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Message-ID: <CANMBJr4Jnuooogi7rhn2MRNKuRP9=9fr5NFUtEMg_1JNCg3sig@mail.gmail.com>
Date: Fri, 6 Feb 2015 10:10:23 -0800
From: Tyler Baker <tyler.baker@...aro.org>
To: Bintian Wang <bintian.wang@...wei.com>
Cc: linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will.deacon@....com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
Rob Herring <robh+dt@...nel.org>,
Paweł Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Kevin Hilman <khilman@...aro.org>,
Mike Turquette <mturquette@...aro.org>,
Rob Herring <rob.herring@...aro.org>,
Zhangfei Gao <zhangfei.gao@...aro.org>,
Haojian Zhuang <haojian.zhuang@...aro.org>,
Xu Wei <xuwei5@...ilicon.com>,
Jaehoon Chung <jh80.chung@...sung.com>,
Olof Johansson <olof@...om.net>,
Haifeng Yan <yanhaifeng@...il.com>,
Stephen Boyd <sboyd@...eaurora.org>, xuejiancheng@...wei.com,
sledge.yanwei@...wei.com,
Tomeu Vizoso <tomeu.vizoso@...labora.com>,
Russell King - ARM Linux <linux@....linux.org.uk>,
Guodong Xu <guodong.xu@...aro.org>, dan.zhao@...ilicon.com,
huxinwei@...wei.com, xuyiping@...ilicon.com,
victor.lixin@...ilicon.com, btw@...l.itp.ac.cn,
puck.chen@...ilicon.com, wangbinghui@...ilicon.com,
zhenwei.wang@...ilicon.com,
"Liguozhu (Kenneth)" <liguozhu@...ilicon.com>,
XinWei Kong <kong.kongxinwei@...ilicon.com>,
heyunlei@...wei.com, w.f@...wei.com, z.liuxinliang@...wei.com
Subject: Re: [PATCH 2/3] clk: hi6220: Clock driver support for Hisilicon
hi6220 SoC
Hi Bintian,
This patch applied to next-20150204 is producing build failures on
various ARM defconfigs[1]. I received the following error in all
cases:
drivers/built-in.o: In function `hi6220_clk_register_divider':
:(.init.text+0x1a84c): undefined reference to `hi6220_register_clkdiv'
Makefile:925: recipe for target 'vmlinux' failed
make: *** [vmlinux] Error 1
On 5 February 2015 at 01:24, Bintian Wang <bintian.wang@...wei.com> wrote:
> Add clock drivers for hi6220 SoC, this driver controls the SoC
> registers to supply different clocks to different IPs in the SoC.
>
> We add one divider clock for hi6220 because the divider in hi6220
> also has a mask bit but it doesnot obey the rule defined by flag
> "CLK_DIVIDER_HIWORD_MASK", we can not get index of the mask bit by
> left shift fixed bits (e.g. 16 bits), so we add this divider clock
> to handle it.
>
> This patch also enables this clock driver for ARCH_HISI and document
> devicetree bindings.
>
> Signed-off-by: Bintian Wang <bintian.wang@...wei.com>
> Reviewed-by: Haojian Zhuang <haojian.zhuang@...aro.org>
> Reviewed-by: Zhangfei Gao <zhangfei.gao@...aro.org>
> ---
> .../devicetree/bindings/clock/hi6220-clock.txt | 30 +++
> arch/arm64/Kconfig | 1 +
> drivers/clk/Kconfig | 2 +
> drivers/clk/Makefile | 4 +-
> drivers/clk/hisilicon/Kconfig | 5 +
> drivers/clk/hisilicon/Makefile | 1 +
> drivers/clk/hisilicon/clk-hi6220.c | 284 ++++++++++++++++++++
> drivers/clk/hisilicon/clk.c | 29 ++
> drivers/clk/hisilicon/clk.h | 17 ++
> drivers/clk/hisilicon/clkdivider-hi6220.c | 273 +++++++++++++++++++
> include/dt-bindings/clock/hi6220-clock.h | 172 ++++++++++++
> 11 files changed, 815 insertions(+), 3 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/clock/hi6220-clock.txt
> create mode 100644 drivers/clk/hisilicon/Kconfig
> create mode 100644 drivers/clk/hisilicon/clk-hi6220.c
> create mode 100644 drivers/clk/hisilicon/clkdivider-hi6220.c
> create mode 100644 include/dt-bindings/clock/hi6220-clock.h
>
> diff --git a/Documentation/devicetree/bindings/clock/hi6220-clock.txt b/Documentation/devicetree/bindings/clock/hi6220-clock.txt
> new file mode 100644
> index 0000000..a3ddda1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/hi6220-clock.txt
> @@ -0,0 +1,30 @@
> +* Hisilicon Hi6220 Clock Controller
> +
> +The hi6220 clock controller generates and supplies clock to various
> +controllers within the hi6220 SoC.
> +
> +Required Properties:
> +
> +- compatible: should be one of the following:
> + - "hisilicon,hi6220-clock-ao" - controller for those clocks under SoC
> + power always on(AO) domain, it is the sub node of SoC power AO
> + controller in dts file.
> + - "hisilicon,hi6220-clock-sys" - controller for those clocks under SoC
> + system control domain, it is the sub node of SoC system controller
> + in dts file.
> + - "hisilicon,hi6220-clock-media" - controller for those clocks under
> + SoC media control domain, it is the sub node of SoC media controller
> + in dts file.
> + - "hisilicon,hi6220-clock-power" - controller for those clocks under
> + SoC power control domain, it is the sub node of SoC power controller
> + in dts file.
> +
> +- reg: physical base address of the controller and length of memory mapped
> + region.
> +
> +- #clock-cells: should be 1.
> +
> +Each clock is assigned an identifier and client nodes use this identifier
> +to specify the clock which they consume.
> +
> +All these identifier could be found in <dt-bindings/clock/hi6220-clock.h>.
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 78cd41c8..6efc3e3 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -175,6 +175,7 @@ config ARCH_XGENE
>
> config ARCH_HISI
> bool "Hisilicon SoC Family"
> + select COMMON_CLK_HI6220
> help
> This enables support for Hisilicon ARMv8 Family of SoCs.
