From: Ben Dooks <ben-linux@fluff.org>
To: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org
Cc: Ben Dooks <ben-linux@fluff.org>
Subject: [PATCH 04/15] ARM: SAMSUNG: Move S3C6400 PLL code to <plat/pll.h> for re-use
Date: Wed, 12 May 2010 03:35:55 +0100 [thread overview]
Message-ID: <1273631766-15693-4-git-send-email-ben-linux@fluff.org> (raw)
In-Reply-To: <1273631766-15693-1-git-send-email-ben-linux@fluff.org>
The S3C6400 EPLL code matches the S3C2416 and compatible SoCs, so move
it from mach-s3c64xx into <plat/pll.h> for easy reuse.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
---
arch/arm/mach-s3c64xx/include/mach/pll.h | 35 +---------------
arch/arm/plat-samsung/include/plat/pll6553x.h | 51 +++++++++++++++++++++++++
2 files changed, 54 insertions(+), 32 deletions(-)
create mode 100644 arch/arm/plat-samsung/include/plat/pll6553x.h
diff --git a/arch/arm/mach-s3c64xx/include/mach/pll.h b/arch/arm/mach-s3c64xx/include/mach/pll.h
index 90bbd72..5ef0bb6 100644
--- a/arch/arm/mach-s3c64xx/include/mach/pll.h
+++ b/arch/arm/mach-s3c64xx/include/mach/pll.h
@@ -20,6 +20,7 @@
#define S3C6400_PLL_SDIV_SHIFT (0)
#include <asm/div64.h>
+#include <plat/pll6553x.h>
static inline unsigned long s3c6400_get_pll(unsigned long baseclk,
u32 pllcon)
@@ -37,38 +38,8 @@ static inline unsigned long s3c6400_get_pll(unsigned long baseclk,
return (unsigned long)fvco;
}
-#define S3C6400_EPLL_MDIV_MASK ((1 << (23-16)) - 1)
-#define S3C6400_EPLL_PDIV_MASK ((1 << (13-8)) - 1)
-#define S3C6400_EPLL_SDIV_MASK ((1 << (2-0)) - 1)
-#define S3C6400_EPLL_MDIV_SHIFT (16)
-#define S3C6400_EPLL_PDIV_SHIFT (8)
-#define S3C6400_EPLL_SDIV_SHIFT (0)
-#define S3C6400_EPLL_KDIV_MASK (0xffff)
-
static inline unsigned long s3c6400_get_epll(unsigned long baseclk)
{
- unsigned long result;
- u32 epll0 = __raw_readl(S3C_EPLL_CON0);
- u32 epll1 = __raw_readl(S3C_EPLL_CON1);
- u32 mdiv, pdiv, sdiv, kdiv;
- u64 tmp;
-
- mdiv = (epll0 >> S3C6400_EPLL_MDIV_SHIFT) & S3C6400_EPLL_MDIV_MASK;
- pdiv = (epll0 >> S3C6400_EPLL_PDIV_SHIFT) & S3C6400_EPLL_PDIV_MASK;
- sdiv = (epll0 >> S3C6400_EPLL_SDIV_SHIFT) & S3C6400_EPLL_SDIV_MASK;
- kdiv = epll1 & S3C6400_EPLL_KDIV_MASK;
-
- /* We need to multiple baseclk by mdiv (the integer part) and kdiv
- * which is in 2^16ths, so shift mdiv up (does not overflow) and
- * add kdiv before multiplying. The use of tmp is to avoid any
- * overflows before shifting bac down into result when multipling
- * by the mdiv and kdiv pair.
- */
-
- tmp = baseclk;
- tmp *= (mdiv << 16) + kdiv;
- do_div(tmp, (pdiv << sdiv));
- result = tmp >> 16;
-
- return result;
+ return s3c_get_pll6553x(baseclk, __raw_readl(S3C_EPLL_CON0),
+ __raw_readl(S3C_EPLL_CON1));
}
diff --git a/arch/arm/plat-samsung/include/plat/pll6553x.h b/arch/arm/plat-samsung/include/plat/pll6553x.h
new file mode 100644
index 0000000..b8b7e1d
--- /dev/null
+++ b/arch/arm/plat-samsung/include/plat/pll6553x.h
@@ -0,0 +1,51 @@
+/* arch/arm/plat-samsung/include/plat/pll6553x.h
+ * partially from arch/arm/mach-s3c64xx/include/mach/pll.h
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * Samsung PLL6553x PLL code
+ *
+ * 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.
