nathan/Chromebook-Device-Nyan-NVIDIA-Tegra-K1-T124-Upstream-Linux-3.10-LTS-Kernel
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Initial commit; kernel source import

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Nathan
2025-04-06 23:50:55 -05:00
commit 25c6d769f4
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drivers/clk/samsung/Makefile Normal file
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#
# Samsung Clock specific Makefile
#
obj-$(CONFIG_COMMON_CLK) += clk.o clk-pll.o
obj-$(CONFIG_ARCH_EXYNOS4) += clk-exynos4.o
obj-$(CONFIG_SOC_EXYNOS5250) += clk-exynos5250.o
obj-$(CONFIG_SOC_EXYNOS5440) += clk-exynos5440.o

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drivers/clk/samsung/clk-exynos4.c Normal file
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drivers/clk/samsung/clk-exynos5250.c Normal file
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/*
* Copyright (c) 2013 Samsung Electronics Co., Ltd.
* Copyright (c) 2013 Linaro Ltd.
* Author: Thomas Abraham <thomas.ab@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Common Clock Framework support for Exynos5250 SoC.
*/
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include "clk.h"
#include "clk-pll.h"
#define SRC_CPU 0x200
#define DIV_CPU0 0x500
#define SRC_CORE1 0x4204
#define SRC_TOP0 0x10210
#define SRC_TOP2 0x10218
#define SRC_GSCL 0x10220
#define SRC_DISP1_0 0x1022c
#define SRC_MAU 0x10240
#define SRC_FSYS 0x10244
#define SRC_GEN 0x10248
#define SRC_PERIC0 0x10250
#define SRC_PERIC1 0x10254
#define SRC_MASK_GSCL 0x10320
#define SRC_MASK_DISP1_0 0x1032c
#define SRC_MASK_MAU 0x10334
#define SRC_MASK_FSYS 0x10340
#define SRC_MASK_GEN 0x10344
#define SRC_MASK_PERIC0 0x10350
#define SRC_MASK_PERIC1 0x10354
#define DIV_TOP0 0x10510
#define DIV_TOP1 0x10514
#define DIV_GSCL 0x10520
#define DIV_DISP1_0 0x1052c
#define DIV_GEN 0x1053c
#define DIV_MAU 0x10544
#define DIV_FSYS0 0x10548
#define DIV_FSYS1 0x1054c
#define DIV_FSYS2 0x10550
#define DIV_PERIC0 0x10558
#define DIV_PERIC1 0x1055c
#define DIV_PERIC2 0x10560
#define DIV_PERIC3 0x10564
#define DIV_PERIC4 0x10568
#define DIV_PERIC5 0x1056c
#define GATE_IP_GSCL 0x10920
#define GATE_IP_MFC 0x1092c
#define GATE_IP_GEN 0x10934
#define GATE_IP_FSYS 0x10944
#define GATE_IP_PERIC 0x10950
#define GATE_IP_PERIS 0x10960
#define SRC_CDREX 0x20200
#define PLL_DIV2_SEL 0x20a24
#define GATE_IP_DISP1 0x10928
/*
* Let each supported clock get a unique id. This id is used to lookup the clock
* for device tree based platforms. The clocks are categorized into three
* sections: core, sclk gate and bus interface gate clocks.
*
* When adding a new clock to this list, it is advised to choose a clock
* category and add it to the end of that category. That is because the the
* device tree source file is referring to these ids and any change in the
* sequence number of existing clocks will require corresponding change in the
* device tree files. This limitation would go away when pre-processor support
* for dtc would be available.
*/
enum exynos5250_clks {
none,
/* core clocks */
fin_pll,
/* gate for special clocks (sclk) */
sclk_cam_bayer = 128, sclk_cam0, sclk_cam1, sclk_gscl_wa, sclk_gscl_wb,
sclk_fimd1, sclk_mipi1, sclk_dp, sclk_hdmi, sclk_pixel, sclk_audio0,
sclk_mmc0, sclk_mmc1, sclk_mmc2, sclk_mmc3, sclk_sata, sclk_usb3,
sclk_jpeg, sclk_uart0, sclk_uart1, sclk_uart2, sclk_uart3, sclk_pwm,
sclk_audio1, sclk_audio2, sclk_spdif, sclk_spi0, sclk_spi1, sclk_spi2,
/* gate clocks */
gscl0 = 256, gscl1, gscl2, gscl3, gscl_wa, gscl_wb, smmu_gscl0,
smmu_gscl1, smmu_gscl2, smmu_gscl3, mfc, smmu_mfcl, smmu_mfcr, rotator,
jpeg, mdma1, smmu_rotator, smmu_jpeg, smmu_mdma1, pdma0, pdma1, sata,
usbotg, mipi_hsi, sdmmc0, sdmmc1, sdmmc2, sdmmc3, sromc, usb2, usb3,
sata_phyctrl, sata_phyi2c, uart0, uart1, uart2, uart3, uart4, i2c0,
i2c1, i2c2, i2c3, i2c4, i2c5, i2c6, i2c7, i2c_hdmi, adc, spi0, spi1,
spi2, i2s1, i2s2, pcm1, pcm2, pwm, spdif, ac97, hsi2c0, hsi2c1, hsi2c2,
hsi2c3, chipid, sysreg, pmu, cmu_top, cmu_core, cmu_mem, tzpc0, tzpc1,
tzpc2, tzpc3, tzpc4, tzpc5, tzpc6, tzpc7, tzpc8, tzpc9, hdmi_cec, mct,
wdt, rtc, tmu, fimd1, mie1, dsim0, dp, mixer, hdmi,
nr_clks,
};
/*
* list of controller registers to be saved and restored during a
* suspend/resume cycle.
*/
static __initdata unsigned long exynos5250_clk_regs[] = {
SRC_CPU,
DIV_CPU0,
SRC_CORE1,
SRC_TOP0,
SRC_TOP2,
SRC_GSCL,
SRC_DISP1_0,
SRC_MAU,
SRC_FSYS,
SRC_GEN,
SRC_PERIC0,
SRC_PERIC1,
SRC_MASK_GSCL,
SRC_MASK_DISP1_0,
SRC_MASK_MAU,
SRC_MASK_FSYS,
SRC_MASK_GEN,
SRC_MASK_PERIC0,
SRC_MASK_PERIC1,
DIV_TOP0,
DIV_TOP1,
DIV_GSCL,
DIV_DISP1_0,
DIV_GEN,
DIV_MAU,
DIV_FSYS0,
DIV_FSYS1,
DIV_FSYS2,
DIV_PERIC0,
DIV_PERIC1,
DIV_PERIC2,
DIV_PERIC3,
DIV_PERIC4,
DIV_PERIC5,
GATE_IP_GSCL,
GATE_IP_MFC,
GATE_IP_GEN,
GATE_IP_FSYS,
GATE_IP_PERIC,
GATE_IP_PERIS,
SRC_CDREX,
PLL_DIV2_SEL,
GATE_IP_DISP1,
};
/* list of all parent clock list */
PNAME(mout_apll_p) = { "fin_pll", "fout_apll", };
PNAME(mout_cpu_p) = { "mout_apll", "sclk_mpll", };
PNAME(mout_mpll_fout_p) = { "fout_mplldiv2", "fout_mpll" };
PNAME(mout_mpll_p) = { "fin_pll", "mout_mpll_fout" };
PNAME(mout_bpll_fout_p) = { "fout_bplldiv2", "fout_bpll" };
PNAME(mout_bpll_p) = { "fin_pll", "mout_bpll_fout" };
PNAME(mout_vpllsrc_p) = { "fin_pll", "sclk_hdmi27m" };
PNAME(mout_vpll_p) = { "mout_vpllsrc", "fout_vpll" };
PNAME(mout_cpll_p) = { "fin_pll", "fout_cpll" };
PNAME(mout_epll_p) = { "fin_pll", "fout_epll" };
PNAME(mout_mpll_user_p) = { "fin_pll", "sclk_mpll" };
PNAME(mout_bpll_user_p) = { "fin_pll", "sclk_bpll" };
PNAME(mout_aclk166_p) = { "sclk_cpll", "sclk_mpll_user" };
PNAME(mout_aclk200_p) = { "sclk_mpll_user", "sclk_bpll_user" };
PNAME(mout_hdmi_p) = { "div_hdmi_pixel", "sclk_hdmiphy" };
PNAME(mout_usb3_p) = { "sclk_mpll_user", "sclk_cpll" };
