/* linux/arch/arm/plat-s5pc1xx/s5pc100-clock.c * * Copyright 2009 Samsung Electronics, Co. * Byungho Min * * S5PC100 based common clock support * * Based on plat-s3c64xx/s3c6400-clock.c * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* fin_apll, fin_mpll and fin_epll are all the same clock, which we call * ext_xtal_mux for want of an actual name from the manual. */ static struct clk clk_ext_xtal_mux = { .name = "ext_xtal", .id = -1, }; #define clk_fin_apll clk_ext_xtal_mux #define clk_fin_mpll clk_ext_xtal_mux #define clk_fin_epll clk_ext_xtal_mux #define clk_fin_hpll clk_ext_xtal_mux #define clk_fout_mpll clk_mpll #define clk_vclk_54m clk_54m struct clk_sources { unsigned int nr_sources; struct clk **sources; }; struct clksrc_clk { struct clk clk; unsigned int mask; unsigned int shift; struct clk_sources *sources; unsigned int divider_shift; void __iomem *reg_divider; void __iomem *reg_source; }; /* APLL */ static struct clk clk_fout_apll = { .name = "fout_apll", .id = -1, .rate = 27000000, }; static struct clk *clk_src_apll_list[] = { [0] = &clk_fin_apll, [1] = &clk_fout_apll, }; static struct clk_sources clk_src_apll = { .sources = clk_src_apll_list, .nr_sources = ARRAY_SIZE(clk_src_apll_list), }; static struct clksrc_clk clk_mout_apll = { .clk = { .name = "mout_apll", .id = -1, }, .shift = S5PC100_CLKSRC0_APLL_SHIFT, .mask = S5PC100_CLKSRC0_APLL_MASK, .sources = &clk_src_apll, .reg_source = S5PC100_CLKSRC0, }; static unsigned long s5pc100_clk_dout_apll_get_rate(struct clk *clk) { unsigned long rate = clk_get_rate(clk->parent); unsigned int ratio; ratio = __raw_readl(S5PC100_CLKDIV0) & S5PC100_CLKDIV0_APLL_MASK; ratio >>= S5PC100_CLKDIV0_APLL_SHIFT; return rate / (ratio + 1); } static struct clk clk_dout_apll = { .name = "dout_apll", .id = -1, .parent = &clk_mout_apll.clk, .ops = &(struct clk_ops) { .get_rate = s5pc100_clk_dout_apll_get_rate, }, }; static unsigned long s5pc100_clk_arm_get_rate(struct clk *clk) { unsigned long rate = clk_get_rate(clk->parent); unsigned int ratio; ratio = __raw_readl(S5PC100_CLKDIV0) & S5PC100_CLKDIV0_ARM_MASK; ratio >>= S5PC100_CLKDIV0_ARM_SHIFT; return rate / (ratio + 1); } static unsigned long s5pc100_clk_arm_round_rate(struct clk *clk, unsigned long rate) { unsigned long parent = clk_get_rate(clk->parent); u32 div; if (parent < rate) return rate; div = (parent / rate) - 1; if (div > S5PC100_CLKDIV0_ARM_MASK) div = S5PC100_CLKDIV0_ARM_MASK; return parent / (div + 1); } static int s5pc100_clk_arm_set_rate(struct clk *clk, unsigned long rate) { unsigned long parent = clk_get_rate(clk->parent); u32 div; u32 val; if (rate < parent / (S5PC100_CLKDIV0_ARM_MASK + 1)) return -EINVAL; rate = clk_round_rate(clk, rate); div = clk_get_rate(clk->parent) / rate; val = __raw_readl(S5PC100_CLKDIV0); val &= S5PC100_CLKDIV0_ARM_MASK; val |= (div - 1); __raw_writel(val, S5PC100_CLKDIV0); return 0; } static struct clk clk_arm = { .name = "armclk", .id = -1, .parent = &clk_dout_apll, .ops = &(struct clk_ops) { .get_rate = s5pc100_clk_arm_get_rate, .set_rate = s5pc100_clk_arm_set_rate, .round_rate = s5pc100_clk_arm_round_rate, }, }; static unsigned long s5pc100_clk_dout_d0_bus_get_rate(struct clk *clk) { unsigned long rate = clk_get_rate(clk->parent); unsigned int ratio; ratio = __raw_readl(S5PC100_CLKDIV0) & S5PC100_CLKDIV0_D0_MASK; ratio >>= S5PC100_CLKDIV0_D0_SHIFT; return rate / (ratio + 1); } static struct clk clk_dout_d0_bus = { .name = "dout_d0_bus", .id = -1, .parent = &clk_arm, .ops = &(struct clk_ops) { .get_rate = s5pc100_clk_dout_d0_bus_get_rate, }, }; static unsigned long s5pc100_clk_dout_pclkd0_get_rate(struct clk *clk) { unsigned long rate = clk_get_rate(clk->parent); unsigned int ratio; ratio = __raw_readl(S5PC100_CLKDIV0) & S5PC100_CLKDIV0_PCLKD0_MASK; ratio >>= S5PC100_CLKDIV0_PCLKD0_SHIFT; return rate / (ratio + 1); } static struct clk clk_dout_pclkd0 = { .name = "dout_pclkd0", .id = -1, .parent = &clk_dout_d0_bus, .ops = &(struct clk_ops) { .get_rate = s5pc100_clk_dout_pclkd0_get_rate, }, }; static unsigned long s5pc100_clk_dout_apll2_get_rate(struct clk *clk) { unsigned long rate = clk_get_rate(clk->parent); unsigned int ratio; ratio = __raw_readl(S5PC100_CLKDIV1) & S5PC100_CLKDIV1_APLL2_MASK; ratio >>= S5PC100_CLKDIV1_APLL2_SHIFT; return rate / (ratio + 1); } static struct clk clk_dout_apll2 = { .name = "dout_apll2", .id = -1, .parent = &clk_mout_apll.clk, .ops = &(struct clk_ops) { .get_rate = s5pc100_clk_dout_apll2_get_rate, }, }; /* MPLL */ static struct clk *clk_src_mpll_list[] = { [0] = &clk_fin_mpll, [1] = &clk_fout_mpll, }; static struct clk_sources clk_src_mpll = { .sources = clk_src_mpll_list, .nr_sources = ARRAY_SIZE(clk_src_mpll_list), }; static struct clksrc_clk clk_mout_mpll = { .clk = { .name = "mout_mpll", .id = -1, }, .shift = S5PC100_CLKSRC0_MPLL_SHIFT, .mask = S5PC100_CLKSRC0_MPLL_MASK, .sources = &clk_src_mpll, .reg_source = S5PC100_CLKSRC0, }; static struct clk *clkset_am_list[] = { [0] = &clk_mout_mpll.clk, [1] = &clk_dout_apll2, }; static struct clk_sources clk_src_am = { .sources = clkset_am_list, .nr_sources = ARRAY_SIZE(clkset_am_list), }; static struct clksrc_clk clk_mout_am = { .clk = { .name = "mout_am", .id = -1, }, .shift = S5PC100_CLKSRC0_AMMUX_SHIFT, .mask = S5PC100_CLKSRC0_AMMUX_MASK, .sources = &clk_src_am, .reg_source = S5PC100_CLKSRC0, }; static unsigned long s5pc100_clk_dout_d1_bus_get_rate(struct clk *clk) { unsigned long rate = clk_get_rate(clk->parent); unsigned int ratio; printk(KERN_DEBUG "%s: parent is %ld\n", __func__, rate); ratio = __raw_readl(S5PC100_CLKDIV1) & S5PC100_CLKDIV1_D1_MASK; ratio >>= S5PC100_CLKDIV1_D1_SHIFT; return rate / (ratio + 1); } static struct clk clk_dout_d1_bus = { .name = "dout_d1_bus", .id = -1, .parent = &clk_mout_am.clk, .ops = &(struct clk_ops) { .get_rate = s5pc100_clk_dout_d1_bus_get_rate, }, }; static struct clk *clkset_onenand_list[] = { [0] = &clk_dout_d0_bus, [1] = &clk_dout_d1_bus, }; static struct clk_sources clk_src_onenand = { .sources = clkset_onenand_list, .nr_sources = ARRAY_SIZE(clkset_onenand_list), }; static struct clksrc_clk clk_mout_onenand = { .clk = { .name = "mout_onenand", .id = -1, }, .shift = S5PC100_CLKSRC0_ONENAND_SHIFT, .mask = S5PC100_CLKSRC0_ONENAND_MASK, .sources = &clk_src_onenand, .reg_source = S5PC100_CLKSRC0, }; static unsigned long s5pc100_clk_dout_pclkd1_get_rate(struct clk *clk) { unsigned long rate = clk_get_rate(clk->parent); unsigned int ratio; printk(KERN_DEBUG "%s: parent is %ld\n", __func__, rate); ratio = __raw_readl(S5PC100_CLKDIV1) & S5PC100_CLKDIV1_PCLKD1_MASK; ratio >>= S5PC100_CLKDIV1_PCLKD1_SHIFT; return rate / (ratio + 1); } static struct clk clk_dout_pclkd1 = { .name = "dout_pclkd1", .id = -1, .parent = &clk_dout_d1_bus, .ops = &(struct clk_ops) { .get_rate = s5pc100_clk_dout_pclkd1_get_rate, }, }; static unsigned long s5pc100_clk_dout_mpll2_get_rate(struct clk *clk) { unsigned long rate = clk_get_rate(clk->parent); unsigned int ratio; printk(KERN_DEBUG "%s: parent is %ld\n", __func__, rate); ratio = __raw_readl(S5PC100_CLKDIV1) & S5PC100_CLKDIV1_MPLL2_MASK; ratio >>= S5PC100_CLKDIV1_MPLL2_SHIFT; return rate / (ratio + 1); } static struct clk clk_dout_mpll2 = { .name = "dout_mpll2", .id = -1, .parent = &clk_mout_am.clk, .ops = &(struct clk_ops) { .get_rate = s5pc100_clk_dout_mpll2_get_rate, }, }; static unsigned long s5pc100_clk_dout_cam_get_rate(struct clk *clk) { unsigned long rate = clk_get_rate(clk->parent); unsigned int ratio; printk(KERN_DEBUG "%s: parent is %ld\n", __func__, rate); ratio = __raw_readl(S5PC100_CLKDIV1) & S5PC100_CLKDIV1_CAM_MASK; ratio >>= S5PC100_CLKDIV1_CAM_SHIFT; return rate / (ratio + 1); } static struct clk clk_dout_cam = { .name = "dout_cam", .id = -1, .parent = &clk_dout_mpll2, .ops = &(struct clk_ops) { .get_rate = s5pc100_clk_dout_cam_get_rate, }, }; static unsigned long s5pc100_clk_dout_mpll_get_rate(struct clk *clk) { unsigned long rate = clk_get_rate(clk->parent); unsigned int ratio; printk(KERN_DEBUG "%s: parent is %ld\n", __func__, rate); ratio = __raw_readl(S5PC100_CLKDIV1) & S5PC100_CLKDIV1_MPLL_MASK; ratio >>= S5PC100_CLKDIV1_MPLL_SHIFT; return rate / (ratio + 1); } static struct clk clk_dout_mpll = { .name = "dout_mpll", .id = -1, .parent = &clk_mout_am.clk, .ops = &(struct clk_ops) { .get_rate = s5pc100_clk_dout_mpll_get_rate, }, }; /* EPLL */ static struct clk clk_fout_epll = { .name = "fout_epll", .id = -1, }; static struct clk *clk_src_epll_list[] = { [0] = &clk_fin_epll, [1] = &clk_fout_epll, }; static struct clk_sources clk_src_epll = { .sources = clk_src_epll_list, .nr_sources = ARRAY_SIZE(clk_src_epll_list), }; static struct clksrc_clk clk_mout_epll = { .clk = { .name = "mout_epll", .id = -1, }, .shift = S5PC100_CLKSRC0_EPLL_SHIFT, .mask = S5PC100_CLKSRC0_EPLL_MASK, .sources = &clk_src_epll, .reg_source = S5PC100_CLKSRC0, }; /* HPLL */ static struct clk clk_fout_hpll = { .name = "fout_hpll", .id = -1, }; static struct clk *clk_src_hpll_list[] = { [0] = &clk_27m, [1] = &clk_fout_hpll, }; static