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Commit d16067b2 authored by Ben Dooks's avatar Ben Dooks
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ARM: Merge for-2635/s5p6440-clock 

Merge branch 'for-2635/s5p6440-clock' into for-linus/samsung2
parents 2abbfb26 b3b84d65
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Showing with 249 additions and 101 deletions
arch/arm/mach-s5p6440/clock.c
View file @ d16067b2
......@@ -134,24 +134,6 @@ static struct clksrc_clk clk_mout_mpll = {
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 1, .size = 1 },
};
static struct clk clk_h_low = {
.name = "hclk_low",
.id = -1,
.rate = 0,
.parent = NULL,
.ctrlbit = 0,
.ops = &clk_ops_def_setrate,
};
static struct clk clk_p_low = {
.name = "pclk_low",
.id = -1,
.rate = 0,
.parent = NULL,
.ctrlbit = 0,
.ops = &clk_ops_def_setrate,
};
enum perf_level {
L0 = 532*1000,
L1 = 266*1000,
......@@ -247,23 +229,70 @@ static struct clk_ops s5p6440_clkarm_ops = {
.round_rate = s5p6440_armclk_round_rate,
};
static unsigned long s5p6440_clk_doutmpll_get_rate(struct clk *clk)
{
unsigned long rate = clk_get_rate(clk->parent);
if (__raw_readl(S5P_CLK_DIV0) & S5P_CLKDIV0_MPLL_MASK)
rate /= 2;
return rate;
}
static struct clksrc_clk clk_armclk = {
.clk = {
.name = "armclk",
.id = 1,
.parent = &clk_mout_apll.clk,
.ops = &s5p6440_clkarm_ops,
},
.reg_div = { .reg = S5P_CLK_DIV0, .shift = 0, .size = 4 },
};
static struct clk clk_dout_mpll = {
static struct clksrc_clk clk_dout_mpll = {
.clk = {
.name = "dout_mpll",
.id = -1,
.parent = &clk_mout_mpll.clk,
.ops = &(struct clk_ops) {
.get_rate = s5p6440_clk_doutmpll_get_rate,
},
.reg_div = { .reg = S5P_CLK_DIV0, .shift = 4, .size = 1 },
};
static struct clksrc_clk clk_hclk = {
.clk = {
.name = "clk_hclk",
.id = -1,
.parent = &clk_armclk.clk,
},
.reg_div = { .reg = S5P_CLK_DIV0, .shift = 8, .size = 4 },
};
static struct clksrc_clk clk_pclk = {
.clk = {
.name = "clk_pclk",
.id = -1,
.parent = &clk_hclk.clk,
},
.reg_div = { .reg = S5P_CLK_DIV0, .shift = 12, .size = 4 },
};
static struct clk *clkset_hclklow_list[] = {
&clk_mout_apll.clk,
&clk_mout_mpll.clk,
};
static struct clksrc_sources clkset_hclklow = {
.sources = clkset_hclklow_list,
.nr_sources = ARRAY_SIZE(clkset_hclklow_list),
};
static struct clksrc_clk clk_hclk_low = {
.clk = {
.name = "hclk_low",
.id = -1,
},
.sources = &clkset_hclklow,
.reg_src = { .reg = S5P_SYS_OTHERS, .shift = 6, .size = 1 },
.reg_div = { .reg = S5P_CLK_DIV3, .shift = 8, .size = 4 },
};
static struct clksrc_clk clk_pclk_low = {
.clk = {
.name = "pclk_low",
.id = -1,
.parent = &clk_hclk_low.clk,
},
.reg_div = { .reg = S5P_CLK_DIV3, .shift = 12, .size = 4 },
};
int s5p6440_clk48m_ctrl(struct clk *clk, int enable)
......@@ -307,6 +336,11 @@ static int s5p6440_sclk_ctrl(struct clk *clk, int enable)
return s5p_gatectrl(S5P_CLK_GATE_SCLK0, clk, enable);
}
static int s5p6440_sclk1_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P_CLK_GATE_SCLK1, clk, enable);
}
static int s5p6440_mem_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P_CLK_GATE_MEM0, clk, enable);
......@@ -321,37 +355,37 @@ static struct clk init_clocks_disable[] = {
{
.name = "nand",
.id = -1,
.parent = &clk_h,
.parent = &clk_hclk.clk,
.enable = s5p6440_mem_ctrl,
.ctrlbit = S5P_CLKCON_MEM0_HCLK_NFCON,
}, {
.name = "adc",
.id = -1,
.parent = &clk_p_low,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_TSADC,
}, {
.name = "i2c",
.id = -1,
