mfd: 88pm80x: Change chip id definition and detection
Change the chip id definition and detection and then: 1. We no longer need to add PM800_CHIP_XXX for the coming revision. 2. We no longer need to pass driver_data in i2c_device_id as we can distinguish the chips from the CHIP_ID register. Signed-off-by: Chao Xie <chao.xie@marvell.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>hifive-unleashed-5.1
Chao Xie
Samuel Ortiz
parent
52705344d0
commit
03dcc544bf
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@ -28,8 +28,6 @@
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#include <linux/mfd/88pm80x.h>
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#include <linux/slab.h>
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#define PM800_CHIP_ID (0x00)
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/* Interrupt Registers */
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#define PM800_INT_STATUS1 (0x05)
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#define PM800_ONKEY_INT_STS1 (1 << 0)
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@ -114,20 +112,11 @@ enum {
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PM800_MAX_IRQ,
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};
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enum {
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/* Procida */
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PM800_CHIP_A0 = 0x60,
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PM800_CHIP_A1 = 0x61,
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PM800_CHIP_B0 = 0x62,
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PM800_CHIP_C0 = 0x63,
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PM800_CHIP_END = PM800_CHIP_C0,
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/* Make sure to update this to the last stepping */
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PM8XXX_CHIP_END = PM800_CHIP_END
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};
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/* PM800: generation identification number */
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#define PM800_CHIP_GEN_ID_NUM 0x3
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static const struct i2c_device_id pm80x_id_table[] = {
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{"88PM800", CHIP_PM800},
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{"88PM800", 0},
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{} /* NULL terminated */
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};
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MODULE_DEVICE_TABLE(i2c, pm80x_id_table);
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@ -434,28 +423,9 @@ static void pm800_pages_exit(struct pm80x_chip *chip)
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static int device_800_init(struct pm80x_chip *chip,
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struct pm80x_platform_data *pdata)
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{
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int ret, pmic_id;
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int ret;
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unsigned int val;
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ret = regmap_read(chip->regmap, PM800_CHIP_ID, &val);
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if (ret < 0) {
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dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
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goto out;
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}
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pmic_id = val & PM80X_VERSION_MASK;
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if ((pmic_id >= PM800_CHIP_A0) && (pmic_id <= PM800_CHIP_END)) {
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chip->version = val;
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dev_info(chip->dev,
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"88PM80x:Marvell 88PM800 (ID:0x%x) detected\n", val);
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} else {
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dev_err(chip->dev,
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"Failed to detect Marvell 88PM800:ChipID[0x%x]\n", val);
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ret = -EINVAL;
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goto out;
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}
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/*
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* alarm wake up bit will be clear in device_irq_init(),
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* read before that
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@ -523,7 +493,7 @@ static int pm800_probe(struct i2c_client *client,
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struct pm80x_platform_data *pdata = client->dev.platform_data;
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struct pm80x_subchip *subchip;
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ret = pm80x_init(client, id);
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ret = pm80x_init(client);
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if (ret) {
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dev_err(&client->dev, "pm800_init fail\n");
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goto out_init;
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@ -553,7 +523,7 @@ static int pm800_probe(struct i2c_client *client,
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ret = device_800_init(chip, pdata);
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if (ret) {
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dev_err(chip->dev, "%s id 0x%x failed!\n", __func__, chip->id);
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dev_err(chip->dev, "Failed to initialize 88pm800 devices\n");
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goto err_device_init;
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}
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@ -29,10 +29,8 @@
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#include <linux/slab.h>
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#include <linux/delay.h>
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#define PM805_CHIP_ID (0x00)
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static const struct i2c_device_id pm80x_id_table[] = {
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{"88PM805", CHIP_PM805},
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{"88PM805", 0},
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{} /* NULL terminated */
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};
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MODULE_DEVICE_TABLE(i2c, pm80x_id_table);
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@ -192,7 +190,6 @@ static struct regmap_irq_chip pm805_irq_chip = {
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static int device_805_init(struct pm80x_chip *chip)
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{
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int ret = 0;
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unsigned int val;
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struct regmap *map = chip->regmap;
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if (!map) {
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@ -200,13 +197,6 @@ static int device_805_init(struct pm80x_chip *chip)
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return -EINVAL;
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}
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ret = regmap_read(map, PM805_CHIP_ID, &val);
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if (ret < 0) {
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dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
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goto out_irq_init;
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}
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chip->version = val;
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chip->regmap_irq_chip = &pm805_irq_chip;
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ret = device_irq_init_805(chip);
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@ -239,7 +229,7 @@ static int pm805_probe(struct i2c_client *client,
