#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
+#include <linux/clk.h>
+#include <linux/err.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <plat/cpu.h>
#include <plat/devs.h>
+#include <plat/cpu-freq.h>
#include <plat/clock.h>
+#include <plat/clock-clksrc.h>
+
+/* 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_fout_mpll clk_mpll
+#define clk_fout_epll clk_epll
struct clk clk_h2 = {
.name = "hclk2",
}
};
+
+static struct clk clk_fout_apll = {
+ .name = "fout_apll",
+ .id = -1,
+};
+
+static struct clk *clk_src_apll_list[] = {
+ [0] = &clk_fin_apll,
+ [1] = &clk_fout_apll,
+};
+
+static struct clksrc_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,
+ },
+ .reg_src = { .reg = S3C_CLK_SRC, .shift = 0, .size = 1 },
+ .sources = &clk_src_apll,
+};
+
+static struct clk *clk_src_epll_list[] = {
+ [0] = &clk_fin_epll,
+ [1] = &clk_fout_epll,
+};
+
+static struct clksrc_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,
+ },
+ .reg_src = { .reg = S3C_CLK_SRC, .shift = 2, .size = 1 },
+ .sources = &clk_src_epll,
+};
+
+static struct clk *clk_src_mpll_list[] = {
+ [0] = &clk_fin_mpll,
+ [1] = &clk_fout_mpll,
+};
+
+static struct clksrc_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,
+ },
+ .reg_src = { .reg = S3C_CLK_SRC, .shift = 1, .size = 1 },
+ .sources = &clk_src_mpll,
+};
+
+static unsigned int armclk_mask;
+
+static unsigned long s3c64xx_clk_arm_get_rate(struct clk *clk)
+{
+ unsigned long rate = clk_get_rate(clk->parent);
+ u32 clkdiv;
+
+ /* divisor mask starts at bit0, so no need to shift */
+ clkdiv = __raw_readl(S3C_CLK_DIV0) & armclk_mask;
+
+ return rate / (clkdiv + 1);
+}
+
+static unsigned long s3c64xx_clk_arm_round_rate(struct clk *clk,
+ unsigned long rate)
+{
+ unsigned long parent = clk_get_rate(clk->parent);
+ u32 div;
+
+ if (parent < rate)
+ return parent;
+
+ div = (parent / rate) - 1;
+ if (div > armclk_mask)
+ div = armclk_mask;
+
+ return parent / (div + 1);
+}
+
+static int s3c64xx_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 / (armclk_mask + 1))
+ return -EINVAL;
+
+ rate = clk_round_rate(clk, rate);
+ div = clk_get_rate(clk->parent) / rate;
+
+ val = __raw_readl(S3C_CLK_DIV0);
+ val &= ~armclk_mask;
+ val |= (div - 1);
+ __raw_writel(val, S3C_CLK_DIV0);
+
+ return 0;
+
+}
+
+static struct clk clk_arm = {
+ .name = "armclk",
+ .id = -1,
+ .parent = &clk_mout_apll.clk,
+ .ops = &(struct clk_ops) {
+ .get_rate = s3c64xx_clk_arm_get_rate,
+ .set_rate = s3c64xx_clk_arm_set_rate,
+ .round_rate = s3c64xx_clk_arm_round_rate,
+ },
+};
+
+static unsigned long s3c64xx_clk_doutmpll_get_rate(struct clk *clk)
+{
+ unsigned long rate = clk_get_rate(clk->parent);
