Merge branch 'next/devel2' of git://git.linaro.org/people/arnd/arm-soc

* 'next/devel2' of git://git.linaro.org/people/arnd/arm-soc: (30 commits)
  ARM: mmp: register internal sram bank
  ARM: mmp: register audio sram bank
  ARM: mmp: add sram allocator
  gpio/samsung: Complain loudly if we don't know the SoC
  ARM: S3C64XX: Fix SoC identification for S3C64xx devices
  ARM: S3C2443: Remove redundant s3c_register_clocks call for init_clocks
  ARM: S3C24XX: Add devname for hsmmc1 pclk
  ARM: S3C24XX: use clk_get_rate to init fclk in common_setup_clocks
  ARM: S3C2443: Accommodate cpufreq frequency scheme in armdiv
  ARM: S3C2443: handle unset armdiv values gracefully
  ARM: S3C2443: Add get_rate operation for clk_armdiv
  ARM: S3C2416: Add comment describing the armdiv/armclk
  ARM: S3C2443: Move clk_arm and clk_armdiv to common code
  ARM: S3C24XX: Add infrastructure to transmit armdiv to common code
  ARM: S3C2416: Add armdiv_mask constant
  ARM: EXYNOS4: Add support for M-5MOLS camera on Nuri board
  ARM: EXYNOS4: Enable MFC on ORIGEN
  ARM: SAMSUNG: Add support s3c2416-adc for S3C2416/S3C2450
  ARM: SAMSUNG: Add support s3c2443-adc for S3C2443
  ARM: SAMSUNG: Allow overriding of adc device name for S3C24XX
  ...

1 files changed, 130 insertions, 5 deletions

diff --git a/arch/arm/plat-s3c24xx/s3c2443-clock.c b/arch/arm/plat-s3c24xx/s3c2443-clock.c
index 07a4c81587ac..5a21b15b2a97 100644
--- a/arch/arm/plat-s3c24xx/s3c2443-clock.c
+++ b/arch/arm/plat-s3c24xx/s3c2443-clock.c
@@ -160,6 +160,124 @@ static struct clk clk_prediv = {
         },
 };
 
+/* armdiv
+ *
+ * this clock is sourced from msysclk and can have a number of
+ * divider values applied to it to then be fed into armclk.
+*/
+
+static unsigned int *armdiv;
+static int nr_armdiv;
+static int armdivmask;
+
+static unsigned long s3c2443_armclk_roundrate(struct clk *clk,
+                                              unsigned long rate)
+{
+        unsigned long parent = clk_get_rate(clk->parent);
+        unsigned long calc;
+        unsigned best = 256; /* bigger than any value */
+        unsigned div;
+        int ptr;
+
+        if (!nr_armdiv)
+                return -EINVAL;
+
+        for (ptr = 0; ptr < nr_armdiv; ptr++) {
+                div = armdiv[ptr];
+                if (div) {
+                        /* cpufreq provides 266mhz as 266666000 not 266666666 */
+                        calc = (parent / div / 1000) * 1000;
+                        if (calc <= rate && div < best)
+                                best = div;
+                }
+        }
+
+        return parent / best;
+}
+
+static unsigned long s3c2443_armclk_getrate(struct clk *clk)
+{
+        unsigned long rate = clk_get_rate(clk->parent);
+        unsigned long clkcon0;
+        int val;
+
+        if (!nr_armdiv || !armdivmask)
+                return -EINVAL;
+
+        clkcon0 = __raw_readl(S3C2443_CLKDIV0);
+        clkcon0 &= armdivmask;
+        val = clkcon0 >> S3C2443_CLKDIV0_ARMDIV_SHIFT;
+
+        return rate / armdiv[val];
+}
+
+static int s3c2443_armclk_setrate(struct clk *clk, unsigned long rate)
+{
+        unsigned long parent = clk_get_rate(clk->parent);
+        unsigned long calc;
+        unsigned div;
+        unsigned best = 256; /* bigger than any value */
+        int ptr;
+        int val = -1;
+
+        if (!nr_armdiv || !armdivmask)
+                return -EINVAL;
+
+        for (ptr = 0; ptr < nr_armdiv; ptr++) {
+                div = armdiv[ptr];
+                if (div) {
+                        /* cpufreq provides 266mhz as 266666000 not 266666666 */
+                        calc = (parent / div / 1000) * 1000;
+                        if (calc <= rate && div < best) {
+                                best = div;
+                                val = ptr;
+                        }
+                }
+        }
+
+        if (val >= 0) {
+                unsigned long clkcon0;
+
+                clkcon0 = __raw_readl(S3C2443_CLKDIV0);
+                clkcon0 &= ~armdivmask;
+                clkcon0 |= val << S3C2443_CLKDIV0_ARMDIV_SHIFT;
+                __raw_writel(clkcon0, S3C2443_CLKDIV0);
+        }
+
+        return (val == -1) ? -EINVAL : 0;
+}
+
+static struct clk clk_armdiv = {
+        .name           = "armdiv",
+        .parent         = &clk_msysclk.clk,
+        .ops            = &(struct clk_ops) {
+                .round_rate = s3c2443_armclk_roundrate,
+                .get_rate = s3c2443_armclk_getrate,
+                .set_rate = s3c2443_armclk_setrate,
+        },
+};
+
+/* armclk
+ *
+ * this is the clock fed into the ARM core itself, from armdiv or from hclk.
+ */
+
+static struct clk *clk_arm_sources[] = {
+        [0] = &clk_armdiv,
+        [1] = &clk_h,
+};
+
+static struct clksrc_clk clk_arm = {
+        .clk    = {
+                .name           = "armclk",
+        },
+        .sources = &(struct clksrc_sources) {
+                .sources = clk_arm_sources,
+                .nr_sources = ARRAY_SIZE(clk_arm_sources),
+        },
+        .reg_src = { .reg = S3C2443_CLKDIV0, .size = 1, .shift = 13 },
+};
+
 /* usbhost
  *
  * usb host bus-clock, usually 48MHz to provide USB bus clock timing
@@ -308,6 +426,7 @@ static struct clk init_clocks[] = {
                 .ctrlbit        = S3C2443_HCLKCON_DMA5,
         }, {
                 .name           = "hsmmc",
+                .devname        = "s3c-sdhci.1",
                 .parent         = &clk_h,
                 .enable         = s3c2443_clkcon_enable_h,
                 .ctrlbit        = S3C2443_HCLKCON_HSMMC,
@@ -402,8 +521,7 @@ static inline unsigned long s3c2443_get_hdiv(unsigned long clkcon0)
 
