spi: ich: Various small tidy-ups

Use debug() instead of printf() to reduce code size and change a bool
return value to the use the 'bool' type. Also drop the global data
declaration since it not actually used. Finally, set the log category.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/drivers/spi/ich.c b/drivers/spi/ich.c
index eeb4c27..b83dfb8 100644 (file)
--- a/drivers/spi/ich.c
+++ b/drivers/spi/ich.c
@@ -5,6 +5,8 @@
  * This file is derived from the flashrom project.
  */
 
+#define LOG_CATEGORY   UCLASS_SPI
+
 #include <common.h>
 #include <div64.h>
 #include <dm.h>
@@ -19,8 +21,6 @@
 
 #include "ich.h"
 
-DECLARE_GLOBAL_DATA_PTR;
-
 #ifdef DEBUG_TRACE
 #define debug_trace(fmt, args...) debug(fmt, ##args)
 #else
@@ -96,7 +96,7 @@ static void ich_set_bbar(struct ich_spi_priv *ctlr, uint32_t minaddr)
 }
 
 /* @return 1 if the SPI flash supports the 33MHz speed */
-static int ich9_can_do_33mhz(struct udevice *dev)
+static bool ich9_can_do_33mhz(struct udevice *dev)
 {
        struct ich_spi_priv *priv = dev_get_priv(dev);
        u32 fdod, speed;
@@ -173,8 +173,7 @@ static int spi_setup_opcode(struct ich_spi_priv *ctlr, struct spi_trans *trans,
                }
 
                if (opcode_index == ctlr->menubytes) {
-                       printf("ICH SPI: Opcode %x not found\n",
-                              trans->opcode);
+                       debug("ICH SPI: Opcode %x not found\n", trans->opcode);
                        return -EINVAL;
                }
 
@@ -182,8 +181,8 @@ static int spi_setup_opcode(struct ich_spi_priv *ctlr, struct spi_trans *trans,
                optype = (optypes >> (opcode_index * 2)) & 0x3;
 
                if (optype != trans->type) {
-                       printf("ICH SPI: Transaction doesn't fit type %d\n",
-                              optype);
+                       debug("ICH SPI: Transaction doesn't fit type %d\n",
+                             optype);
                        return -ENOSPC;
                }
                return opcode_index;
@@ -214,9 +213,9 @@ static int ich_status_poll(struct ich_spi_priv *ctlr, u16 bitmask,
                }
                udelay(10);
        }
+       debug("ICH SPI: SCIP timeout, read %x, expected %x, wts %x %x\n",
+             status, bitmask, wait_til_set, status & bitmask);
 
-       printf("ICH SPI: SCIP timeout, read %x, expected %x\n",
-              status, bitmask);
        return -ETIMEDOUT;
 }