From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: From: =?UTF-8?q?Alexander=20M=C3=BCller?= To: mturquette@baylibre.com, linux-clk@vger.kernel.org, linux-amlogic@lists.infradead.org Subject: [PATCH 1/7] clk: meson: Rename meson8b-clkc.c to reflect gxbb naming convention Date: Tue, 5 Jul 2016 19:56:25 +0200 Message-Id: <1467741391-60534-2-git-send-email-serveralex@gmail.com> In-Reply-To: <1467741391-60534-1-git-send-email-serveralex@gmail.com> References: <1467741391-60534-1-git-send-email-serveralex@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 List-ID: Signed-off-by: Alexander Müller --- drivers/clk/meson/Makefile | 2 +- drivers/clk/meson/meson8b-clkc.c | 458 --------------------------------------- drivers/clk/meson/meson8b.c | 458 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 459 insertions(+), 459 deletions(-) delete mode 100644 drivers/clk/meson/meson8b-clkc.c create mode 100644 drivers/clk/meson/meson8b.c diff --git a/drivers/clk/meson/Makefile b/drivers/clk/meson/Makefile index 197e401..1a66799 100644 --- a/drivers/clk/meson/Makefile +++ b/drivers/clk/meson/Makefile @@ -3,5 +3,5 @@ # obj-$(CONFIG_COMMON_CLK_AMLOGIC) += clk-pll.o clk-cpu.o clk-mpll.o -obj-$(CONFIG_COMMON_CLK_MESON8B) += meson8b-clkc.o +obj-$(CONFIG_COMMON_CLK_MESON8B) += meson8b.o obj-$(CONFIG_COMMON_CLK_GXBB) += gxbb.o diff --git a/drivers/clk/meson/meson8b-clkc.c b/drivers/clk/meson/meson8b-clkc.c deleted file mode 100644 index b1902e9..0000000 --- a/drivers/clk/meson/meson8b-clkc.c +++ /dev/null @@ -1,458 +0,0 @@ -/* - * Copyright (c) 2015 Endless Mobile, Inc. - * Author: Carlo Caione - * - * Copyright (c) 2016 BayLibre, Inc. - * Michael Turquette - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see . - */ - -#include -#include -#include -#include -#include -#include - -#include "clkc.h" - -/* - * Clock controller register offsets - * - * Register offsets from the HardKernel[0] data sheet are listed in comment - * blocks below. Those offsets must be multiplied by 4 before adding them to - * the base address to get the right value - * - * [0] http://dn.odroid.com/S805/Datasheet/S805_Datasheet%20V0.8%2020150126.pdf - */ -#define MESON8B_REG_SYS_CPU_CNTL1 0x015c /* 0x57 offset in data sheet */ -#define MESON8B_REG_HHI_MPEG 0x0174 /* 0x5d offset in data sheet */ -#define MESON8B_REG_MALI 0x01b0 /* 0x6c offset in data sheet */ -#define MESON8B_REG_PLL_FIXED 0x0280 -#define MESON8B_REG_PLL_SYS 0x0300 -#define MESON8B_REG_PLL_VID 0x0320 - -static DEFINE_SPINLOCK(clk_lock); - -static const struct pll_rate_table sys_pll_rate_table[] = { - PLL_RATE(312000000, 52, 1, 2), - PLL_RATE(336000000, 56, 1, 2), - PLL_RATE(360000000, 60, 1, 2), - PLL_RATE(384000000, 64, 1, 2), - PLL_RATE(408000000, 68, 1, 2), - PLL_RATE(432000000, 72, 1, 2), - PLL_RATE(456000000, 76, 1, 2), - PLL_RATE(480000000, 80, 1, 2), - PLL_RATE(504000000, 84, 1, 2), - PLL_RATE(528000000, 88, 1, 2), - PLL_RATE(552000000, 92, 1, 2), - PLL_RATE(576000000, 96, 1, 2), - PLL_RATE(600000000, 50, 1, 1), - PLL_RATE(624000000, 52, 1, 1), - PLL_RATE(648000000, 54, 1, 1), - PLL_RATE(672000000, 56, 1, 1), - PLL_RATE(696000000, 58, 1, 1), - PLL_RATE(720000000, 60, 1, 1), - PLL_RATE(744000000, 62, 1, 1), - PLL_RATE(768000000, 