 /* EPLLCON compatible enough to get on/off information */
 
-void __init_or_cpufreq s3c2443_common_setup_clocks(pll_fn get_mpll,
-                                                   fdiv_fn get_fdiv)
+void __init_or_cpufreq s3c2443_common_setup_clocks(pll_fn get_mpll)
 {
         unsigned long epllcon = __raw_readl(S3C2443_EPLLCON);
         unsigned long mpllcon = __raw_readl(S3C2443_MPLLCON);
@@ -423,7 +541,7 @@ void __init_or_cpufreq s3c2443_common_setup_clocks(pll_fn get_mpll,
         pll = get_mpll(mpllcon, xtal);
         clk_msysclk.clk.rate = pll;
 
-        fclk = pll / get_fdiv(clkdiv0);
+        fclk = clk_get_rate(&clk_armdiv);
         hclk = s3c2443_prediv_getrate(&clk_prediv);
         hclk /= s3c2443_get_hdiv(clkdiv0);
         pclk = hclk / ((clkdiv0 & S3C2443_CLKDIV0_HALF_PCLK) ? 2 : 1);
@@ -458,6 +576,7 @@ static struct clk *clks[] __initdata = {
         &clk_ext,
         &clk_epll,
         &clk_usb_bus,
+        &clk_armdiv,
 };
 
 static struct clksrc_clk *clksrcs[] __initdata = {
@@ -467,13 +586,19 @@ static struct clksrc_clk *clksrcs[] __initdata = {
         &clk_epllref,
         &clk_esysclk,
         &clk_msysclk,
+        &clk_arm,
 };
 
 void __init s3c2443_common_init_clocks(int xtal, pll_fn get_mpll,
-                                       fdiv_fn get_fdiv)
+                                       unsigned int *divs, int nr_divs,
+                                       int divmask)
 {
         int ptr;
 
+        armdiv = divs;
+        nr_armdiv = nr_divs;
+        armdivmask = divmask;
+
         /* s3c2443 parents h and p clocks from prediv */
         clk_h.parent = &clk_prediv;
         clk_p.parent = &clk_prediv;
@@ -494,5 +619,5 @@ void __init s3c2443_common_init_clocks(int xtal, pll_fn get_mpll,
         s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
         s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
 
-        s3c2443_common_setup_clocks(get_mpll, get_fdiv);
+        s3c2443_common_setup_clocks(get_mpll);
 }