Merge tag 'clk-for-linus-3.20' of git://git.linaro.org/people/mike.turquette/linux

Pull clock framework updates from Mike Turquette:
 "The clock framework changes contain the usual driver additions,
  enhancements and fixes mostly for ARM32, ARM64, MIPS and Power-based
  devices.

  Additionally the framework core underwent a bit of surgery with two
  major changes:

   - The boundary between the clock core and clock providers (e.g clock
     drivers) is now more well defined with dedicated provider helper
     functions.  struct clk no longer maps 1:1 with the hardware clock
     but is a true per-user cookie which helps us tracker users of
     hardware clocks and debug bad behavior.

   - The addition of rate constraints for clocks.  Rate ranges are now
     supported which are analogous to the voltage ranges in the
     regulator framework.

  Unfortunately these changes to the core created some breakeage.  We
  think we fixed it all up but for this reason there are lots of last
  minute commits trying to undo the damage"

* tag 'clk-for-linus-3.20' of git://git.linaro.org/people/mike.turquette/linux: (113 commits)
  clk: Only recalculate the rate if needed
  Revert "clk: mxs: Fix invalid 32-bit access to frac registers"
  clk: qoriq: Add support for the platform PLL
  powerpc/corenet: Enable CLK_QORIQ
  clk: Replace explicit clk assignment with __clk_hw_set_clk
  clk: Add __clk_hw_set_clk helper function
  clk: Don't dereference parent clock if is NULL
  MIPS: Alchemy: Remove bogus args from alchemy_clk_fgcs_detr
  clkdev: Always allocate a struct clk and call __clk_get() w/ CCF
  clk: shmobile: div6: Avoid division by zero in .round_rate()
  clk: mxs: Fix invalid 32-bit access to frac registers
  clk: omap: compile legacy omap3 clocks conditionally
  clkdev: Export clk_register_clkdev
  clk: Add rate constraints to clocks
  clk: remove clk-private.h
  pci: xgene: do not use clk-private.h
  arm: omap2+ remove dead clock code
  clk: Make clk API return per-user struct clk instances
  clk: tegra: Define PLLD_DSI and remove dsia(b)_mux
  clk: tegra: Add support for the Tegra132 CAR IP block
  ...

1 files changed, 473 insertions, 0 deletions

diff --git a/drivers/clk/qcom/lcc-ipq806x.c b/drivers/clk/qcom/lcc-ipq806x.c
new file mode 100644
index 000000000000..121ffde25dc3
--- /dev/null
+++ b/drivers/clk/qcom/lcc-ipq806x.c
@@ -0,0 +1,473 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/clk-provider.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/clock/qcom,lcc-ipq806x.h>
+
+#include "common.h"
+#include "clk-regmap.h"
