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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
commit03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch)
treefa581f6dc1c0596391690d1f67eceef3af8246dc /drivers/spi/spi-butterfly.c
parentd4e493caf788ef44982e131ff9c786546904d934 (diff)
Linux-libre 4.5-gnu
Diffstat (limited to 'drivers/spi/spi-butterfly.c')
-rw-r--r--drivers/spi/spi-butterfly.c30
1 files changed, 11 insertions, 19 deletions
diff --git a/drivers/spi/spi-butterfly.c b/drivers/spi/spi-butterfly.c
index 9a9586298..22a31e4a1 100644
--- a/drivers/spi/spi-butterfly.c
+++ b/drivers/spi/spi-butterfly.c
@@ -27,7 +27,6 @@
#include <linux/mtd/partitions.h>
-
/*
* This uses SPI to talk with an "AVR Butterfly", which is a $US20 card
* with a battery powered AVR microcontroller and lots of goodies. You
@@ -37,7 +36,6 @@
* and use this custom parallel port cable.
*/
-
/* DATA output bits (pins 2..9 == D0..D7) */
#define butterfly_nreset (1 << 1) /* pin 3 */
@@ -52,14 +50,11 @@
/* CONTROL output bits */
#define spi_cs_bit PARPORT_CONTROL_SELECT /* pin 17 */
-
-
static inline struct butterfly *spidev_to_pp(struct spi_device *spi)
{
return spi->controller_data;
}
-
struct butterfly {
/* REVISIT ... for now, this must be first */
struct spi_bitbang bitbang;
@@ -140,7 +135,6 @@ static void butterfly_chipselect(struct spi_device *spi, int value)
parport_frob_control(pp->port, spi_cs_bit, value ? spi_cs_bit : 0);
}
-
/* we only needed to implement one mode here, and choose SPI_MODE_0 */
#define spidelay(X) do { } while (0)
@@ -149,9 +143,8 @@ static void butterfly_chipselect(struct spi_device *spi, int value)
#include "spi-bitbang-txrx.h"
static u32
-butterfly_txrx_word_mode0(struct spi_device *spi,
- unsigned nsecs,
- u32 word, u8 bits)
+butterfly_txrx_word_mode0(struct spi_device *spi, unsigned nsecs, u32 word,
+ u8 bits)
{
return bitbang_txrx_be_cpha0(spi, nsecs, 0, 0, word, bits);
}
@@ -186,7 +179,6 @@ static struct flash_platform_data flash = {
.nr_parts = ARRAY_SIZE(partitions),
};
-
/* REVISIT remove this ugly global and its "only one" limitation */
static struct butterfly *butterfly;
@@ -197,6 +189,7 @@ static void butterfly_attach(struct parport *p)
struct butterfly *pp;
struct spi_master *master;
struct device *dev = p->physport->dev;
+ struct pardev_cb butterfly_cb;
if (butterfly || !dev)
return;
@@ -229,9 +222,9 @@ static void butterfly_attach(struct parport *p)
* parport hookup
*/
pp->port = p;
- pd = parport_register_device(p, "spi_butterfly",
- NULL, NULL, NULL,
- 0 /* FLAGS */, pp);
+ memset(&butterfly_cb, 0, sizeof(butterfly_cb));
+ butterfly_cb.private = pp;
+ pd = parport_register_dev_model(p, "spi_butterfly", &butterfly_cb, 0);
if (!pd) {
status = -ENOMEM;
goto clean0;
@@ -262,7 +255,6 @@ static void butterfly_attach(struct parport *p)
parport_write_data(pp->port, pp->lastbyte);
msleep(100);
-
/*
* Start SPI ... for now, hide that we're two physical busses.
*/
@@ -283,7 +275,7 @@ static void butterfly_attach(struct parport *p)
pp->dataflash = spi_new_device(pp->bitbang.master, &pp->info[0]);
if (pp->dataflash)
pr_debug("%s: dataflash at %s\n", p->name,
- dev_name(&pp->dataflash->dev));
+ dev_name(&pp->dataflash->dev));
pr_info("%s: AVR Butterfly\n", p->name);
butterfly = pp;
@@ -297,7 +289,7 @@ clean2:
clean1:
parport_unregister_device(pd);
clean0:
- (void) spi_master_put(pp->bitbang.master);
+ spi_master_put(pp->bitbang.master);
done:
pr_debug("%s: butterfly probe, fail %d\n", p->name, status);
}
@@ -325,16 +317,16 @@ static void butterfly_detach(struct parport *p)
parport_release(pp->pd);
parport_unregister_device(pp->pd);
- (void) spi_master_put(pp->bitbang.master);
+ spi_master_put(pp->bitbang.master);
}
static struct parport_driver butterfly_driver = {
.name = "spi_butterfly",
- .attach = butterfly_attach,
+ .match_port = butterfly_attach,
.detach = butterfly_detach,
+ .devmodel = true,
};
-
static int __init butterfly_init(void)
{
return parport_register_driver(&butterfly_driver);