struct clk_sources clk_src_hpll = { .sources = clk_src_hpll_list, .nr_sources = ARRAY_SIZE(clk_src_hpll_list), }; static struct clksrc_clk clk_mout_hpll = { .clk = { .name = "mout_hpll", .id = -1, }, .shift = S5PC100_CLKSRC0_HPLL_SHIFT, .mask = S5PC100_CLKSRC0_HPLL_MASK, .sources = &clk_src_hpll, .reg_source = S5PC100_CLKSRC0, }; /* Peripherals */ /* * The peripheral clocks are all controlled via clocksource followed * by an optional divider and gate stage. We currently roll this into * one clock which hides the intermediate clock from the mux. * * Note, the JPEG clock can only be an even divider... * * The scaler and LCD clocks depend on the S5PC100 version, and also * have a common parent divisor so are not included here. */ static inline struct clksrc_clk *to_clksrc(struct clk *clk) { return container_of(clk, struct clksrc_clk, clk); } static unsigned long s5pc100_getrate_clksrc(struct clk *clk) { struct clksrc_clk *sclk = to_clksrc(clk); unsigned long rate = clk_get_rate(clk->parent); u32 clkdiv = __raw_readl(sclk->reg_divider); clkdiv >>= sclk->divider_shift; clkdiv &= 0xf; clkdiv++; rate /= clkdiv; return rate; } static int s5pc100_setrate_clksrc(struct clk *clk, unsigned long rate) { struct clksrc_clk *sclk = to_clksrc(clk); void __iomem *reg = sclk->reg_divider; unsigned int div; u32 val; rate = clk_round_rate(clk, rate); div = clk_get_rate(clk->parent) / rate; if (div > 16) return -EINVAL; val = __raw_readl(reg); val &= ~(0xf << sclk->divider_shift); val |= (div - 1) << sclk->divider_shift; __raw_writel(val, reg); return 0; } static int s5pc100_setparent_clksrc(struct clk *clk, struct clk *parent) { struct clksrc_clk *sclk = to_clksrc(clk); struct clk_sources *srcs = sclk->sources; u32 clksrc = __raw_readl(sclk->reg_source); int src_nr = -1; int ptr; for (ptr = 0; ptr < srcs->nr_sources; ptr++) if (srcs->sources[ptr] == parent) { src_nr = ptr; break; } if (src_nr >= 0) { clksrc &= ~sclk->mask; clksrc |= src_nr << sclk->shift; __raw_writel(clksrc, sclk->reg_source); return 0; } return -EINVAL; } static unsigned long s5pc100_roundrate_clksrc(struct clk *clk, unsigned long rate) { unsigned long parent_rate = clk_get_rate(clk->parent); int div; if (rate > parent_rate) rate = parent_rate; else { div = rate / parent_rate; if (div == 0) div = 1; if (div > 16) div = 16; rate = parent_rate / div; } return rate; } static struct clk_ops s5pc100_clksrc_ops = { .set_parent = s5pc100_setparent_clksrc, .get_rate = s5pc100_getrate_clksrc, .set_rate = s5pc100_setrate_clksrc, .round_rate = s5pc100_roundrate_clksrc, }; static struct clk *clkset_spi_list[] = { &clk_mout_epll.clk, &clk_dout_mpll2, &clk_fin_epll, &clk_mout_hpll.clk, }; static struct clk_sources clkset_spi = { .sources = clkset_spi_list, .nr_sources = ARRAY_SIZE(clkset_spi_list), }; static struct clksrc_clk clk_spi0 = { .clk = { .name = "spi_bus", .id = 0, .ctrlbit = S5PC100_CLKGATE_SCLK0_SPI0, .enable = s5pc100_sclk0_ctrl, }, .shift = S5PC100_CLKSRC1_SPI0_SHIFT, .mask = S5PC100_CLKSRC1_SPI0_MASK, .sources = &clkset_spi, .divider_shift = S5PC100_CLKDIV2_SPI0_SHIFT, .reg_divider = S5PC100_CLKDIV2, .reg_source = S5PC100_CLKSRC1, }; static struct clksrc_clk clk_spi1 = { .clk = { .name = "spi_bus", .id = 1, .ctrlbit = S5PC100_CLKGATE_SCLK0_SPI1, .enable = s5pc100_sclk0_ctrl, .