PNAME(mout_group1_p) = { "fin_pll", "fin_pll", "sclk_hdmi27m",
"sclk_dptxphy", "sclk_uhostphy", "sclk_hdmiphy",
"sclk_mpll_user", "sclk_epll", "sclk_vpll",
"sclk_cpll" };
PNAME(mout_audio0_p) = { "cdclk0", "fin_pll", "sclk_hdmi27m", "sclk_dptxphy",
"sclk_uhostphy", "sclk_hdmiphy",
"sclk_mpll_user", "sclk_epll", "sclk_vpll",
"sclk_cpll" };
PNAME(mout_audio1_p) = { "cdclk1", "fin_pll", "sclk_hdmi27m", "sclk_dptxphy",
"sclk_uhostphy", "sclk_hdmiphy",
"sclk_mpll_user", "sclk_epll", "sclk_vpll",
"sclk_cpll" };
PNAME(mout_audio2_p) = { "cdclk2", "fin_pll", "sclk_hdmi27m", "sclk_dptxphy",
"sclk_uhostphy", "sclk_hdmiphy",
"sclk_mpll_user", "sclk_epll", "sclk_vpll",
"sclk_cpll" };
PNAME(mout_spdif_p) = { "sclk_audio0", "sclk_audio1", "sclk_audio2",
"spdif_extclk" };
/* fixed rate clocks generated outside the soc */
struct samsung_fixed_rate_clock exynos5250_fixed_rate_ext_clks[] __initdata = {
FRATE(fin_pll, "fin_pll", NULL, CLK_IS_ROOT, 0),
};
/* fixed rate clocks generated inside the soc */
struct samsung_fixed_rate_clock exynos5250_fixed_rate_clks[] __initdata = {
FRATE(none, "sclk_hdmiphy", NULL, CLK_IS_ROOT, 24000000),
FRATE(none, "sclk_hdmi27m", NULL, CLK_IS_ROOT, 27000000),
FRATE(none, "sclk_dptxphy", NULL, CLK_IS_ROOT, 24000000),
FRATE(none, "sclk_uhostphy", NULL, CLK_IS_ROOT, 48000000),
};
struct samsung_fixed_factor_clock exynos5250_fixed_factor_clks[] __initdata = {
FFACTOR(none, "fout_mplldiv2", "fout_mpll", 1, 2, 0),
FFACTOR(none, "fout_bplldiv2", "fout_bpll", 1, 2, 0),
};
struct samsung_mux_clock exynos5250_mux_clks[] __initdata = {
MUX_A(none, "mout_apll", mout_apll_p, SRC_CPU, 0, 1, "mout_apll"),
MUX_A(none, "mout_cpu", mout_cpu_p, SRC_CPU, 16, 1, "mout_cpu"),
MUX(none, "mout_mpll_fout", mout_mpll_fout_p, PLL_DIV2_SEL, 4, 1),
MUX_A(none, "sclk_mpll", mout_mpll_p, SRC_CORE1, 8, 1, "mout_mpll"),
MUX(none, "mout_bpll_fout", mout_bpll_fout_p, PLL_DIV2_SEL, 0, 1),
MUX(none, "sclk_bpll", mout_bpll_p, SRC_CDREX, 0, 1),
MUX(none, "mout_vpllsrc", mout_vpllsrc_p, SRC_TOP2, 0, 1),
MUX(none, "sclk_vpll", mout_vpll_p, SRC_TOP2, 16, 1),
MUX(none, "sclk_epll", mout_epll_p, SRC_TOP2, 12, 1),
MUX(none, "sclk_cpll", mout_cpll_p, SRC_TOP2, 8, 1),
MUX(none, "sclk_mpll_user", mout_mpll_user_p, SRC_TOP2, 20, 1),
MUX(none, "sclk_bpll_user", mout_bpll_user_p, SRC_TOP2, 24, 1),
MUX(none, "mout_aclk166", mout_aclk166_p, SRC_TOP0, 8, 1),
MUX(none, "mout_aclk333", mout_aclk166_p, SRC_TOP0, 16, 1),
MUX(none, "mout_aclk200", mout_aclk200_p, SRC_TOP0, 12, 1),
MUX(none, "mout_cam_bayer", mout_group1_p, SRC_GSCL, 12, 4),
MUX(none, "mout_cam0", mout_group1_p, SRC_GSCL, 16, 4),
MUX(none, "mout_cam1", mout_group1_p, SRC_GSCL, 20, 4),
MUX(none, "mout_gscl_wa", mout_group1_p, SRC_GSCL, 24, 4),
MUX(none, "mout_gscl_wb", mout_group1_p, SRC_GSCL, 28, 4),
MUX(none, "mout_fimd1", mout_group1_p, SRC_DISP1_0, 0, 4),
MUX(none, "mout_mipi1", mout_group1_p, SRC_DISP1_0, 12, 4),
MUX(none, "mout_dp", mout_group1_p, SRC_DISP1_0, 16, 4),
MUX(none, "mout_hdmi", mout_hdmi_p, SRC_DISP1_0, 20, 1),
MUX(none, "mout_audio0", mout_audio0_p, SRC_MAU, 0, 4),
MUX(none, "mout_mmc0", mout_group1_p, SRC_FSYS, 0, 4),
MUX(none, "mout_mmc1", mout_group1_p, SRC_FSYS, 4, 4),
MUX(none, "mout_mmc2", mout_group1_p, SRC_FSYS, 8, 4),
MUX(none, "mout_mmc3", mout_group1_p, SRC_FSYS, 12, 4),
MUX(none, "mout_sata", mout_aclk200_p, SRC_FSYS, 24, 1),
MUX(none, "mout_usb3", mout_usb3_p, SRC_FSYS, 28, 1),
MUX(none, "mout_jpeg", mout_group1_p, SRC_GEN, 0, 4),
MUX(none, "mout_uart0", mout_group1_p, SRC_PERIC0, 0, 4),
MUX(none, "mout_uart1", mout_group1_p, SRC_PERIC0, 4, 4),
MUX(none, "mout_uart2", mout_group1_p, SRC_PERIC0, 8, 4),
MUX(none, "mout_uart3", mout_group1_p, SRC_PERIC0, 12, 4),
MUX(none, "mout_pwm", mout_group1_p, SRC_PERIC0, 24, 4),
MUX(none, "mout_audio1", mout_audio1_p, SRC_PERIC1, 0, 4),
MUX(none, "mout_audio2", mout_audio2_p, SRC_PERIC1, 4, 4),
MUX(none, "mout_spdif", mout_spdif_p, SRC_PERIC1, 8, 2),
MUX(none, "mout_spi0", mout_group1_p, SRC_PERIC1, 16, 4),
MUX(none, "mout_spi1", mout_group1_p, SRC_PERIC1, 20, 4),
MUX(none, "mout_spi2", mout_group1_p, SRC_PERIC1, 24, 4),
};
struct samsung_div_clock exynos5250_div_clks[] __initdata = {
DIV(none, "div_arm", "mout_cpu", DIV_CPU0, 0, 3),
DIV(none, "sclk_apll", "mout_apll", DIV_CPU0, 24, 3),
DIV(none, "aclk66_pre", "sclk_mpll_user", DIV_TOP1, 24, 3),
DIV(none, "aclk66", "aclk66_pre", DIV_TOP0, 0, 3),
DIV(none, "aclk266", "sclk_mpll_user", DIV_TOP0, 16, 3),
DIV(none, "aclk166", "mout_aclk166", DIV_TOP0, 8, 3),
DIV(none, "aclk333", "mout_aclk333", DIV_TOP0, 20, 3),
DIV(none, "aclk200", "mout_aclk200", DIV_TOP0, 12, 3),
DIV(none, "div_cam_bayer", "mout_cam_bayer", DIV_GSCL, 12, 4),
DIV(none, "div_cam0", "mout_cam0", DIV_GSCL, 16, 4),
DIV(none, "div_cam1", "mout_cam1", DIV_GSCL, 20, 4),
DIV(none, "div_gscl_wa", "mout_gscl_wa", DIV_GSCL, 24, 4),
DIV(none, "div_gscl_wb", "mout_gscl_wb", DIV_GSCL, 28, 4),
DIV(none, "div_fimd1", "mout_fimd1", DIV_DISP1_0, 0, 4),
DIV(none, "div_mipi1", "mout_mipi1", DIV_DISP1_0, 16, 4),
DIV(none, "div_dp", "mout_dp", DIV_DISP1_0, 24, 4),
DIV(none, "div_jpeg", "mout_jpeg", DIV_GEN, 4, 4),
DIV(none, "div_audio0", "mout_audio0", DIV_MAU, 0, 4),
DIV(none, "div_pcm0", "sclk_audio0", DIV_MAU, 4, 8),
DIV(none, "div_sata", "mout_sata", DIV_FSYS0, 20, 4),
DIV(none, "div_usb3", "mout_usb3", DIV_FSYS0, 24, 4),
DIV(none, "div_mmc0", "mout_mmc0", DIV_FSYS1, 0, 4),
DIV(none, "div_mmc1", "mout_mmc1", DIV_FSYS1, 16, 4),
DIV(none, "div_mmc2", "mout_mmc2", DIV_FSYS2, 0, 4),
DIV(none, "div_mmc3", "mout_mmc3", DIV_FSYS2, 16, 4),
DIV(none, "div_uart0", "mout_uart0", DIV_PERIC0, 0, 4),
DIV(none, "div_uart1", "mout_uart1", DIV_PERIC0, 4, 4),
DIV(none, "div_uart2", "mout_uart2", DIV_PERIC0, 8, 4),
DIV(none, "div_uart3", "mout_uart3", DIV_PERIC0, 12, 4),
