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path: root/drivers/extcon/extcon-arizona.c
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Diffstat (limited to 'drivers/extcon/extcon-arizona.c')
-rw-r--r--drivers/extcon/extcon-arizona.c164
1 files changed, 125 insertions, 39 deletions
diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 4bb0e9ae405d..e2339629126a 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -33,7 +33,7 @@
#include <linux/mfd/arizona/pdata.h>
#include <linux/mfd/arizona/registers.h>
-#define ARIZONA_NUM_BUTTONS 6
+#define ARIZONA_MAX_MICD_RANGE 8
#define ARIZONA_ACCDET_MODE_MIC 0
#define ARIZONA_ACCDET_MODE_HPL 1
@@ -50,6 +50,9 @@ struct arizona_extcon_info {
const struct arizona_micd_config *micd_modes;
int micd_num_modes;
+ const struct arizona_micd_range *micd_ranges;
+ int num_micd_ranges;
+
bool micd_reva;
bool micd_clamp;
@@ -71,20 +74,25 @@ struct arizona_extcon_info {
};
static const struct arizona_micd_config micd_default_modes[] = {
- { 0, 2 << ARIZONA_MICD_BIAS_SRC_SHIFT, 1 },
{ ARIZONA_ACCDET_SRC, 1 << ARIZONA_MICD_BIAS_SRC_SHIFT, 0 },
+ { 0, 2 << ARIZONA_MICD_BIAS_SRC_SHIFT, 1 },
};
-static struct {
- u16 status;
- int report;
-} arizona_lvl_to_key[ARIZONA_NUM_BUTTONS] = {
- { 0x1, BTN_0 },
- { 0x2, BTN_1 },
- { 0x4, BTN_2 },
- { 0x8, BTN_3 },
- { 0x10, BTN_4 },
- { 0x20, BTN_5 },
+static const struct arizona_micd_range micd_default_ranges[] = {
+ { .max = 11, .key = BTN_0 },
+ { .max = 28, .key = BTN_1 },
+ { .max = 54, .key = BTN_2 },
+ { .max = 100, .key = BTN_3 },
+ { .max = 186, .key = BTN_4 },
+ { .max = 430, .key = BTN_5 },
+};
+
+static const int arizona_micd_levels[] = {
+ 3, 6, 8, 11, 13, 16, 18, 21, 23, 26, 28, 31, 34, 36, 39, 41, 44, 46,
+ 49, 52, 54, 57, 60, 62, 65, 67, 70, 73, 75, 78, 81, 83, 89, 94, 100,
+ 105, 111, 116, 122, 127, 139, 150, 161, 173, 186, 196, 209, 220, 245,
+ 270, 295, 321, 348, 375, 402, 430, 489, 550, 614, 681, 752, 903, 1071,
+ 1257,
};
#define ARIZONA_CABLE_MECHANICAL 0
@@ -153,7 +161,7 @@ static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
{
struct arizona *arizona = info->arizona;
- mode %= info->num_micd_modes;
+ mode %= info->micd_num_modes;
if (arizona->pdata.micd_pol_gpio > 0)
gpio_set_value_cansleep(arizona->pdata.micd_pol_gpio,
@@ -728,7 +736,7 @@ static irqreturn_t arizona_micdet(int irq, void *data)
struct arizona_extcon_info *info = data;
struct arizona *arizona = info->arizona;
unsigned int val, lvl;
- int ret, i;
+ int ret, i, key;
mutex_lock(&info->lock);
@@ -815,12 +823,13 @@ static irqreturn_t arizona_micdet(int irq, void *data)
lvl = val & ARIZONA_MICD_LVL_MASK;
lvl >>= ARIZONA_MICD_LVL_SHIFT;
- for (i = 0; i < ARIZONA_NUM_BUTTONS; i++)
- if (lvl & arizona_lvl_to_key[i].status)
- input_report_key(info->input,
- arizona_lvl_to_key[i].report,
- 1);
- input_sync(info->input);
+ WARN_ON(!lvl);
+ WARN_ON(ffs(lvl) - 1 >= info->num_micd_ranges);
+ if (lvl && ffs(lvl) - 1 < info->num_micd_ranges) {
+ key = info->micd_ranges[ffs(lvl) - 1].key;
+ input_report_key(info->input, key, 1);
+ input_sync(info->input);
+ }
} else if (info->detecting) {
dev_dbg(arizona->dev, "Headphone detected\n");
@@ -834,9 +843,9 @@ static irqreturn_t arizona_micdet(int irq, void *data)
}
} else {
dev_dbg(arizona->dev, "Mic button released\n");
- for (i = 0; i < ARIZONA_NUM_BUTTONS; i++)
+ for (i = 0; i < info->num_micd_ranges; i++)
input_report_key(info->input,
- arizona_lvl_to_key[i].report, 0);
+ info->micd_ranges[i].key, 0);
input_sync(info->input);
arizona_extcon_pulse_micbias(info);
}
@@ -923,9 +932,9 @@ static irqreturn_t arizona_jackdet(int irq, void *data)
info->mic = false;
info->hpdet_done = false;
- for (i = 0; i < ARIZONA_NUM_BUTTONS; i++)
+ for (i = 0; i < info->num_micd_ranges; i++)
input_report_key(info->input,
- arizona_lvl_to_key[i].report, 0);
+ info->micd_ranges[i].key, 0);
input_sync(info->input);
ret = extcon_update_state(&info->edev, 0xffffffff, 0);
@@ -954,13 +963,33 @@ static irqreturn_t arizona_jackdet(int irq, void *data)
return IRQ_HANDLED;
}
+/* Map a level onto a slot in the register bank */
+static void arizona_micd_set_level(struct arizona *arizona, int index,
+ unsigned int level)
+{
+ int reg;
+ unsigned int mask;
+
+ reg = ARIZONA_MIC_DETECT_LEVEL_4 - (index / 2);
+
+ if (!(index % 2)) {
+ mask = 0x3f00;
+ level <<= 8;
+ } else {
+ mask = 0x3f;
+ }
+
+ /* Program the level itself */
+ regmap_update_bits(arizona->regmap, reg, mask, level);
+}
+
static int arizona_extcon_probe(struct platform_device *pdev)
{
struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
struct arizona_pdata *pdata;
struct arizona_extcon_info *info;
int jack_irq_fall, jack_irq_rise;
- int ret, mode, i;
+ int ret, mode, i, j;
if (!arizona->dapm || !arizona->dapm->card)
return -EPROBE_DEFER;
@@ -1013,6 +1042,17 @@ static int arizona_extcon_probe(struct platform_device *pdev)
goto err;
}
+ info->input = devm_input_allocate_device(&pdev->dev);
+ if (!info->input) {
+ dev_err(arizona->dev, "Can't allocate input dev\n");
+ ret = -ENOMEM;
+ goto err_register;
+ }
+
+ info->input->name = "Headset";
+ info->input->phys = "arizona/extcon";
+ info->input->dev.parent = &pdev->dev;
+
if (pdata->num_micd_configs) {
info->micd_modes = pdata->micd_configs;
info->micd_num_modes = pdata->num_micd_configs;
@@ -1068,6 +1108,66 @@ static int arizona_extcon_probe(struct platform_device *pdev)
arizona->pdata.micd_dbtime
<< ARIZONA_MICD_DBTIME_SHIFT);
+ BUILD_BUG_ON(ARRAY_SIZE(arizona_micd_levels) != 0x40);
+
+ if (arizona->pdata.num_micd_ranges) {
+ info->micd_ranges = pdata->micd_ranges;
+ info->num_micd_ranges = pdata->num_micd_ranges;
+ } else {
+ info->micd_ranges = micd_default_ranges;
+ info->num_micd_ranges = ARRAY_SIZE(micd_default_ranges);
+ }
+
+ if (arizona->pdata.num_micd_ranges > ARIZONA_MAX_MICD_RANGE) {
+ dev_err(arizona->dev, "Too many MICD ranges: %d\n",
+ arizona->pdata.num_micd_ranges);
+ }
+
+ if (info->num_micd_ranges > 1) {
+ for (i = 1; i < info->num_micd_ranges; i++) {
+ if (info->micd_ranges[i - 1].max >
+ info->micd_ranges[i].max) {
+ dev_err(arizona->dev,
+ "MICD ranges must be sorted\n");
+ ret = -EINVAL;
+ goto err_input;
+ }
+ }
+ }
+
+ /* Disable all buttons by default */
+ regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
+ ARIZONA_MICD_LVL_SEL_MASK, 0x81);
+
+ /* Set up all the buttons the user specified */
+ for (i = 0; i < info->num_micd_ranges; i++) {
+ for (j = 0; j < ARRAY_SIZE(arizona_micd_levels); j++)
+ if (arizona_micd_levels[j] >= info->micd_ranges[i].max)
+ break;
+
+ if (j == ARRAY_SIZE(arizona_micd_levels)) {
+ dev_err(arizona->dev, "Unsupported MICD level %d\n",
+ info->micd_ranges[i].max);
+ ret = -EINVAL;
+ goto err_input;
+ }
+
+ dev_dbg(arizona->dev, "%d ohms for MICD threshold %d\n",
+ arizona_micd_levels[j], i);
+
+ arizona_micd_set_level(arizona, i, j);
+ input_set_capability(info->input, EV_KEY,
+ info->micd_ranges[i].key);
+
+ /* Enable reporting of that range */
+ regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
+ 1 << i, 1 << i);
+ }
+
+ /* Set all the remaining keys to a maximum */
+ for (; i < ARIZONA_MAX_MICD_RANGE; i++)
+ arizona_micd_set_level(arizona, i, 0x3f);
+
/*
* If we have a clamp use it, activating in conjunction with
* GPIO5 if that is connected for jack detect operation.
@@ -1095,20 +1195,6 @@ static int arizona_extcon_probe(struct platform_device *pdev)
arizona_extcon_set_mode(info, 0);
- info->input = devm_input_allocate_device(&pdev->dev);
- if (!info->input) {
- dev_err(arizona->dev, "Can't allocate input dev\n");
- ret = -ENOMEM;
- goto err_register;
- }
-
- for (i = 0; i < ARIZONA_NUM_BUTTONS; i++)
- input_set_capability(info->input, EV_KEY,
- arizona_lvl_to_key[i].report);
- info->input->name = "Headset";
- info->input->phys = "arizona/extcon";
- info->input->dev.parent = &pdev->dev;
-
pm_runtime_enable(&pdev->dev);
pm_runtime_idle(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-19 08:34:32 +0100