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authorLinus Torvalds <torvalds@linux-foundation.org>2023-06-30 21:48:16 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-06-30 21:48:16 +0300
commit1546cd4bfda49fd6faad47eb30f4e744e2d79a8f (patch)
treec20714d63d40c094a6f45538947753163dc71ae8 /drivers/ata/pata_parport/on20.c
parentb30d7a77c53ec04a6d94683d7680ec406b7f3ac8 (diff)
parentfd3ac6e8049799ca7dbd2738de8e149536e92a5e (diff)
downloadlinux-1546cd4bfda49fd6faad47eb30f4e744e2d79a8f.tar.xz
Merge tag 'ata-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
Pull ata updates from Damien Le Moal: - Add support for the .remove_new callback to the ata_platform code to simplify device removal interface (Uwe) - Code simplification in ata_dev_revalidate() (Yahu) - Fix code indentation and coding style in the pata_parport protocol modules to avoid warnings from static code analyzers (me) - Clarify ata_eh_qc_retry() behavior with better comments (Niklas) - Simplify and improve ata_change_queue_depth() behavior to have a consistent behavior between libsas managed devices and libata managed devices (e.g. AHCI connected devices) (me) - Cleanup libata-scsi and libata-eh code to use the ata_ncq_enabled() and ata_ncq_supported() helpers instead of open coding flags tests (me) - Cleanup ahci_reset_controller() code (me) - Change the pata_octeon_cf and sata_svw drivers to use of_property_read_reg() to simplify the code (Rob, me) - Remove unnecessary include files from ahci_octeon driver (me) - Modify the DesignWare ahci dt bindings to add support for the Rockchip RK3588 AHCI (Sebastian) * tag 'ata-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata: (29 commits) dt-bindings: phy: rockchip: rk3588 has two reset lines dt-bindings: ata: dwc-ahci: add Rockchip RK3588 dt-bindings: ata: dwc-ahci: add PHY clocks ata: ahci_octeon: Remove unnecessary include ata: pata_octeon_cf: Add missing header include ata: ahci: Cleanup ahci_reset_controller() ata: Use of_property_read_reg() to parse "reg" ata: libata-scsi: Use ata_ncq_supported in ata_scsi_dev_config() ata: libata-eh: Use ata_ncq_enabled() in ata_eh_speed_down() ata: libata-sata: Improve ata_change_queue_depth() ata: libata-sata: Simplify ata_change_queue_depth() ata: libata-eh: Clarify ata_eh_qc_retry() behavior at call site ata: pata_parport: Fix on26 module code indentation and style ata: pata_parport: Fix on20 module code indentation and style ata: pata_parport: Fix ktti module code indentation and style ata: pata_parport: Fix kbic module code indentation and style ata: pata_parport: Fix friq module code indentation and style ata: pata_parport: Fix fit3 module code indentation and style ata: pata_parport: Fix fit2 module code indentation and style ata: pata_parport: Fix epia module code indentation and style ...
Diffstat (limited to 'drivers/ata/pata_parport/on20.c')
-rw-r--r--drivers/ata/pata_parport/on20.c149
1 files changed, 82 insertions, 67 deletions
diff --git a/drivers/ata/pata_parport/on20.c b/drivers/ata/pata_parport/on20.c
index 276ace12d490..34e69da2bec8 100644
--- a/drivers/ata/pata_parport/on20.c
+++ b/drivers/ata/pata_parport/on20.c
@@ -1,10 +1,10 @@
-/*
- on20.c (c) 1996-8 Grant R. Guenther <grant@torque.net>
- Under the terms of the GNU General Public License.
-
- on20.c is a low-level protocol driver for the
- Onspec 90c20 parallel to IDE adapter.
-*/
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * (c) 1996-1998 Grant R. Guenther <grant@torque.net>
+ *
+ * on20.c is a low-level protocol driver for the
+ * Onspec 90c20 parallel to IDE adapter.