DIV(none, "div_spi0", "mout_spi0", DIV_PERIC1, 0, 4),
DIV(none, "div_spi1", "mout_spi1", DIV_PERIC1, 16, 4),
DIV(none, "div_spi2", "mout_spi2", DIV_PERIC2, 0, 4),
DIV(none, "div_pwm", "mout_pwm", DIV_PERIC3, 0, 4),
DIV(none, "div_audio1", "mout_audio1", DIV_PERIC4, 0, 4),
DIV(none, "div_pcm1", "sclk_audio1", DIV_PERIC4, 4, 8),
DIV(none, "div_audio2", "mout_audio2", DIV_PERIC4, 16, 4),
DIV(none, "div_pcm2", "sclk_audio2", DIV_PERIC4, 20, 8),
DIV(none, "div_i2s1", "sclk_audio1", DIV_PERIC5, 0, 6),
DIV(none, "div_i2s2", "sclk_audio2", DIV_PERIC5, 8, 6),
DIV(sclk_pixel, "div_hdmi_pixel", "sclk_vpll", DIV_DISP1_0, 28, 4),
DIV_A(none, "armclk", "div_arm", DIV_CPU0, 28, 3, "armclk"),
DIV_F(none, "div_mipi1_pre", "div_mipi1",
DIV_DISP1_0, 20, 4, CLK_SET_RATE_PARENT, 0),
DIV_F(none, "div_mmc_pre0", "div_mmc0",
DIV_FSYS1, 8, 8, CLK_SET_RATE_PARENT, 0),
DIV_F(none, "div_mmc_pre1", "div_mmc1",
DIV_FSYS1, 24, 8, CLK_SET_RATE_PARENT, 0),
DIV_F(none, "div_mmc_pre2", "div_mmc2",
DIV_FSYS2, 8, 8, CLK_SET_RATE_PARENT, 0),
DIV_F(none, "div_mmc_pre3", "div_mmc3",
DIV_FSYS2, 24, 8, CLK_SET_RATE_PARENT, 0),
DIV_F(none, "div_spi_pre0", "div_spi0",
DIV_PERIC1, 8, 8, CLK_SET_RATE_PARENT, 0),
DIV_F(none, "div_spi_pre1", "div_spi1",
DIV_PERIC1, 24, 8, CLK_SET_RATE_PARENT, 0),
DIV_F(none, "div_spi_pre2", "div_spi2",
DIV_PERIC2, 8, 8, CLK_SET_RATE_PARENT, 0),
};
struct samsung_gate_clock exynos5250_gate_clks[] __initdata = {
GATE(gscl0, "gscl0", "none", GATE_IP_GSCL, 0, 0, 0),
GATE(gscl1, "gscl1", "none", GATE_IP_GSCL, 1, 0, 0),
GATE(gscl2, "gscl2", "aclk266", GATE_IP_GSCL, 2, 0, 0),
GATE(gscl3, "gscl3", "aclk266", GATE_IP_GSCL, 3, 0, 0),
GATE(gscl_wa, "gscl_wa", "div_gscl_wa", GATE_IP_GSCL, 5, 0, 0),
GATE(gscl_wb, "gscl_wb", "div_gscl_wb", GATE_IP_GSCL, 6, 0, 0),
GATE(smmu_gscl0, "smmu_gscl0", "aclk266", GATE_IP_GSCL, 7, 0, 0),
GATE(smmu_gscl1, "smmu_gscl1", "aclk266", GATE_IP_GSCL, 8, 0, 0),
GATE(smmu_gscl2, "smmu_gscl2", "aclk266", GATE_IP_GSCL, 9, 0, 0),
GATE(smmu_gscl3, "smmu_gscl3", "aclk266", GATE_IP_GSCL, 10, 0, 0),
GATE(mfc, "mfc", "aclk333", GATE_IP_MFC, 0, 0, 0),
GATE(smmu_mfcl, "smmu_mfcl", "aclk333", GATE_IP_MFC, 1, 0, 0),
GATE(smmu_mfcr, "smmu_mfcr", "aclk333", GATE_IP_MFC, 2, 0, 0),
GATE(rotator, "rotator", "aclk266", GATE_IP_GEN, 1, 0, 0),
GATE(jpeg, "jpeg", "aclk166", GATE_IP_GEN, 2, 0, 0),
GATE(mdma1, "mdma1", "aclk266", GATE_IP_GEN, 4, 0, 0),
GATE(smmu_rotator, "smmu_rotator", "aclk266", GATE_IP_GEN, 6, 0, 0),
GATE(smmu_jpeg, "smmu_jpeg", "aclk166", GATE_IP_GEN, 7, 0, 0),
GATE(smmu_mdma1, "smmu_mdma1", "aclk266", GATE_IP_GEN, 9, 0, 0),
GATE(pdma0, "pdma0", "aclk200", GATE_IP_FSYS, 1, 0, 0),
GATE(pdma1, "pdma1", "aclk200", GATE_IP_FSYS, 2, 0, 0),
GATE(sata, "sata", "aclk200", GATE_IP_FSYS, 6, 0, 0),
GATE(usbotg, "usbotg", "aclk200", GATE_IP_FSYS, 7, 0, 0),
GATE(mipi_hsi, "mipi_hsi", "aclk200", GATE_IP_FSYS, 8, 0, 0),
GATE(sdmmc0, "sdmmc0", "aclk200", GATE_IP_FSYS, 12, 0, 0),
GATE(sdmmc1, "sdmmc1", "aclk200", GATE_IP_FSYS, 13, 0, 0),
GATE(sdmmc2, "sdmmc2", "aclk200", GATE_IP_FSYS, 14, 0, 0),
GATE(sdmmc3, "sdmmc3", "aclk200", GATE_IP_FSYS, 15, 0, 0),
GATE(sromc, "sromc", "aclk200", GATE_IP_FSYS, 17, 0, 0),
GATE(usb2, "usb2", "aclk200", GATE_IP_FSYS, 18, 0, 0),
GATE(usb3, "usb3", "aclk200", GATE_IP_FSYS, 19, 0, 0),
GATE(sata_phyctrl, "sata_phyctrl", "aclk200", GATE_IP_FSYS, 24, 0, 0),
GATE(sata_phyi2c, "sata_phyi2c", "aclk200", GATE_IP_FSYS, 25, 0, 0),
GATE(uart0, "uart0", "aclk66", GATE_IP_PERIC, 0, 0, 0),
GATE(uart1, "uart1", "aclk66", GATE_IP_PERIC, 1, 0, 0),
GATE(uart2, "uart2", "aclk66", GATE_IP_PERIC, 2, 0, 0),
GATE(uart3, "uart3", "aclk66", GATE_IP_PERIC, 3, 0, 0),
GATE(uart4, "uart4", "aclk66", GATE_IP_PERIC, 4, 0, 0),
GATE(i2c0, "i2c0", "aclk66", GATE_IP_PERIC, 6, 0, 0),
GATE(i2c1, "i2c1", "aclk66", GATE_IP_PERIC, 7, 0, 0),
GATE(i2c2, "i2c2", "aclk66", GATE_IP_PERIC, 8, 0, 0),
GATE(i2c3, "i2c3", "aclk66", GATE_IP_PERIC, 9, 0, 0),
GATE(i2c4, "i2c4", "aclk66", GATE_IP_PERIC, 10, 0, 0),
GATE(i2c5, "i2c5", "aclk66", GATE_IP_PERIC, 11, 0, 0),
GATE(i2c6, "i2c6", "aclk66", GATE_IP_PERIC, 12, 0, 0),
GATE(i2c7, "i2c7", "aclk66", GATE_IP_PERIC, 13, 0, 0),
GATE(i2c_hdmi, "i2c_hdmi", "aclk66", GATE_IP_PERIC, 14, 0, 0),
GATE(adc, "adc", "aclk66", GATE_IP_PERIC, 15, 0, 0),
GATE(spi0, "spi0", "aclk66", GATE_IP_PERIC, 16, 0, 0),
GATE(spi1, "spi1", "aclk66", GATE_IP_PERIC, 17, 0, 0),
GATE(spi2, "spi2", "aclk66", GATE_IP_PERIC, 18, 0, 0),
GATE(i2s1, "i2s1", "aclk66", GATE_IP_PERIC, 20, 0, 0),
GATE(i2s2, "i2s2", "aclk66", GATE_IP_PERIC, 21, 0, 0),
GATE(pcm1, "pcm1", "aclk66", GATE_IP_PERIC, 22, 0, 0),
GATE(pcm2, "pcm2", "aclk66", GATE_IP_PERIC, 23, 0, 0),
GATE(pwm, "pwm", "aclk66", GATE_IP_PERIC, 24, 0, 0),
GATE(spdif, "spdif", "aclk66", GATE_IP_PERIC, 26, 0, 0),
GATE(ac97, "ac97", "aclk66", GATE_IP_PERIC, 27, 0, 0),
GATE(hsi2c0, "hsi2c0", "aclk66", GATE_IP_PERIC, 28, 0, 0),
GATE(hsi2c1, "hsi2c1", "aclk66", GATE_IP_PERIC, 29, 0, 0),
GATE(hsi2c2, "hsi2c2", "aclk66", GATE_IP_PERIC, 30, 0, 0),
GATE(hsi2c3, "hsi2c3", "aclk66", GATE_IP_PERIC, 31, 0, 0),
GATE(chipid, "chipid", "aclk66", GATE_IP_PERIS, 0, 0, 0),
GATE(sysreg, "sysreg", "aclk66", GATE_IP_PERIS, 1, 0, 0),
GATE(pmu, "pmu", "aclk66", GATE_IP_PERIS, 2, CLK_IGNORE_UNUSED, 0),
GATE(tzpc0, "tzpc0", "aclk66", GATE_IP_PERIS, 6, 0, 0),
GATE(tzpc1, "tzpc1", "aclk66", GATE_IP_PERIS, 7, 0, 0),
GATE(tzpc2, "tzpc2", "aclk66", GATE_IP_PERIS, 8, 0, 0),
GATE(tzpc3, "tzpc3", "aclk66", GATE_IP_PERIS, 9, 0, 0),
GATE(tzpc4, "tzpc4", "aclk66", GATE_IP_PERIS, 10, 0, 0),
GATE(tzpc5, "tzpc5", "aclk66", GATE_IP_PERIS, 11, 0, 0),
GATE(tzpc6, "tzpc6", "aclk66", GATE_IP_PERIS, 12, 0, 0),
GATE(tzpc7, "tzpc7", "aclk66", GATE_IP_PERIS, 13, 0, 0),
GATE(tzpc8, "tzpc8", "aclk66", GATE_IP_PERIS, 14, 0, 0),
GATE(tzpc9, "tzpc9", "aclk66", GATE_IP_PERIS, 15, 0, 0),