.parent = &clk_p_low,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_IIC0,
}, {
.name = "i2s_v40",
.id = 0,
.parent = &clk_p_low,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_IIS2,
}, {
.name = "spi",
.id = 0,
.parent = &clk_p_low,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_SPI0,
}, {
.name = "spi",
.id = 1,
.parent = &clk_p_low,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_SPI1,
}, {
......@@ -387,58 +421,124 @@ static struct clk init_clocks_disable[] = {
}, {
.name = "otg",
.id = -1,
.parent = &clk_h_low,
.parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = S5P_CLKCON_HCLK0_USB
}, {
.name = "post",
.id = -1,
.parent = &clk_h_low,
.parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = S5P_CLKCON_HCLK0_POST0
}, {
.name = "lcd",
.id = -1,
.parent = &clk_h_low,
.parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk1_ctrl,
.ctrlbit = S5P_CLKCON_HCLK1_DISPCON,
}, {
.name = "hsmmc",
.id = 0,
.parent = &clk_h_low,
.parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = S5P_CLKCON_HCLK0_HSMMC0,
}, {
.name = "hsmmc",
.id = 1,
.parent = &clk_h_low,
.parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = S5P_CLKCON_HCLK0_HSMMC1,
}, {
.name = "hsmmc",
.id = 2,
.parent = &clk_h_low,
.parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = S5P_CLKCON_HCLK0_HSMMC2,
}, {
.name = "rtc",
.id = -1,
.parent = &clk_p_low,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_RTC,
}, {
.name = "watchdog",
.id = -1,
.parent = &clk_p_low,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_WDT,
}, {
.name = "timers",
.id = -1,
.parent = &clk_p_low,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_PWM,
}
}, {
.name = "hclk_fimgvg",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p6440_hclk1_ctrl,
.ctrlbit = (1 << 2),
}, {
.name = "tsi",
.id = -1,
.parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk1_ctrl,
.ctrlbit = (1 << 0),
}, {
.name = "pclk_fimgvg",
.id = -1,
.parent = &clk_pclk.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = (1 << 31),
}, {
.name = "dmc0",
.id = -1,
.parent = &clk_pclk.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = (1 << 30),
}, {
.name = "etm",
.id = -1,
.parent = &clk_pclk.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = (1 << 29),
}, {
.name = "dsim",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = (1 << 28),
}, {
.name = "gps",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = (1 << 25),
}, {
.name = "pcm",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = (1 << 8),
}, {
.name = "irom",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = (1 << 25),
}, {
.name = "dma",
.id = -1,
.parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = (1 << 12),
}, {
.name = "2d",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = (1 << 8),
},
};
/*
......@@ -448,34 +548,46 @@ static struct clk init_clocks[] = {
{
.name = "gpio",
.id = -1,
.parent = &clk_p_low,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_GPIO,
}, {
.name = "uart",
.id = 0,
.parent = &clk_p_low,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_UART0,
}, {
.name = "uart",
.id = 1,
.parent = &clk_p_low,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_UART1,
}, {
.name = "uart",
.id = 2,
.parent = &clk_p_low,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_UART2,
}, {
.name = "uart",
.id = 3,
.parent = &clk_p_low,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_UART3,
}
}, {