64, 1, 1), - PLL_RATE(792000000, 66, 1, 1), - PLL_RATE(816000000, 68, 1, 1), - PLL_RATE(840000000, 70, 1, 1), - PLL_RATE(864000000, 72, 1, 1), - PLL_RATE(888000000, 74, 1, 1), - PLL_RATE(912000000, 76, 1, 1), - PLL_RATE(936000000, 78, 1, 1), - PLL_RATE(960000000, 80, 1, 1), - PLL_RATE(984000000, 82, 1, 1), - PLL_RATE(1008000000, 84, 1, 1), - PLL_RATE(1032000000, 86, 1, 1), - PLL_RATE(1056000000, 88, 1, 1), - PLL_RATE(1080000000, 90, 1, 1), - PLL_RATE(1104000000, 92, 1, 1), - PLL_RATE(1128000000, 94, 1, 1), - PLL_RATE(1152000000, 96, 1, 1), - PLL_RATE(1176000000, 98, 1, 1), - PLL_RATE(1200000000, 50, 1, 0), - PLL_RATE(1224000000, 51, 1, 0), - PLL_RATE(1248000000, 52, 1, 0), - PLL_RATE(1272000000, 53, 1, 0), - PLL_RATE(1296000000, 54, 1, 0), - PLL_RATE(1320000000, 55, 1, 0), - PLL_RATE(1344000000, 56, 1, 0), - PLL_RATE(1368000000, 57, 1, 0), - PLL_RATE(1392000000, 58, 1, 0), - PLL_RATE(1416000000, 59, 1, 0), - PLL_RATE(1440000000, 60, 1, 0), - PLL_RATE(1464000000, 61, 1, 0), - PLL_RATE(1488000000, 62, 1, 0), - PLL_RATE(1512000000, 63, 1, 0), - PLL_RATE(1536000000, 64, 1, 0), - { /* sentinel */ }, -}; - -static const struct clk_div_table cpu_div_table[] = { - { .val = 1, .div = 1 }, - { .val = 2, .div = 2 }, - { .val = 3, .div = 3 }, - { .val = 2, .div = 4 }, - { .val = 3, .div = 6 }, - { .val = 4, .div = 8 }, - { .val = 5, .div = 10 }, - { .val = 6, .div = 12 }, - { .val = 7, .div = 14 }, - { .val = 8, .div = 16 }, - { /* sentinel */ }, -}; - -static struct clk_fixed_rate meson8b_xtal = { - .fixed_rate = 24000000, - .hw.init = &(struct clk_init_data){ - .name = "xtal", - .num_parents = 0, - .ops = &clk_fixed_rate_ops, - }, -}; - -static struct meson_clk_pll meson8b_fixed_pll = { - .m = { - .reg_off = MESON8B_REG_PLL_FIXED, - .shift = 0, - .width = 9, - }, - .n = { - .reg_off = MESON8B_REG_PLL_FIXED, - .shift = 9, - .width = 5, - }, - .od = { - .reg_off = MESON8B_REG_PLL_FIXED, - .shift = 16, - .width = 2, - }, - .lock = &clk_lock, - .hw.init = &(struct clk_init_data){ - .name = "fixed_pll", - .ops = &meson_clk_pll_ro_ops, - .parent_names = (const char *[]){ "xtal" }, - .num_parents = 1, - .flags = CLK_GET_RATE_NOCACHE, - }, -}; - -static struct meson_clk_pll meson8b_vid_pll = { - .m = { - .reg_off = MESON8B_REG_PLL_VID, - .shift = 0, - .width = 9, - }, - .n = { - .reg_off = MESON8B_REG_PLL_VID, - .shift = 9, - .width = 5, - }, - .od = { - .reg_off = MESON8B_REG_PLL_VID, - .shift = 16, - .width = 2, - }, - .lock = &clk_lock, - .hw.init = &(struct clk_init_data){ - .name = "vid_pll", - .ops = &meson_clk_pll_ro_ops, - .parent_names = (const char *[]){ "xtal" }, - .num_parents = 1, - .flags = CLK_GET_RATE_NOCACHE, - }, -}; - -static struct meson_clk_pll meson8b_sys_pll = { - .m = { - .reg_off = MESON8B_REG_PLL_SYS, - .shift = 0, - .width = 9, - }, - .n = { - .reg_off = MESON8B_REG_PLL_SYS, - .shift = 9, - .width = 5, - }, - .od = { - .reg_off = MESON8B_REG_PLL_SYS, - .shift = 16, - .width = 2, - }, - .rate_table = sys_pll_rate_table, - .rate_count = ARRAY_SIZE(sys_pll_rate_table), - .lock = &clk_lock, - .hw.init = &(struct clk_init_data){ - .name = "sys_pll", - .ops = &meson_clk_pll_ops, - .parent_names = (const char *[]){ "xtal" }, - .num_parents = 1, - .flags = CLK_GET_RATE_NOCACHE, - }, -}; - -static struct clk_fixed_factor meson8b_fclk_div2 = { - .mult = 1, - .div = 2, - .hw.init = &(struct clk_init_data){ - .name = "fclk_div2", - .ops = &clk_fixed_factor_ops, - .parent_names = (const char *[]){ "fixed_pll" }, - .num_parents = 1, - }, -}; - -static struct clk_fixed_factor meson8b_fclk_div3 = { - .mult = 1, - .div = 3, - .hw.init = &(struct clk_init_data){ - .name = "fclk_div3", - .ops = &clk_fixed_factor_ops, - .parent_names = (const char *[]){ "fixed_pll" }, - .num_parents = 1, - }, -}; - -static struct clk_fixed_factor meson8b_fclk_div4 = { - .mult = 1, - .div = 4, - .hw.init = &(struct clk_init_data){ - .name = "fclk_div4", - .ops = &clk_fixed_factor_ops, - .parent_names = (const char *[]){ "fixed_pll" }, - .num_parents = 1, - }, -}; - -static struct clk_fixed_factor meson8b_fclk_div5 = { - .mult = 1, - .div = 5, - .hw.init = &(struct clk_init_data){ - .name = "fclk_div5", - .ops = &clk_fixed_factor_ops, - .parent_names = (const char *[]){ "fixed_pll" }, - .num_parents = 1, - }, -}; - -static struct clk_fixed_factor meson8b_fclk_div7 = { - .mult = 1, - .div = 7, - .hw.init = &(struct clk_init_data){ - .name = "fclk_div7", - .ops = &clk_fixed_factor_ops, - .parent_names = (const char *[]){ "fixed_pll" }, - .num_parents = 1, - }, -}; - -/* - * FIXME cpu clocks and the legacy composite clocks (e.g. clk81) are both PLL - * post-dividers and should be modeled with their respective PLLs via the - * forthcoming coordinated clock rates feature - */ -static struct meson_clk_cpu meson8b_cpu_clk = { - .reg_off = MESON8B_REG_SYS_CPU_CNTL1, - .div_table = cpu_div_table, - .clk_nb.notifier_call = meson_clk_cpu_notifier_cb, - .hw.init = &(struct clk_init_data){ - .name = "cpu_clk", - .ops = &meson_clk_cpu_ops, - .parent_names = (const char *[]){ "sys_pll" }, - .num_parents = 1, - }, -}; - -static u32 mux_table_clk81[] = { 6, 5, 7 }; - -struct clk_mux meson8b_mpeg_clk_sel = { - .reg = (void *)MESON8B_REG_HHI_MPEG, - .mask = 0x7, - .shift = 12, - .flags = CLK_MUX_READ_ONLY, - .table = mux_table_clk81, - .lock = &clk_lock, - .hw.init = &(struct clk_init_data){ - .name = "mpeg_clk_sel", - .ops = &clk_mux_ro_ops, - /* - * FIXME bits 14:12 selects from 8 possible parents: - * xtal, 1'b0 (wtf), fclk_div7, mpll_clkout1, mpll_clkout2, - * fclk_div4, fclk_div3, fclk_div5 - */ - .parent_names = (const char *[]){ "fclk_div3", "fclk_div4", - "fclk_div5" }, - .num_parents = 3, - .flags = (CLK_SET_RATE_NO_REPARENT | CLK_IGNORE_UNUSED), - }, -}; - -struct clk_divider meson8b_mpeg_clk_div = { - .reg = (void *)MESON8B_REG_HHI_MPEG, - .shift = 0, - .width = 7, - .lock = &clk_lock, - .hw.init = &(struct clk_init_data){ - .name = "mpeg_clk_div", - .ops = &clk_divider_ops, - .parent_names = (const char *[]){ "mpeg_clk_sel" }, - .num_parents = 1, - .flags = (CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED), - }, -}; - -struct clk_gate meson8b_clk81 = { - .reg = (void *)MESON8B_REG_HHI_MPEG, - .bit_idx = 7, - .lock = &clk_lock, - .hw.init = &(struct clk_init_data){ - .name = "clk81", - .ops = &clk_gate_ops, - .parent_names = (const char *[]){ "mpeg_clk_div" }, - .num_parents = 1, - .flags = (CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED), - }, -}; - -static