GATE(hdmi_cec, "hdmi_cec", "aclk66", GATE_IP_PERIS, 16, 0, 0),
GATE(mct, "mct", "aclk66", GATE_IP_PERIS, 18, 0, 0),
GATE(wdt, "wdt", "aclk66", GATE_IP_PERIS, 19, 0, 0),
GATE(rtc, "rtc", "aclk66", GATE_IP_PERIS, 20, 0, 0),
GATE(tmu, "tmu", "aclk66", GATE_IP_PERIS, 21, 0, 0),
GATE(cmu_top, "cmu_top", "aclk66",
GATE_IP_PERIS, 3, CLK_IGNORE_UNUSED, 0),
GATE(cmu_core, "cmu_core", "aclk66",
GATE_IP_PERIS, 4, CLK_IGNORE_UNUSED, 0),
GATE(cmu_mem, "cmu_mem", "aclk66",
GATE_IP_PERIS, 5, CLK_IGNORE_UNUSED, 0),
GATE(sclk_cam_bayer, "sclk_cam_bayer", "div_cam_bayer",
SRC_MASK_GSCL, 12, CLK_SET_RATE_PARENT, 0),
GATE(sclk_cam0, "sclk_cam0", "div_cam0",
SRC_MASK_GSCL, 16, CLK_SET_RATE_PARENT, 0),
GATE(sclk_cam1, "sclk_cam1", "div_cam1",
SRC_MASK_GSCL, 20, CLK_SET_RATE_PARENT, 0),
GATE(sclk_gscl_wa, "sclk_gscl_wa", "div_gscl_wa",
SRC_MASK_GSCL, 24, CLK_SET_RATE_PARENT, 0),
GATE(sclk_gscl_wb, "sclk_gscl_wb", "div_gscl_wb",
SRC_MASK_GSCL, 28, CLK_SET_RATE_PARENT, 0),
GATE(sclk_fimd1, "sclk_fimd1", "div_fimd1",
SRC_MASK_DISP1_0, 0, CLK_SET_RATE_PARENT, 0),
GATE(sclk_mipi1, "sclk_mipi1", "div_mipi1",
SRC_MASK_DISP1_0, 12, CLK_SET_RATE_PARENT, 0),
GATE(sclk_dp, "sclk_dp", "div_dp",
SRC_MASK_DISP1_0, 16, CLK_SET_RATE_PARENT, 0),
GATE(sclk_hdmi, "sclk_hdmi", "mout_hdmi",
SRC_MASK_DISP1_0, 20, 0, 0),
GATE(sclk_audio0, "sclk_audio0", "div_audio0",
SRC_MASK_MAU, 0, CLK_SET_RATE_PARENT, 0),
GATE(sclk_mmc0, "sclk_mmc0", "div_mmc_pre0",
SRC_MASK_FSYS, 0, CLK_SET_RATE_PARENT, 0),
GATE(sclk_mmc1, "sclk_mmc1", "div_mmc_pre1",
SRC_MASK_FSYS, 4, CLK_SET_RATE_PARENT, 0),
GATE(sclk_mmc2, "sclk_mmc2", "div_mmc_pre2",
SRC_MASK_FSYS, 8, CLK_SET_RATE_PARENT, 0),
GATE(sclk_mmc3, "sclk_mmc3", "div_mmc_pre3",
SRC_MASK_FSYS, 12, CLK_SET_RATE_PARENT, 0),
GATE(sclk_sata, "sclk_sata", "div_sata",
SRC_MASK_FSYS, 24, CLK_SET_RATE_PARENT, 0),
GATE(sclk_usb3, "sclk_usb3", "div_usb3",
SRC_MASK_FSYS, 28, CLK_SET_RATE_PARENT, 0),
GATE(sclk_jpeg, "sclk_jpeg", "div_jpeg",
SRC_MASK_GEN, 0, CLK_SET_RATE_PARENT, 0),
GATE(sclk_uart0, "sclk_uart0", "div_uart0",
SRC_MASK_PERIC0, 0, CLK_SET_RATE_PARENT, 0),
GATE(sclk_uart1, "sclk_uart1", "div_uart1",
SRC_MASK_PERIC0, 4, CLK_SET_RATE_PARENT, 0),
GATE(sclk_uart2, "sclk_uart2", "div_uart2",
SRC_MASK_PERIC0, 8, CLK_SET_RATE_PARENT, 0),
GATE(sclk_uart3, "sclk_uart3", "div_uart3",
SRC_MASK_PERIC0, 12, CLK_SET_RATE_PARENT, 0),
GATE(sclk_pwm, "sclk_pwm", "div_pwm",
SRC_MASK_PERIC0, 24, CLK_SET_RATE_PARENT, 0),
GATE(sclk_audio1, "sclk_audio1", "div_audio1",
SRC_MASK_PERIC1, 0, CLK_SET_RATE_PARENT, 0),
GATE(sclk_audio2, "sclk_audio2", "div_audio2",
SRC_MASK_PERIC1, 4, CLK_SET_RATE_PARENT, 0),
GATE(sclk_spdif, "sclk_spdif", "mout_spdif",
SRC_MASK_PERIC1, 4, 0, 0),
GATE(sclk_spi0, "sclk_spi0", "div_spi_pre0",
SRC_MASK_PERIC1, 16, CLK_SET_RATE_PARENT, 0),
GATE(sclk_spi1, "sclk_spi1", "div_spi_pre1",
SRC_MASK_PERIC1, 20, CLK_SET_RATE_PARENT, 0),
GATE(sclk_spi2, "sclk_spi2", "div_spi_pre2",
SRC_MASK_PERIC1, 24, CLK_SET_RATE_PARENT, 0),
GATE(fimd1, "fimd1", "aclk200", GATE_IP_DISP1, 0, 0, 0),
GATE(mie1, "mie1", "aclk200", GATE_IP_DISP1, 1, 0, 0),
GATE(dsim0, "dsim0", "aclk200", GATE_IP_DISP1, 3, 0, 0),
GATE(dp, "dp", "aclk200", GATE_IP_DISP1, 4, 0, 0),
GATE(mixer, "mixer", "aclk200", GATE_IP_DISP1, 5, 0, 0),
GATE(hdmi, "hdmi", "aclk200", GATE_IP_DISP1, 6, 0, 0),
};
static __initdata struct of_device_id ext_clk_match[] = {
{ .compatible = "samsung,clock-xxti", .data = (void *)0, },
{ },
};
/* register exynox5250 clocks */
void __init exynos5250_clk_init(struct device_node *np)
{
void __iomem *reg_base;
struct clk *apll, *mpll, *epll, *vpll, *bpll, *gpll, *cpll;
if (np) {
reg_base = of_iomap(np, 0);
if (!reg_base)
panic("%s: failed to map registers\n", __func__);
} else {
panic("%s: unable to determine soc\n", __func__);
}
samsung_clk_init(np, reg_base, nr_clks,
exynos5250_clk_regs, ARRAY_SIZE(exynos5250_clk_regs),
NULL, 0);
samsung_clk_of_register_fixed_ext(exynos5250_fixed_rate_ext_clks,
ARRAY_SIZE(exynos5250_fixed_rate_ext_clks),
ext_clk_match);
apll = samsung_clk_register_pll35xx("fout_apll", "fin_pll",
reg_base + 0x100);
mpll = samsung_clk_register_pll35xx("fout_mpll", "fin_pll",
reg_base + 0x4100);
bpll = samsung_clk_register_pll35xx("fout_bpll", "fin_pll",
reg_base + 0x20110);
gpll = samsung_clk_register_pll35xx("fout_gpll", "fin_pll",
reg_base + 0x10150);
cpll = samsung_clk_register_pll35xx("fout_cpll", "fin_pll",
reg_base + 0x10120);
epll = samsung_clk_register_pll36xx("fout_epll", "fin_pll",
reg_base + 0x10130);
vpll = samsung_clk_register_pll36xx("fout_vpll", "mout_vpllsrc",
reg_base + 0x10140);
samsung_clk_register_fixed_rate(exynos5250_fixed_rate_clks,
ARRAY_SIZE(exynos5250_fixed_rate_clks));
samsung_clk_register_fixed_factor(exynos5250_fixed_factor_clks,
ARRAY_SIZE(exynos5250_fixed_factor_clks));
samsung_clk_register_mux(exynos5250_mux_clks,
ARRAY_SIZE(exynos5250_mux_clks));
samsung_clk_register_div(exynos5250_div_clks,
ARRAY_SIZE(exynos5250_div_clks));
samsung_clk_register_gate(exynos5250_gate_clks,
ARRAY_SIZE(exynos5250_gate_clks));
pr_info("Exynos5250: clock setup completed, armclk=%ld\n",
_get_rate("armclk"));
}
CLK_OF_DECLARE(exynos5250_clk, "samsung,exynos5250-clock", exynos5250_clk_init);

138
drivers/clk/samsung/clk-exynos5440.c Normal file
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@@ -0,0 +1,138 @@
/*
* Copyright (c) 2013 Samsung Electronics Co., Ltd.
* Author: Thomas Abraham <thomas.ab@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Common Clock Framework support for Exynos5440 SoC.
*/
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include "clk.h"
#include "clk-pll.h"
#define CLKEN_OV_VAL 0xf8
#define CPU_CLK_STATUS 0xfc
#define MISC_DOUT1 0x558
/*
* Let each supported clock get a unique id. This id is used to lookup the clock
* for device tree based platforms.