.name = "mem",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = (1 << 21),
}, {
.name = "intc",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = (1 << 1),
},
};
static struct clk clk_iis_cd_v40 = {
......@@ -488,20 +600,20 @@ static struct clk clk_pcm_cd = {
.id = -1,
};
static struct clk *clkset_spi_mmc_list[] = {
static struct clk *clkset_group1_list[] = {
&clk_mout_epll.clk,
&clk_dout_mpll,
&clk_dout_mpll.clk,
&clk_fin_epll,
};
static struct clksrc_sources clkset_spi_mmc = {
.sources = clkset_spi_mmc_list,
.nr_sources = ARRAY_SIZE(clkset_spi_mmc_list),
static struct clksrc_sources clkset_group1 = {
.sources = clkset_group1_list,
.nr_sources = ARRAY_SIZE(clkset_group1_list),
};
static struct clk *clkset_uart_list[] = {
&clk_mout_epll.clk,
&clk_dout_mpll
&clk_dout_mpll.clk,
};
static struct clksrc_sources clkset_uart = {
......@@ -509,6 +621,19 @@ static struct clksrc_sources clkset_uart = {
.nr_sources = ARRAY_SIZE(clkset_uart_list),
};
static struct clk *clkset_audio_list[] = {
&clk_mout_epll.clk,
&clk_dout_mpll.clk,
&clk_fin_epll,
&clk_iis_cd_v40,
&clk_pcm_cd,
};
static struct clksrc_sources clkset_audio = {
.sources = clkset_audio_list,
.nr_sources = ARRAY_SIZE(clkset_audio_list),
};
static struct clksrc_clk clksrcs[] = {
{
.clk = {
......@@ -517,7 +642,7 @@ static struct clksrc_clk clksrcs[] = {
.ctrlbit = S5P_CLKCON_SCLK0_MMC0,
.enable = s5p6440_sclk_ctrl,
},
.sources = &clkset_spi_mmc,
.sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 18, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV1, .shift = 0, .size = 4 },
}, {
......@@ -527,7 +652,7 @@ static struct clksrc_clk clksrcs[] = {
.ctrlbit = S5P_CLKCON_SCLK0_MMC1,
.enable = s5p6440_sclk_ctrl,
},
.sources = &clkset_spi_mmc,
.sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 20, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV1, .shift = 4, .size = 4 },
}, {
......@@ -537,7 +662,7 @@ static struct clksrc_clk clksrcs[] = {
.ctrlbit = S5P_CLKCON_SCLK0_MMC2,
.enable = s5p6440_sclk_ctrl,
},
.sources = &clkset_spi_mmc,
.sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 22, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV1, .shift = 8, .size = 4 },
}, {
......@@ -557,7 +682,7 @@ static struct clksrc_clk clksrcs[] = {
.ctrlbit = S5P_CLKCON_SCLK0_SPI0,
.enable = s5p6440_sclk_ctrl,
},
.sources = &clkset_spi_mmc,
.sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 14, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV2, .shift = 0, .size = 4 },
}, {
......@@ -567,17 +692,63 @@ static struct clksrc_clk clksrcs[] = {
.ctrlbit = S5P_CLKCON_SCLK0_SPI1,
.enable = s5p6440_sclk_ctrl,
},
.sources = &clkset_spi_mmc,
.sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 16, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV2, .shift = 4, .size = 4 },
}
}, {
.clk = {
.name = "sclk_post",
.id = -1,
.ctrlbit = (1 << 10),
.enable = s5p6440_sclk_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 26, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV1, .shift = 12, .size = 4 },
}, {
.clk = {
.name = "sclk_dispcon",
.id = -1,
.ctrlbit = (1 << 1),
.enable = s5p6440_sclk1_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC1, .shift = 4, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV3, .shift = 0, .size = 4 },
}, {
.clk = {
.name = "sclk_fimgvg",
.id = -1,
.ctrlbit = (1 << 2),
.enable = s5p6440_sclk1_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC1, .shift = 8, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV3, .shift = 4, .size = 4 },
