Kill central list of SPI programmers

Remove the array spi_programmer, replace it by dynamic registration
instead. Also initially start with no busses supported, and switch to
the default non-SPI only for the internal programmer.

Also this patch changes the initialization for the buses_supported variable
from "everything-except-SPI" to "nothing". All programmers have to set the
bus type on their own, and this enables register_spi_programmer to just add
the SPI both for on-board SPI interfaces (where the internal programmer
already detected the other bus types), as well as for external programmers
(where we have the default "none").

Corresponding to flashrom svn r1299.

Signed-off-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
diff --git a/dediprog.c b/dediprog.c
index 989306a..1c54c66 100644
--- a/dediprog.c
+++ b/dediprog.c
@@ -248,7 +248,7 @@
 	return 0;
 }
 
-int dediprog_spi_read(struct flashchip *flash, uint8_t *buf, int start, int len)
+static int dediprog_spi_read(struct flashchip *flash, uint8_t *buf, int start, int len)
 {
 	int ret;
 	/* chunksize must be 512, other sizes will NOT work at all. */
@@ -293,7 +293,7 @@
 	return 0;
 }
 
-int dediprog_spi_write_256(struct flashchip *flash, uint8_t *buf, int start, int len)
+static int dediprog_spi_write_256(struct flashchip *flash, uint8_t *buf, int start, int len)
 {
 	int ret;
 
@@ -310,7 +310,7 @@
 	return ret;
 }
 
-int dediprog_spi_send_command(unsigned int writecnt, unsigned int readcnt,
+static int dediprog_spi_send_command(unsigned int writecnt, unsigned int readcnt,
 			const unsigned char *writearr, unsigned char *readarr)
 {
 	int ret;
@@ -526,6 +526,16 @@
 	return millivolt;
 }
 
+static const struct spi_programmer spi_programmer_dediprog = {
+	.type = SPI_CONTROLLER_DEDIPROG,
+	.max_data_read = MAX_DATA_UNSPECIFIED,
+	.max_data_write = MAX_DATA_UNSPECIFIED,
+	.command = dediprog_spi_send_command,
+	.multicommand = default_spi_send_multicommand,
+	.read = dediprog_spi_read,
+	.write_256 = dediprog_spi_write_256,
+};
+
 /* URB numbers refer to the first log ever captured. */
 int dediprog_init(void)
 {
@@ -606,8 +616,7 @@
 		return 1;
 	}
 
-	buses_supported = CHIP_BUSTYPE_SPI;
-	spi_controller = SPI_CONTROLLER_DEDIPROG;
+	register_spi_programmer(&spi_programmer_dediprog);
 
 	/* RE leftover, leave in until the driver is complete. */
 #if 0