+ */
#include <linux/module.h>
#include <linux/init.h>
@@ -15,99 +15,114 @@
#include <asm/io.h>
#include "pata_parport.h"
-#define op(f) w2(4);w0(f);w2(5);w2(0xd);w2(5);w2(0xd);w2(5);w2(4);
-#define vl(v) w2(4);w0(v);w2(5);w2(7);w2(5);w2(4);
-
-#define j44(a,b) (((a>>4)&0x0f)|(b&0xf0))
-
-/* cont = 0 - access the IDE register file
- cont = 1 - access the IDE command set
-*/
-
-static int on20_read_regr(struct pi_adapter *pi, int cont, int regr)
-
-{ int h,l, r ;
+#define op(f) \
+ do { \
+ w2(4); w0(f); w2(5); w2(0xd); \
+ w2(5); w2(0xd); w2(5); w2(4); \
+ } while (0)
- r = (regr<<2) + 1 + cont;
+#define vl(v) \
+ do { \
+ w2(4); w0(v); w2(5); \
+ w2(7); w2(5); w2(4); \
+ } while (0)
- op(1); vl(r); op(0);
+#define j44(a, b) (((a >> 4) & 0x0f) | (b & 0xf0))
- switch (pi->mode) {
-
- case 0: w2(4); w2(6); l = r1();
- w2(4); w2(6); h = r1();
- w2(4); w2(6); w2(4); w2(6); w2(4);
- return j44(l,h);
-
- case 1: w2(4); w2(0x26); r = r0();
- w2(4); w2(0x26); w2(4);
- return r;
+/*
+ * cont = 0 - access the IDE register file
+ * cont = 1 - access the IDE command set
+ */
+static int on20_read_regr(struct pi_adapter *pi, int cont, int regr)
+{
+ int h, l, r;
+
+ r = (regr << 2) + 1 + cont;
+
+ op(1); vl(r); op(0);
+
+ switch (pi->mode) {
+ case 0:
+ w2(4); w2(6); l = r1();
+ w2(4); w2(6); h = r1();
+ w2(4); w2(6); w2(4); w2(6); w2(4);
+ return j44(l, h);
+ case 1:
+ w2(4); w2(0x26); r = r0();
+ w2(4); w2(0x26); w2(4);
+ return r;
}
+
return -1;
-}
+}
static void on20_write_regr(struct pi_adapter *pi, int cont, int regr, int val)
+{
+ int r = (regr << 2) + 1 + cont;
-{ int r;
-
- r = (regr<<2) + 1 + cont;
-
- op(1); vl(r);
- op(0); vl(val);
+ op(1); vl(r);
+ op(0); vl(val);
op(0); vl(val);
}
static void on20_connect(struct pi_adapter *pi)
-
-{ pi->saved_r0 = r0();
- pi->saved_r2 = r2();
-
- w2(4);w0(0);w2(0xc);w2(4);w2(6);w2(4);w2(6);w2(4);
- if (pi->mode) { op(2); vl(8); op(2); vl(9); }
- else { op(2); vl(0); op(2); vl(8); }
+{
+ pi->saved_r0 = r0();
+ pi->saved_r2 = r2();
+
+ w2(4); w0(0); w2(0xc); w2(4); w2(6); w2(4); w2(6); w2(4);
+ if (pi->mode) {
+ op(2); vl(8); op(2); vl(9);
+ } else {
+ op(2); vl(0); op(2); vl(8);
+ }
}
static void on20_disconnect(struct pi_adapter *pi)
-
-{ w2(4);w0(7);w2(4);w2(0xc);w2(4);
- w0(pi->saved_r0);
- w2(pi->saved_r2);
-}
+{
+ w2(4); w0(7); w2(4); w2(0xc); w2(4);
+ w0(pi->saved_r0);
+ w2(pi->saved_r2);
+}
static void on20_read_block(struct pi_adapter *pi, char *buf, int count)
-
-{ int k, l, h;
+{
+ int k, l, h;
op(1); vl(1); op(0);
- for (k=0;k<count;k++)
- if (pi->mode) {
- w2(4); w2(0x26); buf[k] = r0();
- } else {
- w2(6); l = r1(); w2(4);
- w2(6); h = r1(); w2(4);
- buf[k] = j44(l,h);
- }
+ for (k = 0; k < count; k++) {
+ if (pi->mode) {
+ w2(4); w2(0x26); buf[k] = r0();
+ } else {
+ w2(6); l = r1(); w2(4);
+ w2(6); h = r1(); w2(4);
+ buf[k] = j44(l, h);
+ }
+ }
w2(4);
}
static void on20_write_block(struct pi_adapter *pi, char *buf, int count)
-
-{ int k;
+{
+ int k;
op(1); vl(1); op(0);
- for (k=0;k<count;k++) { w2(5); w0(buf[k]); w2(7); }
+ for (k = 0; k < count; k++) {
+ w2(5); w0(buf[k]); w2(7);
+ }
w2(4);
}
static void on20_log_adapter(struct pi_adapter *pi)
+{
+ char *mode_string[2] = { "4-bit", "8-bit" };
-{ char *mode_string[2] = {"4-bit","8-bit"};
-
- dev_info(&pi->dev, "OnSpec 90c20 at 0x%x, mode %d (%s), delay %d\n",
- pi->port, pi->mode, mode_string[pi->mode], pi->delay);
+ dev_info(&pi->dev,
+ "OnSpec 90c20 at 0x%x, mode %d (%s), delay %d\n",
+ pi->port, pi->mode, mode_string[pi->mode], pi->delay);
}
static struct pi_protocol on20 = {