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struct pm80x_chip *chip;
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struct pm80x_platform_data *pdata = client->dev.platform_data;
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ret = pm80x_init(client, id);
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ret = pm80x_init(client);
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if (ret) {
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dev_err(&client->dev, "pm805_init fail!\n");
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goto out_init;
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@ -249,7 +239,7 @@ static int pm805_probe(struct i2c_client *client,
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ret = device_805_init(chip);
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if (ret) {
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dev_err(chip->dev, "%s id 0x%x failed!\n", __func__, chip->id);
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dev_err(chip->dev, "Failed to initialize 88pm805 devices\n");
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goto err_805_init;
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}
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@ -18,6 +18,23 @@
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#include <linux/uaccess.h>
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#include <linux/err.h>
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/* 88pm80x chips have same definition for chip id register. */
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#define PM80X_CHIP_ID (0x00)
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#define PM80X_CHIP_ID_NUM(x) (((x) >> 5) & 0x7)
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#define PM80X_CHIP_ID_REVISION(x) ((x) & 0x1F)
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struct pm80x_chip_mapping {
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unsigned int id;
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int type;
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};
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static struct pm80x_chip_mapping chip_mapping[] = {
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/* 88PM800 chip id number */
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{0x3, CHIP_PM800},
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/* 88PM805 chip id number */
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{0x0, CHIP_PM805},
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};
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/*
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* workaround: some registers needed by pm805 are defined in pm800, so
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* need to use this global variable to maintain the relation between
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@ -31,12 +48,13 @@ const struct regmap_config pm80x_regmap_config = {
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};
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EXPORT_SYMBOL_GPL(pm80x_regmap_config);
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int pm80x_init(struct i2c_client *client,
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const struct i2c_device_id *id)
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int pm80x_init(struct i2c_client *client)
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{
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struct pm80x_chip *chip;
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struct regmap *map;
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int ret = 0;
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unsigned int val;
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int i, ret = 0;
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chip =
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devm_kzalloc(&client->dev, sizeof(struct pm80x_chip), GFP_KERNEL);
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@ -51,10 +69,6 @@ int pm80x_init(struct i2c_client *client,
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return ret;
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}
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chip->id = id->driver_data;
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if (chip->id < CHIP_PM800 || chip->id > CHIP_PM805)
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return -EINVAL;
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chip->client = client;
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chip->regmap = map;
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@ -64,6 +78,25 @@ int pm80x_init(struct i2c_client *client,
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dev_set_drvdata(chip->dev, chip);
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i2c_set_clientdata(chip->client, chip);
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ret = regmap_read(chip->regmap, PM80X_CHIP_ID, &val);
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if (ret < 0) {
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dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
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return ret;
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}
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for (i = 0; i < ARRAY_SIZE(chip_mapping); i++) {
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if (chip_mapping[i].id == PM80X_CHIP_ID_NUM(val)) {
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chip->type = chip_mapping[i].type;
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break;
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}
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}
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if (i == ARRAY_SIZE(chip_mapping)) {
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dev_err(chip->dev,
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"Failed to detect Marvell 88PM800:ChipID[0x%x]\n", val);
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return -EINVAL;
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}
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device_init_wakeup(&client->dev, 1);
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/*
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@ -17,7 +17,6 @@
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#include <linux/regmap.h>
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#include <linux/atomic.h>
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#define PM80X_VERSION_MASK (0xFF) /* 80X chip ID mask */
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enum {
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CHIP_INVALID = 0,
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CHIP_PM800,
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@ -299,8 +298,7 @@ struct pm80x_chip {
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struct regmap *regmap;
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struct regmap_irq_chip *regmap_irq_chip;
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struct regmap_irq_chip_data *irq_data;
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unsigned char version;
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int id;
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int type;
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int irq;
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int irq_mode;
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unsigned long wu_flag;
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@ -361,7 +359,6 @@ static inline int pm80x_dev_resume(struct device *dev)
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}
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#endif
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extern int pm80x_init(struct i2c_client *client,
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const struct i2c_device_id *id);
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extern int pm80x_init(struct i2c_client *client);
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extern int pm80x_deinit(void);
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#endif /* __LINUX_MFD_88PM80X_H */
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