>
> diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
> index 3f44f29..b52c95c 100644
> --- a/drivers/clk/Kconfig
> +++ b/drivers/clk/Kconfig
> @@ -136,6 +136,8 @@ config COMMON_CLK_PXA
>
> source "drivers/clk/qcom/Kconfig"
>
> +source "drivers/clk/hisilicon/Kconfig"
> +
> endmenu
>
> source "drivers/clk/bcm/Kconfig"
> diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
> index d5fba5b..c58703b 100644
> --- a/drivers/clk/Makefile
> +++ b/drivers/clk/Makefile
> @@ -43,9 +43,7 @@ obj-$(CONFIG_COMMON_CLK_XGENE) += clk-xgene.o
> obj-$(CONFIG_COMMON_CLK_AT91) += at91/
> obj-$(CONFIG_ARCH_BCM_MOBILE) += bcm/
> obj-$(CONFIG_ARCH_BERLIN) += berlin/
> -obj-$(CONFIG_ARCH_HI3xxx) += hisilicon/
> -obj-$(CONFIG_ARCH_HIP04) += hisilicon/
> -obj-$(CONFIG_ARCH_HIX5HD2) += hisilicon/
> +obj-$(CONFIG_ARCH_HISI) += hisilicon/
> obj-$(CONFIG_COMMON_CLK_KEYSTONE) += keystone/
> ifeq ($(CONFIG_COMMON_CLK), y)
> obj-$(CONFIG_ARCH_MMP) += mmp/
> diff --git a/drivers/clk/hisilicon/Kconfig b/drivers/clk/hisilicon/Kconfig
> new file mode 100644
> index 0000000..e3ead46
> --- /dev/null
> +++ b/drivers/clk/hisilicon/Kconfig
> @@ -0,0 +1,5 @@
> +config COMMON_CLK_HI6220
> + tristate "Hi6220 Clock Driver"
> + depends on OF && ARCH_HISI
> + help
> + Build the Hisilicon Hi6220 clock driver based on the common clock framework.
> diff --git a/drivers/clk/hisilicon/Makefile b/drivers/clk/hisilicon/Makefile
> index 038c02f..bbf0539 100644
> --- a/drivers/clk/hisilicon/Makefile
> +++ b/drivers/clk/hisilicon/Makefile
> @@ -7,3 +7,4 @@ obj-y += clk.o clkgate-separated.o
> obj-$(CONFIG_ARCH_HI3xxx) += clk-hi3620.o
> obj-$(CONFIG_ARCH_HIP04) += clk-hip04.o
> obj-$(CONFIG_ARCH_HIX5HD2) += clk-hix5hd2.o
> +obj-$(CONFIG_COMMON_CLK_HI6220) += clkdivider-hi6220.o clk-hi6220.o
> diff --git a/drivers/clk/hisilicon/clk-hi6220.c b/drivers/clk/hisilicon/clk-hi6220.c
> new file mode 100644
> index 0000000..01d0c46
> --- /dev/null
> +++ b/drivers/clk/hisilicon/clk-hi6220.c
> @@ -0,0 +1,284 @@
> +/*
> + * Hisilicon Hi6220 clock driver
> + *
> + * Copyright (c) 2015 Hisilicon Limited.
> + *
> + * Author: Bintian Wang <bintian.wang@...wei.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.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/clk-provider.h>
> +#include <linux/clkdev.h>
> +#include <linux/io.h>
> +#include <linux/of.h>
> +#include <linux/of_address.h>
> +#include <linux/of_device.h>
> +#include <linux/slab.h>
> +#include <linux/clk.h>
> +
> +#include <dt-bindings/clock/hi6220-clock.h>
> +
> +#include "clk.h"
> +
> +
> +/* clocks in AO (always on) controller */
> +static struct hisi_fixed_rate_clock hi6220_fixed_rate_clks[] __initdata = {
> + { HI6220_REF32K, "ref32k", NULL, CLK_IS_ROOT, 32764, },
> + { HI6220_CLK_TCXO, "clk_tcxo", NULL, CLK_IS_ROOT, 19200000, },
> + { HI6220_MMC1_PAD, "mmc1_pad", NULL, CLK_IS_ROOT, 100000000, },
> + { HI6220_MMC2_PAD, "mmc2_pad", NULL, CLK_IS_ROOT, 100000000, },
> + { HI6220_MMC0_PAD, "mmc0_pad", NULL, CLK_IS_ROOT, 200000000, },
> + { HI6220_PLL_BBP, "bbppll0", NULL, CLK_IS_ROOT, 245760000, },
> + { HI6220_PLL_GPU, "gpupll", NULL, CLK_IS_ROOT, 1000000000,},
> + { HI6220_PLL1_DDR, "ddrpll1", NULL, CLK_IS_ROOT, 1066000000,},
> + { HI6220_PLL_SYS, "syspll", NULL, CLK_IS_ROOT, 1200000000,},
> + { HI6220_PLL_SYS_MEDIA, "media_syspll", NULL, CLK_IS_ROOT, 1200000000,},
> + { HI6220_DDR_SRC, "ddr_sel_src", NULL, CLK_IS_ROOT, 1200000000,},
> + { HI6220_PLL_MEDIA, "media_pll", NULL, CLK_IS_ROOT, 1440000000,},
> + { HI6220_PLL_DDR, "ddrpll0", NULL, CLK_IS_ROOT, 1600000000,},
> +};
> +
> +static struct hisi_fixed_factor_clock hi6220_fixed_factor_clks[] __initdata = {
> + { HI6220_300M, "clk_300m", "syspll", 1, 4, 0, },
> + { HI6220_150M, "clk_150m", "clk_300m", 1, 2, 0, },
> + { HI6220_PICOPHY_SRC, "picophy_src", "clk_150m", 1, 4, 0, },
> + { HI6220_MMC0_SRC_SEL, "mmc0srcsel", "mmc0_sel", 1, 8, 0, },
> + { HI6220_MMC1_SRC_SEL, "mmc1srcsel", "mmc1_sel", 1, 8, 0, },
> + { HI6220_MMC2_SRC_SEL, "mmc2srcsel", "mmc2_sel", 1, 8, 0, },
> + { HI6220_VPU_CODEC, "vpucodec", "codec_jpeg_aclk", 1, 2, 0, },
> + { HI6220_MMC0_SMP, "mmc0_sample", "mmc0_sel", 1, 8, 0, },
> + { HI6220_MMC1_SMP, "mmc1_sample", "mmc1_sel", 1, 8, 0, },
> + { HI6220_MMC2_SMP, "mmc2_sample", "mmc2_sel", 1, 8, 0, },
> +};
> +
> +static struct hisi_gate_clock hi6220_separated_gate_clks_ao[] __initdata = {
> + { HI6220_WDT0_PCLK, "wdt0_pclk", "clk_tcxo", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x630, 12, 0, },
> + { HI6220_WDT1_PCLK, "wdt1_pclk", "clk_tcxo", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x630, 13, 0, },
> + { HI6220_WDT2_PCLK, "wdt2_pclk", "clk_tcxo", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x630, 14, 0, },
> + { HI6220_TIMER0_PCLK, "timer0_pclk", "clk_tcxo", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x630, 15, 0, },
> + { HI6220_TIMER1_PCLK, "timer1_pclk", "clk_tcxo", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x630, 16, 0, },
> + { HI6220_TIMER2_PCLK, "timer2_pclk", "clk_tcxo", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x630, 17, 0, },
> + { HI6220_TIMER3_PCLK, "timer3_pclk", "clk_tcxo", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x630, 18, 0, },
