk updates from Stephen Boyd:
 "It's the usual big pile of driver updates and additions, but we do
  have a couple core changes in here as well.

  Core:

   - CLK_IS_CRITICAL support has been added.  This should allow drivers
     to properly express that a certain clk should stay on even if their
     prepare/enable count drops to 0 (and in turn the parents of these
     clks should stay enabled).

   - A clk registration API has been added, clk_hw_register(), and an OF
     clk provider API has been added, of_clk_add_hw_provider().  These
     APIs have been put in place to further split clk providers from clk
     consumers, with the goal being to have clk providers never deal
     with struct clk pointers at all.  Conversion of provider drivers is
     on going.  clkdev has also gained support for registering clk_hw
     pointers directly so we can convert drivers that don't use
     devicetree.

  New Drivers:

   - Marvell ap806 and cp110 system controllers (with clks inside!)
   - Hisilicon Hi3519 clock and reset controller
   - Axis ARTPEC-6 clock controllers
   - Oxford Semiconductor OXNAS clock controllers
   - AXS10X I2S PLL
   - Rockchip RK3399 clock and reset controller

  Updates:

   - MMC2 and UART2 clks on Samsung Exynos 3250, ACLK on Samsung Exynos
     542x SoCs, and some more clk ID exporting for bus frequency scaling
   - Proper BCM2835 PCM clk support and various other clks
   - i.MX clk updates for i.MX6SX, i.MX7, and VF610
   - Renesas updates for R-Car H3
   - Tegra210 got updates for DisplayPort and HDMI 2.0
   - Rockchip driver refactorings and fixes due to adding RK3399 support"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (139 commits)
  clk: fix critical clock locking
  clk: qcom: mmcc-8996: Remove clocks that should be controlled by RPM
  clk: ingenic: Allow divider value to be divided
  clk: sunxi: Add display and TCON0 clocks driver
  clk: rockchip: drop old_rate calculation on pll rate changes
  clk: rockchip: simplify GRF handling in pll clocks
  clk: rockchip: lookup General Register Files in rockchip_clk_init
  clk: rockchip: fix the rk3399 sdmmc sample / drv name
  clk: mvebu: new driver for Armada CP110 system controller
  dt-bindings: arm: add DT binding for Marvell CP110 system controller
  clk: mvebu: new driver for Armada AP806 system controller
  clk: hisilicon: add CRG driver for hi3519 soc
  clk: hisilicon: export some hisilicon APIs to modules
  reset: hisilicon: add reset controller driver for hisilicon SOCs
  clk: bcm/kona: Do not use sizeof on pointer type
  clk: qcom: msm8916: Fix crypto clock flags
  clk: nxp: lpc18xx: Initialize clk_init_data::flags to 0
  clk/axs10x: Add I2S PLL clock driver
  clk: imx7d: fix ahb clock mux 1
  clk: fix comment of devm_clk_hw_register()
  ...

1 files changed, 92 insertions, 59 deletions

diff --git a/drivers/clk/rockchip/clk.c b/drivers/clk/rockchip/clk.c
index ec06350c78c4..7ffd134995f2 100644
--- a/drivers/clk/rockchip/clk.c
+++ b/drivers/clk/rockchip/clk.c
@@ -2,6 +2,9 @@
  * Copyright (c) 2014 MundoReader S.L.
  * Author: Heiko Stuebner <heiko@sntech.de>
  *
+ * Copyright (c) 2016 Rockchip Electronics Co. Ltd.
+ * Author: Xing Zheng <zhengxing@rock-chips.com>
+ *
  * based on
  *
  * samsung/clk.c
@@ -39,7 +42,8 @@
  * sometimes without one of those components.
  */
 static struct clk *rockchip_clk_register_branch(const char *name,
-		const char *const *parent_names, u8 num_parents, void __iomem *base,
+		const char *const *parent_names, u8 num_parents,
+		void __iomem *base,
 		int muxdiv_offset, u8 mux_shift, u8 mux_width, u8 mux_flags,
 		u8 div_shift, u8 div_width, u8 div_flags,
 		struct clk_div_table *div_table, int gate_offset,
@@ -136,9 +140,11 @@ static int rockchip_clk_frac_notifier_cb(struct notifier_block *nb,
 	pr_debug("%s: event %lu, old_rate %lu, new_rate: %lu\n",
 		 __func__, event, ndata->old_rate, ndata->new_rate);
 	if (event == PRE_RATE_CHANGE) {
-		frac->rate_change_idx = frac->mux_ops->get_parent(&frac_mux->hw);
+		frac->rate_change_idx =
+				frac->mux_ops->get_parent(&frac_mux->hw);
 		if (frac->rate_change_idx != frac->mux_frac_idx) {
-			frac->mux_ops->set_parent(&frac_mux->hw, frac->mux_frac_idx);
+			frac->mux_ops->set_parent(&frac_mux->hw,
+						  frac->mux_frac_idx);
 			frac->rate_change_remuxed = 1;
 		}
 	} else if (event == POST_RATE_CHANGE) {
@@ -149,7 +155,8 @@ static int rockchip_clk_frac_notifier_cb(struct notifier_block *nb,
 		 * reaches the mux itself.
 		 */
 		if (frac->rate_change_remuxed) {
-			frac->mux_ops->set_parent(&frac_mux->hw, frac->rate_change_idx);
+			frac->mux_ops->set_parent(&frac_mux->hw,
+						  frac->rate_change_idx);
 			frac->rate_change_remuxed = 0;
 		}
 	}
@@ -157,7 +164,8 @@ static int rockchip_clk_frac_notifier_cb(struct notifier_block *nb,
 	return notifier_from_errno(ret);
 }
 