+
+ printk(KERN_DEBUG "%s: parent is %ld\n", __func__, rate);
+
+ if (__raw_readl(S3C_CLK_DIV0) & S3C6400_CLKDIV0_MPLL_MASK)
+ rate /= 2;
+
+ return rate;
+}
+
+static struct clk_ops clk_dout_ops = {
+ .get_rate = s3c64xx_clk_doutmpll_get_rate,
+};
+
+static struct clk clk_dout_mpll = {
+ .name = "dout_mpll",
+ .id = -1,
+ .parent = &clk_mout_mpll.clk,
+ .ops = &clk_dout_ops,
+};
+
+static struct clk *clkset_spi_mmc_list[] = {
+ &clk_mout_epll.clk,
+ &clk_dout_mpll,
+ &clk_fin_epll,
+ &clk_27m,
+};
+
+static struct clksrc_sources clkset_spi_mmc = {
+ .sources = clkset_spi_mmc_list,
+ .nr_sources = ARRAY_SIZE(clkset_spi_mmc_list),
+};
+
+static struct clk *clkset_irda_list[] = {
+ &clk_mout_epll.clk,
+ &clk_dout_mpll,
+ NULL,
+ &clk_27m,
+};
+
+static struct clksrc_sources clkset_irda = {
+ .sources = clkset_irda_list,
+ .nr_sources = ARRAY_SIZE(clkset_irda_list),
+};
+
+static struct clk *clkset_uart_list[] = {
+ &clk_mout_epll.clk,
+ &clk_dout_mpll,
+ NULL,
+ NULL
+};
+
+static struct clksrc_sources clkset_uart = {
+ .sources = clkset_uart_list,
+ .nr_sources = ARRAY_SIZE(clkset_uart_list),
+};
+
+static struct clk *clkset_uhost_list[] = {
+ &clk_48m,
+ &clk_mout_epll.clk,
+ &clk_dout_mpll,
+ &clk_fin_epll,
+};
+
+static struct clksrc_sources clkset_uhost = {
+ .sources = clkset_uhost_list,
+ .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.
+ *
+ * Note, the JPEG clock can only be an even divider...
+ *
+ * The scaler and LCD clocks depend on the S3C64XX version, and also
+ * have a common parent divisor so are not included here.
+ */
+
+/* clocks that feed other parts of the clock source tree */
+
+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_pcm_cd = {
+ .name = "pcm_cdclk",
+ .id = -1,
+};
+
+static struct clk *clkset_audio0_list[] = {
+ [0] = &clk_mout_epll.clk,
+ [1] = &clk_dout_mpll,
+ [2] = &clk_fin_epll,
+ [3] = &clk_iis_cd0,
+ [4] = &clk_pcm_cd,
+};
+
+static struct clksrc_sources clkset_audio0 = {
+ .sources = clkset_audio0_list,
+ .nr_sources = ARRAY_SIZE(clkset_audio0_list),
+};
+
+static struct clk *clkset_audio1_list[] = {
+ [0] = &clk_mout_epll.clk,
+ [1] = &clk_dout_mpll,
+ [2] = &clk_fin_epll,
+ [3] = &clk_iis_cd1,
+ [4] = &clk_pcm_cd,
+};
+
+static struct clksrc_sources clkset_audio1 = {
+ .sources = clkset_audio1_list,
+ .nr_sources = ARRAY_SIZE(clkset_audio1_list),
+};
+
+static struct clk *clkset_camif_list[] = {
+ &clk_h2,
+};
+
+static struct clksrc_sources clkset_camif = {
+ .sources = clkset_camif_list,
+ .nr_sources = ARRAY_SIZE(clkset_camif_list),
+};
+
+static struct clksrc_clk clksrcs[] = {
+ {
+ .clk = {
+ .name = "mmc_bus",
