radeonfb: Deinline large functions

With this .config: http://busybox.net/~vda/kernel_config,
after uninlining these functions have sizes and callsite counts
as follows:

__OUTPLLP: 61 bytes, 12 callsites
__INPLL:   79 bytes, 150 callsites
__OUTPLL:  82 bytes, 138 callsites
_OUTREGP: 101 bytes, 8 callsites
_radeon_msleep:      66 bytes, 18 callsites
_radeon_fifo_wait:   83 bytes, 24 callsites
_radeon_engine_idle: 92 bytes, 10 callsites
radeon_engine_flush: 105 bytes, 2 callsites
radeon_pll_errata_after_index_slow: 31 bytes, 11 callsites
radeon_pll_errata_after_data_slow:  91 bytes, 9 callsites

radeon_pll_errata_after_FOO functions are split into two parts:
the inlined part which checks corresponding rinfo->errata bit,
and out-of-line part which performs workaround magic per se.

Reduction in code size is about 49,500 bytes:

    text     data      bss       dec     hex filename
85789648 22294616 20627456 128711720 7abfc28 vmlinux.before
85740176 22294680 20627456 128662312 7ab3b28 vmlinux

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: David Airlie <airlied@linux.ie>
Cc: Alex Deucher <alexdeucher@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Dave Airlie <airlied@redhat.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-fbdev@vger.kernel.org
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

2 files changed, 146 insertions, 131 deletions

diff --git a/drivers/video/fbdev/aty/radeon_base.c b/drivers/video/fbdev/aty/radeon_base.c
index 2bdb070707e4..ce0b1d05a388 100644
--- a/drivers/video/fbdev/aty/radeon_base.c
+++ b/drivers/video/fbdev/aty/radeon_base.c
@@ -276,9 +276,138 @@ static int backlight = 1;
 static int backlight = 0;
 #endif
 
-/*
- * prototypes
+/* Note about this function: we have some rare cases where we must not schedule,
+ * this typically happen with our special "wake up early" hook which allows us to
+ * wake up the graphic chip (and thus get the console back) before everything else
+ * on some machines that support that mechanism. At this point, interrupts are off
+ * and scheduling is not permitted
  */
+void _radeon_msleep(struct radeonfb_info *rinfo, unsigned long ms)
+{
+        if (rinfo->no_schedule || oops_in_progress)
+                mdelay(ms);
+        else
+                msleep(ms);
+}
+
+void radeon_pll_errata_after_index_slow(struct radeonfb_info *rinfo)
+{
+        /* Called if (rinfo->errata & CHIP_ERRATA_PLL_DUMMYREADS) is set */
+        (void)INREG(CLOCK_CNTL_DATA);
+        (void)INREG(CRTC_GEN_CNTL);
+}
+
+void radeon_pll_errata_after_data_slow(struct radeonfb_info *rinfo)
+{
+        if (rinfo->errata & CHIP_ERRATA_PLL_DELAY) {
+                /* we can't deal with posted writes here ... */
+                _radeon_msleep(rinfo, 5);
+        }
+        if (rinfo->errata & CHIP_ERRATA_R300_CG) {
+                u32 save, tmp;
+                save = INREG(CLOCK_CNTL_INDEX);
+                tmp = save & ~(0x3f | PLL_WR_EN);
+                OUTREG(CLOCK_CNTL_INDEX, tmp);
+                tmp = INREG(CLOCK_CNTL_DATA);
+                OUTREG(CLOCK_CNTL_INDEX, save);
+        }
+}
+
+void _OUTREGP(struct radeonfb_info *rinfo, u32 addr, u32 val, u32 mask)
+{
+        unsigned long flags;
+        unsigned int tmp;
+
+        spin_lock_irqsave(&rinfo->reg_lock, flags);
+        tmp = INREG(addr);
+        tmp &= (mask);
+        tmp |= (val);
+        OUTREG(addr, tmp);
+        spin_unlock_irqrestore(&rinfo->reg_lock, flags);
+}
+
+u32 __INPLL(struct radeonfb_info *rinfo, u32 addr)
+{
+        u32 data;
+
+        OUTREG8(CLOCK_CNTL_INDEX, addr & 0x0000003f);
+        radeon_pll_errata_after_index(rinfo);
+        data = INREG(CLOCK_CNTL_DATA);
+        radeon_pll_errata_after_data(rinfo);
+        return data;
+}
+
+void __OUTPLL(struct radeonfb_info *rinfo, unsigned int index, u32 val)
+{
+        OUTREG8(CLOCK_CNTL_INDEX, (index & 0x0000003f) | 0x00000080);
+        radeon_pll_errata_after_index(rinfo);
+        OUTREG(CLOCK_CNTL_DATA, val);
+        radeon_pll_errata_after_data(rinfo);
+}
+
+void __OUTPLLP(struct radeonfb_info *rinfo, unsigned int index,
+                             u32 val, u32 mask)
+{
+        unsigned int tmp;
+
+        tmp  = __INPLL(rinfo, index);
+        tmp &= (mask);
+        tmp |= (val);
+        __OUTPLL(rinfo, index, tmp);
+}
+
+void _radeon_fifo_wait(struct radeonfb_info *rinfo, int entries)
+{
+        int i;
+
+        for (i=0; i<2000000; i++) {
+                if ((INREG(RBBM_STATUS) & 0x7f) >= entries)
+                        return;
+                udelay(1);
+        }
+        printk(KERN_ERR "radeonfb: FIFO Timeout !\n");
+}
+
+void radeon_engine_flush(struct radeonfb_info *rinfo)
+{
+        int i;
+
+        /* Initiate flush */
+        OUTREGP(DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL,
+                ~RB2D_DC_FLUSH_ALL);
+
+        /* Ensure FIFO is empty, ie, make sure the flush commands
+         * has reached the cache
+         */
+        _radeon_fifo_wait(rinfo, 64);
+
+        /* Wait for the flush to complete */
+        for (i=0; i < 2000000; i++) {
+                if (!(INREG(DSTCACHE_CTLSTAT) & RB2D_DC_BUSY))
+                        return;
+                udelay(1);
+        }
+        printk(KERN_ERR "radeonfb: Flush Timeout !\n");
+}
+
+void _radeon_engine_idle(struct radeonfb_info *rinfo)
+{
+        int i;
+
+        /* ensure FIFO is empty before waiting for idle */
+        _radeon_fifo_wait(rinfo, 64);
+
+        for (i=0; i<2000000; i++) {
+                if (((INREG(RBBM_STATUS) & GUI_ACTIVE)) == 0) {
+                        radeon_engine_flush(rinfo);
+                        return;
+                }
+                udelay(1);
+        }
+        printk(KERN_ERR "radeonfb: Idle Timeout !\n");
+}
+
+
 