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC1_SPI1_SHIFT, .mask = S5PC100_CLKSRC1_SPI1_MASK, .sources = &clkset_spi, .divider_shift = S5PC100_CLKDIV2_SPI1_SHIFT, .reg_divider = S5PC100_CLKDIV2, .reg_source = S5PC100_CLKSRC1, }; static struct clksrc_clk clk_spi2 = { .clk = { .name = "spi_bus", .id = 2, .ctrlbit = S5PC100_CLKGATE_SCLK0_SPI2, .enable = s5pc100_sclk0_ctrl, .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC1_SPI2_SHIFT, .mask = S5PC100_CLKSRC1_SPI2_MASK, .sources = &clkset_spi, .divider_shift = S5PC100_CLKDIV2_SPI2_SHIFT, .reg_divider = S5PC100_CLKDIV2, .reg_source = S5PC100_CLKSRC1, }; static struct clk *clkset_uart_list[] = { &clk_mout_epll.clk, &clk_dout_mpll, }; static struct clk_sources clkset_uart = { .sources = clkset_uart_list, .nr_sources = ARRAY_SIZE(clkset_uart_list), }; static struct clksrc_clk clk_uart_uclk1 = { .clk = { .name = "uclk1", .id = -1, .ctrlbit = S5PC100_CLKGATE_SCLK0_UART, .enable = s5pc100_sclk0_ctrl, .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC1_UART_SHIFT, .mask = S5PC100_CLKSRC1_UART_MASK, .sources = &clkset_uart, .divider_shift = S5PC100_CLKDIV2_UART_SHIFT, .reg_divider = S5PC100_CLKDIV2, .reg_source = S5PC100_CLKSRC1, }; static struct clk clk_iis_cd0 = { .name = "iis_cdclk0", .id = -1, }; static struct clk clk_iis_cd1 = { .name = "iis_cdclk1", .id = -1, }; static struct clk clk_iis_cd2 = { .name = "iis_cdclk2", .id = -1, }; static struct clk clk_pcm_cd0 = { .name = "pcm_cdclk0", .id = -1, }; static struct clk clk_pcm_cd1 = { .name = "pcm_cdclk1", .id = -1, }; static struct clk *clkset_audio0_list[] = { &clk_mout_epll.clk, &clk_dout_mpll, &clk_fin_epll, &clk_iis_cd0, &clk_pcm_cd0, &clk_mout_hpll.clk, }; static struct clk_sources clkset_audio0 = { .sources = clkset_audio0_list, .nr_sources = ARRAY_SIZE(clkset_audio0_list), }; static struct clksrc_clk clk_audio0 = { .clk = { .name = "audio-bus", .id = 0, .ctrlbit = S5PC100_CLKGATE_SCLK1_AUDIO0, .enable = s5pc100_sclk1_ctrl, .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC3_AUDIO0_SHIFT, .mask = S5PC100_CLKSRC3_AUDIO0_MASK, .sources = &clkset_audio0, .divider_shift = S5PC100_CLKDIV4_AUDIO0_SHIFT, .reg_divider = S5PC100_CLKDIV4, .reg_source = S5PC100_CLKSRC3, }; static struct clk *clkset_audio1_list[] = { &clk_mout_epll.clk, &clk_dout_mpll, &clk_fin_epll, &clk_iis_cd1, &clk_pcm_cd1, &clk_mout_hpll.clk, }; static struct clk_sources clkset_audio1 = { .sources = clkset_audio1_list, .nr_sources = ARRAY_SIZE(clkset_audio1_list), }; static struct clksrc_clk clk_audio1 = { .clk = { .name = "audio-bus", .id = 1, .ctrlbit = S5PC100_CLKGATE_SCLK1_AUDIO1, .enable = s5pc100_sclk1_ctrl, .