struct clk_hw_onecell_data meson8b_hw_onecell_data = { - .hws = { - [CLKID_XTAL] = &meson8b_xtal.hw, - [CLKID_PLL_FIXED] = &meson8b_fixed_pll.hw, - [CLKID_PLL_VID] = &meson8b_vid_pll.hw, - [CLKID_PLL_SYS] = &meson8b_sys_pll.hw, - [CLKID_FCLK_DIV2] = &meson8b_fclk_div2.hw, - [CLKID_FCLK_DIV3] = &meson8b_fclk_div3.hw, - [CLKID_FCLK_DIV4] = &meson8b_fclk_div4.hw, - [CLKID_FCLK_DIV5] = &meson8b_fclk_div5.hw, - [CLKID_FCLK_DIV7] = &meson8b_fclk_div7.hw, - [CLKID_CPUCLK] = &meson8b_cpu_clk.hw, - [CLKID_MPEG_SEL] = &meson8b_mpeg_clk_sel.hw, - [CLKID_MPEG_DIV] = &meson8b_mpeg_clk_div.hw, - [CLKID_CLK81] = &meson8b_clk81.hw, - }, - .num = CLK_NR_CLKS, -}; - -static struct meson_clk_pll *const meson8b_clk_plls[] = { - &meson8b_fixed_pll, - &meson8b_vid_pll, - &meson8b_sys_pll, -}; - -static int meson8b_clkc_probe(struct platform_device *pdev) -{ - void __iomem *clk_base; - int ret, clkid, i; - struct clk_hw *parent_hw; - struct clk *parent_clk; - struct device *dev = &pdev->dev; - - /* Generic clocks and PLLs */ - clk_base = of_iomap(dev->of_node, 1); - if (!clk_base) { - pr_err("%s: Unable to map clk base\n", __func__); - return -ENXIO; - } - - /* Populate base address for PLLs */ - for (i = 0; i < ARRAY_SIZE(meson8b_clk_plls); i++) - meson8b_clk_plls[i]->base = clk_base; - - /* Populate the base address for CPU clk */ - meson8b_cpu_clk.base = clk_base; - - /* Populate the base address for the MPEG clks */ - meson8b_mpeg_clk_sel.reg = clk_base + (u32)meson8b_mpeg_clk_sel.reg; - meson8b_mpeg_clk_div.reg = clk_base + (u32)meson8b_mpeg_clk_div.reg; - meson8b_clk81.reg = clk_base + (u32)meson8b_clk81.reg; - - /* - * register all clks - * CLKID_UNUSED = 0, so skip it and start with CLKID_XTAL = 1 - */ - for (clkid = CLKID_XTAL; clkid < CLK_NR_CLKS; clkid++) { - /* array might be sparse */ - if (!meson8b_hw_onecell_data.hws[clkid]) - continue; - - /* FIXME convert to devm_clk_register */ - ret = devm_clk_hw_register(dev, meson8b_hw_onecell_data.hws[clkid]); - if (ret) - goto iounmap; - } - - /* - * Register CPU clk notifier - * - * FIXME this is wrong for a lot of reasons. First, the muxes should be - * struct clk_hw objects. Second, we shouldn't program the muxes in - * notifier handlers. The tricky programming sequence will be handled - * by the forthcoming coordinated clock rates mechanism once that - * feature is released. - * - * Furthermore, looking up the parent this way is terrible. At some - * point we will stop allocating a default struct clk when registering - * a new clk_hw, and this hack will no longer work. Releasing the ccr - * feature before that time solves the problem :-) - */ - parent_hw = clk_hw_get_parent(&meson8b_cpu_clk.hw); - parent_clk = parent_hw->clk; - ret = clk_notifier_register(parent_clk, &meson8b_cpu_clk.clk_nb); - if (ret) { - pr_err("%s: failed to register clock notifier for cpu_clk\n", - __func__); - goto iounmap; - } - - return of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get, - &meson8b_hw_onecell_data); - -iounmap: - iounmap(clk_base); - return ret; -} - -static const struct of_device_id meson8b_clkc_match_table[] = { - { .compatible = "amlogic,meson8b-clkc" }, - { } -}; -MODULE_DEVICE_TABLE(of, meson8b_match_table); - -static