+#include "clk-pll.h"
+#include "clk-rcg.h"
+#include "clk-branch.h"
+#include "clk-regmap-divider.h"
+#include "clk-regmap-mux.h"
+
+static struct clk_pll pll4 = {
+	.l_reg = 0x4,
+	.m_reg = 0x8,
+	.n_reg = 0xc,
+	.config_reg = 0x14,
+	.mode_reg = 0x0,
+	.status_reg = 0x18,
+	.status_bit = 16,
+	.clkr.hw.init = &(struct clk_init_data){
+		.name = "pll4",
+		.parent_names = (const char *[]){ "pxo" },
+		.num_parents = 1,
+		.ops = &clk_pll_ops,
+	},
+};
+
+static const struct pll_config pll4_config = {
+	.l = 0xf,
+	.m = 0x91,
+	.n = 0xc7,
+	.vco_val = 0x0,
+	.vco_mask = BIT(17) | BIT(16),
+	.pre_div_val = 0x0,
+	.pre_div_mask = BIT(19),
+	.post_div_val = 0x0,
+	.post_div_mask = BIT(21) | BIT(20),
+	.mn_ena_mask = BIT(22),
+	.main_output_mask = BIT(23),
+};
+
+#define P_PXO	0
+#define P_PLL4	1
+
+static const u8 lcc_pxo_pll4_map[] = {
+	[P_PXO]		= 0,
+	[P_PLL4]	= 2,
+};
+
+static const char *lcc_pxo_pll4[] = {
+	"pxo",
+	"pll4_vote",
+};
+
+static struct freq_tbl clk_tbl_aif_mi2s[] = {
+	{  1024000, P_PLL4, 4,  1,  96 },
+	{  1411200, P_PLL4, 4,  2, 139 },
+	{  1536000, P_PLL4, 4,  1,  64 },
+	{  2048000, P_PLL4, 4,  1,  48 },
+	{  2116800, P_PLL4, 4,  2,  93 },
+	{  2304000, P_PLL4, 4,  2,  85 },
+	{  2822400, P_PLL4, 4,  6, 209 },
+	{  3072000, P_PLL4, 4,  1,  32 },
+	{  3175200, P_PLL4, 4,  1,  31 },
+	{  4096000, P_PLL4, 4,  1,  24 },
+	{  4233600, P_PLL4, 4,  9, 209 },
+	{  4608000, P_PLL4, 4,  3,  64 },
+	{  5644800, P_PLL4, 4, 12, 209 },
+	{  6144000, P_PLL4, 4,  1,  16 },
+	{  6350400, P_PLL4, 4,  2,  31 },
+	{  8192000, P_PLL4, 4,  1,  12 },
+	{  8467200, P_PLL4, 4, 18, 209 },
+	{  9216000, P_PLL4, 4,  3,  32 },
+	{ 11289600, P_PLL4, 4, 24, 209 },
+	{ 12288000, P_PLL4, 4,  1,   8 },
+	{ 12700800, P_PLL4, 4, 27, 209 },
+	{ 13824000, P_PLL4, 4,  9,  64 },
+	{ 16384000, P_PLL4, 4,  1,   6 },
+	{ 16934400, P_PLL4, 4, 41, 238 },
+	{ 18432000, P_PLL4, 4,  3,  16 },
+	{ 22579200, P_PLL4, 2, 24, 209 },
+	{ 24576000, P_PLL4, 4,  1,   4 },
+	{ 27648000, P_PLL4, 4,  9,  32 },
+	{ 33868800, P_PLL4, 4, 41, 119 },
+	{ 36864000, P_PLL4, 4,  3,   8 },
+	{ 45158400, P_PLL4, 1, 24, 209 },
+	{ 49152000, P_PLL4, 4,  1,   2 },
+	{ 50803200, P_PLL4, 1, 27, 209 },
+	{ }
+};
+
+static struct clk_rcg mi2s_osr_src = {
+	.ns_reg = 0x48,
+	.md_reg = 0x4c,
+	.mn = {
+		.mnctr_en_bit = 8,
+		.mnctr_reset_bit = 7,
+		.mnctr_mode_shift = 5,
+		.n_val_shift = 24,
+		.m_val_shift = 8,
+		.width = 8,
+	},
+	.p = {
+		.pre_div_shift = 3,
+		.pre_div_width = 2,
+	},
+	.s = {
+		.src_sel_shift = 0,
+		.parent_map = lcc_pxo_pll4_map,
+	},