*/
enum exynos5440_clks {
none, xtal, arm_clk,
spi_baud = 16, pb0_250, pr0_250, pr1_250, b_250, b_125, b_200, sata,
usb, gmac0, cs250, pb0_250_o, pr0_250_o, pr1_250_o, b_250_o, b_125_o,
b_200_o, sata_o, usb_o, gmac0_o, cs250_o,
nr_clks,
};
/* parent clock name list */
PNAME(mout_armclk_p) = { "cplla", "cpllb" };
PNAME(mout_spi_p) = { "div125", "div200" };
/* fixed rate clocks generated outside the soc */
struct samsung_fixed_rate_clock exynos5440_fixed_rate_ext_clks[] __initdata = {
FRATE(none, "xtal", NULL, CLK_IS_ROOT, 0),
};
/* fixed rate clocks */
struct samsung_fixed_rate_clock exynos5440_fixed_rate_clks[] __initdata = {
FRATE(none, "ppll", NULL, CLK_IS_ROOT, 1000000000),
FRATE(none, "usb_phy0", NULL, CLK_IS_ROOT, 60000000),
FRATE(none, "usb_phy1", NULL, CLK_IS_ROOT, 60000000),
FRATE(none, "usb_ohci12", NULL, CLK_IS_ROOT, 12000000),
FRATE(none, "usb_ohci48", NULL, CLK_IS_ROOT, 48000000),
};
/* fixed factor clocks */
struct samsung_fixed_factor_clock exynos5440_fixed_factor_clks[] __initdata = {
FFACTOR(none, "div250", "ppll", 1, 4, 0),
FFACTOR(none, "div200", "ppll", 1, 5, 0),
FFACTOR(none, "div125", "div250", 1, 2, 0),
};
/* mux clocks */
struct samsung_mux_clock exynos5440_mux_clks[] __initdata = {
MUX(none, "mout_spi", mout_spi_p, MISC_DOUT1, 5, 1),
MUX_A(arm_clk, "arm_clk", mout_armclk_p,
CPU_CLK_STATUS, 0, 1, "armclk"),
};
/* divider clocks */
struct samsung_div_clock exynos5440_div_clks[] __initdata = {
DIV(spi_baud, "div_spi", "mout_spi", MISC_DOUT1, 3, 2),
};
/* gate clocks */
struct samsung_gate_clock exynos5440_gate_clks[] __initdata = {
GATE(pb0_250, "pb0_250", "div250", CLKEN_OV_VAL, 3, 0, 0),
GATE(pr0_250, "pr0_250", "div250", CLKEN_OV_VAL, 4, 0, 0),
GATE(pr1_250, "pr1_250", "div250", CLKEN_OV_VAL, 5, 0, 0),
GATE(b_250, "b_250", "div250", CLKEN_OV_VAL, 9, 0, 0),
GATE(b_125, "b_125", "div125", CLKEN_OV_VAL, 10, 0, 0),
GATE(b_200, "b_200", "div200", CLKEN_OV_VAL, 11, 0, 0),
GATE(sata, "sata", "div200", CLKEN_OV_VAL, 12, 0, 0),
GATE(usb, "usb", "div200", CLKEN_OV_VAL, 13, 0, 0),
GATE(gmac0, "gmac0", "div200", CLKEN_OV_VAL, 14, 0, 0),
GATE(cs250, "cs250", "div250", CLKEN_OV_VAL, 19, 0, 0),
GATE(pb0_250_o, "pb0_250_o", "pb0_250", CLKEN_OV_VAL, 3, 0, 0),
GATE(pr0_250_o, "pr0_250_o", "pr0_250", CLKEN_OV_VAL, 4, 0, 0),
GATE(pr1_250_o, "pr1_250_o", "pr1_250", CLKEN_OV_VAL, 5, 0, 0),
GATE(b_250_o, "b_250_o", "b_250", CLKEN_OV_VAL, 9, 0, 0),
GATE(b_125_o, "b_125_o", "b_125", CLKEN_OV_VAL, 10, 0, 0),
GATE(b_200_o, "b_200_o", "b_200", CLKEN_OV_VAL, 11, 0, 0),
GATE(sata_o, "sata_o", "sata", CLKEN_OV_VAL, 12, 0, 0),
GATE(usb_o, "usb_o", "usb", CLKEN_OV_VAL, 13, 0, 0),
GATE(gmac0_o, "gmac0_o", "gmac", CLKEN_OV_VAL, 14, 0, 0),
GATE(cs250_o, "cs250_o", "cs250", CLKEN_OV_VAL, 19, 0, 0),
};
static __initdata struct of_device_id ext_clk_match[] = {
{ .compatible = "samsung,clock-xtal", .data = (void *)0, },
{},
};
/* register exynos5440 clocks */
void __init exynos5440_clk_init(struct device_node *np)
{
void __iomem *reg_base;
reg_base = of_iomap(np, 0);
if (!reg_base) {
pr_err("%s: failed to map clock controller registers,"
" aborting clock initialization\n", __func__);
return;
}
samsung_clk_init(np, reg_base, nr_clks, NULL, 0, NULL, 0);
samsung_clk_of_register_fixed_ext(exynos5440_fixed_rate_ext_clks,
ARRAY_SIZE(exynos5440_fixed_rate_ext_clks), ext_clk_match);
samsung_clk_register_pll2550x("cplla", "xtal", reg_base + 0x1c, 0x10);
samsung_clk_register_pll2550x("cpllb", "xtal", reg_base + 0x20, 0x10);
samsung_clk_register_fixed_rate(exynos5440_fixed_rate_clks,
ARRAY_SIZE(exynos5440_fixed_rate_clks));
samsung_clk_register_fixed_factor(exynos5440_fixed_factor_clks,
ARRAY_SIZE(exynos5440_fixed_factor_clks));
samsung_clk_register_mux(exynos5440_mux_clks,
ARRAY_SIZE(exynos5440_mux_clks));
samsung_clk_register_div(exynos5440_div_clks,
ARRAY_SIZE(exynos5440_div_clks));
samsung_clk_register_gate(exynos5440_gate_clks,
ARRAY_SIZE(exynos5440_gate_clks));
pr_info("Exynos5440: arm_clk = %ldHz\n", _get_rate("armclk"));
pr_info("exynos5440 clock initialization complete\n");
}
CLK_OF_DECLARE(exynos5440_clk, "samsung,exynos5440-clock", exynos5440_clk_init);

420
drivers/clk/samsung/clk-pll.c Normal file
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@@ -0,0 +1,420 @@
/*
* Copyright (c) 2013 Samsung Electronics Co., Ltd.
* Copyright (c) 2013 Linaro Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This file contains the utility functions to register the pll clocks.
*/
#include <linux/errno.h>
#include "clk.h"
#include "clk-pll.h"
/*
* PLL35xx Clock Type
*/
#define PLL35XX_MDIV_MASK (0x3FF)
#define PLL35XX_PDIV_MASK (0x3F)
#define PLL35XX_SDIV_MASK (0x7)
#define PLL35XX_MDIV_SHIFT (16)
#define PLL35XX_PDIV_SHIFT (8)
#define PLL35XX_SDIV_SHIFT (0)
struct samsung_clk_pll35xx {
struct clk_hw hw;
const void __iomem *con_reg;
};
#define to_clk_pll35xx(_hw) container_of(_hw, struct samsung_clk_pll35xx, hw)
static unsigned long samsung_pll35xx_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct samsung_clk_pll35xx *pll = to_clk_pll35xx(hw);
u32 mdiv, pdiv, sdiv, pll_con;
u64 fvco = parent_rate;
pll_con = __raw_readl(pll->con_reg);
mdiv = (pll_con >> PLL35XX_MDIV_SHIFT) & PLL35XX_MDIV_MASK;
pdiv = (pll_con >> PLL35XX_PDIV_SHIFT) & PLL35XX_PDIV_MASK;
sdiv = (pll_con >> PLL35XX_SDIV_SHIFT) & PLL35XX_SDIV_MASK;
fvco *= mdiv;
do_div(fvco, (pdiv << sdiv));
return (unsigned long)fvco;
}
static const struct clk_ops samsung_pll35xx_clk_ops = {
.recalc_rate = samsung_pll35xx_recalc_rate,
};
struct clk * __init samsung_clk_register_pll35xx(const char *name,
const char *pname, const void __iomem *con_reg)
{
struct samsung_clk_pll35xx *pll;
struct clk *clk;
struct clk_init_data init;
pll = kzalloc(sizeof(*pll), GFP_KERNEL);
if (!pll) {
pr_err("%s: could not allocate pll clk %s\n", __func__, name);
return NULL;
}
init.name = name;
init.ops = &samsung_pll35xx_clk_ops;
init.flags = CLK_GET_RATE_NOCACHE;
init.parent_names = &pname;
init.num_parents = 1;
pll->hw.init = &init;
pll->con_reg = con_reg;
clk = clk_register(NULL, &pll->hw);
if (IS_ERR(clk)) {
pr_err("%s: failed to register pll clock %s\n", __func__,
name);
kfree(pll);
}
if (clk_register_clkdev(clk, name, NULL))
pr_err("%s: failed to register lookup for %s", __func__, name);
return clk;
}
/*
* PLL36xx Clock Type
*/
#define PLL36XX_KDIV_MASK (0xFFFF)
#define PLL36XX_MDIV_MASK (0x1FF)
#define PLL36XX_PDIV_MASK (0x3F)
#define PLL36XX_SDIV_MASK (0x7)
#define PLL36XX_MDIV_SHIFT (16)
#define PLL36XX_PDIV_SHIFT (8)
#define PLL36XX_SDIV_SHIFT (0)
struct samsung_clk_pll36xx {
struct clk_hw hw;
const void __iomem *con_reg;
};
#define to_clk_pll36xx(_hw) container_of(_hw, struct samsung_clk_pll36xx, hw)
static unsigned long samsung_pll36xx_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct samsung_clk_pll36xx *pll = to_clk_pll36xx(hw);
u32 mdiv, pdiv, sdiv, pll_con0, pll_con1;
s16 kdiv;
u64 fvco = parent_rate;
pll_con0 = __raw_readl(pll->con_reg);
pll_con1 = __raw_readl(pll->con_reg + 4);
mdiv = (pll_con0 >> PLL36XX_MDIV_SHIFT) & PLL36XX_MDIV_MASK;
pdiv = (pll_con0 >> PLL36XX_PDIV_SHIFT) & PLL36XX_PDIV_MASK;