}, {
.clk = {
.name = "sclk_audio2",
.id = -1,
.ctrlbit = (1 << 11),
.enable = s5p6440_sclk_ctrl,
},
.sources = &clkset_audio,
.reg_src = { .reg = S5P_CLK_SRC1, .shift = 0, .size = 3 },
.reg_div = { .reg = S5P_CLK_DIV2, .shift = 24, .size = 4 },
},
};
/* Clock initialisation code */
static struct clksrc_clk *init_parents[] = {
static struct clksrc_clk *sysclks[] = {
&clk_mout_apll,
&clk_mout_epll,
&clk_mout_mpll,
&clk_dout_mpll,
&clk_armclk,
&clk_hclk,
&clk_pclk,
&clk_hclk_low,
&clk_pclk_low,
};
void __init_or_cpufreq s5p6440_setup_clocks(void)
......@@ -593,21 +764,13 @@ void __init_or_cpufreq s5p6440_setup_clocks(void)
unsigned long apll;
unsigned long mpll;
unsigned int ptr;
u32 clkdiv0;
u32 clkdiv3;
/* Set S5P6440 functions for clk_fout_epll */
clk_fout_epll.enable = s5p6440_epll_enable;
clk_fout_epll.ops = &s5p6440_epll_ops;
/* Set S5P6440 functions for arm clock */
clk_arm.parent = &clk_mout_apll.clk;
clk_arm.ops = &s5p6440_clkarm_ops;
clk_48m.enable = s5p6440_clk48m_ctrl;
clkdiv0 = __raw_readl(S5P_CLK_DIV0);
clkdiv3 = __raw_readl(S5P_CLK_DIV3);
xtal_clk = clk_get(NULL, "ext_xtal");
BUG_ON(IS_ERR(xtal_clk));
......@@ -619,41 +782,28 @@ void __init_or_cpufreq s5p6440_setup_clocks(void)
mpll = s5p_get_pll45xx(xtal, __raw_readl(S5P_MPLL_CON), pll_4502);
apll = s5p_get_pll45xx(xtal, __raw_readl(S5P_APLL_CON), pll_4502);
clk_fout_mpll.rate = mpll;
clk_fout_epll.rate = epll;
clk_fout_apll.rate = apll;
printk(KERN_INFO "S5P6440: PLL settings, A=%ld.%ldMHz, M=%ld.%ldMHz," \
" E=%ld.%ldMHz\n",
print_mhz(apll), print_mhz(mpll), print_mhz(epll));
fclk = apll / GET_DIV(clkdiv0, S5P_CLKDIV0_ARM);
hclk = fclk / GET_DIV(clkdiv0, S5P_CLKDIV0_HCLK);
pclk = hclk / GET_DIV(clkdiv0, S5P_CLKDIV0_PCLK);
if (__raw_readl(S5P_OTHERS) & S5P_OTHERS_HCLK_LOW_SEL_MPLL) {
/* Asynchronous mode */
hclk_low = mpll / GET_DIV(clkdiv3, S5P_CLKDIV3_HCLK_LOW);
} else {
/* Synchronous mode */
hclk_low = apll / GET_DIV(clkdiv3, S5P_CLKDIV3_HCLK_LOW);
}
pclk_low = hclk_low / GET_DIV(clkdiv3, S5P_CLKDIV3_PCLK_LOW);
fclk = clk_get_rate(&clk_armclk.clk);
hclk = clk_get_rate(&clk_hclk.clk);
pclk = clk_get_rate(&clk_pclk.clk);
hclk_low = clk_get_rate(&clk_hclk_low.clk);
pclk_low = clk_get_rate(&clk_pclk_low.clk);
printk(KERN_INFO "S5P6440: HCLK=%ld.%ldMHz, HCLK_LOW=%ld.%ldMHz," \
" PCLK=%ld.%ldMHz, PCLK_LOW=%ld.%ldMHz\n",
print_mhz(hclk), print_mhz(hclk_low),
print_mhz(pclk), print_mhz(pclk_low));
clk_fout_mpll.rate = mpll;
clk_fout_epll.rate = epll;
clk_fout_apll.rate = apll;
clk_f.rate = fclk;
clk_h.rate = hclk;
clk_p.rate = pclk;
clk_h_low.rate = hclk_low;
clk_p_low.rate = pclk_low;
for (ptr = 0; ptr < ARRAY_SIZE(init_parents); ptr++)
s3c_set_clksrc(init_parents[ptr], true);
for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
s3c_set_clksrc(&clksrcs[ptr], true);
......@@ -661,13 +811,8 @@ void __init_or_cpufreq s5p6440_setup_clocks(void)
static struct clk *clks[] __initdata = {
&clk_ext,
&clk_mout_epll.clk,
&clk_mout_mpll.clk,
&clk_dout_mpll,
&clk_iis_cd_v40,
&clk_pcm_cd,
&clk_p_low,
&clk_h_low,
};
void __init s5p6440_register_clocks(void)
......@@ -680,6 +825,9 @@ void __init s5p6440_register_clocks(void)
if (ret > 0)
printk(KERN_ERR "Failed to register %u clocks\n", ret);
for (ptr = 0; ptr < ARRAY_SIZE(sysclks); ptr++)
s3c_register_clksrc(sysclks[ptr], 1);
s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks));
......
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