> + { HI6220_TIMER4_PCLK, "timer4_pclk", "clk_tcxo", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x630, 19, 0, },
> + { HI6220_TIMER5_PCLK, "timer5_pclk", "clk_tcxo", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x630, 20, 0, },
> + { HI6220_TIMER6_PCLK, "timer6_pclk", "clk_tcxo", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x630, 21, 0, },
> + { HI6220_TIMER7_PCLK, "timer7_pclk", "clk_tcxo", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x630, 22, 0, },
> + { HI6220_TIMER8_PCLK, "timer8_pclk", "clk_tcxo", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x630, 23, 0, },
> + { HI6220_UART0_PCLK, "uart0_pclk", "clk_tcxo", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x630, 24, 0, },
> +};
> +
> +static void __init hi6220_clk_ao_init(struct device_node *np)
> +{
> + struct hisi_clock_data *clk_data;
> +
> + clk_data = hisi_clk_init(np, HI6220_AO_NR_CLKS);
> + if (!clk_data)
> + return;
> +
> + hisi_clk_register_fixed_rate(hi6220_fixed_rate_clks,
> + ARRAY_SIZE(hi6220_fixed_rate_clks), clk_data);
> +
> + hisi_clk_register_fixed_factor(hi6220_fixed_factor_clks,
> + ARRAY_SIZE(hi6220_fixed_factor_clks), clk_data);
> +
> + hisi_clk_register_gate_sep(hi6220_separated_gate_clks_ao,
> + ARRAY_SIZE(hi6220_separated_gate_clks_ao), clk_data);
> +}
> +CLK_OF_DECLARE(hi6220_clk_ao, "hisilicon,hi6220-clock-ao", hi6220_clk_ao_init);
> +
> +
> +/* clocks in sysctrl */
> +static const char *mmc0_mux0_p[] __initconst = { "pll_ddr_gate", "syspll", };
> +static const char *mmc0_mux1_p[] __initconst = { "mmc0_mux0", "pll_media_gate", };
> +static const char *mmc0_src_p[] __initconst = { "mmc0srcsel", "mmc0_div", };
> +static const char *mmc1_mux0_p[] __initconst = { "pll_ddr_gate", "syspll", };
> +static const char *mmc1_mux1_p[] __initconst = { "mmc1_mux0", "pll_media_gate", };
> +static const char *mmc1_src_p[] __initconst = { "mmc1srcsel", "mmc1_div", };
> +static const char *mmc2_mux0_p[] __initconst = { "pll_ddr_gate", "syspll", };
> +static const char *mmc2_mux1_p[] __initconst = { "mmc2_mux0", "pll_media_gate", };
> +static const char *mmc2_src_p[] __initconst = { "mmc2srcsel", "mmc2_div", };
> +static const char *mmc0_sample_in[] __initconst = { "mmc0_sample", "mmc0_pad", };
> +static const char *mmc1_sample_in[] __initconst = { "mmc1_sample", "mmc1_pad", };
> +static const char *mmc2_sample_in[] __initconst = { "mmc2_sample", "mmc2_pad", };
> +static const char *uart1_src[] __initconst = { "clk_tcxo", "clk_150m", };
> +static const char *uart2_src[] __initconst = { "clk_tcxo", "clk_150m", };
> +static const char *uart3_src[] __initconst = { "clk_tcxo", "clk_150m", };
> +static const char *uart4_src[] __initconst = { "clk_tcxo", "clk_150m", };
> +static const char *hifi_src[] __initconst = { "syspll", "pll_media_gate", };
> +
> +static struct hisi_gate_clock hi6220_separated_gate_clks_sys[] __initdata = {
> + { HI6220_MMC0_CLK, "mmc0_clk", "mmc0_src", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x200, 0, 0, },
> + { HI6220_MMC0_CIUCLK, "mmc0_ciuclk", "mmc0_smp_in", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x200, 0, 0, },
> + { HI6220_MMC1_CLK, "mmc1_clk", "mmc1_src", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x200, 1, 0, },
> + { HI6220_MMC1_CIUCLK, "mmc1_ciuclk", "mmc1_smp_in", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x200, 1, 0, },
> + { HI6220_MMC2_CLK, "mmc2_clk", "mmc2_src", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x200, 2, 0, },
> + { HI6220_MMC2_CIUCLK, "mmc2_ciuclk", "mmc2_smp_in", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x200, 2, 0, },
> + { HI6220_USBOTG_HCLK, "usbotg_hclk", "clk_bus", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x200, 4, 0, },
> + { HI6220_CLK_PICOPHY, "clk_picophy", "cs_dapb", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x200, 5, 0, },
> + { HI6220_HIFI, "hifi_clk", "hifi_div", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x210, 0, 0, },
> + { HI6220_DACODEC_PCLK, "dacodec_pclk", "clk_bus", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x210, 5, 0, },
> + { HI6220_EDMAC_ACLK, "edmac_aclk", "clk_bus", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x220, 2, 0, },
> + { HI6220_CS_ATB, "cs_atb", "cs_atb_div", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x230, 0, 0, },
> + { HI6220_I2C0_CLK, "i2c0_clk", "clk_150m", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x230, 1, 0, },
> + { HI6220_I2C1_CLK, "i2c1_clk", "clk_150m", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x230, 2, 0, },
> + { HI6220_I2C2_CLK, "i2c2_clk", "clk_150m", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x230, 3, 0, },
> + { HI6220_I2C3_CLK, "i2c3_clk", "clk_150m", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x230, 4, 0, },
> + { HI6220_UART1_PCLK, "uart1_pclk", "uart1_src", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x230, 5, 0, },
> + { HI6220_UART2_PCLK, "uart2_pclk", "uart2_src", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x230, 6, 0, },
> + { HI6220_UART3_PCLK, "uart3_pclk", "uart3_src", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x230, 7, 0, },