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC3_AUDIO1_SHIFT, .mask = S5PC100_CLKSRC3_AUDIO1_MASK, .sources = &clkset_audio1, .divider_shift = S5PC100_CLKDIV4_AUDIO1_SHIFT, .reg_divider = S5PC100_CLKDIV4, .reg_source = S5PC100_CLKSRC3, }; static struct clk *clkset_audio2_list[] = { &clk_mout_epll.clk, &clk_dout_mpll, &clk_fin_epll, &clk_iis_cd2, &clk_mout_hpll.clk, }; static struct clk_sources clkset_audio2 = { .sources = clkset_audio2_list, .nr_sources = ARRAY_SIZE(clkset_audio2_list), }; static struct clksrc_clk clk_audio2 = { .clk = { .name = "audio-bus", .id = 2, .ctrlbit = S5PC100_CLKGATE_SCLK1_AUDIO2, .enable = s5pc100_sclk1_ctrl, .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC3_AUDIO2_SHIFT, .mask = S5PC100_CLKSRC3_AUDIO2_MASK, .sources = &clkset_audio2, .divider_shift = S5PC100_CLKDIV4_AUDIO2_SHIFT, .reg_divider = S5PC100_CLKDIV4, .reg_source = S5PC100_CLKSRC3, }; static struct clk *clkset_spdif_list[] = { &clk_audio0.clk, &clk_audio1.clk, &clk_audio2.clk, }; static struct clk_sources clkset_spdif = { .sources = clkset_spdif_list, .nr_sources = ARRAY_SIZE(clkset_spdif_list), }; static struct clksrc_clk clk_spdif = { .clk = { .name = "spdif", .id = -1, }, .shift = S5PC100_CLKSRC3_SPDIF_SHIFT, .mask = S5PC100_CLKSRC3_SPDIF_MASK, .sources = &clkset_spdif, .reg_source = S5PC100_CLKSRC3, }; static struct clk *clkset_lcd_fimc_list[] = { &clk_mout_epll.clk, &clk_dout_mpll, &clk_mout_hpll.clk, &clk_vclk_54m, }; static struct clk_sources clkset_lcd_fimc = { .sources = clkset_lcd_fimc_list, .nr_sources = ARRAY_SIZE(clkset_lcd_fimc_list), }; static struct clksrc_clk clk_lcd = { .clk = { .name = "lcd", .id = -1, .ctrlbit = S5PC100_CLKGATE_SCLK1_LCD, .enable = s5pc100_sclk1_ctrl, .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC2_LCD_SHIFT, .mask = S5PC100_CLKSRC2_LCD_MASK, .sources = &clkset_lcd_fimc, .divider_shift = S5PC100_CLKDIV3_LCD_SHIFT, .reg_divider = S5PC100_CLKDIV3, .reg_source = S5PC100_CLKSRC2, }; static struct clksrc_clk clk_fimc0 = { .clk = { .name = "fimc", .id = 0, .ctrlbit = S5PC100_CLKGATE_SCLK1_FIMC0, .enable = s5pc100_sclk1_ctrl, .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC2_FIMC0_SHIFT, .mask = S5PC100_CLKSRC2_FIMC0_MASK, .sources = &clkset_lcd_fimc, .divider_shift = S5PC100_CLKDIV3_FIMC0_SHIFT, .reg_divider = S5PC100_CLKDIV3, .reg_source = S5PC100_CLKSRC2, }; static struct clksrc_clk clk_fimc1 = { .clk = { .name = "fimc", .id = 1, .ctrlbit = S5PC100_CLKGATE_SCLK1_FIMC1, .enable = s5pc100_sclk1_ctrl, .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC2_FIMC1_SHIFT, .mask = S5PC100_CLKSRC2_FIMC1_MASK, .sources = &clkset_lcd_fimc, .divider_shift = S5PC100_CLKDIV3_FIMC1_SHIFT, .reg_divider = S5PC100_CLKDIV3, .reg_source = S5PC100_CLKSRC2, }; static struct clksrc_clk clk_fimc2 = { .clk = { .name = "fimc", .id = 2, .ctrlbit = S5PC100_CLKGATE_SCLK1_FIMC2, .enable = s5pc100_sclk1_ctrl, .