+ .id = 0,
+ .ctrlbit = S3C_CLKCON_SCLK_MMC0,
+ .enable = s3c64xx_sclk_ctrl,
+ },
+ .reg_src = { .reg = S3C_CLK_SRC, .shift = 18, .size = 2 },
+ .reg_div = { .reg = S3C_CLK_DIV1, .shift = 0, .size = 4 },
+ .sources = &clkset_spi_mmc,
+ }, {
+ .clk = {
+ .name = "mmc_bus",
+ .id = 1,
+ .ctrlbit = S3C_CLKCON_SCLK_MMC1,
+ .enable = s3c64xx_sclk_ctrl,
+ },
+ .reg_src = { .reg = S3C_CLK_SRC, .shift = 20, .size = 2 },
+ .reg_div = { .reg = S3C_CLK_DIV1, .shift = 4, .size = 4 },
+ .sources = &clkset_spi_mmc,
+ }, {
+ .clk = {
+ .name = "mmc_bus",
+ .id = 2,
+ .ctrlbit = S3C_CLKCON_SCLK_MMC2,
+ .enable = s3c64xx_sclk_ctrl,
+ },
+ .reg_src = { .reg = S3C_CLK_SRC, .shift = 22, .size = 2 },
+ .reg_div = { .reg = S3C_CLK_DIV1, .shift = 8, .size = 4 },
+ .sources = &clkset_spi_mmc,
+ }, {
+ .clk = {
+ .name = "usb-bus-host",
+ .id = -1,
+ .ctrlbit = S3C_CLKCON_SCLK_UHOST,
+ .enable = s3c64xx_sclk_ctrl,
+ },
+ .reg_src = { .reg = S3C_CLK_SRC, .shift = 5, .size = 2 },
+ .reg_div = { .reg = S3C_CLK_DIV1, .shift = 20, .size = 4 },
+ .sources = &clkset_uhost,
+ }, {
+ .clk = {
+ .name = "uclk1",
+ .id = -1,
+ .ctrlbit = S3C_CLKCON_SCLK_UART,
+ .enable = s3c64xx_sclk_ctrl,
+ },
+ .reg_src = { .reg = S3C_CLK_SRC, .shift = 13, .size = 1 },
+ .reg_div = { .reg = S3C_CLK_DIV2, .shift = 16, .size = 4 },
+ .sources = &clkset_uart,
+ }, {
+/* Where does UCLK0 come from? */
+ .clk = {
+ .name = "spi-bus",
+ .id = 0,
+ .ctrlbit = S3C_CLKCON_SCLK_SPI0,
+ .enable = s3c64xx_sclk_ctrl,
+ },
+ .reg_src = { .reg = S3C_CLK_SRC, .shift = 14, .size = 2 },
+ .reg_div = { .reg = S3C_CLK_DIV2, .shift = 0, .size = 4 },
+ .sources = &clkset_spi_mmc,
+ }, {
+ .clk = {
+ .name = "spi-bus",
+ .id = 1,
+ .ctrlbit = S3C_CLKCON_SCLK_SPI1,
+ .enable = s3c64xx_sclk_ctrl,
+ },
+ .reg_src = { .reg = S3C_CLK_SRC, .shift = 16, .size = 2 },
+ .reg_div = { .reg = S3C_CLK_DIV2, .shift = 4, .size = 4 },
+ .sources = &clkset_spi_mmc,
+ }, {
+ .clk = {
+ .name = "audio-bus",
+ .id = 0,
+ .ctrlbit = S3C_CLKCON_SCLK_AUDIO0,
+ .enable = s3c64xx_sclk_ctrl,
+ },
+ .reg_src = { .reg = S3C_CLK_SRC, .shift = 7, .size = 3 },
+ .reg_div = { .reg = S3C_CLK_DIV2, .shift = 8, .size = 4 },
+ .sources = &clkset_audio0,
+ }, {
+ .clk = {
+ .name = "audio-bus",
+ .id = 1,
+ .ctrlbit = S3C_CLKCON_SCLK_AUDIO1,
+ .enable = s3c64xx_sclk_ctrl,
+ },
+ .reg_src = { .reg = S3C_CLK_SRC, .shift = 10, .size = 3 },
+ .reg_div = { .reg = S3C_CLK_DIV2, .shift = 12, .size = 4 },
+ .sources = &clkset_audio1,
+ }, {
+ .clk = {
+ .name = "irda-bus",
+ .id = 0,
+ .ctrlbit = S3C_CLKCON_SCLK_IRDA,
+ .enable = s3c64xx_sclk_ctrl,
+ },
+ .reg_src = { .reg = S3C_CLK_SRC, .shift = 24, .size = 2 },