+	.freq_tbl = clk_tbl_aif_mi2s,
+	.clkr = {
+		.enable_reg = 0x48,
+		.enable_mask = BIT(9),
+		.hw.init = &(struct clk_init_data){
+			.name = "mi2s_osr_src",
+			.parent_names = lcc_pxo_pll4,
+			.num_parents = 2,
+			.ops = &clk_rcg_ops,
+			.flags = CLK_SET_RATE_GATE,
+		},
+	},
+};
+
+static const char *lcc_mi2s_parents[] = {
+	"mi2s_osr_src",
+};
+
+static struct clk_branch mi2s_osr_clk = {
+	.halt_reg = 0x50,
+	.halt_bit = 1,
+	.halt_check = BRANCH_HALT_ENABLE,
+	.clkr = {
+		.enable_reg = 0x48,
+		.enable_mask = BIT(17),
+		.hw.init = &(struct clk_init_data){
+			.name = "mi2s_osr_clk",
+			.parent_names = lcc_mi2s_parents,
+			.num_parents = 1,
+			.ops = &clk_branch_ops,
+			.flags = CLK_SET_RATE_PARENT,
+		},
+	},
+};
+
+static struct clk_regmap_div mi2s_div_clk = {
+	.reg = 0x48,
+	.shift = 10,
+	.width = 4,
+	.clkr = {
+		.hw.init = &(struct clk_init_data){
+			.name = "mi2s_div_clk",
+			.parent_names = lcc_mi2s_parents,
+			.num_parents = 1,
+			.ops = &clk_regmap_div_ops,
+		},
+	},
+};
+
+static struct clk_branch mi2s_bit_div_clk = {
+	.halt_reg = 0x50,
+	.halt_bit = 0,
+	.halt_check = BRANCH_HALT_ENABLE,
+	.clkr = {
+		.enable_reg = 0x48,
+		.enable_mask = BIT(15),
+		.hw.init = &(struct clk_init_data){
+			.name = "mi2s_bit_div_clk",
+			.parent_names = (const char *[]){ "mi2s_div_clk" },
+			.num_parents = 1,
+			.ops = &clk_branch_ops,
+			.flags = CLK_SET_RATE_PARENT,
+		},
+	},
+};
+
+
+static struct clk_regmap_mux mi2s_bit_clk = {
+	.reg = 0x48,
+	.shift = 14,
+	.width = 1,
+	.clkr = {
+		.hw.init = &(struct clk_init_data){
+			.name = "mi2s_bit_clk",
+			.parent_names = (const char *[]){
+				"mi2s_bit_div_clk",
+				"mi2s_codec_clk",
+			},
+			.num_parents = 2,
+			.ops = &clk_regmap_mux_closest_ops,
+			.flags = CLK_SET_RATE_PARENT,
+		},
+	},
+};
+
+static struct freq_tbl clk_tbl_pcm[] = {
+	{   64000, P_PLL4, 4, 1, 1536 },
+	{  128000, P_PLL4, 4, 1,  768 },
+	{  256000, P_PLL4, 4, 1,  384 },
+	{  512000, P_PLL4, 4, 1,  192 },
+	{ 1024000, P_PLL4, 4, 1,   96 },
+	{ 2048000, P_PLL4, 4, 1,   48 },
+	{ },
+};
+
+static struct clk_rcg pcm_src = {
+	.ns_reg = 0x54,
+	.md_reg = 0x58,
+	.mn = {
+		.mnctr_en_bit = 8,
+		.mnctr_reset_bit = 7,
+		.mnctr_mode_shift = 5,
+		.n_val_shift = 16,
+		.m_val_shift = 16,
+		.width = 16,
+	},
+	.p = {
+		.pre_div_shift = 3,
+		.pre_div_width = 2,
+	},
+	.s = {
+		.src_sel_shift = 0,
+		.parent_map = lcc_pxo_pll4_map,
+	},
+	.freq_tbl = clk_tbl_pcm,
+	.clkr = {
+		.enable_reg = 0x54,
+		.enable_mask = BIT(9),
+		.hw.init = &(struct clk_init_data){
+			.name = "pcm_src",