> + { HI6220_UART4_PCLK, "uart4_pclk", "uart4_src", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x230, 8, 0, },
> + { HI6220_SPI_CLK, "spi_clk", "clk_150m", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x230, 9, 0, },
> + { HI6220_MMU_CLK, "mmu_clk", "ddrc_axi1", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x240, 11, 0, },
> + { HI6220_HIFI_SEL, "hifi_sel", "hifi_src", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x270, 0, 0, },
> + { HI6220_MMC0_SYSPLL, "mmc0_syspll", "syspll", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x270, 1, 0, },
> + { HI6220_MMC1_SYSPLL, "mmc1_syspll", "syspll", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x270, 2, 0, },
> + { HI6220_MMC2_SYSPLL, "mmc2_syspll", "syspll", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x270, 3, 0, },
> + { HI6220_MMC0_SEL, "mmc0_sel", "mmc0_mux1", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x270, 6, 0, },
> + { HI6220_MMC1_SEL, "mmc1_sel", "mmc1_mux1", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x270, 7, 0, },
> + { HI6220_BBPPLL_SEL, "bbppll_sel", "pll0_bbp_gate", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x270, 9, 0, },
> + { HI6220_MEDIA_PLL_SRC, "media_pll_src", "pll_media_gate", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x270, 10, 0, },
> + { HI6220_MMC2_SEL, "mmc2_sel", "mmc2_mux1", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x270, 11, 0, },
> + { HI6220_CS_ATB_SYSPLL, "cs_atb_syspll", "syspll", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x270, 12, 0, },
> +};
> +
> +static struct hisi_mux_clock hi6220_mux_clks_sys[] __initdata = {
> + { HI6220_MMC0_SRC, "mmc0_src", mmc0_src_p, ARRAY_SIZE(mmc0_src_p), CLK_SET_RATE_PARENT, 0x4, 0, 1, 0, },
> + { HI6220_MMC0_SMP_IN, "mmc0_smp_in", mmc0_sample_in, ARRAY_SIZE(mmc0_sample_in), CLK_SET_RATE_PARENT, 0x4, 0, 1, 0, },
> + { HI6220_MMC1_SRC, "mmc1_src", mmc1_src_p, ARRAY_SIZE(mmc1_src_p), CLK_SET_RATE_PARENT, 0x4, 2, 1, 0, },
> + { HI6220_MMC1_SMP_IN, "mmc1_smp_in", mmc1_sample_in, ARRAY_SIZE(mmc1_sample_in), CLK_SET_RATE_PARENT, 0x4, 2, 1, 0, },
> + { HI6220_MMC2_SRC, "mmc2_src", mmc2_src_p, ARRAY_SIZE(mmc2_src_p), CLK_SET_RATE_PARENT, 0x4, 4, 1, 0, },
> + { HI6220_MMC2_SMP_IN, "mmc2_smp_in", mmc2_sample_in, ARRAY_SIZE(mmc2_sample_in), CLK_SET_RATE_PARENT, 0x4, 4, 1, 0, },
> + { HI6220_HIFI_SRC, "hifi_src", hifi_src, ARRAY_SIZE(hifi_src), CLK_SET_RATE_PARENT, 0x400, 0, 1, CLK_MUX_HIWORD_MASK,},
> + { HI6220_UART1_SRC, "uart1_src", uart1_src, ARRAY_SIZE(uart1_src), CLK_SET_RATE_PARENT, 0x400, 1, 1, CLK_MUX_HIWORD_MASK,},
> + { HI6220_UART2_SRC, "uart2_src", uart2_src, ARRAY_SIZE(uart2_src), CLK_SET_RATE_PARENT, 0x400, 2, 1, CLK_MUX_HIWORD_MASK,},
> + { HI6220_UART3_SRC, "uart3_src", uart3_src, ARRAY_SIZE(uart3_src), CLK_SET_RATE_PARENT, 0x400, 3, 1, CLK_MUX_HIWORD_MASK,},
> + { HI6220_UART4_SRC, "uart4_src", uart4_src, ARRAY_SIZE(uart4_src), CLK_SET_RATE_PARENT, 0x400, 4, 1, CLK_MUX_HIWORD_MASK,},
> + { HI6220_MMC0_MUX0, "mmc0_mux0", mmc0_mux0_p, ARRAY_SIZE(mmc0_mux0_p), CLK_SET_RATE_PARENT, 0x400, 5, 1, CLK_MUX_HIWORD_MASK,},
> + { HI6220_MMC1_MUX0, "mmc1_mux0", mmc1_mux0_p, ARRAY_SIZE(mmc1_mux0_p), CLK_SET_RATE_PARENT, 0x400, 11, 1, CLK_MUX_HIWORD_MASK,},
> + { HI6220_MMC2_MUX0, "mmc2_mux0", mmc2_mux0_p, ARRAY_SIZE(mmc2_mux0_p), CLK_SET_RATE_PARENT, 0x400, 12, 1, CLK_MUX_HIWORD_MASK,},
> + { HI6220_MMC0_MUX1, "mmc0_mux1", mmc0_mux1_p, ARRAY_SIZE(mmc0_mux1_p), CLK_SET_RATE_PARENT, 0x400, 13, 1, CLK_MUX_HIWORD_MASK,},
> + { HI6220_MMC1_MUX1, "mmc1_mux1", mmc1_mux1_p, ARRAY_SIZE(mmc1_mux1_p), CLK_SET_RATE_PARENT, 0x400, 14, 1, CLK_MUX_HIWORD_MASK,},
> + { HI6220_MMC2_MUX1, "mmc2_mux1", mmc2_mux1_p, ARRAY_SIZE(mmc2_mux1_p), CLK_SET_RATE_PARENT, 0x400, 15, 1, CLK_MUX_HIWORD_MASK,},
> +};
> +
> +static struct hi6220_divider_clock hi6220_div_clks_sys[] __initdata = {
> + { HI6220_CLK_BUS, "clk_bus", "clk_300m", CLK_SET_RATE_PARENT, 0x490, 0, 4, 7, },
> + { HI6220_MMC0_DIV, "mmc0_div", "mmc0_syspll", CLK_SET_RATE_PARENT, 0x494, 0, 6, 7, },
> + { HI6220_MMC1_DIV, "mmc1_div", "mmc1_syspll", CLK_SET_RATE_PARENT, 0x498, 0, 6, 7, },
> + { HI6220_MMC2_DIV, "mmc2_div", "mmc2_syspll", CLK_SET_RATE_PARENT, 0x49c, 0, 6, 7, },
> + { HI6220_HIFI_DIV, "hifi_div", "hifi_sel", CLK_SET_RATE_PARENT, 0x4a0, 0, 4, 7, },
> + { HI6220_BBPPLL0_DIV, "bbppll0_div", "bbppll_sel", CLK_SET_RATE_PARENT, 0x4a0, 8, 6, 15,},
> + { HI6220_CS_DAPB, "cs_dapb", "picophy_src", CLK_SET_RATE_PARENT, 0x4a0, 24, 2, 31,},
> + { HI6220_CS_ATB_DIV, "cs_atb_div", "cs_atb_syspll", CLK_SET_RATE_PARENT, 0x4a4, 0, 4, 7, },
> +};
> +
> +static void __init hi6220_clk_sys_init(struct device_node *np)
> +{
> + struct hisi_clock_data *clk_data;
> +
> + clk_data = hisi_clk_init(np, HI6220_SYS_NR_CLKS);
> + if (!clk_data)
> + return;
> +
> + hisi_clk_register_gate_sep(hi6220_separated_gate_clks_sys,
> + ARRAY_SIZE(hi6220_separated_gate_clks_sys), clk_data);
> +
> + hisi_clk_register_mux(hi6220_mux_clks_sys,
> + ARRAY_SIZE(hi6220_mux_clks_sys), clk_data);
> +
> + hi6220_clk_register_divider(hi6220_div_clks_sys,
> + ARRAY_SIZE(hi6220_div_clks_sys), clk_data);
> +}
> +CLK_OF_DECLARE(hi6220_clk_sys, "hisilicon,hi6220-clock-sys", hi6220_clk_sys_init);
> +
> +
> +/* clocks in media controller */