+ .reg_div = { .reg = S3C_CLK_DIV2, .shift = 20, .size = 4 },
+ .sources = &clkset_irda,
+ }, {
+ .clk = {
+ .name = "camera",
+ .id = -1,
+ .ctrlbit = S3C_CLKCON_SCLK_CAM,
+ .enable = s3c64xx_sclk_ctrl,
+ },
+ .reg_div = { .reg = S3C_CLK_DIV0, .shift = 20, .size = 4 },
+ .reg_src = { .reg = NULL, .shift = 0, .size = 0 },
+ .sources = &clkset_camif,
+ },
+};
+
+/* Clock initialisation code */
+
+static struct clksrc_clk *init_parents[] = {
+ &clk_mout_apll,
+ &clk_mout_epll,
+ &clk_mout_mpll,
+};
+
+#define GET_DIV(clk, field) ((((clk) & field##_MASK) >> field##_SHIFT) + 1)
+
+void __init_or_cpufreq s3c6400_setup_clocks(void)
+{
+ struct clk *xtal_clk;
+ unsigned long xtal;
+ unsigned long fclk;
+ unsigned long hclk;
+ unsigned long hclk2;
+ unsigned long pclk;
+ unsigned long epll;
+ unsigned long apll;
+ unsigned long mpll;
+ unsigned int ptr;
+ u32 clkdiv0;
+
+ printk(KERN_DEBUG "%s: registering clocks\n", __func__);
+
+ clkdiv0 = __raw_readl(S3C_CLK_DIV0);
+ printk(KERN_DEBUG "%s: clkdiv0 = %08x\n", __func__, clkdiv0);
+
+ 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);
+
+ /* For now assume the mux always selects the crystal */
+ clk_ext_xtal_mux.parent = xtal_clk;
+
+ epll = s3c6400_get_epll(xtal);
+ mpll = s3c6400_get_pll(xtal, __raw_readl(S3C_MPLL_CON));
+ apll = s3c6400_get_pll(xtal, __raw_readl(S3C_APLL_CON));
+
+ fclk = mpll;
+
+ printk(KERN_INFO "S3C64XX: PLL settings, A=%ld, M=%ld, E=%ld\n",
+ apll, mpll, epll);
+
+ hclk2 = mpll / GET_DIV(clkdiv0, S3C6400_CLKDIV0_HCLK2);
+ hclk = hclk2 / GET_DIV(clkdiv0, S3C6400_CLKDIV0_HCLK);
+ pclk = hclk2 / GET_DIV(clkdiv0, S3C6400_CLKDIV0_PCLK);
+
+ printk(KERN_INFO "S3C64XX: HCLK2=%ld, HCLK=%ld, PCLK=%ld\n",
+ hclk2, hclk, pclk);
+
+ clk_fout_mpll.rate = mpll;
+ clk_fout_epll.rate = epll;
+ clk_fout_apll.rate = apll;
+
+ clk_h2.rate = hclk2;
+ clk_h.rate = hclk;
+ clk_p.rate = pclk;
+ clk_f.rate = fclk;
+
+ 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);
+}
+
+static struct clk *clks1[] __initdata = {
+ &clk_ext_xtal_mux,
+ &clk_iis_cd0,
+ &clk_iis_cd1,
+ &clk_pcm_cd,
+ &clk_mout_epll.clk,
+ &clk_mout_mpll.clk,
+ &clk_dout_mpll,
+ &clk_arm,
+};
+
+/**
+ * s3c6400_register_clocks - register clocks for s3c6400 and above
+ * @armclk_divlimit: Divisor mask for ARMCLK
+ *
+ * Register the clocks for the S3C6400 and above SoC range, such
+ * as ARMCLK and the clocks which have divider chains attached.
+ *
+ * This call does not setup the clocks, which is left to the
+ * s3c6400_setup_clocks() call which may be needed by the cpufreq
+ * or resume code to re-set the clocks if the bootloader has changed
+ * them.