+*/
+
+/* S3C6400 and compatible (S3C2416, etc.) EPLL code */
+
+#define PLL6553X_MDIV_MASK ((1 << (23-16)) - 1)
+#define PLL6553X_PDIV_MASK ((1 << (13-8)) - 1)
+#define PLL6553X_SDIV_MASK ((1 << (2-0)) - 1)
+#define PLL6553X_MDIV_SHIFT (16)
+#define PLL6553X_PDIV_SHIFT (8)
+#define PLL6553X_SDIV_SHIFT (0)
+#define PLL6553X_KDIV_MASK (0xffff)
+
+static inline unsigned long s3c_get_pll6553x(unsigned long baseclk,
+ u32 pll0, u32 pll1)
+{
+ unsigned long result;
+ u32 mdiv, pdiv, sdiv, kdiv;
+ u64 tmp;
+
+ mdiv = (pll0 >> PLL6553X_MDIV_SHIFT) & PLL6553X_MDIV_MASK;
+ pdiv = (pll0 >> PLL6553X_PDIV_SHIFT) & PLL6553X_PDIV_MASK;
+ sdiv = (pll0 >> PLL6553X_SDIV_SHIFT) & PLL6553X_SDIV_MASK;
+ kdiv = pll1 & PLL6553X_KDIV_MASK;
+
+ /* We need to multiple baseclk by mdiv (the integer part) and kdiv
+ * which is in 2^16ths, so shift mdiv up (does not overflow) and
+ * add kdiv before multiplying. The use of tmp is to avoid any
+ * overflows before shifting bac down into result when multipling
+ * by the mdiv and kdiv pair.
+ */
+
+ tmp = baseclk;
+ tmp *= (mdiv << 16) + kdiv;
+ do_div(tmp, (pdiv << sdiv));
+ result = tmp >> 16;
+
+ return result;
+}
--
1.6.3.3
WARNING: multiple messages have this Message-ID (diff)
From: ben-linux@fluff.org (Ben Dooks)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 04/15] ARM: SAMSUNG: Move S3C6400 PLL code to <plat/pll.h> for re-use
Date: Wed, 12 May 2010 03:35:55 +0100 [thread overview]
Message-ID: <1273631766-15693-4-git-send-email-ben-linux@fluff.org> (raw)
In-Reply-To: <1273631766-15693-1-git-send-email-ben-linux@fluff.org>
The S3C6400 EPLL code matches the S3C2416 and compatible SoCs, so move
it from mach-s3c64xx into <plat/pll.h> for easy reuse.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
---
arch/arm/mach-s3c64xx/include/mach/pll.h | 35 +---------------
arch/arm/plat-samsung/include/plat/pll6553x.h | 51 +++++++++++++++++++++++++
2 files changed, 54 insertions(+), 32 deletions(-)
create mode 100644 arch/arm/plat-samsung/include/plat/pll6553x.h
diff --git a/arch/arm/mach-s3c64xx/include/mach/pll.h b/arch/arm/mach-s3c64xx/include/mach/pll.h
index 90bbd72..5ef0bb6 100644
--- a/arch/arm/mach-s3c64xx/include/mach/pll.h
+++ b/arch/arm/mach-s3c64xx/include/mach/pll.h
@@ -20,6 +20,7 @@
#define S3C6400_PLL_SDIV_SHIFT (0)
#include <asm/div64.h>
+#include <plat/pll6553x.h>
static inline unsigned long s3c6400_get_pll(unsigned long baseclk,
u32 pllcon)
@@ -37,38 +38,8 @@ static inline unsigned long s3c6400_get_pll(unsigned long baseclk,
return (unsigned long)fvco;
}
-#define S3C6400_EPLL_MDIV_MASK ((1 << (23-16)) - 1)
-#define S3C6400_EPLL_PDIV_MASK ((1 << (13-8)) - 1)
-#define S3C6400_EPLL_SDIV_MASK ((1 << (2-0)) - 1)