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC2_FIMC2_SHIFT, .mask = S5PC100_CLKSRC2_FIMC2_MASK, .sources = &clkset_lcd_fimc, .divider_shift = S5PC100_CLKDIV3_FIMC2_SHIFT, .reg_divider = S5PC100_CLKDIV3, .reg_source = S5PC100_CLKSRC2, }; static struct clk *clkset_mmc_list[] = { &clk_mout_epll.clk, &clk_dout_mpll, &clk_fin_epll, &clk_mout_hpll.clk , }; static struct clk_sources clkset_mmc = { .sources = clkset_mmc_list, .nr_sources = ARRAY_SIZE(clkset_mmc_list), }; static struct clksrc_clk clk_mmc0 = { .clk = { .name = "mmc_bus", .id = 0, .ctrlbit = S5PC100_CLKGATE_SCLK0_MMC0, .enable = s5pc100_sclk0_ctrl, .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC2_MMC0_SHIFT, .mask = S5PC100_CLKSRC2_MMC0_MASK, .sources = &clkset_mmc, .divider_shift = S5PC100_CLKDIV3_MMC0_SHIFT, .reg_divider = S5PC100_CLKDIV3, .reg_source = S5PC100_CLKSRC2, }; static struct clksrc_clk clk_mmc1 = { .clk = { .name = "mmc_bus", .id = 1, .ctrlbit = S5PC100_CLKGATE_SCLK0_MMC1, .enable = s5pc100_sclk0_ctrl, .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC2_MMC1_SHIFT, .mask = S5PC100_CLKSRC2_MMC1_MASK, .sources = &clkset_mmc, .divider_shift = S5PC100_CLKDIV3_MMC1_SHIFT, .reg_divider = S5PC100_CLKDIV3, .reg_source = S5PC100_CLKSRC2, }; static struct clksrc_clk clk_mmc2 = { .clk = { .name = "mmc_bus", .id = 2, .ctrlbit = S5PC100_CLKGATE_SCLK0_MMC2, .enable = s5pc100_sclk0_ctrl, .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC2_MMC2_SHIFT, .mask = S5PC100_CLKSRC2_MMC2_MASK, .sources = &clkset_mmc, .divider_shift = S5PC100_CLKDIV3_MMC2_SHIFT, .reg_divider = S5PC100_CLKDIV3, .reg_source = S5PC100_CLKSRC2, }; static struct clk *clkset_usbhost_list[] = { &clk_mout_epll.clk, &clk_dout_mpll, &clk_mout_hpll.clk, &clk_48m, }; static struct clk_sources clkset_usbhost = { .sources = clkset_usbhost_list, .nr_sources = ARRAY_SIZE(clkset_usbhost_list), }; static struct clksrc_clk clk_usbhost = { .clk = { .name = "usbhost", .id = -1, .ctrlbit = S5PC100_CLKGATE_SCLK0_USBHOST, .enable = s5pc100_sclk0_ctrl, .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC1_UHOST_SHIFT, .mask = S5PC100_CLKSRC1_UHOST_MASK, .sources = &clkset_usbhost, .divider_shift = S5PC100_CLKDIV2_UHOST_SHIFT, .reg_divider = S5PC100_CLKDIV2, .reg_source = S5PC100_CLKSRC1, }; /* Clock initialisation code */ static struct clksrc_clk *init_parents[] = { &clk_mout_apll, &clk_mout_mpll, &clk_mout_am, &clk_mout_onenand, &clk_mout_epll, &clk_mout_hpll, &clk_spi0, &clk_spi1, &clk_spi2, &clk_uart_uclk1, &clk_audio0, &clk_audio1, &clk_audio2, &clk_spdif, &clk_lcd, &clk_fimc0, &clk_fimc1, &clk_fimc2, &clk_mmc0, &clk_mmc1, &clk_mmc2, &clk_usbhost, }; static void __init_or_cpufreq s5pc100_set_clksrc(struct clksrc_clk *clk) { struct clk_sources *srcs = clk->sources; u32 clksrc = __raw_readl(clk->reg_source); clksrc &= clk->mask; clksrc >>= clk->shift; if (clksrc > srcs->nr_sources || !srcs->sources[clksrc]) { printk(KERN_ERR "%s: bad source %d\n", clk->clk.name, clksrc); return; } clk->clk.parent = srcs->sources[clksrc]; printk(KERN_INFO "%s: source is %s (%d), rate is %ld.