-static struct clk *rockchip_clk_register_frac_branch(const char *name,
+static struct clk *rockchip_clk_register_frac_branch(
+		struct rockchip_clk_provider *ctx, const char *name,
 		const char *const *parent_names, u8 num_parents,
 		void __iomem *base, int muxdiv_offset, u8 div_flags,
 		int gate_offset, u8 gate_shift, u8 gate_flags,
@@ -250,7 +258,7 @@ static struct clk *rockchip_clk_register_frac_branch(const char *name,
 		if (IS_ERR(mux_clk))
 			return clk;
 
-		rockchip_clk_add_lookup(mux_clk, child->id);
+		rockchip_clk_add_lookup(ctx, mux_clk, child->id);
 
 		/* notifier on the fraction divider to catch rate changes */
 		if (frac->mux_frac_idx >= 0) {
@@ -314,66 +322,82 @@ static struct clk *rockchip_clk_register_factor_branch(const char *name,
 	return clk;
 }
 
-static DEFINE_SPINLOCK(clk_lock);
-static struct clk **clk_table;
-static void __iomem *reg_base;
-static struct clk_onecell_data clk_data;
-static struct device_node *cru_node;
-static struct regmap *grf;
-
-void __init rockchip_clk_init(struct device_node *np, void __iomem *base,
-			      unsigned long nr_clks)
+struct rockchip_clk_provider * __init rockchip_clk_init(struct device_node *np,
+			void __iomem *base, unsigned long nr_clks)
 {
-	reg_base = base;
-	cru_node = np;
-	grf = ERR_PTR(-EPROBE_DEFER);
+	struct rockchip_clk_provider *ctx;
+	struct clk **clk_table;
+	int i;
+
+	ctx = kzalloc(sizeof(struct rockchip_clk_provider), GFP_KERNEL);
+	if (!ctx)
+		return ERR_PTR(-ENOMEM);
 
 	clk_table = kcalloc(nr_clks, sizeof(struct clk *), GFP_KERNEL);
 	if (!clk_table)
-		pr_err("%s: could not allocate clock lookup table\n", __func__);
+		goto err_free;
 
-	clk_data.clks = clk_table;
-	clk_data.clk_num = nr_clks;
-	of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
+	for (i = 0; i < nr_clks; ++i)
+		clk_table[i] = ERR_PTR(-ENOENT);
+
+	ctx->reg_base = base;
+	ctx->clk_data.clks = clk_table;
+	ctx->clk_data.clk_num = nr_clks;
+	ctx->cru_node = np;
+	ctx->grf = ERR_PTR(-EPROBE_DEFER);
+	spin_lock_init(&ctx->lock);
+
+	ctx->grf = syscon_regmap_lookup_by_phandle(ctx->cru_node,
+						   "rockchip,grf");
+
+	return ctx;
+
+err_free:
+	kfree(ctx);
+	return ERR_PTR(-ENOMEM);
 }
 