-#define S3C6400_EPLL_MDIV_SHIFT (16)
-#define S3C6400_EPLL_PDIV_SHIFT (8)
-#define S3C6400_EPLL_SDIV_SHIFT (0)
-#define S3C6400_EPLL_KDIV_MASK (0xffff)
-
static inline unsigned long s3c6400_get_epll(unsigned long baseclk)
{
- unsigned long result;
- u32 epll0 = __raw_readl(S3C_EPLL_CON0);
- u32 epll1 = __raw_readl(S3C_EPLL_CON1);
- u32 mdiv, pdiv, sdiv, kdiv;
- u64 tmp;
-
- mdiv = (epll0 >> S3C6400_EPLL_MDIV_SHIFT) & S3C6400_EPLL_MDIV_MASK;
- pdiv = (epll0 >> S3C6400_EPLL_PDIV_SHIFT) & S3C6400_EPLL_PDIV_MASK;
- sdiv = (epll0 >> S3C6400_EPLL_SDIV_SHIFT) & S3C6400_EPLL_SDIV_MASK;
- kdiv = epll1 & S3C6400_EPLL_KDIV_MASK;
-
- /* We need to multiple baseclk by mdiv (the integer part) and kdiv
- * which is in 2^16ths, so shift mdiv up (does not overflow) and
- * add kdiv before multiplying. The use of tmp is to avoid any
- * overflows before shifting bac down into result when multipling
- * by the mdiv and kdiv pair.
- */
-
- tmp = baseclk;
- tmp *= (mdiv << 16) + kdiv;
- do_div(tmp, (pdiv << sdiv));
- result = tmp >> 16;
-
- return result;
+ return s3c_get_pll6553x(baseclk, __raw_readl(S3C_EPLL_CON0),
+ __raw_readl(S3C_EPLL_CON1));
}
diff --git a/arch/arm/plat-samsung/include/plat/pll6553x.h b/arch/arm/plat-samsung/include/plat/pll6553x.h
new file mode 100644
index 0000000..b8b7e1d
--- /dev/null
+++ b/arch/arm/plat-samsung/include/plat/pll6553x.h
@@ -0,0 +1,51 @@
+/* arch/arm/plat-samsung/include/plat/pll6553x.h
+ * partially from arch/arm/mach-s3c64xx/include/mach/pll.h
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * Samsung PLL6553x PLL code
+ *
+ * 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.
+*/
+
+/* S3C6400 and compatible (S3C2416, etc.) EPLL code */
+
+#define PLL6553X_MDIV_MASK ((1 << (23-16)) - 1)
+#define PLL6553X_PDIV_MASK ((1 << (13-8)) - 1)
+#define PLL6553X_SDIV_MASK ((1 << (2-0)) - 1)
+#define PLL6553X_MDIV_SHIFT (16)
+#define PLL6553X_PDIV_SHIFT (8)
+#define PLL6553X_SDIV_SHIFT (0)
+#define PLL6553X_KDIV_MASK (0xffff)
+
+static inline unsigned long s3c_get_pll6553x(unsigned long baseclk,
+ u32 pll0, u32 pll1)
+{
+ unsigned long result;
+ u32 mdiv, pdiv, sdiv, kdiv;
+ u64 tmp;
+
+ mdiv = (pll0 >> PLL6553X_MDIV_SHIFT) & PLL6553X_MDIV_MASK;
+ pdiv = (pll0 >> PLL6553X_PDIV_SHIFT) & PLL6553X_PDIV_MASK;
+ sdiv = (pll0 >> PLL6553X_SDIV_SHIFT) & PLL6553X_SDIV_MASK;
+ kdiv = pll1 & PLL6553X_KDIV_MASK;
+
+ /* We need to multiple baseclk by mdiv (the integer part) and kdiv
+ * which is in 2^16ths, so shift mdiv up (does not overflow) and
+ * add kdiv before multiplying. The use of tmp is to avoid any
+ * overflows before shifting bac down into result when multipling
+ * by the mdiv and kdiv pair.
+ */
+
+ tmp = baseclk;
+ tmp *= (mdiv << 16) + kdiv;
+ do_div(tmp, (pdiv << sdiv));
+ result = tmp >> 16;
+
+ return result;
+}
--
1.6.3.3
next prev parent reply other threads:[~2010-05-12 2:36 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-12 2:35 [PATCH 01/15] ARM: S3C: Add S3C2416 detection to uncompress code Ben Dooks
2010-05-12 2:35 ` Ben Dooks
2010-05-12 2:35 ` [PATCH 02/15] serial: Use s3c2440 driver for S3C2416 SoC Ben Dooks
2010-05-12 2:35 ` Ben Dooks
2010-05-12 2:35 ` [PATCH 03/15] ARM: S3C2416: Add S3C2416-specific registers definitions Ben Dooks
2010-05-12 2:35 ` Ben Dooks
2010-05-12 2:35 ` Ben Dooks [this message]
2010-05-12 2:35 ` [PATCH 04/15] ARM: SAMSUNG: Move S3C6400 PLL code to <plat/pll.h> for re-use Ben Dooks
2010-05-12 2:35 ` [PATCH 05/15] ARM: SAMSUNG: Add s3c_disable_clocks() and tidy init+disable usage Ben Dooks
2010-05-12 2:35 ` Ben Dooks
2010-05-12 2:35 ` [PATCH 06/15] ARM: S3C2416: Add arch support Ben Dooks
2010-05-12 2:35 ` Ben Dooks
2010-05-12 2:35 ` [PATCH 07/15] ARM: S3C2416: Add initial support of SMDK2416 Ben Dooks
2010-05-12 2:35 ` Ben Dooks
2010-05-12 2:35 ` [PATCH 08/15] ARM: S3C24XX: Identify S3C2416 if S3C2412/S3C2413 built in Ben Dooks
2010-05-12 2:35 ` Ben Dooks
2010-05-12 2:36 ` [PATCH 09/15] ARM: S3C2443: Move parts of the clock code to common clock file Ben Dooks
2010-05-12 2:36 ` Ben Dooks
2010-05-12 2:36 ` [PATCH 10/15] ARM: S3C2416: Add basic clock support Ben Dooks
2010-05-12 2:36 ` Ben Dooks
2010-05-12 2:36 ` [PATCH 11/15] ARM: S3C2416: Add support for second HSMMC channel Ben Dooks
2010-05-12 2:36 ` Ben Dooks
2010-06-17 19:05 ` Darius Augulis
2010-06-17 19:05 ` Darius Augulis
2010-06-17 19:19 ` Yauhen Kharuzhy
2010-06-17 19:19 ` Yauhen Kharuzhy
2010-06-18 18:30 ` Darius Augulis
2010-06-18 18:30 ` Darius Augulis
2010-05-12 2:36 ` [PATCH 12/15] ARM: S3C2416: Add support for OHCI on SMDK2416 Ben Dooks
2010-05-12 2:36 ` Ben Dooks
2010-05-12 2:36 ` [PATCH 13/15] ARM: S3C2416: Use s3c2440 style i2c controller Ben Dooks
2010-05-12 2:36 ` Ben Dooks
2010-05-12 2:36 ` [PATCH 14/15] ARM: S3C2413: Update GPIO pull-up support Ben Dooks
2010-05-12 2:36 ` Ben Dooks
2010-05-12 2:36 ` [PATCH 15/15] ARM: SAMSUNG: Update S3C2416 entry with S3C2450 Ben Dooks
2010-05-12 2:36 ` Ben Dooks
2010-05-12 2:38 ` [PATCH 01/15] ARM: S3C: Add S3C2416 detection to uncompress code Ben Dooks
2010-05-12 2:38 ` Ben Dooks
2010-05-12 7:25 ` Yauhen Kharuzhy
2010-05-12 7:25 ` Yauhen Kharuzhy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1273631766-15693-4-git-send-email-ben-linux@fluff.org \
--to=ben-linux@fluff.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-samsung-soc@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.