> +static const char *clk_1000_1200_src[] __initconst = { "pll_gpu_gate", "media_syspll_src", };
> +static const char *clk_1440_1200_src[] __initconst = { "media_syspll_src", "media_pll_src", };
> +static const char *clk_1000_1440_src[] __initconst = { "pll_gpu_gate", "media_pll_src", };
> +
> +static struct hisi_gate_clock hi6220_separated_gate_clks_media[] __initdata = {
> + { HI6220_DSI_PCLK, "dsi_pclk", "vpucodec", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x520, 0, 0, },
> + { HI6220_G3D_PCLK, "g3d_pclk", "vpucodec", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x520, 1, 0, },
> + { HI6220_ACLK_CODEC_VPU, "aclk_codec_vpu", "ade_core_src", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x520, 3, 0, },
> + { HI6220_ISP_SCLK, "isp_sclk", "isp_sclk_src", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x520, 5, 0, },
> + { HI6220_ADE_CORE, "ade_core", "ade_core_src", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x520, 6, 0, },
> + { HI6220_MED_MMU, "media_mmu", "mmu_clk", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x520, 8, 0, },
> + { HI6220_CFG_CSI4PHY, "cfg_csi4phy", "clk_tcxo", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x520, 9, 0, },
> + { HI6220_CFG_CSI2PHY, "cfg_csi2phy", "clk_tcxo", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x520, 10, 0, },
> + { HI6220_ISP_SCLK_GATE, "isp_sclk_gate", "media_pll_src", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x520, 11, 0, },
> + { HI6220_ISP_SCLK_GATE1, "isp_sclk_gate1", "media_pll_src", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x520, 12, 0, },
> + { HI6220_ADE_CORE_GATE, "ade_core_gate", "media_pll_src", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x520, 14, 0, },
> + { HI6220_CODEC_VPU_GATE, "codec_vpu_gate", "clk_1000_1440", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x520, 15, 0, },
> + { HI6220_MED_SYSPLL, "media_syspll_src", "media_syspll", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x520, 17, 0, },
> +};
> +
> +static struct hisi_mux_clock hi6220_mux_clks_media[] __initdata = {
> + { HI6220_1440_1200, "clk_1440_1200", clk_1440_1200_src, ARRAY_SIZE(clk_1440_1200_src), CLK_SET_RATE_PARENT, 0x51c, 0, 1, 0, },
> + { HI6220_1000_1200, "clk_1000_1200", clk_1000_1200_src, ARRAY_SIZE(clk_1000_1200_src), CLK_SET_RATE_PARENT, 0x51c, 1, 1, 0, },
> + { HI6220_1000_1440, "clk_1000_1440", clk_1000_1440_src, ARRAY_SIZE(clk_1000_1440_src), CLK_SET_RATE_PARENT, 0x51c, 6, 1, 0, },
> +};
> +
> +static struct hi6220_divider_clock hi6220_div_clks_media[] __initdata = {
> + { HI6220_CODEC_JPEG, "codec_jpeg_aclk", "media_pll_src", CLK_SET_RATE_PARENT, 0xcbc, 0, 4, 23, },
> + { HI6220_ISP_SCLK_SRC, "isp_sclk_src", "isp_sclk_gate", CLK_SET_RATE_PARENT, 0xcbc, 8, 4, 15, },
> + { HI6220_ISP_SCLK1, "isp_sclk1", "isp_sclk_gate1", CLK_SET_RATE_PARENT, 0xcbc, 24, 4, 31, },
> + { HI6220_ADE_CORE_SRC, "ade_core_src", "ade_core_gate", CLK_SET_RATE_PARENT, 0xcc0, 16, 3, 23, },
> + { HI6220_ADE_PIX_SRC, "ade_pix_src", "clk_1440_1200", CLK_SET_RATE_PARENT, 0xcc0, 24, 6, 31, },
> + { HI6220_G3D_CLK, "g3d_clk", "clk_1000_1200", CLK_SET_RATE_PARENT, 0xcc4, 8, 4, 15, },
> + { HI6220_CODEC_VPU_SRC, "codec_vpu_src", "codec_vpu_gate", CLK_SET_RATE_PARENT, 0xcc4, 24, 6, 31, },
> +};
> +
> +static void __init hi6220_clk_media_init(struct device_node *np)
> +{
> + struct hisi_clock_data *clk_data;
> +
> + clk_data = hisi_clk_init(np, HI6220_MEDIA_NR_CLKS);
> + if (!clk_data)
> + return;
> +
> + hisi_clk_register_gate_sep(hi6220_separated_gate_clks_media,
> + ARRAY_SIZE(hi6220_separated_gate_clks_media), clk_data);
> +
> + hisi_clk_register_mux(hi6220_mux_clks_media,
> + ARRAY_SIZE(hi6220_mux_clks_media), clk_data);
> +
> + hi6220_clk_register_divider(hi6220_div_clks_media,
> + ARRAY_SIZE(hi6220_div_clks_media), clk_data);
> +}
> +CLK_OF_DECLARE(hi6220_clk_media, "hisilicon,hi6220-clock-media", hi6220_clk_media_init);
> +
> +
> +/* clocks in pmctrl */
> +static struct hisi_gate_clock hi6220_gate_clks_power[] __initdata = {
> + { HI6220_PLL_GPU_GATE, "pll_gpu_gate", "gpupll", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x8, 0, 0, },
> + { HI6220_PLL1_DDR_GATE, "pll1_ddr_gate", "ddrpll1", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x10, 0, 0, },
> + { HI6220_PLL_DDR_GATE, "pll_ddr_gate", "ddrpll0", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x18, 0, 0, },
> + { HI6220_PLL_MEDIA_GATE, "pll_media_gate", "media_pll", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x38, 0, 0, },
> + { HI6220_PLL0_BBP_GATE, "pll0_bbp_gate", "bbppll0", CLK_SET_RATE_PARENT|CLK_IGNORE_UNUSED, 0x48, 0, 0, },
> +};
> +
> +static struct hi6220_divider_clock hi6220_div_clks_power[] __initdata = {
> + { HI6220_DDRC_SRC, "ddrc_src", "ddr_sel_src", CLK_SET_RATE_PARENT, 0x5a8, 0, 4, 0, },
> + { HI6220_DDRC_AXI1, "ddrc_axi1", "ddrc_src", CLK_SET_RATE_PARENT, 0x5a8, 8, 2, 0, },
> +};
> +
> +static void __init hi6220_clk_power_init(struct device_node *np)
> +{
> + struct hisi_clock_data *clk_data;
> +
> + clk_data = hisi_clk_init(np, HI6220_POWER_NR_CLKS);
> + if (!clk_data)
> + return;
> +
> + hisi_clk_register_gate(hi6220_gate_clks_power,
> + ARRAY_SIZE(hi6220_gate_clks_power), clk_data);
> +
> + hi6220_clk_register_divider(hi6220_div_clks_power,
> + ARRAY_SIZE(hi6220_div_clks_power), clk_data);
> +}
> +CLK_OF_DECLARE(hi6220_clk_power, "hisilicon,hi6220-clock-power", hi6220_clk_power_init);
> diff --git a/drivers/clk/hisilicon/clk.c b/drivers/clk/hisilicon/clk.c
> index a078e84..5d2305c 100644
> --- a/drivers/clk/hisilicon/clk.c
> +++ b/drivers/clk/hisilicon/clk.c
> @@ -232,3 +232,32 @@ void __init hisi_clk_register_gate_sep(struct hisi_gate_clock *clks,
> data->clk_data.clks[clks[i].id] = clk;
> }
> }
> +
> +void __init hi6220_clk_register_divider(struct hi6220_divider_clock *clks,
> + int nums, struct hisi_clock_data *data)
> +{
> + struct clk *clk;
> + void __iomem *base = data->base;
> + int i;
> +
> + for (i = 0; i < nums; i++) {
> + clk = hi6220_register_clkdiv(NULL, clks[i].name,
> + clks[i].parent_name,
> + clks[i].flags,
> + base + clks[i].offset,
> + clks[i].shift,
> + clks[i].width,
> + clks[i].mask_bit,
> + &hisi_clk_lock);
> + if (IS_ERR(clk)) {
> + pr_err("%s: failed to register clock %s\n",
> + __func__, clks[i].name);
> + continue;
> + }
> +
> + if (clks[i].alias)
> + clk_register_clkdev(clk, clks[i].alias, NULL);
> +
> + data->clk_data.clks[clks[i].id] = clk;
> + }
> +}
> diff --git a/drivers/clk/hisilicon/clk.h b/drivers/clk/hisilicon/clk.h
> index 31083ff..462a570 100644
> --- a/drivers/clk/hisilicon/clk.h
> +++ b/drivers/clk/hisilicon/clk.h
> @@ -79,6 +79,18 @@ struct hisi_divider_clock {
> const char *alias;
> };
>
> +struct hi6220_divider_clock {
> + unsigned int id;
> + const char *name;
> + const char *parent_name;
> + unsigned long flags;
> + unsigned long offset;
> + u8 shift;
> + u8 width;
> + u32 mask_bit;
> + const char *alias;
> +};
> +
> struct hisi_gate_clock {
> unsigned int id;
> const char *name;
> @@ -94,6 +106,9 @@ struct clk *hisi_register_clkgate_sep(struct device *, const char *,
> const char *, unsigned long,
> void __iomem *, u8,
> u8, spinlock_t *);
> +struct clk *hi6220_register_clkdiv(struct device *dev, const char *name,
> + const char *parent_name, unsigned long flags, void __iomem *reg,
> + u8 shift, u8 width, u32 mask_bit, spinlock_t *lock);
>
> struct hisi_clock_data __init *hisi_clk_init(struct device_node *, int);
> void __init hisi_clk_register_fixed_rate(struct hisi_fixed_rate_clock *,
> @@ -108,4 +123,6 @@ void __init hisi_clk_register_gate(struct hisi_gate_clock *,
> int, struct hisi_clock_data *);
> void __init hisi_clk_register_gate_sep(struct hisi_gate_clock *,
> int, struct hisi_clock_data *);
> +void __init hi6220_clk_register_divider(struct hi6220_divider_clock *,
> + int, struct hisi_clock_data *);
> #endif /* __HISI_CLK_H */
> diff --git a/drivers/clk/hisilicon/clkdivider-hi6220.c b/drivers/clk/hisilicon/clkdivider-hi6220.c
> new file mode 100644
> index 0000000..9e3825b
> --- /dev/null
> +++ b/drivers/clk/hisilicon/clkdivider-hi6220.c
> @@ -0,0 +1,273 @@
> +/*
> + * Hisilicon hi6220 SoC divider clock driver
> + *
> + * Copyright (c) 2015 Hisilicon Limited.
> + *
> + * Author: Bintian Wang <bintian.wang@...wei.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.
> + *
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/clk-provider.h>
> +#include <linux/slab.h>
> +#include <linux/io.h>
> +#include <linux/err.h>
> +
> +#define div_mask(width) ((1 << (width)) - 1)
> +
> +/*
> + * The reverse of DIV_ROUND_UP: The maximum number which
> + * divided by m is r
> + */
> +#define MULT_ROUND_UP(r, m) ((r) * (m) + (m) - 1)
> +
> +/**
> + * struct hi6220_clk_divider - divider clock for hi6220
> + *
> + * @hw: handle between common and hardware-specific interfaces
> + * @reg: register containing divider
> + * @shift: shift to the divider bit field
> + * @width: width of the divider bit field
> + * @mask: mask for setting divider rate
> + * @table: the div table that the divider supports
> + * @lock: register lock
> + */
> +struct hi6220_clk_divider {
> + struct clk_hw hw;
> + void __iomem *reg;
> + u8 shift;
> + u8 width;
> + u32 mask;
> + const struct clk_div_table *table;
> + spinlock_t *lock;
> +};
> +
> +#define to_hi6220_clk_divider(_hw) \
> + container_of(_hw, struct hi6220_clk_divider, hw)
> +
> +static unsigned int hi6220_get_table_maxdiv(const struct clk_div_table *table)
> +{
> + unsigned int maxdiv = 0;
> + const struct clk_div_table *clkt;
> +
> + for (clkt = table; clkt->div; clkt++)
> + if (clkt->div > maxdiv)
> + maxdiv = clkt->div;
> + return maxdiv;
> +}
> +
> +static unsigned int hi6220_get_table_div(const struct clk_div_table *table,
> + unsigned int val)
> +{
> + const struct clk_div_table *clkt;
> +
> + for (clkt = table; clkt->div; clkt++)
> + if (clkt->val == val)
> + return clkt->div;
> +
> + return 0;
> +}
> +
> +static unsigned int hi6220_get_table_val(const struct clk_div_table *table,
> + unsigned int div)
> +{
> + const struct clk_div_table *clkt;
> +
> + for (clkt = table; clkt->div; clkt++)
> + if (clkt->div == div)
> + return clkt->val;
> + return 0;
> +}
> +
> +static unsigned long hi6220_clkdiv_recalc_rate(struct clk_hw *hw,
> + unsigned long parent_rate)
> +{
> + unsigned int div, val;
> + struct hi6220_clk_divider *dclk = to_hi6220_clk_divider(hw);