-struct regmap *rockchip_clk_get_grf(void)
+void __init rockchip_clk_of_add_provider(struct device_node *np,
+				struct rockchip_clk_provider *ctx)
 {
-	if (IS_ERR(grf))
-		grf = syscon_regmap_lookup_by_phandle(cru_node, "rockchip,grf");
-	return grf;
+	if (of_clk_add_provider(np, of_clk_src_onecell_get,
+				&ctx->clk_data))
+		pr_err("%s: could not register clk provider\n", __func__);
 }
 
-void rockchip_clk_add_lookup(struct clk *clk, unsigned int id)
+void rockchip_clk_add_lookup(struct rockchip_clk_provider *ctx,
+			     struct clk *clk, unsigned int id)
 {
-	if (clk_table && id)
-		clk_table[id] = clk;
+	if (ctx->clk_data.clks && id)
+		ctx->clk_data.clks[id] = clk;
 }
 
-void __init rockchip_clk_register_plls(struct rockchip_pll_clock *list,
+void __init rockchip_clk_register_plls(struct rockchip_clk_provider *ctx,
+				struct rockchip_pll_clock *list,
 				unsigned int nr_pll, int grf_lock_offset)
 {
 	struct clk *clk;
 	int idx;
 
 	for (idx = 0; idx < nr_pll; idx++, list++) {
-		clk = rockchip_clk_register_pll(list->type, list->name,
+		clk = rockchip_clk_register_pll(ctx, list->type, list->name,
 				list->parent_names, list->num_parents,
-				reg_base, list->con_offset, grf_lock_offset,
+				list->con_offset, grf_lock_offset,
 				list->lock_shift, list->mode_offset,
 				list->mode_shift, list->rate_table,
-				list->pll_flags, &clk_lock);
+				list->pll_flags);
 		if (IS_ERR(clk)) {
 			pr_err("%s: failed to register clock %s\n", __func__,
 				list->name);
 			continue;
 		}
 
-		rockchip_clk_add_lookup(clk, list->id);
+		rockchip_clk_add_lookup(ctx, clk, list->id);
 	}
 }
 
 void __init rockchip_clk_register_branches(
+				      struct rockchip_clk_provider *ctx,
 				      struct rockchip_clk_branch *list,
 				      unsigned int nr_clk)
 {
@@ -389,56 +413,59 @@ void __init rockchip_clk_register_branches(
 		case branch_mux:
 			clk = clk_register_mux(NULL, list->name,
 				list->parent_names, list->num_parents,
-				flags, reg_base + list->muxdiv_offset,
+				flags, ctx->reg_base + list->muxdiv_offset,
 				list->mux_shift, list->mux_width,
-				list->mux_flags, &clk_lock);
+				list->mux_flags, &ctx->lock);
 			break;
 		case branch_divider:
 			if (list->div_table)
 				clk = clk_register_divider_table(NULL,
 					list->name, list->parent_names[0],
-					flags, reg_base + list->muxdiv_offset,
+					flags,
+					ctx->reg_base + list->muxdiv_offset,
 					list->div_shift, list->div_width,
 					list->div_flags, list->div_table,
-					&clk_lock);
+					&ctx->lock);
 			else
 				clk = clk_register_divider(NULL, list->name,
 					list->parent_names[0], flags,
-					reg_base + list->muxdiv_offset,
+					ctx->reg_base + list->muxdiv_offset,
 					list->div_shift, list->div_width,
-					list->div_flags, &clk_lock);
+					list->div_flags, &ctx->lock);
 			break;
 		case branch_fraction_divider:
-			clk = rockchip_clk_register_frac_branch(list->name,
+			clk = rockchip_clk_register_frac_branch(ctx, list->name,
 				list->parent_names, list->num_parents,
-				reg_base, list->muxdiv_offset, list->div_flags,
+				ctx->reg_base, list->muxdiv_offset,
+				list->div_flags,
 				list->gate_offset, list->gate_shift,
 				list->gate_flags, flags, list->child,
-				&clk_lock);
+				&ctx->lock);
 			break;
 		case branch_gate:
 			flags |= CLK_SET_RATE_PARENT;
 