+ */
+void __init s3c6400_register_clocks(unsigned armclk_divlimit)
+{
+ struct clk *clkp;
+ int ret;
+ int ptr;
+
+ armclk_mask = armclk_divlimit;
+
+ for (ptr = 0; ptr < ARRAY_SIZE(clks1); ptr++) {
+ clkp = clks1[ptr];
+ ret = s3c24xx_register_clock(clkp);
+ if (ret < 0) {
+ printk(KERN_ERR "Failed to register clock %s (%d)\n",
+ clkp->name, ret);
+ }
+ }
+
+ s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
+}
+
static struct clk *clks[] __initdata = {
&clk_ext,
&clk_epll,
+++ /dev/null
-/* linux/arch/arm/plat-s3c64xx/s3c6400-clock.c
- *
- * Copyright 2008 Openmoko, Inc.
- * Copyright 2008 Simtec Electronics
- * Ben Dooks <ben@simtec.co.uk>
- * http://armlinux.simtec.co.uk/
- *
- * S3C6400 based common clock support
- *
- * 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/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/clk.h>
-#include <linux/sysdev.h>
-#include <linux/io.h>
-
-#include <mach/hardware.h>
-#include <mach/map.h>
-
-#include <plat/cpu-freq.h>
-
-#include <mach/regs-clock.h>
-#include <plat/clock.h>
-#include <plat/clock-clksrc.h>
-#include <plat/cpu.h>
-#include <plat/pll.h>
-
-/* 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_fout_mpll clk_mpll
-#define clk_fout_epll clk_epll
-
-static struct clk clk_fout_apll = {
- .name = "fout_apll",
- .id = -1,
-};
-
-static struct clk *clk_src_apll_list[] = {
- [0] = &clk_fin_apll,
- [1] = &clk_fout_apll,
-};
-
-static struct clksrc_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,
- },
- .reg_src = { .reg = S3C_CLK_SRC, .shift = 0, .size = 1 },
- .sources = &clk_src_apll,
-};
-
-static struct clk *clk_src_epll_list[] = {
- [0] = &clk_fin_epll,
- [1] = &clk_fout_epll,
-};
-
-static struct clksrc_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,
- },
- .reg_src = { .reg = S3C_CLK_SRC, .shift = 2, .size = 1 },
- .sources = &clk_src_epll,
-};
-
-static struct clk *clk_src_mpll_list[] = {
- [0] = &clk_fin_mpll,
- [1] = &clk_fout_mpll,
-};
-
-static struct clksrc_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,
- },
- .reg_src = { .reg = S3C_CLK_SRC, .shift = 1, .size = 1 },
- .sources = &clk_src_mpll,
-};
-
-static unsigned int armclk_mask;
-
-static unsigned long s3c64xx_clk_arm_get_rate(struct clk *clk)
-{
- unsigned long rate = clk_get_rate(clk->parent);
- u32 clkdiv;
-
- /* divisor mask starts at bit0, so no need to shift */
- clkdiv = __raw_readl(S3C_CLK_DIV0) & armclk_mask;
-
- return rate / (clkdiv + 1);
-}
-
-static unsigned long s3c64xx_clk_arm_round_rate(struct clk *clk,
- unsigned long rate)
-{
- unsigned long parent = clk_get_rate(clk->parent);
- u32 div;
-
- if (parent < rate)
- return parent;
-
- div = (parent / rate) - 1;
- if (div > armclk_mask)
- div = armclk_mask;
-
- return parent / (div + 1);
-}
-
-static int s3c64xx_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 / (armclk_mask + 1))
- return -EINVAL;
-
- rate = clk_round_rate(clk, rate);
