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linux/drivers/clk/qcom/lcc-msm8960.c
Christophe JAILLET da3c15ea05 clk: qcom: Constify struct freq_tbl 
'struct freq_tbl' are not modified in these drivers.

Constifying this structure moves some data to a read-only section, so
increase overall security.

On a x86_64, with allmodconfig, as an example:
Before:
======
   text	   data	    bss	    dec	    hex	filename
   7595	  43696	      0	  51291	   c85b	drivers/clk/qcom/mmcc-apq8084.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
   9867	  41424	      0	  51291	   c85b	drivers/clk/qcom/mmcc-apq8084.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/e8aee66fa83a4e65f7e855eb8bdbc91275d6994b.1720962107.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2024-07-28 21:41:48 -05:00

499 lines
13 KiB
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2014, The Linux Foundation. All rights reserved.
*/
#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/clk-provider.h>
#include <linux/regmap.h>
#include <dt-bindings/clock/qcom,lcc-msm8960.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_parent_data pxo_parent_data = {
.fw_name = "pxo", .name = "pxo_board",
};
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_data = &pxo_parent_data,
.num_parents = 1,
.ops = &clk_pll_ops,
},
};
enum {
P_PXO,
P_PLL4,
};
static const struct parent_map lcc_pxo_pll4_map[] = {
{ P_PXO, 0 },
{ P_PLL4, 2 }
};
static struct clk_parent_data lcc_pxo_pll4[] = {
{ .fw_name = "pxo", .name = "pxo_board" },
{ .fw_name = "pll4_vote", .name = "pll4_vote" },
};
static const struct freq_tbl clk_tbl_aif_osr_492[] = {
{ 512000, P_PLL4, 4, 1, 240 },
{ 768000, P_PLL4, 4, 1, 160 },
{ 1024000, P_PLL4, 4, 1, 120 },
{ 1536000, P_PLL4, 4, 1, 80 },
{ 2048000, P_PLL4, 4, 1, 60 },
{ 3072000, P_PLL4, 4, 1, 40 },
{ 4096000, P_PLL4, 4, 1, 30 },
{ 6144000, P_PLL4, 4, 1, 20 },
{ 8192000, P_PLL4, 4, 1, 15 },
{ 12288000, P_PLL4, 4, 1, 10 },
{ 24576000, P_PLL4, 4, 1, 5 },
{ 27000000, P_PXO, 1, 0, 0 },
{ }
};
static const struct freq_tbl clk_tbl_aif_osr_393[] = {
{ 512000, P_PLL4, 4, 1, 192 },
{ 768000, P_PLL4, 4, 1, 128 },
{ 1024000, P_PLL4, 4, 1, 96 },
{ 1536000, P_PLL4, 4, 1, 64 },
{ 2048000, P_PLL4, 4, 1, 48 },
{ 3072000, P_PLL4, 4, 1, 32 },
{ 4096000, P_PLL4, 4, 1, 24 },
{ 6144000, P_PLL4, 4, 1, 16 },
{ 8192000, P_PLL4, 4, 1, 12 },
{ 12288000, P_PLL4, 4, 1, 8 },
{ 24576000, P_PLL4, 4, 1, 4 },
{ 27000000, P_PXO, 1, 0, 0 },
{ }
};
#define CLK_AIF_OSR_SRC(prefix, _ns, _md) \
static struct clk_rcg prefix##_osr_src = { \
.ns_reg = _ns, \
.md_reg = _md, \
.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_osr_393, \
.clkr = { \
.enable_reg = _ns, \
.enable_mask = BIT(9), \
.hw.init = &(struct clk_init_data){ \
.name = #prefix "_osr_src", \
.parent_data = lcc_pxo_pll4, \