 			clk = clk_register_gate(NULL, list->name,
 				list->parent_names[0], flags,
-				reg_base + list->gate_offset,
-				list->gate_shift, list->gate_flags, &clk_lock);
+				ctx->reg_base + list->gate_offset,
+				list->gate_shift, list->gate_flags, &ctx->lock);
 			break;
 		case branch_composite:
 			clk = rockchip_clk_register_branch(list->name,
 				list->parent_names, list->num_parents,
-				reg_base, list->muxdiv_offset, list->mux_shift,
+				ctx->reg_base, list->muxdiv_offset,
+				list->mux_shift,
 				list->mux_width, list->mux_flags,
 				list->div_shift, list->div_width,
 				list->div_flags, list->div_table,
 				list->gate_offset, list->gate_shift,
-				list->gate_flags, flags, &clk_lock);
+				list->gate_flags, flags, &ctx->lock);
 			break;
 		case branch_mmc:
 			clk = rockchip_clk_register_mmc(
 				list->name,
 				list->parent_names, list->num_parents,
-				reg_base + list->muxdiv_offset,
+				ctx->reg_base + list->muxdiv_offset,
 				list->div_shift
 			);
 			break;
@@ -446,16 +473,16 @@ void __init rockchip_clk_register_branches(
 			clk = rockchip_clk_register_inverter(
 				list->name, list->parent_names,
 				list->num_parents,
-				reg_base + list->muxdiv_offset,
-				list->div_shift, list->div_flags, &clk_lock);
+				ctx->reg_base + list->muxdiv_offset,
+				list->div_shift, list->div_flags, &ctx->lock);
 			break;
 		case branch_factor:
 			clk = rockchip_clk_register_factor_branch(
 				list->name, list->parent_names,
-				list->num_parents, reg_base,
+				list->num_parents, ctx->reg_base,
 				list->div_shift, list->div_width,
 				list->gate_offset, list->gate_shift,
-				list->gate_flags, flags, &clk_lock);
+				list->gate_flags, flags, &ctx->lock);
 			break;
 		}
 
@@ -472,11 +499,12 @@ void __init rockchip_clk_register_branches(
 			continue;
 		}
 
-		rockchip_clk_add_lookup(clk, list->id);
+		rockchip_clk_add_lookup(ctx, clk, list->id);
 	}
 }
 
-void __init rockchip_clk_register_armclk(unsigned int lookup_id,
+void __init rockchip_clk_register_armclk(struct rockchip_clk_provider *ctx,
+			unsigned int lookup_id,
 			const char *name, const char *const *parent_names,
 			u8 num_parents,
 			const struct rockchip_cpuclk_reg_data *reg_data,
@@ -486,15 +514,15 @@ void __init rockchip_clk_register_armclk(unsigned int lookup_id,
 	struct clk *clk;
 
 	clk = rockchip_clk_register_cpuclk(name, parent_names, num_parents,
-					   reg_data, rates, nrates, reg_base,
-					   &clk_lock);
+					   reg_data, rates, nrates,
+					   ctx->reg_base, &ctx->lock);
 	if (IS_ERR(clk)) {
 		pr_err("%s: failed to register clock %s: %ld\n",
 		       __func__, name, PTR_ERR(clk));
 		return;
 	}
 
-	rockchip_clk_add_lookup(clk, lookup_id);
+	rockchip_clk_add_lookup(ctx, clk, lookup_id);
 }
 
 void __init rockchip_clk_protect_critical(const char *const clocks[],
@@ -511,6 +539,7 @@ void __init rockchip_clk_protect_critical(const char *const clocks[],
 	}
 }
 
+static void __iomem *rst_base;
 static unsigned int reg_restart;
 static void (*cb_restart)(void);
 static int rockchip_restart_notify(struct notifier_block *this,
@@ -519,7 +548,7 @@ static int rockchip_restart_notify(struct notifier_block *this,
 	if (cb_restart)
 		cb_restart();
 
-	writel(0xfdb9, reg_base + reg_restart);
+	writel(0xfdb9, rst_base + reg_restart);
 	return NOTIFY_DONE;
 }
 
@@ -528,10 +557,14 @@ static struct notifier_block rockchip_restart_handler = {
 	.priority = 128,
 };
 
-void __init rockchip_register_restart_notifier(unsigned int reg, void (*cb)(void))
+void __init
+rockchip_register_restart_notifier(struct rockchip_clk_provider *ctx,
+					       unsigned int reg,
+					       void (*cb)(void))
 {
 	int ret;
 
+	rst_base = ctx->reg_base;
 	reg_restart = reg;
 	cb_restart = cb;
 	ret = register_restart_handler(&rockchip_restart_handler);