> +
> + val = readl_relaxed(dclk->reg) >> dclk->shift;
> + val &= div_mask(dclk->width);
> +
> + div = hi6220_get_table_div(dclk->table, val);
> + if (!div) {
> + pr_warn("%s: Invalid divisor for clock %s\n", __func__,
> + __clk_get_name(hw->clk));
> + return parent_rate;
> + }
> +
> + return parent_rate / div;
> +}
> +
> +static bool hi6220_is_valid_div(const struct clk_div_table *table,
> + unsigned int div)
> +{
> + const struct clk_div_table *clkt;
> +
> + for (clkt = table; clkt->div; clkt++)
> + if (clkt->div == div)
> + return true;
> + return false;
> +}
> +
> +static int hi6220_clkdiv_bestdiv(struct clk_hw *hw, unsigned long rate,
> + unsigned long *best_parent_rate)
> +{
> + unsigned int i, bestdiv = 0;
> + unsigned long parent_rate, best = 0, now, maxdiv;
> +
> + struct hi6220_clk_divider *dclk = to_hi6220_clk_divider(hw);
> + struct clk *clk_parent = __clk_get_parent(hw->clk);
> +
> + maxdiv = hi6220_get_table_maxdiv(dclk->table);
> +
> + if (!(__clk_get_flags(hw->clk) & CLK_SET_RATE_PARENT)) {
> + parent_rate = *best_parent_rate;
> + bestdiv = DIV_ROUND_UP(parent_rate, rate);
> + bestdiv = (bestdiv == 0) ? 1 : bestdiv;
> + bestdiv = (bestdiv > maxdiv) ? maxdiv : bestdiv;
> + return bestdiv;
> + }
> +
> + /*
> + * The maximum divider we can use without overflowing
> + * unsigned long in rate * i below
> + */
> + maxdiv = min(ULONG_MAX / rate, maxdiv);
> +
> + for (i = 1; i <= maxdiv; i++) {
> + if (!hi6220_is_valid_div(dclk->table, i))
> + continue;
> + parent_rate = __clk_round_rate(clk_parent,
> + MULT_ROUND_UP(rate, i));
> + now = parent_rate / i;
> + if (now <= rate && now > best) {
> + bestdiv = i;
> + best = now;
> + *best_parent_rate = parent_rate;
> + }
> + }
> +
> + if (!bestdiv) {
> + bestdiv = hi6220_get_table_maxdiv(dclk->table);
> + *best_parent_rate = __clk_round_rate(clk_parent, 1);
> + }
> +
> + return bestdiv;
> +}
> +
> +static long hi6220_clkdiv_round_rate(struct clk_hw *hw, unsigned long rate,
> + unsigned long *prate)
> +{
> + int div;
> +
> + if (!rate)
> + rate = 1;
> +
> + div = hi6220_clkdiv_bestdiv(hw, rate, prate);
> +
> + return *prate / div;
> +}
> +
> +static int hi6220_clkdiv_set_rate(struct clk_hw *hw, unsigned long rate,
> + unsigned long parent_rate)
> +{
> + unsigned int div, value;
> + unsigned long flags = 0;
> + u32 data;
> + struct hi6220_clk_divider *dclk = to_hi6220_clk_divider(hw);
> +
> + div = parent_rate / rate;
> +
> + if (!hi6220_is_valid_div(dclk->table, div))
> + return -EINVAL;
> +
> + value = hi6220_get_table_val(dclk->table, div);
> +
> + if (value > div_mask(dclk->width))
> + value = div_mask(dclk->width);
> +
> + if (dclk->lock)
> + spin_lock_irqsave(dclk->lock, flags);
> +
> + data = readl_relaxed(dclk->reg);
> + data &= ~(div_mask(dclk->width) << dclk->shift);
> + data |= value << dclk->shift;
> + data |= dclk->mask;
> +
> + writel_relaxed(data, dclk->reg);
> +
> + if (dclk->lock)
> + spin_unlock_irqrestore(dclk->lock, flags);
> +
> + return 0;
> +}
> +
> +static struct clk_ops hi6220_clkdiv_ops = {
> + .recalc_rate = hi6220_clkdiv_recalc_rate,
> + .round_rate = hi6220_clkdiv_round_rate,
> + .set_rate = hi6220_clkdiv_set_rate,
> +};
> +
> +struct clk *hi6220_register_clkdiv(struct device *dev, const char *name,
> + const char *parent_name, unsigned long flags, void __iomem *reg,
> + u8 shift, u8 width, u32 mask_bit, spinlock_t *lock)
> +{
> + struct hi6220_clk_divider *div;
> + struct clk *clk;
> + struct clk_init_data init;
> + struct clk_div_table *table;
> + u32 max_div, min_div;
> + int i;
> +
> + /* allocate the divider */
> + div = kzalloc(sizeof(struct hi6220_clk_divider), GFP_KERNEL);
> + if (!div) {
> + pr_err("%s: could not allocate divider clk\n", __func__);
> + return ERR_PTR(-ENOMEM);
> + }
> +
> + /* Init the divider table */
> + max_div = div_mask(width) + 1;
> + min_div = 1;
> +
> + table = kzalloc(sizeof(struct clk_div_table) * (max_div + 1), GFP_KERNEL);
> + if (!table) {
> + kfree(div);
> + pr_err("%s: failed to alloc divider table!\n", __func__);
> + return ERR_PTR(-ENOMEM);
> + }
> +
> + for (i = 0; i < max_div; i++) {
> + table[i].div = min_div + i;
> + table[i].val = table[i].div - 1;
> + }
> +
> + init.name = name;
> + init.ops = &hi6220_clkdiv_ops;
> + init.flags = flags | CLK_IS_BASIC;
> + init.parent_names = parent_name ? &parent_name : NULL;
> + init.num_parents = parent_name ? 1 : 0;
> +
> + /* struct hi6220_clk_divider assignments */
> + div->reg = reg;
> + div->shift = shift;
> + div->width = width;
> + div->mask = mask_bit ? BIT(mask_bit) : 0;
> + div->lock = lock;
> + div->hw.init = &init;
> + div->table = table;
> +
> + /* register the clock */
> + clk = clk_register(dev, &div->hw);
> +
> + if (IS_ERR(clk)) {
> + kfree(table);
> + kfree(div);
> + }
> +
> + return clk;
> +}
> diff --git a/include/dt-bindings/clock/hi6220-clock.h b/include/dt-bindings/clock/hi6220-clock.h
> new file mode 100644
> index 0000000..05033e7
> --- /dev/null
> +++ b/include/dt-bindings/clock/hi6220-clock.h
> @@ -0,0 +1,172 @@
> +/*
> + * Copyright (c) 2015 Hisilicon Limited.
> + *
> + * Author: Bintian Wang <bintian.wang@...wei.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.