sdiv = (pll_con0 >> PLL36XX_SDIV_SHIFT) & PLL36XX_SDIV_MASK;
kdiv = (s16)(pll_con1 & PLL36XX_KDIV_MASK);
fvco *= (mdiv << 16) + kdiv;
do_div(fvco, (pdiv << sdiv));
fvco >>= 16;
return (unsigned long)fvco;
}
static const struct clk_ops samsung_pll36xx_clk_ops = {
.recalc_rate = samsung_pll36xx_recalc_rate,
};
struct clk * __init samsung_clk_register_pll36xx(const char *name,
const char *pname, const void __iomem *con_reg)
{
struct samsung_clk_pll36xx *pll;
struct clk *clk;
struct clk_init_data init;
pll = kzalloc(sizeof(*pll), GFP_KERNEL);
if (!pll) {
pr_err("%s: could not allocate pll clk %s\n", __func__, name);
return NULL;
}
init.name = name;
init.ops = &samsung_pll36xx_clk_ops;
init.flags = CLK_GET_RATE_NOCACHE;
init.parent_names = &pname;
init.num_parents = 1;
pll->hw.init = &init;
pll->con_reg = con_reg;
clk = clk_register(NULL, &pll->hw);
if (IS_ERR(clk)) {
pr_err("%s: failed to register pll clock %s\n", __func__,
name);
kfree(pll);
}
if (clk_register_clkdev(clk, name, NULL))
pr_err("%s: failed to register lookup for %s", __func__, name);
return clk;
}
/*
* PLL45xx Clock Type
*/
#define PLL45XX_MDIV_MASK (0x3FF)
#define PLL45XX_PDIV_MASK (0x3F)
#define PLL45XX_SDIV_MASK (0x7)
#define PLL45XX_MDIV_SHIFT (16)
#define PLL45XX_PDIV_SHIFT (8)
#define PLL45XX_SDIV_SHIFT (0)
struct samsung_clk_pll45xx {
struct clk_hw hw;
enum pll45xx_type type;
const void __iomem *con_reg;
};
#define to_clk_pll45xx(_hw) container_of(_hw, struct samsung_clk_pll45xx, hw)
static unsigned long samsung_pll45xx_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct samsung_clk_pll45xx *pll = to_clk_pll45xx(hw);
u32 mdiv, pdiv, sdiv, pll_con;
u64 fvco = parent_rate;
pll_con = __raw_readl(pll->con_reg);
mdiv = (pll_con >> PLL45XX_MDIV_SHIFT) & PLL45XX_MDIV_MASK;
pdiv = (pll_con >> PLL45XX_PDIV_SHIFT) & PLL45XX_PDIV_MASK;
sdiv = (pll_con >> PLL45XX_SDIV_SHIFT) & PLL45XX_SDIV_MASK;
if (pll->type == pll_4508)
sdiv = sdiv - 1;
fvco *= mdiv;
do_div(fvco, (pdiv << sdiv));
return (unsigned long)fvco;
}
static const struct clk_ops samsung_pll45xx_clk_ops = {
.recalc_rate = samsung_pll45xx_recalc_rate,
};
struct clk * __init samsung_clk_register_pll45xx(const char *name,
const char *pname, const void __iomem *con_reg,
enum pll45xx_type type)
{
struct samsung_clk_pll45xx *pll;
struct clk *clk;
struct clk_init_data init;
pll = kzalloc(sizeof(*pll), GFP_KERNEL);
if (!pll) {
pr_err("%s: could not allocate pll clk %s\n", __func__, name);
return NULL;
}
init.name = name;
init.ops = &samsung_pll45xx_clk_ops;
init.flags = CLK_GET_RATE_NOCACHE;
init.parent_names = &pname;
init.num_parents = 1;
pll->hw.init = &init;
pll->con_reg = con_reg;
pll->type = type;
clk = clk_register(NULL, &pll->hw);
if (IS_ERR(clk)) {
pr_err("%s: failed to register pll clock %s\n", __func__,
name);
kfree(pll);
}
if (clk_register_clkdev(clk, name, NULL))
pr_err("%s: failed to register lookup for %s", __func__, name);
return clk;
}
/*
* PLL46xx Clock Type
*/
#define PLL46XX_MDIV_MASK (0x1FF)
#define PLL46XX_PDIV_MASK (0x3F)
#define PLL46XX_SDIV_MASK (0x7)
#define PLL46XX_MDIV_SHIFT (16)
#define PLL46XX_PDIV_SHIFT (8)
#define PLL46XX_SDIV_SHIFT (0)
#define PLL46XX_KDIV_MASK (0xFFFF)
#define PLL4650C_KDIV_MASK (0xFFF)
#define PLL46XX_KDIV_SHIFT (0)
struct samsung_clk_pll46xx {
struct clk_hw hw;
enum pll46xx_type type;
const void __iomem *con_reg;
};
#define to_clk_pll46xx(_hw) container_of(_hw, struct samsung_clk_pll46xx, hw)
static unsigned long samsung_pll46xx_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct samsung_clk_pll46xx *pll = to_clk_pll46xx(hw);
u32 mdiv, pdiv, sdiv, kdiv, pll_con0, pll_con1, shift;
u64 fvco = parent_rate;
pll_con0 = __raw_readl(pll->con_reg);
pll_con1 = __raw_readl(pll->con_reg + 4);
mdiv = (pll_con0 >> PLL46XX_MDIV_SHIFT) & PLL46XX_MDIV_MASK;
pdiv = (pll_con0 >> PLL46XX_PDIV_SHIFT) & PLL46XX_PDIV_MASK;
sdiv = (pll_con0 >> PLL46XX_SDIV_SHIFT) & PLL46XX_SDIV_MASK;
kdiv = pll->type == pll_4650c ? pll_con1 & PLL4650C_KDIV_MASK :
pll_con1 & PLL46XX_KDIV_MASK;
shift = pll->type == pll_4600 ? 16 : 10;
fvco *= (mdiv << shift) + kdiv;
do_div(fvco, (pdiv << sdiv));
fvco >>= shift;
return (unsigned long)fvco;
}
static const struct clk_ops samsung_pll46xx_clk_ops = {
.recalc_rate = samsung_pll46xx_recalc_rate,
};
struct clk * __init samsung_clk_register_pll46xx(const char *name,
const char *pname, const void __iomem *con_reg,
enum pll46xx_type type)
{
struct samsung_clk_pll46xx *pll;
struct clk *clk;
struct clk_init_data init;
pll = kzalloc(sizeof(*pll), GFP_KERNEL);
if (!pll) {
pr_err("%s: could not allocate pll clk %s\n", __func__, name);
return NULL;
}
init.name = name;
init.ops = &samsung_pll46xx_clk_ops;
init.flags = CLK_GET_RATE_NOCACHE;
init.parent_names = &pname;
init.num_parents = 1;
pll->hw.init = &init;
pll->con_reg = con_reg;
pll->type = type;
clk = clk_register(NULL, &pll->hw);
if (IS_ERR(clk)) {
pr_err("%s: failed to register pll clock %s\n", __func__,
name);
kfree(pll);
}
if (clk_register_clkdev(clk, name, NULL))
pr_err("%s: failed to register lookup for %s", __func__, name);
return clk;
}
/*
* PLL2550x Clock Type
*/
#define PLL2550X_R_MASK (0x1)
#define PLL2550X_P_MASK (0x3F)
#define PLL2550X_M_MASK (0x3FF)
#define PLL2550X_S_MASK (0x7)
#define PLL2550X_R_SHIFT (20)
#define PLL2550X_P_SHIFT (14)
#define PLL2550X_M_SHIFT (4)
#define PLL2550X_S_SHIFT (0)
struct samsung_clk_pll2550x {
struct clk_hw hw;
const void __iomem *reg_base;
unsigned long offset;
};
#define to_clk_pll2550x(_hw) container_of(_hw, struct samsung_clk_pll2550x, hw)
static unsigned long samsung_pll2550x_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct samsung_clk_pll2550x *pll = to_clk_pll2550x(hw);
u32 r, p, m, s, pll_stat;
u64 fvco = parent_rate;
pll_stat = __raw_readl(pll->reg_base + pll->offset * 3);
r = (pll_stat >> PLL2550X_R_SHIFT) & PLL2550X_R_MASK;
if (!r)
return 0;
p = (pll_stat >> PLL2550X_P_SHIFT) & PLL2550X_P_MASK;
m = (pll_stat >> PLL2550X_M_SHIFT) & PLL2550X_M_MASK;
s = (pll_stat >> PLL2550X_S_SHIFT) & PLL2550X_S_MASK;
fvco *= m;
do_div(fvco, (p << s));
return (unsigned long)fvco;
}
static const struct clk_ops samsung_pll2550x_clk_ops = {
.recalc_rate = samsung_pll2550x_recalc_rate,
};
struct clk * __init samsung_clk_register_pll2550x(const char *name,
const char *pname, const void __iomem *reg_base,
const unsigned long offset)
{
struct samsung_clk_pll2550x *pll;
struct clk *clk;
struct clk_init_data init;
pll = kzalloc(sizeof(*pll), GFP_KERNEL);
if (!pll) {
pr_err("%s: could not allocate pll clk %s\n", __func__, name);
return NULL;
}
init.name = name;
init.ops = &samsung_pll2550x_clk_ops;
init.flags = CLK_GET_RATE_NOCACHE;
init.parent_names = &pname;
init.num_parents = 1;
pll->hw.init = &init;
pll->reg_base = reg_base;
pll->offset = offset;
clk = clk_register(NULL, &pll->hw);
if (IS_ERR(clk)) {
pr_err("%s: failed to register pll clock %s\n", __func__,
name);
kfree(pll);
}
if (clk_register_clkdev(clk, name, NULL))
pr_err("%s: failed to register lookup for %s", __func__, name);
return clk;
}

41
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/*
* Copyright (c) 2013 Samsung Electronics Co., Ltd.