struct platform_driver meson8b_driver = { - .probe = meson8b_clkc_probe, - .driver = { - .name = "meson8b-clkc", - .of_match_table = meson8b_clkc_match_table, - }, -}; - -static int __init meson8b_clkc_init(void) -{ - return platform_driver_register(&meson8b_driver); -} -module_init(meson8b_clkc_init); - -static void __exit meson8b_clkc_exit(void) -{ - platform_driver_unregister(&meson8b_driver); -} -module_exit(meson8b_clkc_exit); - -MODULE_DESCRIPTION("AmLogic S805 / Meson8b Clock Controller Driver"); -MODULE_LICENSE("GPL v2"); -MODULE_ALIAS("platform:meson8b-clkc"); -MODULE_AUTHOR("Michael Turquette "); -MODULE_AUTHOR("Carlo Caione "); diff --git a/drivers/clk/meson/meson8b.c b/drivers/clk/meson/meson8b.c new file mode 100644 index 0000000..b1902e9 --- /dev/null +++ b/drivers/clk/meson/meson8b.c @@ -0,0 +1,458 @@ +/* + * Copyright (c) 2015 Endless Mobile, Inc. + * Author: Carlo Caione + * + * Copyright (c) 2016 BayLibre, Inc. + * Michael Turquette + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +#include +#include +#include +#include +#include +#include + +#include "clkc.h" + +/* + * Clock controller register offsets + * + * Register offsets from the HardKernel[0] data sheet are listed in comment + * blocks below. Those offsets must be multiplied by 4 before adding them to + * the base address to get the right value + * + * [0] http://dn.odroid.com/S805/Datasheet/S805_Datasheet%20V0.8%2020150126.pdf + */ +#define MESON8B_REG_SYS_CPU_CNTL1 0x015c /* 0x57 offset in data sheet */ +#define MESON8B_REG_HHI_MPEG 0x0174 /* 0x5d offset in data sheet */ +#define MESON8B_REG_MALI 0x01b0 /* 0x6c offset in data sheet */ +#define MESON8B_REG_PLL_FIXED 0x0280 +#define MESON8B_REG_PLL_SYS 0x0300 +#define MESON8B_REG_PLL_VID 0x0320 + +static DEFINE_SPINLOCK(clk_lock); + +static const struct pll_rate_table sys_pll_rate_table[] = { + PLL_RATE(312000000, 52, 1, 2), + PLL_RATE(336000000, 56, 1, 2), + PLL_RATE(360000000, 60, 1, 2), + PLL_RATE(384000000, 64, 1, 2), + PLL_RATE(408000000, 68, 1, 2), + PLL_RATE(432000000, 72, 1, 2), + PLL_RATE(456000000, 76, 1, 2), + PLL_RATE(480000000, 80, 1, 2), + PLL_RATE(504000000, 84, 1, 2), + PLL_RATE(528000000, 88, 1, 2), + PLL_RATE(552000000, 92, 1, 2), + PLL_RATE(576000000, 96, 1, 2), + PLL_RATE(600000000, 50, 1, 1), + PLL_RATE(624000000, 52, 1, 1), + PLL_RATE(648000000, 54, 1, 1), + PLL_RATE(672000000, 56, 1, 1), + PLL_RATE(696000000, 58, 1, 1), + PLL_RATE(720000000, 60, 1, 1), + PLL_RATE(744000000, 62, 1, 1), + PLL_RATE(768000000, 64, 1, 1), + PLL_RATE(792000000, 66, 1, 1), + PLL_RATE(816000000, 68, 1, 1), + PLL_RATE(840000000, 70, 1, 1), + PLL_RATE(864000000, 72, 1, 1), + PLL_RATE(888000000, 74, 1, 1), + PLL_RATE(912000000, 76, 1, 1), + PLL_RATE(936000000, 78, 1, 1), + PLL_RATE(960000000, 80, 1, 1), + PLL_RATE(984000000, 82, 1, 1), + PLL_RATE(1008000000, 84, 1, 1), + PLL_RATE(1032000000, 86, 1, 1), + PLL_RATE(1056000000, 88, 1, 1), + PLL_RATE(1080000000, 90, 1, 1), + PLL_RATE(1104000000, 92, 1, 1), + PLL_RATE(1128000000, 94, 1, 1), + PLL_RATE(1152000000, 96, 1, 1), + PLL_RATE(1176000000, 98, 1, 1), + PLL_RATE(1200000000, 50, 1, 0), + PLL_RATE(1224000000, 51, 1, 0), + PLL_RATE(1248000000, 52, 1, 