- div = clk_get_rate(clk->parent) / rate;
-
- val = __raw_readl(S3C_CLK_DIV0);
- val &= ~armclk_mask;
- val |= (div - 1);
- __raw_writel(val, S3C_CLK_DIV0);
-
- return 0;
-
-}
-
-static struct clk clk_arm = {
- .name = "armclk",
- .id = -1,
- .parent = &clk_mout_apll.clk,
- .ops = &(struct clk_ops) {
- .get_rate = s3c64xx_clk_arm_get_rate,
- .set_rate = s3c64xx_clk_arm_set_rate,
- .round_rate = s3c64xx_clk_arm_round_rate,
- },
-};
-
-static unsigned long s3c64xx_clk_doutmpll_get_rate(struct clk *clk)
-{
- unsigned long rate = clk_get_rate(clk->parent);
-
- printk(KERN_DEBUG "%s: parent is %ld\n", __func__, rate);
-
- if (__raw_readl(S3C_CLK_DIV0) & S3C6400_CLKDIV0_MPLL_MASK)
- rate /= 2;
-
- return rate;
-}
-
-static struct clk_ops clk_dout_ops = {
- .get_rate = s3c64xx_clk_doutmpll_get_rate,
-};
-
-static struct clk clk_dout_mpll = {
- .name = "dout_mpll",
- .id = -1,
- .parent = &clk_mout_mpll.clk,
- .ops = &clk_dout_ops,
-};
-
-static struct clk *clkset_spi_mmc_list[] = {
- &clk_mout_epll.clk,
- &clk_dout_mpll,
- &clk_fin_epll,
- &clk_27m,
-};
-
-static struct clksrc_sources clkset_spi_mmc = {
- .sources = clkset_spi_mmc_list,
- .nr_sources = ARRAY_SIZE(clkset_spi_mmc_list),
-};
-
-static struct clk *clkset_irda_list[] = {
- &clk_mout_epll.clk,
- &clk_dout_mpll,
- NULL,
- &clk_27m,
-};
-
-static struct clksrc_sources clkset_irda = {
- .sources = clkset_irda_list,
- .nr_sources = ARRAY_SIZE(clkset_irda_list),
-};
-
-static struct clk *clkset_uart_list[] = {
- &clk_mout_epll.clk,
- &clk_dout_mpll,
- NULL,
- NULL
-};
-
-static struct clksrc_sources clkset_uart = {
- .sources = clkset_uart_list,
- .nr_sources = ARRAY_SIZE(clkset_uart_list),
-};
-
-static struct clk *clkset_uhost_list[] = {
- &clk_48m,
- &clk_mout_epll.clk,
- &clk_dout_mpll,
- &clk_fin_epll,
-};
-
-static struct clksrc_sources clkset_uhost = {
- .sources = clkset_uhost_list,
- .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.
- *
- * Note, the JPEG clock can only be an even divider...
- *
- * The scaler and LCD clocks depend on the S3C64XX version, and also
- * have a common parent divisor so are not included here.
- */
-
-/* clocks that feed other parts of the clock source tree */
-
-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_pcm_cd = {
- .name = "pcm_cdclk",
- .id = -1,
-};
-
-static struct clk *clkset_audio0_list[] = {
- [0] = &clk_mout_epll.clk,
- [1] = &clk_dout_mpll,
- [2] = &clk_fin_epll,
- [3] = &clk_iis_cd0,
- [4] = &clk_pcm_cd,
-};
-
-static struct clksrc_sources clkset_audio0 = {
- .sources = clkset_audio0_list,
- .nr_sources = ARRAY_SIZE(clkset_audio0_list),
-};
-
-static struct clk *clkset_audio1_list[] = {
- [0] = &clk_mout_epll.clk,
- [1] = &clk_dout_mpll,
- [2] = &clk_fin_epll,
- [3] = &clk_iis_cd1,
- [4] = &clk_pcm_cd,
-};
-
-static struct clksrc_sources clkset_audio1 = {
- .sources = clkset_audio1_list,
- .nr_sources = ARRAY_SIZE(clkset_audio1_list),
-};
-
-static struct clk *clkset_camif_list[] = {