* Copyright (c) 2013 Linaro Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Common Clock Framework support for all PLL's in Samsung platforms
*/
#ifndef __SAMSUNG_CLK_PLL_H
#define __SAMSUNG_CLK_PLL_H
enum pll45xx_type {
pll_4500,
pll_4502,
pll_4508
};
enum pll46xx_type {
pll_4600,
pll_4650,
pll_4650c,
};
extern struct clk * __init samsung_clk_register_pll35xx(const char *name,
const char *pname, const void __iomem *con_reg);
extern struct clk * __init samsung_clk_register_pll36xx(const char *name,
const char *pname, const void __iomem *con_reg);
extern struct clk * __init samsung_clk_register_pll45xx(const char *name,
const char *pname, const void __iomem *con_reg,
enum pll45xx_type type);
extern struct clk * __init samsung_clk_register_pll46xx(const char *name,
const char *pname, const void __iomem *con_reg,
enum pll46xx_type type);
extern struct clk * __init samsung_clk_register_pll2550x(const char *name,
const char *pname, const void __iomem *reg_base,
const unsigned long offset);
#endif /* __SAMSUNG_CLK_PLL_H */

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/*
* Copyright (c) 2013 Samsung Electronics Co., Ltd.
* Copyright (c) 2013 Linaro Ltd.
* Author: Thomas Abraham <thomas.ab@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This file includes utility functions to register clocks to common
* clock framework for Samsung platforms.
*/
#include <linux/syscore_ops.h>
#include "clk.h"
static DEFINE_SPINLOCK(lock);
static struct clk **clk_table;
static void __iomem *reg_base;
#ifdef CONFIG_OF
static struct clk_onecell_data clk_data;
#endif
#ifdef CONFIG_PM_SLEEP
static struct samsung_clk_reg_dump *reg_dump;
static unsigned long nr_reg_dump;
static int samsung_clk_suspend(void)
{
struct samsung_clk_reg_dump *rd = reg_dump;
unsigned long i;
for (i = 0; i < nr_reg_dump; i++, rd++)
rd->value = __raw_readl(reg_base + rd->offset);
return 0;
}
static void samsung_clk_resume(void)
{
struct samsung_clk_reg_dump *rd = reg_dump;
unsigned long i;
for (i = 0; i < nr_reg_dump; i++, rd++)
__raw_writel(rd->value, reg_base + rd->offset);
}
static struct syscore_ops samsung_clk_syscore_ops = {
.suspend = samsung_clk_suspend,
.resume = samsung_clk_resume,
};
#endif /* CONFIG_PM_SLEEP */
/* setup the essentials required to support clock lookup using ccf */
void __init samsung_clk_init(struct device_node *np, void __iomem *base,
unsigned long nr_clks, unsigned long *rdump,
unsigned long nr_rdump, unsigned long *soc_rdump,
unsigned long nr_soc_rdump)
{
reg_base = base;
#ifdef CONFIG_PM_SLEEP
if (rdump && nr_rdump) {
unsigned int idx;
reg_dump = kzalloc(sizeof(struct samsung_clk_reg_dump)
* (nr_rdump + nr_soc_rdump), GFP_KERNEL);
if (!reg_dump) {
pr_err("%s: memory alloc for register dump failed\n",
__func__);
return;
}
for (idx = 0; idx < nr_rdump; idx++)
reg_dump[idx].offset = rdump[idx];
for (idx = 0; idx < nr_soc_rdump; idx++)
reg_dump[nr_rdump + idx].offset = soc_rdump[idx];
nr_reg_dump = nr_rdump + nr_soc_rdump;
register_syscore_ops(&samsung_clk_syscore_ops);
}
#endif
clk_table = kzalloc(sizeof(struct clk *) * nr_clks, GFP_KERNEL);
if (!clk_table)
panic("could not allocate clock lookup table\n");
if (!np)
return;
#ifdef CONFIG_OF
clk_data.clks = clk_table;
clk_data.clk_num = nr_clks;
of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
#endif
}
/* add a clock instance to the clock lookup table used for dt based lookup */
void samsung_clk_add_lookup(struct clk *clk, unsigned int id)
{
if (clk_table && id)
clk_table[id] = clk;
}
/* register a list of aliases */
void __init samsung_clk_register_alias(struct samsung_clock_alias *list,
unsigned int nr_clk)
{
struct clk *clk;
unsigned int idx, ret;
if (!clk_table) {
pr_err("%s: clock table missing\n", __func__);
return;
}
for (idx = 0; idx < nr_clk; idx++, list++) {
if (!list->id) {
pr_err("%s: clock id missing for index %d\n", __func__,
idx);
continue;
}
clk = clk_table[list->id];
if (!clk) {
pr_err("%s: failed to find clock %d\n", __func__,
list->id);
continue;
}
ret = clk_register_clkdev(clk, list->alias, list->dev_name);
if (ret)
pr_err("%s: failed to register lookup %s\n",
__func__, list->alias);
}
}
/* register a list of fixed clocks */
void __init samsung_clk_register_fixed_rate(
struct samsung_fixed_rate_clock *list, unsigned int nr_clk)
{
struct clk *clk;
unsigned int idx, ret;
for (idx = 0; idx < nr_clk; idx++, list++) {
clk = clk_register_fixed_rate(NULL, list->name,
list->parent_name, list->flags, list->fixed_rate);
if (IS_ERR(clk)) {
pr_err("%s: failed to register clock %s\n", __func__,
list->name);
continue;
}
samsung_clk_add_lookup(clk, list->id);
/*
* Unconditionally add a clock lookup for the fixed rate clocks.
* There are not many of these on any of Samsung platforms.
*/
ret = clk_register_clkdev(clk, list->name, NULL);
if (ret)
pr_err("%s: failed to register clock lookup for %s",
__func__, list->name);
}
}
/* register a list of fixed factor clocks */
void __init samsung_clk_register_fixed_factor(
struct samsung_fixed_factor_clock *list, unsigned int nr_clk)
{
struct clk *clk;
unsigned int idx;
for (idx = 0; idx < nr_clk; idx++, list++) {
clk = clk_register_fixed_factor(NULL, list->name,
list->parent_name, list->flags, list->mult, list->div);
if (IS_ERR(clk)) {
pr_err("%s: failed to register clock %s\n", __func__,
list->name);
continue;
}
samsung_clk_add_lookup(clk, list->id);
}
}
/* register a list of mux clocks */
void __init samsung_clk_register_mux(struct samsung_mux_clock *list,
unsigned int nr_clk)
{
struct clk *clk;
unsigned int idx, ret;
for (idx = 0; idx < nr_clk; idx++, list++) {
clk = clk_register_mux(NULL, list->name, list->parent_names,
list->num_parents, list->flags, reg_base + list->offset,
list->shift, list->width, list->mux_flags, &lock);
if (IS_ERR(clk)) {
pr_err("%s: failed to register clock %s\n", __func__,
list->name);
continue;
}
samsung_clk_add_lookup(clk, list->id);
/* register a clock lookup only if a clock alias is specified */
if (list->alias) {
ret = clk_register_clkdev(clk, list->alias,
list->dev_name);
if (ret)
pr_err("%s: failed to register lookup %s\n",
__func__, list->alias);
}
}
}
/* register a list of div clocks */
void __init samsung_clk_register_div(struct samsung_div_clock *list,
unsigned int nr_clk)
{
struct clk *clk;
unsigned int idx, ret;
for (idx = 0; idx < nr_clk; idx++, list++) {
if (list->table)
clk = clk_register_divider_table(NULL, list->name,
list->parent_name, list->flags,
reg_base + list->offset, list->shift,
list->width, list->div_flags,
list->table, &lock);
else
clk = clk_register_divider(NULL, list->name,
list->parent_name, list->flags,
reg_base + list->offset, list->shift,
list->width, list->div_flags, &lock);
if (IS_ERR(clk)) {
pr_err("%s: failed to register clock %s\n", __func__,
list->name);
continue;
}
samsung_clk_add_lookup(clk, list->id);
/* register a clock lookup only if a clock alias is specified */
if (list->alias) {
ret = clk_register_clkdev(clk, list->alias,
list->dev_name);
if (ret)
pr_err("%s: failed to register lookup %s\n",
__func__, list->alias);
}
}
}
/* register a list of gate clocks */
void __init samsung_clk_register_gate(struct samsung_gate_clock *list,
unsigned int nr_clk)
{
struct clk *clk;
unsigned int idx, ret;
for (idx = 0; idx < nr_clk; idx++, list++) {
clk = clk_register_gate(NULL, list->name, list->parent_name,
list->flags, reg_base + list->offset,
list->bit_idx, list->gate_flags, &lock);
if (IS_ERR(clk)) {
pr_err("%s: failed to register clock %s\n", __func__,
list->name);
continue;
}
/* register a clock lookup only if a clock alias is specified */
if (list->alias) {
ret = clk_register_clkdev(clk, list->alias,
list->dev_name);
if (ret)
pr_err("%s: failed to register lookup %s\n",
__func__, list->alias);
}
samsung_clk_add_lookup(clk, list->id);
}
}
/*
* obtain the clock speed of all external fixed clock sources from device
* tree and register it
*/
#ifdef CONFIG_OF
void __init samsung_clk_of_register_fixed_ext(
struct samsung_fixed_rate_clock *fixed_rate_clk,
unsigned int nr_fixed_rate_clk,
struct of_device_id *clk_matches)
{
const struct of_device_id *match;
struct device_node *np;
u32 freq;
for_each_matching_node_and_match(np, clk_matches, &match) {
if (of_property_read_u32(np, "clock-frequency", &freq))
continue;
fixed_rate_clk[(u32)match->data].fixed_rate = freq;
}
samsung_clk_register_fixed_rate(fixed_rate_clk, nr_fixed_rate_clk);
}
#endif
/* utility function to get the rate of a specified clock */
unsigned long _get_rate(const char *clk_name)
{
struct clk *clk;
unsigned long rate;
clk = clk_get(NULL, clk_name);
if (IS_ERR(clk)) {
pr_err("%s: could not find clock %s\n", __func__, clk_name);
return 0;
}
rate = clk_get_rate(clk);
clk_put(clk);
return rate;
}

287
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/*
* Copyright (c) 2013 Samsung Electronics Co., Ltd.