.num_parents = ARRAY_SIZE(lcc_pxo_pll4), \
.ops = &clk_rcg_ops, \
.flags = CLK_SET_RATE_GATE, \
}, \
}, \
}; \
#define CLK_AIF_OSR_CLK(prefix, _ns, hr, en_bit) \
static struct clk_branch prefix##_osr_clk = { \
.halt_reg = hr, \
.halt_bit = 1, \
.halt_check = BRANCH_HALT_ENABLE, \
.clkr = { \
.enable_reg = _ns, \
.enable_mask = BIT(en_bit), \
.hw.init = &(struct clk_init_data){ \
.name = #prefix "_osr_clk", \
.parent_hws = (const struct clk_hw*[]){ \
&prefix##_osr_src.clkr.hw, \
}, \
.num_parents = 1, \
.ops = &clk_branch_ops, \
.flags = CLK_SET_RATE_PARENT, \
}, \
}, \
}; \
#define CLK_AIF_OSR_DIV_CLK(prefix, _ns, _width) \
static struct clk_regmap_div prefix##_div_clk = { \
.reg = _ns, \
.shift = 10, \
.width = _width, \
.clkr = { \
.hw.init = &(struct clk_init_data){ \
.name = #prefix "_div_clk", \
.parent_hws = (const struct clk_hw*[]){ \
&prefix##_osr_src.clkr.hw, \
}, \
.num_parents = 1, \
.ops = &clk_regmap_div_ops, \
}, \
}, \
}; \
#define CLK_AIF_OSR_BIT_DIV_CLK(prefix, _ns, hr, en_bit) \
static struct clk_branch prefix##_bit_div_clk = { \
.halt_reg = hr, \
.halt_bit = 0, \
.halt_check = BRANCH_HALT_ENABLE, \
.clkr = { \
.enable_reg = _ns, \
.enable_mask = BIT(en_bit), \
.hw.init = &(struct clk_init_data){ \
.name = #prefix "_bit_div_clk", \
.parent_hws = (const struct clk_hw*[]){ \
&prefix##_div_clk.clkr.hw, \
}, \
.num_parents = 1, \
.ops = &clk_branch_ops, \
.flags = CLK_SET_RATE_PARENT, \
}, \
}, \
}; \
#define CLK_AIF_OSR_BIT_CLK(prefix, _ns, _shift) \
static struct clk_regmap_mux prefix##_bit_clk = { \
.reg = _ns, \
.shift = _shift, \
.width = 1, \
.clkr = { \
.hw.init = &(struct clk_init_data){ \
.name = #prefix "_bit_clk", \
.parent_data = (const struct clk_parent_data[]){ \
{ .hw = &prefix##_bit_div_clk.clkr.hw, }, \
{ .fw_name = #prefix "_codec_clk", \
.name = #prefix "_codec_clk", }, \
}, \
.num_parents = 2, \
.ops = &clk_regmap_mux_closest_ops, \
.flags = CLK_SET_RATE_PARENT, \
}, \
}, \
};
CLK_AIF_OSR_SRC(mi2s, 0x48, 0x4c)
CLK_AIF_OSR_CLK(mi2s, 0x48, 0x50, 17)
CLK_AIF_OSR_DIV_CLK(mi2s, 0x48, 4)
CLK_AIF_OSR_BIT_DIV_CLK(mi2s, 0x48, 0x50, 15)
CLK_AIF_OSR_BIT_CLK(mi2s, 0x48, 14)
#define CLK_AIF_OSR_DIV(prefix, _ns, _md, hr) \
CLK_AIF_OSR_SRC(prefix, _ns, _md) \
CLK_AIF_OSR_CLK(prefix, _ns, hr, 21) \
CLK_AIF_OSR_DIV_CLK(prefix, _ns, 8) \
CLK_AIF_OSR_BIT_DIV_CLK(prefix, _ns, hr, 19) \
CLK_AIF_OSR_BIT_CLK(prefix, _ns, 18)
CLK_AIF_OSR_DIV(codec_i2s_mic, 0x60, 0x64, 0x68);
CLK_AIF_OSR_DIV(spare_i2s_mic, 0x78, 0x7c, 0x80);
CLK_AIF_OSR_DIV(codec_i2s_spkr, 0x6c, 0x70, 0x74);
CLK_AIF_OSR_DIV(spare_i2s_spkr, 0x84, 0x88, 0x8c);
static const struct freq_tbl clk_tbl_pcm_492[] = {
{ 256000, P_PLL4, 4, 1, 480 },
{ 512000, P_PLL4, 4, 1, 240 },
{ 768000, P_PLL4, 4, 1, 160 },
{ 1024000, P_PLL4, 4, 1, 120 },
{ 1536000, P_PLL4, 4, 1, 80 },
{ 2048000, P_PLL4, 4, 1, 60 },