- &clk_h2,
-};
-
-static struct clksrc_sources clkset_camif = {
- .sources = clkset_camif_list,
- .nr_sources = ARRAY_SIZE(clkset_camif_list),
-};
-
-static struct clksrc_clk clksrcs[] = {
- {
- .clk = {
- .name = "mmc_bus",
- .id = 0,
- .ctrlbit = S3C_CLKCON_SCLK_MMC0,
- .enable = s3c64xx_sclk_ctrl,
- },
- .reg_src = { .reg = S3C_CLK_SRC, .shift = 18, .size = 2 },
- .reg_div = { .reg = S3C_CLK_DIV1, .shift = 0, .size = 4 },
- .sources = &clkset_spi_mmc,
- }, {
- .clk = {
- .name = "mmc_bus",
- .id = 1,
- .ctrlbit = S3C_CLKCON_SCLK_MMC1,
- .enable = s3c64xx_sclk_ctrl,
- },
- .reg_src = { .reg = S3C_CLK_SRC, .shift = 20, .size = 2 },
- .reg_div = { .reg = S3C_CLK_DIV1, .shift = 4, .size = 4 },
- .sources = &clkset_spi_mmc,
- }, {
- .clk = {
- .name = "mmc_bus",
- .id = 2,
- .ctrlbit = S3C_CLKCON_SCLK_MMC2,
- .enable = s3c64xx_sclk_ctrl,
- },
- .reg_src = { .reg = S3C_CLK_SRC, .shift = 22, .size = 2 },
- .reg_div = { .reg = S3C_CLK_DIV1, .shift = 8, .size = 4 },
- .sources = &clkset_spi_mmc,
- }, {
- .clk = {
- .name = "usb-bus-host",
- .id = -1,
- .ctrlbit = S3C_CLKCON_SCLK_UHOST,
- .enable = s3c64xx_sclk_ctrl,
- },
- .reg_src = { .reg = S3C_CLK_SRC, .shift = 5, .size = 2 },
- .reg_div = { .reg = S3C_CLK_DIV1, .shift = 20, .size = 4 },
- .sources = &clkset_uhost,
- }, {
- .clk = {
- .name = "uclk1",
- .id = -1,
- .ctrlbit = S3C_CLKCON_SCLK_UART,
- .enable = s3c64xx_sclk_ctrl,
- },
- .reg_src = { .reg = S3C_CLK_SRC, .shift = 13, .size = 1 },
- .reg_div = { .reg = S3C_CLK_DIV2, .shift = 16, .size = 4 },
- .sources = &clkset_uart,
- }, {
-/* Where does UCLK0 come from? */
- .clk = {
- .name = "spi-bus",
- .id = 0,
- .ctrlbit = S3C_CLKCON_SCLK_SPI0,
- .enable = s3c64xx_sclk_ctrl,
- },
- .reg_src = { .reg = S3C_CLK_SRC, .shift = 14, .size = 2 },
- .reg_div = { .reg = S3C_CLK_DIV2, .shift = 0, .size = 4 },
- .sources = &clkset_spi_mmc,
- }, {
- .clk = {
- .name = "spi-bus",
- .id = 1,
- .ctrlbit = S3C_CLKCON_SCLK_SPI1,
- .enable = s3c64xx_sclk_ctrl,
- },
- .reg_src = { .reg = S3C_CLK_SRC, .shift = 16, .size = 2 },
- .reg_div = { .reg = S3C_CLK_DIV2, .shift = 4, .size = 4 },
- .sources = &clkset_spi_mmc,
- }, {
- .clk = {
- .name = "audio-bus",
- .id = 0,
- .ctrlbit = S3C_CLKCON_SCLK_AUDIO0,
- .enable = s3c64xx_sclk_ctrl,
- },
- .reg_src = { .reg = S3C_CLK_SRC, .shift = 7, .size = 3 },
- .reg_div = { .reg = S3C_CLK_DIV2, .shift = 8, .size = 4 },
- .sources = &clkset_audio0,
- }, {
- .clk = {
- .name = "audio-bus",
- .id = 1,
- .ctrlbit = S3C_CLKCON_SCLK_AUDIO1,
- .enable = s3c64xx_sclk_ctrl,
- },
- .reg_src = { .reg = S3C_CLK_SRC, .shift = 10, .size = 3 },
- .reg_div = { .reg = S3C_CLK_DIV2, .shift = 12, .size = 4 },
- .sources = &clkset_audio1,
- }, {
- .clk = {
- .name = "irda-bus",
- .id = 0,
- .ctrlbit = S3C_CLKCON_SCLK_IRDA,
- .enable = s3c64xx_sclk_ctrl,
- },
- .reg_src = { .reg = S3C_CLK_SRC, .shift = 24, .size = 2 },