* Copyright (c) 2013 Linaro Ltd.
* Author: Thomas Abraham <thomas.ab@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Common Clock Framework support for all Samsung platforms
*/
#ifndef __SAMSUNG_CLK_H
#define __SAMSUNG_CLK_H
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/io.h>
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_address.h>
/**
* struct samsung_clock_alias: information about mux clock
* @id: platform specific id of the clock.
* @dev_name: name of the device to which this clock belongs.
* @alias: optional clock alias name to be assigned to this clock.
*/
struct samsung_clock_alias {
unsigned int id;
const char *dev_name;
const char *alias;
};
#define ALIAS(_id, dname, a) \
{ \
.id = _id, \
.dev_name = dname, \
.alias = a, \
}
/**
* struct samsung_fixed_rate_clock: information about fixed-rate clock
* @id: platform specific id of the clock.
* @name: name of this fixed-rate clock.
* @parent_name: optional parent clock name.
* @flags: optional fixed-rate clock flags.
* @fixed-rate: fixed clock rate of this clock.
*/
struct samsung_fixed_rate_clock {
unsigned int id;
char *name;
const char *parent_name;
unsigned long flags;
unsigned long fixed_rate;
};
#define FRATE(_id, cname, pname, f, frate) \
{ \
.id = _id, \
.name = cname, \
.parent_name = pname, \
.flags = f, \
.fixed_rate = frate, \
}
/*
* struct samsung_fixed_factor_clock: information about fixed-factor clock
* @id: platform specific id of the clock.
* @name: name of this fixed-factor clock.
* @parent_name: parent clock name.
* @mult: fixed multiplication factor.
* @div: fixed division factor.
* @flags: optional fixed-factor clock flags.
*/
struct samsung_fixed_factor_clock {
unsigned int id;
char *name;
const char *parent_name;
unsigned long mult;
unsigned long div;
unsigned long flags;
};
#define FFACTOR(_id, cname, pname, m, d, f) \
{ \
.id = _id, \
.name = cname, \
.parent_name = pname, \
.mult = m, \
.div = d, \
.flags = f, \
}
/**
* struct samsung_mux_clock: information about mux clock
* @id: platform specific id of the clock.
* @dev_name: name of the device to which this clock belongs.
* @name: name of this mux clock.
* @parent_names: array of pointer to parent clock names.
* @num_parents: number of parents listed in @parent_names.
* @flags: optional flags for basic clock.
* @offset: offset of the register for configuring the mux.
* @shift: starting bit location of the mux control bit-field in @reg.
* @width: width of the mux control bit-field in @reg.
* @mux_flags: flags for mux-type clock.
* @alias: optional clock alias name to be assigned to this clock.
*/
struct samsung_mux_clock {
unsigned int id;
const char *dev_name;
const char *name;
const char **parent_names;
u8 num_parents;
unsigned long flags;
unsigned long offset;
u8 shift;
u8 width;
u8 mux_flags;
const char *alias;
};
#define __MUX(_id, dname, cname, pnames, o, s, w, f, mf, a) \
{ \
.id = _id, \
.dev_name = dname, \
.name = cname, \
.parent_names = pnames, \
.num_parents = ARRAY_SIZE(pnames), \
.flags = f, \
.offset = o, \
.shift = s, \
.width = w, \
.mux_flags = mf, \
.alias = a, \
}
#define MUX(_id, cname, pnames, o, s, w) \
__MUX(_id, NULL, cname, pnames, o, s, w, 0, 0, NULL)
#define MUX_A(_id, cname, pnames, o, s, w, a) \
__MUX(_id, NULL, cname, pnames, o, s, w, 0, 0, a)
#define MUX_F(_id, cname, pnames, o, s, w, f, mf) \
__MUX(_id, NULL, cname, pnames, o, s, w, f, mf, NULL)
/**
* @id: platform specific id of the clock.
* struct samsung_div_clock: information about div clock
* @dev_name: name of the device to which this clock belongs.
* @name: name of this div clock.
* @parent_name: name of the parent clock.
* @flags: optional flags for basic clock.
* @offset: offset of the register for configuring the div.
* @shift: starting bit location of the div control bit-field in @reg.
* @div_flags: flags for div-type clock.
* @alias: optional clock alias name to be assigned to this clock.
*/
struct samsung_div_clock {
unsigned int id;
const char *dev_name;
const char *name;
const char *parent_name;
unsigned long flags;
unsigned long offset;
u8 shift;
u8 width;
u8 div_flags;
const char *alias;
struct clk_div_table *table;
};
#define __DIV(_id, dname, cname, pname, o, s, w, f, df, a, t) \
{ \
.id = _id, \
.dev_name = dname, \
.name = cname, \
.parent_name = pname, \
.flags = f, \
.offset = o, \
.shift = s, \
.width = w, \
.div_flags = df, \
.alias = a, \
.table = t, \
}
#define DIV(_id, cname, pname, o, s, w) \
__DIV(_id, NULL, cname, pname, o, s, w, 0, 0, NULL, NULL)
#define DIV_A(_id, cname, pname, o, s, w, a) \
__DIV(_id, NULL, cname, pname, o, s, w, 0, 0, a, NULL)
#define DIV_F(_id, cname, pname, o, s, w, f, df) \
__DIV(_id, NULL, cname, pname, o, s, w, f, df, NULL, NULL)
#define DIV_T(_id, cname, pname, o, s, w, t) \
__DIV(_id, NULL, cname, pname, o, s, w, 0, 0, NULL, t)
/**
* struct samsung_gate_clock: information about gate clock
* @id: platform specific id of the clock.
* @dev_name: name of the device to which this clock belongs.
* @name: name of this gate clock.
* @parent_name: name of the parent clock.
* @flags: optional flags for basic clock.
* @offset: offset of the register for configuring the gate.
* @bit_idx: bit index of the gate control bit-field in @reg.
* @gate_flags: flags for gate-type clock.
* @alias: optional clock alias name to be assigned to this clock.
*/
struct samsung_gate_clock {
unsigned int id;
const char *dev_name;
const char *name;
const char *parent_name;
unsigned long flags;
unsigned long offset;
u8 bit_idx;
u8 gate_flags;
const char *alias;
};
#define __GATE(_id, dname, cname, pname, o, b, f, gf, a) \
{ \
.id = _id, \
.dev_name = dname, \
.name = cname, \
.parent_name = pname, \
.flags = f, \
.offset = o, \
.bit_idx = b, \
.gate_flags = gf, \
.alias = a, \
}
#define GATE(_id, cname, pname, o, b, f, gf) \
__GATE(_id, NULL, cname, pname, o, b, f, gf, NULL)
#define GATE_A(_id, cname, pname, o, b, f, gf, a) \
__GATE(_id, NULL, cname, pname, o, b, f, gf, a)
#define GATE_D(_id, dname, cname, pname, o, b, f, gf) \
__GATE(_id, dname, cname, pname, o, b, f, gf, NULL)
#define GATE_DA(_id, dname, cname, pname, o, b, f, gf, a) \
__GATE(_id, dname, cname, pname, o, b, f, gf, a)
#define PNAME(x) static const char *x[] __initdata
/**
* struct samsung_clk_reg_dump: register dump of clock controller registers.
* @offset: clock register offset from the controller base address.
* @value: the value to be register at offset.
*/
struct samsung_clk_reg_dump {
u32 offset;
u32 value;
};
extern void __init samsung_clk_init(struct device_node *np, void __iomem *base,
unsigned long nr_clks, unsigned long *rdump,
unsigned long nr_rdump, unsigned long *soc_rdump,
unsigned long nr_soc_rdump);
extern void __init samsung_clk_of_register_fixed_ext(
struct samsung_fixed_rate_clock *fixed_rate_clk,
unsigned int nr_fixed_rate_clk,
struct of_device_id *clk_matches);
extern void samsung_clk_add_lookup(struct clk *clk, unsigned int id);
extern void samsung_clk_register_alias(struct samsung_clock_alias *list,
unsigned int nr_clk);
extern void __init samsung_clk_register_fixed_rate(
struct samsung_fixed_rate_clock *clk_list, unsigned int nr_clk);
extern void __init samsung_clk_register_fixed_factor(
struct samsung_fixed_factor_clock *list, unsigned int nr_clk);
extern void __init samsung_clk_register_mux(struct samsung_mux_clock *clk_list,
unsigned int nr_clk);
extern void __init samsung_clk_register_div(struct samsung_div_clock *clk_list,
unsigned int nr_clk);
extern void __init samsung_clk_register_gate(
struct samsung_gate_clock *clk_list, unsigned int nr_clk);
extern unsigned long _get_rate(const char *clk_name);
#endif /* __SAMSUNG_CLK_H */