> + */
> +
> +#ifndef __DT_BINDINGS_CLOCK_HI6220_H
> +#define __DT_BINDINGS_CLOCK_HI6220_H
> +
> +/* clk in AO (always on) controller */
> +#define HI6220_NONE_CLOCK 0
> +
> +/* fixed rate clocks */
> +#define HI6220_REF32K 1
> +#define HI6220_CLK_TCXO 2
> +#define HI6220_MMC1_PAD 3
> +#define HI6220_MMC2_PAD 4
> +#define HI6220_MMC0_PAD 5
> +#define HI6220_PLL_BBP 6
> +#define HI6220_PLL_GPU 7
> +#define HI6220_PLL1_DDR 8
> +#define HI6220_PLL_SYS 9
> +#define HI6220_PLL_SYS_MEDIA 10
> +#define HI6220_DDR_SRC 11
> +#define HI6220_PLL_MEDIA 12
> +#define HI6220_PLL_DDR 13
> +
> +/* fixed factor clocks */
> +#define HI6220_300M 16
> +#define HI6220_150M 17
> +#define HI6220_PICOPHY_SRC 18
> +#define HI6220_MMC0_SRC_SEL 19
> +#define HI6220_MMC1_SRC_SEL 20
> +#define HI6220_MMC2_SRC_SEL 21
> +#define HI6220_VPU_CODEC 22
> +#define HI6220_MMC0_SMP 23
> +#define HI6220_MMC1_SMP 24
> +#define HI6220_MMC2_SMP 25
> +
> +/* gate clocks */
> +#define HI6220_WDT0_PCLK 28
> +#define HI6220_WDT1_PCLK 29
> +#define HI6220_WDT2_PCLK 30
> +#define HI6220_TIMER0_PCLK 31
> +#define HI6220_TIMER1_PCLK 32
> +#define HI6220_TIMER2_PCLK 33
> +#define HI6220_TIMER3_PCLK 34
> +#define HI6220_TIMER4_PCLK 35
> +#define HI6220_TIMER5_PCLK 36
> +#define HI6220_TIMER6_PCLK 37
> +#define HI6220_TIMER7_PCLK 38
> +#define HI6220_TIMER8_PCLK 39
> +#define HI6220_UART0_PCLK 40
> +
> +#define HI6220_AO_NR_CLKS 48
> +
> +/* clk in systrl */
> +/* gate clock */
> +#define HI6220_MMC0_CLK 1
> +#define HI6220_MMC0_CIUCLK 2
> +#define HI6220_MMC1_CLK 3
> +#define HI6220_MMC1_CIUCLK 4
> +#define HI6220_MMC2_CLK 5
> +#define HI6220_MMC2_CIUCLK 6
> +#define HI6220_USBOTG_HCLK 7
> +#define HI6220_CLK_PICOPHY 8
> +#define HI6220_HIFI 9
> +#define HI6220_DACODEC_PCLK 10
> +#define HI6220_EDMAC_ACLK 11
> +#define HI6220_CS_ATB 12
> +#define HI6220_I2C0_CLK 13
> +#define HI6220_I2C1_CLK 14
> +#define HI6220_I2C2_CLK 15
> +#define HI6220_I2C3_CLK 16
> +#define HI6220_UART1_PCLK 17
> +#define HI6220_UART2_PCLK 18
> +#define HI6220_UART3_PCLK 19
> +#define HI6220_UART4_PCLK 20
> +#define HI6220_SPI_CLK 21
> +#define HI6220_MMU_CLK 22
> +#define HI6220_HIFI_SEL 23
> +#define HI6220_MMC0_SYSPLL 24
> +#define HI6220_MMC1_SYSPLL 25
> +#define HI6220_MMC2_SYSPLL 26
> +#define HI6220_MMC0_SEL 27
> +#define HI6220_MMC1_SEL 28
> +#define HI6220_BBPPLL_SEL 29
> +#define HI6220_MEDIA_PLL_SRC 30
> +#define HI6220_MMC2_SEL 31
> +#define HI6220_CS_ATB_SYSPLL 32
> +
> +/* mux clocks */
> +#define HI6220_MMC0_SRC 35
> +#define HI6220_MMC0_SMP_IN 36
> +#define HI6220_MMC1_SRC 37
> +#define HI6220_MMC1_SMP_IN 38
> +#define HI6220_MMC2_SRC 39
> +#define HI6220_MMC2_SMP_IN 40
> +#define HI6220_HIFI_SRC 41
> +#define HI6220_UART1_SRC 42
> +#define HI6220_UART2_SRC 43
> +#define HI6220_UART3_SRC 44
> +#define HI6220_UART4_SRC 45
> +#define HI6220_MMC0_MUX0 46
> +#define HI6220_MMC1_MUX0 47
> +#define HI6220_MMC2_MUX0 48
> +#define HI6220_MMC0_MUX1 49
> +#define HI6220_MMC1_MUX1 50
> +#define HI6220_MMC2_MUX1 51
> +
> +/* divider clocks */
> +#define HI6220_CLK_BUS 54
> +#define HI6220_MMC0_DIV 55
> +#define HI6220_MMC1_DIV 56
> +#define HI6220_MMC2_DIV 57
> +#define HI6220_HIFI_DIV 58
> +#define HI6220_BBPPLL0_DIV 59
> +#define HI6220_CS_DAPB 60
> +#define HI6220_CS_ATB_DIV 61
> +
> +#define HI6220_SYS_NR_CLKS 64
> +
> +/* clk in media controller */
> +/* gate clocks */
> +#define HI6220_DSI_PCLK 1
> +#define HI6220_G3D_PCLK 2
> +#define HI6220_ACLK_CODEC_VPU 3
> +#define HI6220_ISP_SCLK 4
> +#define HI6220_ADE_CORE 5
> +#define HI6220_MED_MMU 6
> +#define HI6220_CFG_CSI4PHY 7
> +#define HI6220_CFG_CSI2PHY 8
> +#define HI6220_ISP_SCLK_GATE 9
> +#define HI6220_ISP_SCLK_GATE1 10
> +#define HI6220_ADE_CORE_GATE 11
> +#define HI6220_CODEC_VPU_GATE 12
> +#define HI6220_MED_SYSPLL 13
> +
> +/* mux clocks */
> +#define HI6220_1440_1200 20
> +#define HI6220_1000_1200 21
> +#define HI6220_1000_1440 22
> +
> +/* divider clocks */
> +#define HI6220_CODEC_JPEG 30
> +#define HI6220_ISP_SCLK_SRC 31
> +#define HI6220_ISP_SCLK1 32
> +#define HI6220_ADE_CORE_SRC 33
> +#define HI6220_ADE_PIX_SRC 34
> +#define HI6220_G3D_CLK 35
> +#define HI6220_CODEC_VPU_SRC 36
> +
> +#define HI6220_MEDIA_NR_CLKS 40
> +
> +/* clk in power controller */
> +/* gate clocks */
> +#define HI6220_PLL_GPU_GATE 1
> +#define HI6220_PLL1_DDR_GATE 2
> +#define HI6220_PLL_DDR_GATE 3
> +#define HI6220_PLL_MEDIA_GATE 4
> +#define HI6220_PLL0_BBP_GATE 5
> +
> +/* divider clocks */
> +#define HI6220_DDRC_SRC 10
> +#define HI6220_DDRC_AXI1 11
> +
> +#define HI6220_POWER_NR_CLKS 16
> +#endif
> --
> 1.7.9.5
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Cheers,
- Tyler
[1] http://kernelci.org/build/tbaker/kernel/v3.19-rc7-8241-g7b08f7b75c01/
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