0), + PLL_RATE(1272000000, 53, 1, 0), + PLL_RATE(1296000000, 54, 1, 0), + PLL_RATE(1320000000, 55, 1, 0), + PLL_RATE(1344000000, 56, 1, 0), + PLL_RATE(1368000000, 57, 1, 0), + PLL_RATE(1392000000, 58, 1, 0), + PLL_RATE(1416000000, 59, 1, 0), + PLL_RATE(1440000000, 60, 1, 0), + PLL_RATE(1464000000, 61, 1, 0), + PLL_RATE(1488000000, 62, 1, 0), + PLL_RATE(1512000000, 63, 1, 0), + PLL_RATE(1536000000, 64, 1, 0), + { /* sentinel */ }, +}; + +static const struct clk_div_table cpu_div_table[] = { + { .val = 1, .div = 1 }, + { .val = 2, .div = 2 }, + { .val = 3, .div = 3 }, + { .val = 2, .div = 4 }, + { .val = 3, .div = 6 }, + { .val = 4, .div = 8 }, + { .val = 5, .div = 10 }, + { .val = 6, .div = 12 }, + { .val = 7, .div = 14 }, + { .val = 8, .div = 16 }, + { /* sentinel */ }, +}; + +static struct clk_fixed_rate meson8b_xtal = { + .fixed_rate = 24000000, + .hw.init = &(struct clk_init_data){ + .name = "xtal", + .num_parents = 0, + .ops = &clk_fixed_rate_ops, + }, +}; + +static struct meson_clk_pll meson8b_fixed_pll = { + .m = { + .reg_off = MESON8B_REG_PLL_FIXED, + .shift = 0, + .width = 9, + }, + .n = { + .reg_off = MESON8B_REG_PLL_FIXED, + .shift = 9, + .width = 5, + }, + .od = { + .reg_off = MESON8B_REG_PLL_FIXED, + .shift = 16, + .width = 2, + }, + .lock = &clk_lock, + .hw.init = &(struct clk_init_data){ + .name = "fixed_pll", + .ops = &meson_clk_pll_ro_ops, + .parent_names = (const char *[]){ "xtal" }, + .num_parents = 1, + .flags = CLK_GET_RATE_NOCACHE, + }, +}; + +static struct meson_clk_pll meson8b_vid_pll = { + .m = { + .reg_off = MESON8B_REG_PLL_VID, + .shift = 0, + .width = 9, + }, + .n = { + .reg_off = MESON8B_REG_PLL_VID, + .shift = 9, + .width = 5, + }, + .od = { + .reg_off = MESON8B_REG_PLL_VID, + .shift = 16, + .width = 2, + }, + .lock = &clk_lock, + .hw.init = &(struct clk_init_data){ + .name = "vid_pll", + .ops = &meson_clk_pll_ro_ops, + .parent_names = (const char *[]){ "xtal" }, + .num_parents = 1, + .flags = CLK_GET_RATE_NOCACHE, + }, +}; + +static struct meson_clk_pll meson8b_sys_pll = { + .m = { + .reg_off = MESON8B_REG_PLL_SYS, + .shift = 0, + .width = 9, + }, + .n = { + .reg_off = MESON8B_REG_PLL_SYS, + .shift = 9, + .width = 5, + }, + .od = { + .reg_off = MESON8B_REG_PLL_SYS, + .shift = 16, + .width = 2, + }, + .rate_table = sys_pll_rate_table, + .rate_count = ARRAY_SIZE(sys_pll_rate_table), + .lock = &clk_lock, + .hw.init = &(struct clk_init_data){ + .name = "sys_pll", + .ops = &meson_clk_pll_ops, + .parent_names = (const char *[]){ "xtal" }, + .num_parents = 1, + .flags = CLK_GET_RATE_NOCACHE, + }, +}; + +static struct clk_fixed_factor meson8b_fclk_div2 = { + .mult = 1, + .div = 2, + .hw.init = &(struct clk_init_data){ + .name = "fclk_div2", + .ops = &clk_fixed_factor_ops, + .parent_names = (const char *[]){ "fixed_pll" }, + .num_parents = 1, + }, +}; + +static struct clk_fixed_factor meson8b_fclk_div3 = { + .mult = 1, + .div = 3, + .hw.init = &(struct clk_init_data){ + .name = "fclk_div3", + .ops = &clk_fixed_factor_ops, + .parent_names = (const char *[]){ "fixed_pll" }, + .num_parents = 1, + }, +}; + +static struct clk_fixed_factor meson8b_fclk_div4 = { + .mult = 1, + .div = 4, + .hw.init = &(struct clk_init_data){ + .name = "fclk_div4", + .ops = &clk_fixed_factor_ops, + .parent_names = (const char *[]){ "fixed_pll" }, + .num_parents = 1, + }, +}; + +static struct clk_fixed_factor meson8b_fclk_div5 = { + .mult = 1, + .div = 5, + .hw.init = &(struct clk_init_data){ + .name = "fclk_div5", + .ops = &clk_fixed_factor_ops, + .parent_names = (const char *[]){ "fixed_pll" }, + .num_parents = 1, + }, +}; + +static struct clk_fixed_factor meson8b_fclk_div7 = { + .mult = 1, + .div = 7, + .hw.init = &(struct clk_init_data){ + .name = "fclk_div7", + .ops = &clk_fixed_factor_ops, + .parent_names = (const char *[]){ "fixed_pll" }, + .num_parents = 1, + }, +}; + +/* + * FIXME cpu clocks and the legacy composite clocks (e.g. clk81) are both PLL + * post-dividers and should be modeled with their respective PLLs via the + * forthcoming coordinated clock rates feature + */ +static struct meson_clk_cpu meson8b_cpu_clk = { + .reg_off = MESON8B_REG_SYS_CPU_CNTL1, + .div_table = cpu_div_table, + .clk_nb.notifier_call = meson_clk_cpu_notifier_cb, + .hw.init = &(struct clk_init_data){ + .name = "cpu_clk", + .ops = &meson_clk_cpu_ops, + .parent_names = (const char *[]){ "sys_pll" }, + .num_parents = 1, + }, +}; + +static u32 mux_table_clk81[] = { 6, 5, 7 }; + +struct clk_mux meson8b_mpeg_clk_sel = { + .reg = (void *)MESON8B_REG_HHI_MPEG, + .mask = 0x7, + .shift = 12, + .flags = CLK_MUX_READ_ONLY, + .table = mux_table_clk81, + .lock = &clk_lock, + .hw.init = &(struct clk_init_data){ + .name = "mpeg_clk_sel", + .ops = &clk_mux_ro_ops, + /* + * FIXME bits 14:12 selects from 8 possible parents: + * xtal, 1'b0 (wtf), fclk_div7, mpll_clkout1, mpll_clkout2, + * fclk_div4, fclk_div3, fclk_div5 + */ + .parent_names = (const char *[]){ "fclk_div3", "fclk_div4", + "fclk_div5" }, + .num_parents = 3, + .flags = (CLK_SET_RATE_NO_REPARENT | CLK_IGNORE_UNUSED), + }, +}; + +struct clk_divider meson8b_mpeg_clk_div = { + .reg = (void *)MESON8B_REG_HHI_MPEG, + .shift = 0, + .width = 7, + .lock = &clk_lock, + .hw.init = &(struct clk_init_data){ + .name = "mpeg_clk_div", + .ops = &clk_divider_ops, + .parent_names = (const char *[]){ "mpeg_clk_sel" }, + .num_parents = 1, + .flags = (CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED), + }, +}; + +struct clk_gate meson8b_clk81 = { + .reg = (void *)MESON8B_REG_HHI_MPEG, + .bit_idx = 7, + .lock = &clk_lock, + .hw.init = &(struct clk_init_data){ + .name = "clk81", + .ops = &clk_gate_ops, + .parent_names = (const char *[]){ "mpeg_clk_div" }, + .num_parents = 1, + .flags = (CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED), + }, +}; + +static struct clk_hw_onecell_data meson8b_hw_onecell_data = { + .hws = { + [CLKID_XTAL] = &meson8b_xtal.hw, + [CLKID_PLL_FIXED] = &meson8b_fixed_pll.hw, + [CLKID_PLL_VID] = &meson8b_vid_pll.hw, + [CLKID_PLL_SYS] = &meson8b_sys_pll.hw, + [CLKID_FCLK_DIV2] = &meson8b_fclk_div2.hw, + [CLKID_FCLK_DIV3] = &meson8b_fclk_div3.hw, + [CLKID_FCLK_DIV4] = &meson8b_fclk_div4.hw, + [CLKID_FCLK_DIV5] = &meson8b_fclk_div5.hw, + [CLKID_FCLK_DIV7] = &meson8b_fclk_div7.hw, + [CLKID_CPUCLK] = &meson8b_cpu_clk.hw, + [CLKID_MPEG_SEL] = &meson8b_mpeg_clk_sel.hw, + [CLKID_MPEG_DIV] = &meson8b_mpeg_clk_div.hw, + [CLKID_CLK81] = &meson8b_clk81.hw, + }, + .num = CLK_NR_CLKS, +}; + +static