diff options
-rw-r--r-- | arch/arm/plat-s3c64xx/s3c6400-clock.c | 334 |
1 files changed, 154 insertions, 180 deletions
diff --git a/arch/arm/plat-s3c64xx/s3c6400-clock.c b/arch/arm/plat-s3c64xx/s3c6400-clock.c index aba08c7d312..6fde910e414 100644 --- a/arch/arm/plat-s3c64xx/s3c6400-clock.c +++ b/arch/arm/plat-s3c64xx/s3c6400-clock.c @@ -255,7 +255,6 @@ static struct clk_sources clkset_uhost = { .nr_sources = ARRAY_SIZE(clkset_uhost_list), }; - /* 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. @@ -354,105 +353,7 @@ static unsigned long s3c64xx_roundrate_clksrc(struct clk *clk, return rate; } -static struct clksrc_clk clk_mmc0 = { - .clk = { - .name = "mmc_bus", - .id = 0, - .ctrlbit = S3C_CLKCON_SCLK_MMC0, - .enable = s3c64xx_sclk_ctrl, - }, - .shift = S3C6400_CLKSRC_MMC0_SHIFT, - .mask = S3C6400_CLKSRC_MMC0_MASK, - .sources = &clkset_spi_mmc, - .divider_shift = S3C6400_CLKDIV1_MMC0_SHIFT, - .reg_divider = S3C_CLK_DIV1, -}; - -static struct clksrc_clk clk_mmc1 = { - .clk = { - .name = "mmc_bus", - .id = 1, - .ctrlbit = S3C_CLKCON_SCLK_MMC1, - .enable = s3c64xx_sclk_ctrl, - }, - .shift = S3C6400_CLKSRC_MMC1_SHIFT, - .mask = S3C6400_CLKSRC_MMC1_MASK, - .sources = &clkset_spi_mmc, - .divider_shift = S3C6400_CLKDIV1_MMC1_SHIFT, - .reg_divider = S3C_CLK_DIV1, -}; - -static struct clksrc_clk clk_mmc2 = { - .clk = { - .name = "mmc_bus", - .id = 2, - .ctrlbit = S3C_CLKCON_SCLK_MMC2, - .enable = s3c64xx_sclk_ctrl, - }, - .shift = S3C6400_CLKSRC_MMC2_SHIFT, - .mask = S3C6400_CLKSRC_MMC2_MASK, - .sources = &clkset_spi_mmc, - .divider_shift = S3C6400_CLKDIV1_MMC2_SHIFT, - .reg_divider = S3C_CLK_DIV1, -}; - -static struct clksrc_clk clk_usbhost = { - .clk = { - .name = "usb-bus-host", - .id = -1, - .ctrlbit = S3C_CLKCON_SCLK_UHOST, - .enable = s3c64xx_sclk_ctrl, - }, - .shift = S3C6400_CLKSRC_UHOST_SHIFT, - .mask = S3C6400_CLKSRC_UHOST_MASK, - .sources = &clkset_uhost, - .divider_shift = S3C6400_CLKDIV1_UHOST_SHIFT, - .reg_divider = S3C_CLK_DIV1, -}; - -static struct clksrc_clk clk_uart_uclk1 = { - .clk = { - .name = "uclk1", - .id = -1, - .ctrlbit = S3C_CLKCON_SCLK_UART, - .enable = s3c64xx_sclk_ctrl, - }, - .shift = S3C6400_CLKSRC_UART_SHIFT, - .mask = S3C6400_CLKSRC_UART_MASK, - .sources = &clkset_uart, - .divider_shift = S3C6400_CLKDIV2_UART_SHIFT, - .reg_divider = S3C_CLK_DIV2, -}; - -/* Where does UCLK0 come from? */ - -static struct clksrc_clk clk_spi0 = { - .clk = { - .name = "spi-bus", - .id = 0, - .ctrlbit = S3C_CLKCON_SCLK_SPI0, - .enable = s3c64xx_sclk_ctrl, - }, - .shift = S3C6400_CLKSRC_SPI0_SHIFT, - .mask = S3C6400_CLKSRC_SPI0_MASK, - .sources = &clkset_spi_mmc, - .divider_shift = S3C6400_CLKDIV2_SPI0_SHIFT, - .reg_divider = S3C_CLK_DIV2, -}; - -static struct clksrc_clk clk_spi1 = { - .clk = { - .name = "spi-bus", - .id = 1, - .ctrlbit = S3C_CLKCON_SCLK_SPI1, - .enable = s3c64xx_sclk_ctrl, - }, - .shift = S3C6400_CLKSRC_SPI1_SHIFT, - .mask = S3C6400_CLKSRC_SPI1_MASK, - .sources = &clkset_spi_mmc, - .divider_shift = S3C6400_CLKDIV2_SPI1_SHIFT, - .reg_divider = S3C_CLK_DIV2, -}; +/* clocks that feed other parts of the clock source tree */ static struct clk clk_iis_cd0 = { .name = "iis_cdclk0", @@ -482,20 +383,6 @@ static struct clk_sources clkset_audio0 = { .nr_sources = ARRAY_SIZE(clkset_audio0_list), }; -static struct clksrc_clk clk_audio0 = { - .clk = { - .name = "audio-bus", - .id = 0, - .ctrlbit = S3C_CLKCON_SCLK_AUDIO0, - .enable = s3c64xx_sclk_ctrl, - }, - .shift = S3C6400_CLKSRC_AUDIO0_SHIFT, - .mask = S3C6400_CLKSRC_AUDIO0_MASK, - .sources = &clkset_audio0, - .divider_shift = S3C6400_CLKDIV2_AUDIO0_SHIFT, - .reg_divider = S3C_CLK_DIV2, -}; - static struct clk *clkset_audio1_list[] = { [0] = &clk_mout_epll.clk, [1] = &clk_dout_mpll, @@ -509,34 +396,6 @@ static struct clk_sources clkset_audio1 = { .nr_sources = ARRAY_SIZE(clkset_audio1_list), }; -static struct clksrc_clk clk_audio1 = { - .clk = { - .name = "audio-bus", - .id = 1, - .ctrlbit = S3C_CLKCON_SCLK_AUDIO1, - .enable = s3c64xx_sclk_ctrl, - }, - .shift = S3C6400_CLKSRC_AUDIO1_SHIFT, - .mask = S3C6400_CLKSRC_AUDIO1_MASK, - .sources = &clkset_audio1, - .divider_shift = S3C6400_CLKDIV2_AUDIO1_SHIFT, - .reg_divider = S3C_CLK_DIV2, -}; - -static struct clksrc_clk clk_irda = { - .clk = { - .name = "irda-bus", - .id = 0, - .ctrlbit = S3C_CLKCON_SCLK_IRDA, - .enable = s3c64xx_sclk_ctrl, - }, - .shift = S3C6400_CLKSRC_IRDA_SHIFT, - .mask = S3C6400_CLKSRC_IRDA_MASK, - .sources = &clkset_irda, - .divider_shift = S3C6400_CLKDIV2_IRDA_SHIFT, - .reg_divider = S3C_CLK_DIV2, -}; - static struct clk *clkset_camif_list[] = { &clk_h2, }; @@ -546,18 +405,141 @@ static struct clk_sources clkset_camif = { .nr_sources = ARRAY_SIZE(clkset_camif_list), }; -static struct clksrc_clk clk_camif = { - .clk = { - .name = "camera", - .id = -1, - .ctrlbit = S3C_CLKCON_SCLK_CAM, - .enable = s3c64xx_sclk_ctrl, +static struct clksrc_clk clksrcs[] = { + { + .clk = { + .name = "mmc_bus", + .id = 0, + .ctrlbit = S3C_CLKCON_SCLK_MMC0, + .enable = s3c64xx_sclk_ctrl, + }, + .shift = S3C6400_CLKSRC_MMC0_SHIFT, + .mask = S3C6400_CLKSRC_MMC0_MASK, + .sources = &clkset_spi_mmc, + .divider_shift = S3C6400_CLKDIV1_MMC0_SHIFT, + .reg_divider = S3C_CLK_DIV1, + }, { + .clk = { + .name = "mmc_bus", + .id = 1, + .ctrlbit = S3C_CLKCON_SCLK_MMC1, + .enable = s3c64xx_sclk_ctrl, + }, + .shift = S3C6400_CLKSRC_MMC1_SHIFT, + .mask = S3C6400_CLKSRC_MMC1_MASK, + .sources = &clkset_spi_mmc, + .divider_shift = S3C6400_CLKDIV1_MMC1_SHIFT, + .reg_divider = S3C_CLK_DIV1, + }, { + .clk = { + .name = "mmc_bus", + .id = 2, + .ctrlbit = S3C_CLKCON_SCLK_MMC2, + .enable = s3c64xx_sclk_ctrl, + }, + .shift = S3C6400_CLKSRC_MMC2_SHIFT, + .mask = S3C6400_CLKSRC_MMC2_MASK, + .sources = &clkset_spi_mmc, + .divider_shift = S3C6400_CLKDIV1_MMC2_SHIFT, + .reg_divider = S3C_CLK_DIV1, + }, { + .clk = { + .name = "usb-bus-host", + .id = -1, + .ctrlbit = S3C_CLKCON_SCLK_UHOST, + .enable = s3c64xx_sclk_ctrl, + }, + .shift = S3C6400_CLKSRC_UHOST_SHIFT, + .mask = S3C6400_CLKSRC_UHOST_MASK, + .sources = &clkset_uhost, + .divider_shift = S3C6400_CLKDIV1_UHOST_SHIFT, + .reg_divider = S3C_CLK_DIV1, + }, { + .clk = { + .name = "uclk1", + .id = -1, + .ctrlbit = S3C_CLKCON_SCLK_UART, + .enable = s3c64xx_sclk_ctrl, + }, + .shift = S3C6400_CLKSRC_UART_SHIFT, + .mask = S3C6400_CLKSRC_UART_MASK, + .sources = &clkset_uart, + .divider_shift = S3C6400_CLKDIV2_UART_SHIFT, + .reg_divider = S3C_CLK_DIV2, + }, { +/* Where does UCLK0 come from? */ + .clk = { + .name = "spi-bus", + .id = 0, + .ctrlbit = S3C_CLKCON_SCLK_SPI0, + .enable = s3c64xx_sclk_ctrl, + }, + .shift = S3C6400_CLKSRC_SPI0_SHIFT, + .mask = S3C6400_CLKSRC_SPI0_MASK, + .sources = &clkset_spi_mmc, + .divider_shift = S3C6400_CLKDIV2_SPI0_SHIFT, + .reg_divider = S3C_CLK_DIV2, + }, { + .clk = { + .name = "spi-bus", + .id = 1, + .ctrlbit = S3C_CLKCON_SCLK_SPI1, + .enable = s3c64xx_sclk_ctrl, + }, + .shift = S3C6400_CLKSRC_SPI1_SHIFT, + .mask = S3C6400_CLKSRC_SPI1_MASK, + .sources = &clkset_spi_mmc, + .divider_shift = S3C6400_CLKDIV2_SPI1_SHIFT, + .reg_divider = S3C_CLK_DIV2, + }, { + .clk = { + .name = "audio-bus", + .id = 0, + .ctrlbit = S3C_CLKCON_SCLK_AUDIO0, + .enable = s3c64xx_sclk_ctrl, + }, + .shift = S3C6400_CLKSRC_AUDIO0_SHIFT, + .mask = S3C6400_CLKSRC_AUDIO0_MASK, + .sources = &clkset_audio0, + .divider_shift = S3C6400_CLKDIV2_AUDIO0_SHIFT, + .reg_divider = S3C_CLK_DIV2, + }, { + .clk = { + .name = "audio-bus", + .id = 1, + .ctrlbit = S3C_CLKCON_SCLK_AUDIO1, + .enable = s3c64xx_sclk_ctrl, + }, + .shift = S3C6400_CLKSRC_AUDIO1_SHIFT, + .mask = S3C6400_CLKSRC_AUDIO1_MASK, + .sources = &clkset_audio1, + .divider_shift = S3C6400_CLKDIV2_AUDIO1_SHIFT, + .reg_divider = S3C_CLK_DIV2, + }, { + .clk = { + .name = "irda-bus", + .id = 0, + .ctrlbit = S3C_CLKCON_SCLK_IRDA, + .enable = s3c64xx_sclk_ctrl, + }, + .shift = S3C6400_CLKSRC_IRDA_SHIFT, + .mask = S3C6400_CLKSRC_IRDA_MASK, + .sources = &clkset_irda, + .divider_shift = S3C6400_CLKDIV2_IRDA_SHIFT, + .reg_divider = S3C_CLK_DIV2, + }, { + .clk = { + .name = "camera", + .id = -1, + .ctrlbit = S3C_CLKCON_SCLK_CAM, + .enable = s3c64xx_sclk_ctrl, + }, + .shift = 0, + .mask = 0, + .sources = &clkset_camif, + .divider_shift = S3C6400_CLKDIV0_CAM_SHIFT, + .reg_divider = S3C_CLK_DIV0, }, - .shift = 0, - .mask = 0, - .sources = &clkset_camif, - .divider_shift = S3C6400_CLKDIV0_CAM_SHIFT, - .reg_divider = S3C_CLK_DIV0, }; /* Clock initialisation code */ @@ -566,17 +548,6 @@ static struct clksrc_clk *init_parents[] = { &clk_mout_apll, &clk_mout_epll, &clk_mout_mpll, - &clk_mmc0, - &clk_mmc1, - &clk_mmc2, - &clk_usbhost, - &clk_uart_uclk1, - &clk_spi0, - &clk_spi1, - &clk_audio0, - &clk_audio1, - &clk_irda, - &clk_camif, }; static void __init_or_cpufreq s3c6400_set_clksrc(struct clksrc_clk *clk) @@ -593,11 +564,6 @@ static void __init_or_cpufreq s3c6400_set_clksrc(struct clksrc_clk *clk) return; } - clk->clk.get_rate = s3c64xx_getrate_clksrc; - clk->clk.set_rate = s3c64xx_setrate_clksrc; - clk->clk.set_parent = s3c64xx_setparent_clksrc; - clk->clk.round_rate = s3c64xx_roundrate_clksrc; - clk->clk.parent = srcs->sources[clksrc]; printk(KERN_INFO "%s: source is %s (%d), rate is %ld\n", @@ -664,6 +630,9 @@ void __init_or_cpufreq s3c6400_setup_clocks(void) for (ptr = 0; ptr < ARRAY_SIZE(init_parents); ptr++) s3c6400_set_clksrc(init_parents[ptr]); + + for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++) + s3c6400_set_clksrc(&clksrcs[ptr]); } static struct clk *clks[] __initdata = { @@ -674,17 +643,6 @@ static struct clk *clks[] __initdata = { &clk_mout_epll.clk, &clk_mout_mpll.clk, &clk_dout_mpll, - &clk_mmc0.clk, - &clk_mmc1.clk, - &clk_mmc2.clk, - &clk_usbhost.clk, - &clk_uart_uclk1.clk, - &clk_spi0.clk, - &clk_spi1.clk, - &clk_audio0.clk, - &clk_audio1.clk, - &clk_irda.clk, - &clk_camif.clk, &clk_arm, }; @@ -716,4 +674,20 @@ void __init s3c6400_register_clocks(unsigned armclk_divlimit) clkp->name, ret); } } + + for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++) { + clkp = &clksrcs[ptr].clk; + + /* all clksrc clocks have these */ + clkp->get_rate = s3c64xx_getrate_clksrc; + clkp->set_rate = s3c64xx_setrate_clksrc; + clkp->set_parent = s3c64xx_setparent_clksrc; + clkp->round_rate = s3c64xx_roundrate_clksrc; + + ret = s3c24xx_register_clock(clkp); + if (ret < 0) { + printk(KERN_ERR "Failed to register clock %s (%d)\n", + clkp->name, ret); + } + } } |