 static void radeon_unmap_ROM(struct radeonfb_info *rinfo, struct pci_dev *dev)
 {
diff --git a/drivers/video/fbdev/aty/radeonfb.h b/drivers/video/fbdev/aty/radeonfb.h
index 5bc1944ea1a9..962e31263225 100644
--- a/drivers/video/fbdev/aty/radeonfb.h
+++ b/drivers/video/fbdev/aty/radeonfb.h
@@ -370,20 +370,7 @@ struct radeonfb_info {
  * IO macros
  */
 
-/* Note about this function: we have some rare cases where we must not schedule,
- * this typically happen with our special "wake up early" hook which allows us to
- * wake up the graphic chip (and thus get the console back) before everything else
- * on some machines that support that mechanism. At this point, interrupts are off
- * and scheduling is not permitted
- */
-static inline void _radeon_msleep(struct radeonfb_info *rinfo, unsigned long ms)
-{
-        if (rinfo->no_schedule || oops_in_progress)
-                mdelay(ms);
-        else
-                msleep(ms);
-}
-
+void _radeon_msleep(struct radeonfb_info *rinfo, unsigned long ms);
 
 #define INREG8(addr)            readb((rinfo->mmio_base)+addr)
 #define OUTREG8(addr,val)       writeb(val, (rinfo->mmio_base)+addr)
@@ -392,19 +379,7 @@ static inline void _radeon_msleep(struct radeonfb_info *rinfo, unsigned long ms)
 #define INREG(addr)             readl((rinfo->mmio_base)+addr)
 #define OUTREG(addr,val)        writel(val, (rinfo->mmio_base)+addr)
 
-static inline void _OUTREGP(struct radeonfb_info *rinfo, u32 addr,
-                       u32 val, u32 mask)
-{
-        unsigned long flags;
-        unsigned int tmp;
-
-        spin_lock_irqsave(&rinfo->reg_lock, flags);
-        tmp = INREG(addr);
-        tmp &= (mask);
-        tmp |= (val);
-        OUTREG(addr, tmp);
-        spin_unlock_irqrestore(&rinfo->reg_lock, flags);
-}
+void _OUTREGP(struct radeonfb_info *rinfo, u32 addr, u32 val, u32 mask);
 
 #define OUTREGP(addr,val,mask)  _OUTREGP(rinfo, addr, val,mask)
 
@@ -425,64 +400,24 @@ static inline void _OUTREGP(struct radeonfb_info *rinfo, u32 addr,
  * possible exception to this rule is the call to unblank(), which may
  * be done at irq time if an oops is in progress.
  */
+void radeon_pll_errata_after_index_slow(struct radeonfb_info *rinfo);
 static inline void radeon_pll_errata_after_index(struct radeonfb_info *rinfo)
 {
-        if (!(rinfo->errata & CHIP_ERRATA_PLL_DUMMYREADS))
-                return;
-
-        (void)INREG(CLOCK_CNTL_DATA);
-        (void)INREG(CRTC_GEN_CNTL);
+        if (rinfo->errata & CHIP_ERRATA_PLL_DUMMYREADS)
+                radeon_pll_errata_after_index_slow(rinfo);
 }
 
+void radeon_pll_errata_after_data_slow(struct radeonfb_info *rinfo);
 static inline void radeon_pll_errata_after_data(struct radeonfb_info *rinfo)
 {
-        if (rinfo->errata & CHIP_ERRATA_PLL_DELAY) {
-                /* we can't deal with posted writes here ... */
-                _radeon_msleep(rinfo, 5);
-        }
-        if (rinfo->errata & CHIP_ERRATA_R300_CG) {
-                u32 save, tmp;
-                save = INREG(CLOCK_CNTL_INDEX);
-                tmp = save & ~(0x3f | PLL_WR_EN);
-                OUTREG(CLOCK_CNTL_INDEX, tmp);
-                tmp = INREG(CLOCK_CNTL_DATA);
-                OUTREG(CLOCK_CNTL_INDEX, save);
-        }
-}
-
-static inline u32 __INPLL(struct radeonfb_info *rinfo, u32 addr)
-{
-        u32 data;
-
-        OUTREG8(CLOCK_CNTL_INDEX, addr & 0x0000003f);
-        radeon_pll_errata_after_index(rinfo);
-        data = INREG(CLOCK_CNTL_DATA);
-        radeon_pll_errata_after_data(rinfo);
-        return data;
-}
-
-static inline void __OUTPLL(struct radeonfb_info *rinfo, unsigned int index,
-                            u32 val)
-{
-
-        OUTREG8(CLOCK_CNTL_INDEX, (index & 0x0000003f) | 0x00000080);
-        radeon_pll_errata_after_index(rinfo);
-        OUTREG(CLOCK_CNTL_DATA, val);
-        radeon_pll_errata_after_data(rinfo);
-}
-
-
-static inline void __OUTPLLP(struct radeonfb_info *rinfo, unsigned int index,
-                             u32 val, u32 mask)
-{
-        unsigned int tmp;
-
-        tmp  = __INPLL(rinfo, index);
-        tmp &= (mask);
-        tmp |= (val);
-        __OUTPLL(rinfo, index, tmp);
+        if (rinfo->errata & (CHIP_ERRATA_PLL_DELAY|CHIP_ERRATA_R300_CG))
+                radeon_pll_errata_after_data_slow(rinfo);
 }
 
+u32 __INPLL(struct radeonfb_info *rinfo, u32 addr);
+void __OUTPLL(struct radeonfb_info *rinfo, unsigned int index, u32 val);
+void __OUTPLLP(struct radeonfb_info *rinfo, unsigned int index,
+                             u32 val, u32 mask);
 
 #define INPLL(addr)                     __INPLL(rinfo, addr)
 #define OUTPLL(index, val)              __OUTPLL(rinfo, index, val)
@@ -532,58 +467,9 @@ static inline u32 radeon_get_dstbpp(u16 depth)
  * 2D Engine helper routines
  */
 
-static inline void _radeon_fifo_wait(struct radeonfb_info *rinfo, int entries)
-{
-        int i;
-
-        for (i=0; i<2000000; i++) {
-                if ((INREG(RBBM_STATUS) & 0x7f) >= entries)
-                        return;
-                udelay(1);
-        }
-        printk(KERN_ERR "radeonfb: FIFO Timeout !\n");
-}
-
-static inline void radeon_engine_flush (struct radeonfb_info *rinfo)
-{
-        int i;
-
-        /* Initiate flush */
-        OUTREGP(DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL,
-                ~RB2D_DC_FLUSH_ALL);
-
-        /* Ensure FIFO is empty, ie, make sure the flush commands
-         * has reached the cache
-         */
-        _radeon_fifo_wait (rinfo, 64);
-
-        /* Wait for the flush to complete */
-        for (i=0; i < 2000000; i++) {
-                if (!(INREG(DSTCACHE_CTLSTAT) & RB2D_DC_BUSY))
-                        return;
-                udelay(1);
-        }
-        printk(KERN_ERR "radeonfb: Flush Timeout !\n");
-}
-
-
-static inline void _radeon_engine_idle(struct radeonfb_info *rinfo)
-{
-        int i;
-
-        /* ensure FIFO is empty before waiting for idle */
-        _radeon_fifo_wait (rinfo, 64);
-
-        for (i=0; i<2000000; i++) {
-                if (((INREG(RBBM_STATUS) & GUI_ACTIVE)) == 0) {
-                        radeon_engine_flush (rinfo);
-                        return;
-                }
-                udelay(1);
-        }
-        printk(KERN_ERR "radeonfb: Idle Timeout !\n");
-}
-
+void _radeon_fifo_wait(struct radeonfb_info *rinfo, int entries);
+void radeon_engine_flush(struct radeonfb_info *rinfo);
+void _radeon_engine_idle(struct radeonfb_info *rinfo);
 
 #define radeon_engine_idle()            _radeon_engine_idle(rinfo)
 #define radeon_fifo_wait(entries)       _radeon_fifo_wait(rinfo,entries)