{ 3072000, P_PLL4, 4, 1, 40 },
{ 4096000, P_PLL4, 4, 1, 30 },
{ 6144000, P_PLL4, 4, 1, 20 },
{ 8192000, P_PLL4, 4, 1, 15 },
{ 12288000, P_PLL4, 4, 1, 10 },
{ 24576000, P_PLL4, 4, 1, 5 },
{ 27000000, P_PXO, 1, 0, 0 },
{ }
};
static const struct freq_tbl clk_tbl_pcm_393[] = {
{ 256000, P_PLL4, 4, 1, 384 },
{ 512000, P_PLL4, 4, 1, 192 },
{ 768000, P_PLL4, 4, 1, 128 },
{ 1024000, P_PLL4, 4, 1, 96 },
{ 1536000, P_PLL4, 4, 1, 64 },
{ 2048000, P_PLL4, 4, 1, 48 },
{ 3072000, P_PLL4, 4, 1, 32 },
{ 4096000, P_PLL4, 4, 1, 24 },
{ 6144000, P_PLL4, 4, 1, 16 },
{ 8192000, P_PLL4, 4, 1, 12 },
{ 12288000, P_PLL4, 4, 1, 8 },
{ 24576000, P_PLL4, 4, 1, 4 },
{ 27000000, P_PXO, 1, 0, 0 },
{ }
};
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_393,
.clkr = {
.enable_reg = 0x54,
.enable_mask = BIT(9),
.hw.init = &(struct clk_init_data){
.name = "pcm_src",
.parent_data = lcc_pxo_pll4,
.num_parents = ARRAY_SIZE(lcc_pxo_pll4),
.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_hws = (const struct clk_hw*[]){
&pcm_src.clkr.hw
},
.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_data = (const struct clk_parent_data[]){
{ .hw = &pcm_clk_out.clkr.hw },
{ .fw_name = "pcm_codec_clk", .name = "pcm_codec_clk" },
},
.num_parents = 2,
.ops = &clk_regmap_mux_closest_ops,
.flags = CLK_SET_RATE_PARENT,
},
},
};
static struct clk_rcg slimbus_src = {
.ns_reg = 0xcc,
.md_reg = 0xd0,
.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_osr_393,
.clkr = {
.enable_reg = 0xcc,
.enable_mask = BIT(9),
.hw.init = &(struct clk_init_data){
.name = "slimbus_src",
.parent_data = lcc_pxo_pll4,
.num_parents = ARRAY_SIZE(lcc_pxo_pll4),
.ops = &clk_rcg_ops,
.flags = CLK_SET_RATE_GATE,
},
},
};
static struct clk_branch audio_slimbus_clk = {
.halt_reg = 0xd4,
.halt_bit = 0,
.halt_check = BRANCH_HALT_ENABLE,
.clkr = {
.enable_reg = 0xcc,
.enable_mask = BIT(10),
.hw.init = &(struct clk_init_data){
.name = "audio_slimbus_clk",
.parent_hws = (const struct clk_hw*[]){
&slimbus_src.clkr.hw,
},
.num_parents = 1,
.ops = &clk_branch_ops,
.flags = CLK_SET_RATE_PARENT,
},
},
};
static struct clk_branch sps_slimbus_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 = "sps_slimbus_clk",
.parent_hws = (const struct clk_hw*[]){
&slimbus_src.clkr.hw,
},
.num_parents = 1,
.ops = &clk_branch_ops,
.flags = CLK_SET_RATE_PARENT,
},
},
};
static struct clk_regmap *lcc_msm8960_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,
[SLIMBUS_SRC] = &slimbus_src.clkr,
[AUDIO_SLIMBUS_CLK] = &audio_slimbus_clk.clkr,
[SPS_SLIMBUS_CLK] = &sps_slimbus_clk.clkr,
[CODEC_I2S_MIC_OSR_SRC] = &codec_i2s_mic_osr_src.clkr,
[CODEC_I2S_MIC_OSR_CLK] = &codec_i2s_mic_osr_clk.clkr,
[CODEC_I2S_MIC_DIV_CLK] = &codec_i2s_mic_div_clk.clkr,
[CODEC_I2S_MIC_BIT_DIV_CLK] = &codec_i2s_mic_bit_div_clk.clkr,