struct meson_clk_pll *const meson8b_clk_plls[] = { + &meson8b_fixed_pll, + &meson8b_vid_pll, + &meson8b_sys_pll, +}; + +static int meson8b_clkc_probe(struct platform_device *pdev) +{ + void __iomem *clk_base; + int ret, clkid, i; + struct clk_hw *parent_hw; + struct clk *parent_clk; + struct device *dev = &pdev->dev; + + /* Generic clocks and PLLs */ + clk_base = of_iomap(dev->of_node, 1); + if (!clk_base) { + pr_err("%s: Unable to map clk base\n", __func__); + return -ENXIO; + } + + /* Populate base address for PLLs */ + for (i = 0; i < ARRAY_SIZE(meson8b_clk_plls); i++) + meson8b_clk_plls[i]->base = clk_base; + + /* Populate the base address for CPU clk */ + meson8b_cpu_clk.base = clk_base; + + /* Populate the base address for the MPEG clks */ + meson8b_mpeg_clk_sel.reg = clk_base + (u32)meson8b_mpeg_clk_sel.reg; + meson8b_mpeg_clk_div.reg = clk_base + (u32)meson8b_mpeg_clk_div.reg; + meson8b_clk81.reg = clk_base + (u32)meson8b_clk81.reg; + + /* + * register all clks + * CLKID_UNUSED = 0, so skip it and start with CLKID_XTAL = 1 + */ + for (clkid = CLKID_XTAL; clkid < CLK_NR_CLKS; clkid++) { + /* array might be sparse */ + if (!meson8b_hw_onecell_data.hws[clkid]) + continue; + + /* FIXME convert to devm_clk_register */ + ret = devm_clk_hw_register(dev, meson8b_hw_onecell_data.hws[clkid]); + if (ret) + goto iounmap; + } + + /* + * Register CPU clk notifier + * + * FIXME this is wrong for a lot of reasons. First, the muxes should be + * struct clk_hw objects. Second, we shouldn't program the muxes in + * notifier handlers. The tricky programming sequence will be handled + * by the forthcoming coordinated clock rates mechanism once that + * feature is released. + * + * Furthermore, looking up the parent this way is terrible. At some + * point we will stop allocating a default struct clk when registering + * a new clk_hw, and this hack will no longer work. Releasing the ccr + * feature before that time solves the problem :-) + */ + parent_hw = clk_hw_get_parent(&meson8b_cpu_clk.hw); + parent_clk = parent_hw->clk; + ret = clk_notifier_register(parent_clk, &meson8b_cpu_clk.clk_nb); + if (ret) { + pr_err("%s: failed to register clock notifier for cpu_clk\n", + __func__); + goto iounmap; + } + + return of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get, + &meson8b_hw_onecell_data); + +iounmap: + iounmap(clk_base); + return ret; +} + +static const struct of_device_id meson8b_clkc_match_table[] = { + { .compatible = "amlogic,meson8b-clkc" }, + { } +}; +MODULE_DEVICE_TABLE(of, meson8b_match_table); + +static struct platform_driver meson8b_driver = { + .probe = meson8b_clkc_probe, + .driver = { + .name = "meson8b-clkc", + .of_match_table = meson8b_clkc_match_table, + }, +}; + +static int __init meson8b_clkc_init(void) +{ + return platform_driver_register(&meson8b_driver); +} +module_init(meson8b_clkc_init); + +static void __exit meson8b_clkc_exit(void) +{ + platform_driver_unregister(&meson8b_driver); +} +module_exit(meson8b_clkc_exit); + +MODULE_DESCRIPTION("AmLogic S805 / Meson8b Clock Controller Driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:meson8b-clkc"); +MODULE_AUTHOR("Michael Turquette "); +MODULE_AUTHOR("Carlo Caione "); -- 2.5.0