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Subject[PATCH 3/4] pinctrl: single: Use generic parser and #pinctrl-cells for pinctrl-single,bits
Date
We can now use generic parser and keep things compatible with the
old binding.

Signed-off-by: Tony Lindgren <tony@atomide.com>
---
drivers/pinctrl/pinctrl-single.c | 50 +++++++++++++++++++++-------------------
1 file changed, 26 insertions(+), 24 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
--- a/drivers/pinctrl/pinctrl-single.c
+++ b/drivers/pinctrl/pinctrl-single.c
@@ -35,7 +35,6 @@
#include "pinconf.h"

#define DRIVER_NAME "pinctrl-single"
-#define PCS_MUX_BITS_NAME "pinctrl-single,bits"
#define PCS_OFF_DISABLED ~0U

/**
@@ -1217,36 +1216,23 @@ static int pcs_parse_one_pinctrl_entry(struct pcs_device *pcs,
return res;
}

-#define PARAMS_FOR_BITS_PER_MUX 3
-
static int pcs_parse_bits_in_pinctrl_entry(struct pcs_device *pcs,
struct device_node *np,
struct pinctrl_map **map,
unsigned *num_maps,
const char **pgnames)
{
+ const char *name = "pinctrl-single,pins";
+ const char *pinctrl_cells = "#pinctrl-cells";
struct pcs_func_vals *vals;
- const __be32 *mux;
- int size, rows, *pins, index = 0, found = 0, res = -ENOMEM;
+ int rows, *pins, found = 0, res = -ENOMEM, i;
int npins_in_row;
struct pcs_function *function;

- mux = of_get_property(np, PCS_MUX_BITS_NAME, &size);
-
- if (!mux) {
- dev_err(pcs->dev, "no valid property for %s\n", np->name);
- return -EINVAL;
- }
-
- if (size < (sizeof(*mux) * PARAMS_FOR_BITS_PER_MUX)) {
- dev_err(pcs->dev, "bad data for %s\n", np->name);
- return -EINVAL;
- }
-
- /* Number of elements in array */
- size /= sizeof(*mux);
+ rows = pinctrl_count_index_with_args(np, name, pinctrl_cells);
+ if (rows == -EINVAL)
+ return rows;

- rows = size / PARAMS_FOR_BITS_PER_MUX;
npins_in_row = pcs->width / pcs->bits_per_pin;

vals = devm_kzalloc(pcs->dev, sizeof(*vals) * rows * npins_in_row,
@@ -1259,15 +1245,31 @@ static int pcs_parse_bits_in_pinctrl_entry(struct pcs_device *pcs,
if (!pins)
goto free_vals;

- while (index < size) {
+ for (i = 0; i < rows; i++) {
+ struct of_phandle_args pinctrl_spec;
unsigned offset, val;
unsigned mask, bit_pos, val_pos, mask_pos, submask;
unsigned pin_num_from_lsb;
int pin;

- offset = be32_to_cpup(mux + index++);
- val = be32_to_cpup(mux + index++);
- mask = be32_to_cpup(mux + index++);
+ res = pinctrl_parse_index_with_args(np, name, pinctrl_cells,
+ i, &pinctrl_spec);
+ if (res)
+ return res;
+
+ if (pinctrl_spec.args_count < 3) {
+ dev_err(pcs->dev, "invalid args_count for spec: %i\n",
+ pinctrl_spec.args_count);
+ break;
+ }
+
+ /* Index plus two value cells */
+ offset = pinctrl_spec.args[0];
+ val = pinctrl_spec.args[1];
+ mask = pinctrl_spec.args[2];
+
+ dev_dbg(pcs->dev, "%s index: 0x%x value: 0x%x mask: 0x%x\n",
+ pinctrl_spec.np->name, offset, val, mask);

/* Parse pins in each row from LSB */
while (mask) {
--
2.9.3
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