%03ld MHz\n", clk->clk.name, clk->clk.parent->name, clksrc, print_mhz(clk_get_rate(&clk->clk))); } #define GET_DIV(clk, field) ((((clk) & field##_MASK) >> field##_SHIFT) + 1) void __init_or_cpufreq s5pc100_setup_clocks(void) { struct clk *xtal_clk; unsigned long xtal; unsigned long armclk; unsigned long hclkd0; unsigned long hclk; unsigned long pclkd0; unsigned long pclk; unsigned long apll, mpll, epll, hpll; unsigned int ptr; u32 clkdiv0, clkdiv1; printk(KERN_DEBUG "%s: registering clocks\n", __func__); clkdiv0 = __raw_readl(S5PC100_CLKDIV0); clkdiv1 = __raw_readl(S5PC100_CLKDIV1); printk(KERN_DEBUG "%s: clkdiv0 = %08x, clkdiv1 = %08x\n", __func__, clkdiv0, clkdiv1); xtal_clk = clk_get(NULL, "xtal"); BUG_ON(IS_ERR(xtal_clk)); xtal = clk_get_rate(xtal_clk); clk_put(xtal_clk); printk(KERN_DEBUG "%s: xtal is %ld\n", __func__, xtal); apll = s5pc1xx_get_pll(xtal, __raw_readl(S5PC100_APLL_CON)); mpll = s5pc1xx_get_pll(xtal, __raw_readl(S5PC100_MPLL_CON)); epll = s5pc1xx_get_pll(xtal, __raw_readl(S5PC100_EPLL_CON)); hpll = s5pc1xx_get_pll(xtal, __raw_readl(S5PC100_HPLL_CON)); printk(KERN_INFO "S5PC100: Apll=%ld.%03ld Mhz, Mpll=%ld.%03ld Mhz" ", Epll=%ld.%03ld Mhz, Hpll=%ld.%03ld Mhz\n", print_mhz(apll), print_mhz(mpll), print_mhz(epll), print_mhz(hpll)); armclk = apll / GET_DIV(clkdiv0, S5PC100_CLKDIV0_APLL); armclk = armclk / GET_DIV(clkdiv0, S5PC100_CLKDIV0_ARM); hclkd0 = armclk / GET_DIV(clkdiv0, S5PC100_CLKDIV0_D0); pclkd0 = hclkd0 / GET_DIV(clkdiv0, S5PC100_CLKDIV0_PCLKD0); hclk = mpll / GET_DIV(clkdiv1, S5PC100_CLKDIV1_D1); pclk = hclk / GET_DIV(clkdiv1, S5PC100_CLKDIV1_PCLKD1); printk(KERN_INFO "S5PC100: ARMCLK=%ld.%03ld MHz, HCLKD0=%ld.%03ld MHz," " PCLKD0=%ld.%03ld MHz\n, HCLK=%ld.%03ld MHz," " PCLK=%ld.%03ld MHz\n", print_mhz(armclk), print_mhz(hclkd0), print_mhz(pclkd0), print_mhz(hclk), print_mhz(pclk)); clk_fout_apll.rate = apll; clk_fout_mpll.rate = mpll; clk_fout_epll.rate = epll; clk_fout_hpll.rate = hpll; clk_h.rate = hclk; clk_p.rate = pclk; clk_f.rate = armclk; for (ptr = 0; ptr < ARRAY_SIZE(init_parents); ptr++) s5pc100_set_clksrc(init_parents[ptr]); } static struct clk *clks[] __initdata = { &clk_ext_xtal_mux, &clk_mout_apll.clk, &clk_dout_apll, &clk_dout_d0_bus, &clk_dout_pclkd0, &clk_dout_apll2, &clk_mout_mpll.clk, &clk_mout_am.clk, &clk_dout_d1_bus, &clk_mout_onenand.clk, &clk_dout_pclkd1, &clk_dout_mpll2, &clk_dout_cam, &clk_dout_mpll, &clk_mout_epll.clk, &clk_fout_epll, &clk_iis_cd0, &clk_iis_cd1, &clk_iis_cd2, &clk_pcm_cd0, &clk_pcm_cd1, &clk_spi0.clk, &clk_spi1.clk, &clk_spi2.clk, &clk_uart_uclk1.clk, &clk_audio0.clk, &clk_audio1.clk, &clk_audio2.clk, &clk_spdif.clk, &clk_lcd.clk, &clk_fimc0.clk, &clk_fimc1.clk, &clk_fimc2.clk, &clk_mmc0.clk, &clk_mmc1.clk, &clk_mmc2.clk, &clk_usbhost.clk, &clk_arm, }; void __init s5pc100_register_clocks(void) { struct clk *clkp; int ret; int ptr; for (ptr = 0; ptr < ARRAY_SIZE(clks); ptr++) { clkp = clks[ptr]; ret = s3c24xx_register_clock(clkp); if (ret < 0) { printk(KERN_ERR "Failed to register clock %s (%d)\n", clkp->name, ret); } } }