[CODEC_I2S_MIC_BIT_CLK] = &codec_i2s_mic_bit_clk.clkr,
[SPARE_I2S_MIC_OSR_SRC] = &spare_i2s_mic_osr_src.clkr,
[SPARE_I2S_MIC_OSR_CLK] = &spare_i2s_mic_osr_clk.clkr,
[SPARE_I2S_MIC_DIV_CLK] = &spare_i2s_mic_div_clk.clkr,
[SPARE_I2S_MIC_BIT_DIV_CLK] = &spare_i2s_mic_bit_div_clk.clkr,
[SPARE_I2S_MIC_BIT_CLK] = &spare_i2s_mic_bit_clk.clkr,
[CODEC_I2S_SPKR_OSR_SRC] = &codec_i2s_spkr_osr_src.clkr,
[CODEC_I2S_SPKR_OSR_CLK] = &codec_i2s_spkr_osr_clk.clkr,
[CODEC_I2S_SPKR_DIV_CLK] = &codec_i2s_spkr_div_clk.clkr,
[CODEC_I2S_SPKR_BIT_DIV_CLK] = &codec_i2s_spkr_bit_div_clk.clkr,
[CODEC_I2S_SPKR_BIT_CLK] = &codec_i2s_spkr_bit_clk.clkr,
[SPARE_I2S_SPKR_OSR_SRC] = &spare_i2s_spkr_osr_src.clkr,
[SPARE_I2S_SPKR_OSR_CLK] = &spare_i2s_spkr_osr_clk.clkr,
[SPARE_I2S_SPKR_DIV_CLK] = &spare_i2s_spkr_div_clk.clkr,
[SPARE_I2S_SPKR_BIT_DIV_CLK] = &spare_i2s_spkr_bit_div_clk.clkr,
[SPARE_I2S_SPKR_BIT_CLK] = &spare_i2s_spkr_bit_clk.clkr,
};
static const struct regmap_config lcc_msm8960_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.max_register = 0xfc,
.fast_io = true,
};
static const struct qcom_cc_desc lcc_msm8960_desc = {
.config = &lcc_msm8960_regmap_config,
.clks = lcc_msm8960_clks,
.num_clks = ARRAY_SIZE(lcc_msm8960_clks),
};
static const struct of_device_id lcc_msm8960_match_table[] = {
{ .compatible = "qcom,lcc-msm8960" },
{ .compatible = "qcom,lcc-apq8064" },
{ .compatible = "qcom,lcc-mdm9615" },
{ }
};
MODULE_DEVICE_TABLE(of, lcc_msm8960_match_table);
static int lcc_msm8960_probe(struct platform_device *pdev)
{
u32 val;
struct regmap *regmap;
/* patch for the cxo <-> pxo difference */
if (of_device_is_compatible(pdev->dev.of_node, "qcom,lcc-mdm9615")) {
pxo_parent_data.fw_name = "cxo";
pxo_parent_data.name = "cxo_board";
lcc_pxo_pll4[0].fw_name = "cxo";
lcc_pxo_pll4[0].name = "cxo_board";
}
regmap = qcom_cc_map(pdev, &lcc_msm8960_desc);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
/* Use the correct frequency plan depending on speed of PLL4 */
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;
codec_i2s_mic_osr_src.freq_tbl = clk_tbl_aif_osr_492;
spare_i2s_mic_osr_src.freq_tbl = clk_tbl_aif_osr_492;
codec_i2s_spkr_osr_src.freq_tbl = clk_tbl_aif_osr_492;
spare_i2s_spkr_osr_src.freq_tbl = clk_tbl_aif_osr_492;
pcm_src.freq_tbl = clk_tbl_pcm_492;
}
/* Enable PLL4 source on the LPASS Primary PLL Mux */
regmap_write(regmap, 0xc4, 0x1);
return qcom_cc_really_probe(&pdev->dev, &lcc_msm8960_desc, regmap);
}
static struct platform_driver lcc_msm8960_driver = {
.probe = lcc_msm8960_probe,
.driver = {
.name = "lcc-msm8960",
.of_match_table = lcc_msm8960_match_table,
},
};
module_platform_driver(lcc_msm8960_driver);
MODULE_DESCRIPTION("QCOM LCC MSM8960 Driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:lcc-msm8960");
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