+			.parent_names = lcc_pxo_pll4,
+			.num_parents = 2,
+			.ops = &clk_rcg_ops,
+			.flags = CLK_SET_RATE_GATE,
+		},
+	},
+};
+
+static struct clk_branch pcm_clk_out = {
+	.halt_reg = 0x5c,
+	.halt_bit = 0,
+	.halt_check = BRANCH_HALT_ENABLE,
+	.clkr = {
+		.enable_reg = 0x54,
+		.enable_mask = BIT(11),
+		.hw.init = &(struct clk_init_data){
+			.name = "pcm_clk_out",
+			.parent_names = (const char *[]){ "pcm_src" },
+			.num_parents = 1,
+			.ops = &clk_branch_ops,
+			.flags = CLK_SET_RATE_PARENT,
+		},
+	},
+};
+
+static struct clk_regmap_mux pcm_clk = {
+	.reg = 0x54,
+	.shift = 10,
+	.width = 1,
+	.clkr = {
+		.hw.init = &(struct clk_init_data){
+			.name = "pcm_clk",
+			.parent_names = (const char *[]){
+				"pcm_clk_out",
+				"pcm_codec_clk",
+			},
+			.num_parents = 2,
+			.ops = &clk_regmap_mux_closest_ops,
+			.flags = CLK_SET_RATE_PARENT,
+		},
+	},
+};
+
+static struct freq_tbl clk_tbl_aif_osr[] = {
+	{  22050, P_PLL4, 1, 147, 20480 },
+	{  32000, P_PLL4, 1,   1,    96 },
+	{  44100, P_PLL4, 1, 147, 10240 },
+	{  48000, P_PLL4, 1,   1,    64 },
+	{  88200, P_PLL4, 1, 147,  5120 },
+	{  96000, P_PLL4, 1,   1,    32 },
+	{ 176400, P_PLL4, 1, 147,  2560 },
+	{ 192000, P_PLL4, 1,   1,    16 },
+	{ },
+};
+
+static struct clk_rcg spdif_src = {
+	.ns_reg = 0xcc,
+	.md_reg = 0xd0,
+	.mn = {
+		.mnctr_en_bit = 8,
+		.mnctr_reset_bit = 7,
+		.mnctr_mode_shift = 5,
+		.n_val_shift = 16,
+		.m_val_shift = 16,
+		.width = 8,
+	},
+	.p = {
+		.pre_div_shift = 3,
+		.pre_div_width = 2,
+	},
+	.s = {
+		.src_sel_shift = 0,
+		.parent_map = lcc_pxo_pll4_map,
+	},
+	.freq_tbl = clk_tbl_aif_osr,
+	.clkr = {
+		.enable_reg = 0xcc,
+		.enable_mask = BIT(9),
+		.hw.init = &(struct clk_init_data){
+			.name = "spdif_src",
+			.parent_names = lcc_pxo_pll4,
+			.num_parents = 2,
+			.ops = &clk_rcg_ops,
+			.flags = CLK_SET_RATE_GATE,
+		},
+	},
+};
+
+static const char *lcc_spdif_parents[] = {
+	"spdif_src",
+};
+
+static struct clk_branch spdif_clk = {
+	.halt_reg = 0xd4,
+	.halt_bit = 1,
+	.halt_check = BRANCH_HALT_ENABLE,
+	.clkr = {
+		.enable_reg = 0xcc,
+		.enable_mask = BIT(12),
+		.hw.init = &(struct clk_init_data){
+			.name = "spdif_clk",
+			.parent_names = lcc_spdif_parents,
+			.num_parents = 1,
+			.ops = &clk_branch_ops,
+			.flags = CLK_SET_RATE_PARENT,
+		},
+	},
+};
+
+static struct freq_tbl clk_tbl_ahbix[] = {
+	{ 131072, P_PLL4, 1, 1, 3 },
+	{ },
+};
+
+static struct clk_rcg ahbix_clk = {
+	.ns_reg = 0x38,
+	.md_reg = 0x3c,
+	.mn = {
+		.mnctr_en_bit = 8,
+		.mnctr_reset_bit = 7,
+		.mnctr_mode_shift = 5,