- .reg_div = { .reg = S3C_CLK_DIV2, .shift = 20, .size = 4 },
- .sources = &clkset_irda,
- }, {
- .clk = {
- .name = "camera",
- .id = -1,
- .ctrlbit = S3C_CLKCON_SCLK_CAM,
- .enable = s3c64xx_sclk_ctrl,
- },
- .reg_div = { .reg = S3C_CLK_DIV0, .shift = 20, .size = 4 },
- .reg_src = { .reg = NULL, .shift = 0, .size = 0 },
- .sources = &clkset_camif,
- },
-};
-
-/* Clock initialisation code */
-
-static struct clksrc_clk *init_parents[] = {
- &clk_mout_apll,
- &clk_mout_epll,
- &clk_mout_mpll,
-};
-
-#define GET_DIV(clk, field) ((((clk) & field##_MASK) >> field##_SHIFT) + 1)
-
-void __init_or_cpufreq s3c6400_setup_clocks(void)
-{
- struct clk *xtal_clk;
- unsigned long xtal;
- unsigned long fclk;
- unsigned long hclk;
- unsigned long hclk2;
- unsigned long pclk;
- unsigned long epll;
- unsigned long apll;
- unsigned long mpll;
- unsigned int ptr;
- u32 clkdiv0;
-
- printk(KERN_DEBUG "%s: registering clocks\n", __func__);
-
- clkdiv0 = __raw_readl(S3C_CLK_DIV0);
- printk(KERN_DEBUG "%s: clkdiv0 = %08x\n", __func__, clkdiv0);
-
- 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);
-
- /* For now assume the mux always selects the crystal */
- clk_ext_xtal_mux.parent = xtal_clk;
-
- epll = s3c6400_get_epll(xtal);
- mpll = s3c6400_get_pll(xtal, __raw_readl(S3C_MPLL_CON));
- apll = s3c6400_get_pll(xtal, __raw_readl(S3C_APLL_CON));
-
- fclk = mpll;
-
- printk(KERN_INFO "S3C64XX: PLL settings, A=%ld, M=%ld, E=%ld\n",
- apll, mpll, epll);
-
- hclk2 = mpll / GET_DIV(clkdiv0, S3C6400_CLKDIV0_HCLK2);
- hclk = hclk2 / GET_DIV(clkdiv0, S3C6400_CLKDIV0_HCLK);
- pclk = hclk2 / GET_DIV(clkdiv0, S3C6400_CLKDIV0_PCLK);
-
- printk(KERN_INFO "S3C64XX: HCLK2=%ld, HCLK=%ld, PCLK=%ld\n",
- hclk2, hclk, pclk);
-
- clk_fout_mpll.rate = mpll;
- clk_fout_epll.rate = epll;
- clk_fout_apll.rate = apll;
-
- clk_h2.rate = hclk2;
- clk_h.rate = hclk;
- clk_p.rate = pclk;
- clk_f.rate = fclk;
-
- 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);
-}
-
-static struct clk *clks[] __initdata = {
- &clk_ext_xtal_mux,
- &clk_iis_cd0,
- &clk_iis_cd1,
- &clk_pcm_cd,
- &clk_mout_epll.clk,
- &clk_mout_mpll.clk,
- &clk_dout_mpll,
- &clk_arm,
-};
-
-/**
- * s3c6400_register_clocks - register clocks for s3c6400 and above
- * @armclk_divlimit: Divisor mask for ARMCLK
- *
- * Register the clocks for the S3C6400 and above SoC range, such
- * as ARMCLK and the clocks which have divider chains attached.
- *
- * This call does not setup the clocks, which is left to the
- * s3c6400_setup_clocks() call which may be needed by the cpufreq
- * or resume code to re-set the clocks if the bootloader has changed
- * them.
- */
-void __init s3c6400_register_clocks(unsigned armclk_divlimit)
-{
- struct clk *clkp;
- int ret;
- int ptr;
-
- armclk_mask = armclk_divlimit;
-
- 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);
- }
- }
-
- s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
-}
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff