OMAP clock: drop RATE_FIXED clock flag

The RATE_FIXED clock flag is pointless.  In the OMAP1 clock code, it
simply causes the omap1_clk_round_rate() function to return the
current rate of the clock.  omap1_clk_round_rate(), however, should
never be called for a fixed-rate clock, since none of these clocks
have a .round_rate function pointer set in their struct clk records.
Similarly, in the OMAP2+ clock code, the RATE_FIXED flag just causes
the clock code to emit a warning if the OMAP clock maintainer was
foolish enough to add a .round_rate function pointer to a fixed-rate
clock.  "Doctor, it hurts when I pretend that a fixed-rate clock is
rate-changeable."  "Then don't pretend that a fixed-rate clock is
rate-changeable."  It has no functional value.  This patch drops the
RATE_FIXED clock flag, removing it from all clocks that are so marked.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Richard Woodruff <r-woodruff2@ti.com>

2 files changed, 10 insertions, 20 deletions

diff --git a/arch/arm/mach-omap1/clock.c b/arch/arm/mach-omap1/clock.c
index 3e052f6..0ba044d 100644
--- a/arch/arm/mach-omap1/clock.c
+++ b/arch/arm/mach-omap1/clock.c
@@ -1,7 +1,7 @@
 /*
  *  linux/arch/arm/mach-omap1/clock.c
  *
- *  Copyright (C) 2004 - 2005, 2009 Nokia corporation
+ *  Copyright (C) 2004 - 2005, 2009-2010 Nokia Corporation
  *  Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
  *
  *  Modified to use omap shared clock framework by
@@ -571,9 +571,6 @@ const struct clkops clkops_uart = {
 
 long omap1_clk_round_rate(struct clk *clk, unsigned long rate)
 {
-	if (clk->flags & RATE_FIXED)
-		return clk->rate;
-
 	if (clk->round_rate != NULL)
 		return clk->round_rate(clk, rate);
 
diff --git a/arch/arm/mach-omap1/clock_data.c b/arch/arm/mach-omap1/clock_data.c
index cea91cd..8b1d14d 100644
--- a/arch/arm/mach-omap1/clock_data.c
+++ b/arch/arm/mach-omap1/clock_data.c
@@ -1,7 +1,7 @@
 /*
  *  linux/arch/arm/mach-omap1/clock_data.c
  *
- *  Copyright (C) 2004 - 2005, 2009 Nokia corporation
+ *  Copyright (C) 2004 - 2005, 2009-2010 Nokia Corporation
  *  Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
  *  Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc
  *
@@ -31,7 +31,6 @@
 static struct clk dummy_ck = {
 	.name	= "dummy",
 	.ops	= &clkops_dummy,
-	.flags	= RATE_FIXED,
 };
 
 static struct clk ck_ref = {
@@ -389,8 +388,7 @@ static struct uart_clk uart1_16xx = {
 		/* Direct from ULPD, no real parent */
 		.parent		= &armper_ck.clk,
 		.rate		= 48000000,
-		.flags		= RATE_FIXED | ENABLE_REG_32BIT |
-				  CLOCK_NO_IDLE_PARENT,
+		.flags		= ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 		.enable_reg	= OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 		.enable_bit	= 29,
 	},
@@ -430,8 +428,7 @@ static struct uart_clk uart3_16xx = {
 		/* Direct from ULPD, no real parent */
 		.parent		= &armper_ck.clk,
 		.rate		= 48000000,
-		.flags		= RATE_FIXED | ENABLE_REG_32BIT |
-				  CLOCK_NO_IDLE_PARENT,
+		.flags		= ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 		.enable_reg	= OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 		.enable_bit	= 31,
 	},
@@ -443,7 +440,7 @@ static struct clk usb_clko = {	/* 6 MHz output on W4_USB_CLKO */
 	.ops		= &clkops_generic,
 	/* Direct from ULPD, no parent */
 	.rate		= 6000000,
-	.flags		= RATE_FIXED | ENABLE_REG_32BIT,
+	.flags		= ENABLE_REG_32BIT,
 	.enable_reg	= OMAP1_IO_ADDRESS(ULPD_CLOCK_CTRL),
 	.enable_bit	= USB_MCLK_EN_BIT,
 };
@@ -453,7 +450,7 @@ static struct clk usb_hhc_ck1510 = {
 	.ops		= &clkops_generic,
 	/* Direct from ULPD, no parent */
 	.rate		= 48000000, /* Actually 2 clocks, 12MHz and 48MHz */
-	.flags		= RATE_FIXED | ENABLE_REG_32BIT,
+	.flags		= ENABLE_REG_32BIT,
 	.enable_reg	= OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 	.enable_bit	= USB_HOST_HHC_UHOST_EN,
 };
@@ -464,7 +461,7 @@ static struct clk usb_hhc_ck16xx = {
 	/* Direct from ULPD, no parent */
 	.rate		= 48000000,
 	/* OTG_SYSCON_2.OTG_PADEN == 0 (not 1510-compatible) */
-	.flags		= RATE_FIXED | ENABLE_REG_32BIT,
+	.flags		= ENABLE_REG_32BIT,
 	.enable_reg	= OMAP1_IO_ADDRESS(OTG_BASE + 0x08), /* OTG_SYSCON_2 */
 	.enable_bit	= 8 /* UHOST_EN */,
 };
@@ -474,7 +471,6 @@ static struct clk usb_dc_ck = {
 	.ops		= &clkops_generic,
 	/* Direct from ULPD, no parent */
 	.rate		= 48000000,
-	.flags		= RATE_FIXED,
 	.enable_reg	= OMAP1_IO_ADDRESS(SOFT_REQ_REG),
 	.enable_bit	= 4,
 };
@@ -484,7 +480,6 @@ static struct clk usb_dc_ck7xx = {
 	.ops		= &clkops_generic,
 	/* Direct from ULPD, no parent */
 	.rate		= 48000000,
-	.flags		= RATE_FIXED,
 	.enable_reg	= OMAP1_IO_ADDRESS(SOFT_REQ_REG),
 	.enable_bit	= 8,
 };
@@ -494,7 +489,6 @@ static struct clk mclk_1510 = {
 	.ops		= &clkops_generic,
 	/* Direct from ULPD, no parent. May be enabled by ext hardware. */
 	.rate		= 12000000,
-	.flags		= RATE_FIXED,
 	.enable_reg	= OMAP1_IO_ADDRESS(SOFT_REQ_REG),
 	.enable_bit	= 6,
 };
@@ -515,7 +509,6 @@ static struct clk bclk_1510 = {
 	.ops		= &clkops_generic,
 	/* Direct from ULPD, no parent. May be enabled by ext hardware. */
 	.rate		= 12000000,
-	.flags		= RATE_FIXED,
 };
 
 static struct clk bclk_16xx = {
@@ -535,7 +528,7 @@ static struct clk mmc1_ck = {
 	/* Functional clock is direct from ULPD, interface clock is ARMPER */
 	.parent		= &armper_ck.clk,
 	.rate		= 48000000,
-	.flags		= RATE_FIXED | ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
+	.flags		= ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 	.enable_reg	= OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 	.enable_bit	= 23,
 };
@@ -546,7 +539,7 @@ static struct clk mmc2_ck = {
 	/* Functional clock is direct from ULPD, interface clock is ARMPER */
 	.parent		= &armper_ck.clk,
 	.rate		= 48000000,
-	.flags		= RATE_FIXED | ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
+	.flags		= ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 	.enable_reg	= OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 	.enable_bit	= 20,
 };
@@ -557,7 +550,7 @@ static struct clk mmc3_ck = {
 	/* Functional clock is direct from ULPD, interface clock is ARMPER */
 	.parent		= &armper_ck.clk,
 	.rate		= 48000000,
-	.flags		= RATE_FIXED | ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
+	.flags		= ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 	.enable_reg	= OMAP1_IO_ADDRESS(SOFT_REQ_REG),
 	.enable_bit	= 12,
 };