+		.n_val_shift = 24,
+		.m_val_shift = 8,
+		.width = 8,
+	},
+	.p = {
+		.pre_div_shift = 3,
+		.pre_div_width = 2,
+	},
+	.s = {
+		.src_sel_shift = 0,
+		.parent_map = lcc_pxo_pll4_map,
+	},
+	.freq_tbl = clk_tbl_ahbix,
+	.clkr = {
+		.enable_reg = 0x38,
+		.enable_mask = BIT(10), /* toggle the gfmux to select mn/pxo */
+		.hw.init = &(struct clk_init_data){
+			.name = "ahbix",
+			.parent_names = lcc_pxo_pll4,
+			.num_parents = 2,
+			.ops = &clk_rcg_ops,
+			.flags = CLK_SET_RATE_GATE,
+		},
+	},
+};
+
+static struct clk_regmap *lcc_ipq806x_clks[] = {
+	[PLL4] = &pll4.clkr,
+	[MI2S_OSR_SRC] = &mi2s_osr_src.clkr,
+	[MI2S_OSR_CLK] = &mi2s_osr_clk.clkr,
+	[MI2S_DIV_CLK] = &mi2s_div_clk.clkr,
+	[MI2S_BIT_DIV_CLK] = &mi2s_bit_div_clk.clkr,
+	[MI2S_BIT_CLK] = &mi2s_bit_clk.clkr,
+	[PCM_SRC] = &pcm_src.clkr,
+	[PCM_CLK_OUT] = &pcm_clk_out.clkr,
+	[PCM_CLK] = &pcm_clk.clkr,
+	[SPDIF_SRC] = &spdif_src.clkr,
+	[SPDIF_CLK] = &spdif_clk.clkr,
+	[AHBIX_CLK] = &ahbix_clk.clkr,
+};
+
+static const struct regmap_config lcc_ipq806x_regmap_config = {
+	.reg_bits	= 32,
+	.reg_stride	= 4,
+	.val_bits	= 32,
+	.max_register	= 0xfc,
+	.fast_io	= true,
+};
+
+static const struct qcom_cc_desc lcc_ipq806x_desc = {
+	.config = &lcc_ipq806x_regmap_config,
+	.clks = lcc_ipq806x_clks,
+	.num_clks = ARRAY_SIZE(lcc_ipq806x_clks),
+};
+
+static const struct of_device_id lcc_ipq806x_match_table[] = {
+	{ .compatible = "qcom,lcc-ipq8064" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, lcc_ipq806x_match_table);
+
+static int lcc_ipq806x_probe(struct platform_device *pdev)
+{
+	u32 val;
+	struct regmap *regmap;
+
+	regmap = qcom_cc_map(pdev, &lcc_ipq806x_desc);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	/* Configure the rate of PLL4 if the bootloader hasn't already */
+	val = regmap_read(regmap, 0x0, &val);
+	if (!val)
+		clk_pll_configure_sr(&pll4, regmap, &pll4_config, true);
+	/* Enable PLL4 source on the LPASS Primary PLL Mux */
+	regmap_write(regmap, 0xc4, 0x1);
+
+	return qcom_cc_really_probe(pdev, &lcc_ipq806x_desc, regmap);
+}
+
+static int lcc_ipq806x_remove(struct platform_device *pdev)
+{
+	qcom_cc_remove(pdev);
+	return 0;
+}
+
+static struct platform_driver lcc_ipq806x_driver = {
+	.probe		= lcc_ipq806x_probe,
+	.remove		= lcc_ipq806x_remove,
+	.driver		= {
+		.name	= "lcc-ipq806x",
+		.owner	= THIS_MODULE,
+		.of_match_table = lcc_ipq806x_match_table,
+	},
+};
+module_platform_driver(lcc_ipq806x_driver);
+
+MODULE_DESCRIPTION("QCOM LCC IPQ806x Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:lcc-ipq806x");