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Subject[PATCH] mfd: pm8921: Remove pm8xxx API now that sub-devices use regmap
Date
The pm8xxx read/write wrappers are no longer necessary now that
all the sub-device drivers are using the regmap API. Remove it.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---

Based on Linus' tip as of a7963eb7f4c4 (Merge branch 'for_linus' of
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs, 2014-04-07)

drivers/mfd/pm8921-core.c | 123 +---------------------------------------
include/linux/mfd/pm8xxx/core.h | 81 --------------------------
2 files changed, 2 insertions(+), 202 deletions(-)
delete mode 100644 include/linux/mfd/pm8xxx/core.h

diff --git a/drivers/mfd/pm8921-core.c b/drivers/mfd/pm8921-core.c
index b97a97187ae9..959513803542 100644
--- a/drivers/mfd/pm8921-core.c
+++ b/drivers/mfd/pm8921-core.c
@@ -26,7 +26,6 @@
#include <linux/regmap.h>
#include <linux/of_platform.h>
#include <linux/mfd/core.h>
-#include <linux/mfd/pm8xxx/core.h>

#define SSBI_REG_ADDR_IRQ_BASE 0x1BB

@@ -57,7 +56,6 @@
#define PM8921_NR_IRQS 256

struct pm_irq_chip {
- struct device *dev;
struct regmap *regmap;
spinlock_t pm_irq_lock;
struct irq_domain *irqdomain;
@@ -67,11 +65,6 @@ struct pm_irq_chip {
u8 config[0];
};

-struct pm8921 {
- struct device *dev;
- struct pm_irq_chip *irq_chip;
-};
-
static int pm8xxx_read_block_irq(struct pm_irq_chip *chip, unsigned int bp,
unsigned int *ip)
{
@@ -255,55 +248,6 @@ static struct irq_chip pm8xxx_irq_chip = {
.flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE,
};

-/**
- * pm8xxx_get_irq_stat - get the status of the irq line
- * @chip: pointer to identify a pmic irq controller
- * @irq: the irq number
- *
- * The pm8xxx gpio and mpp rely on the interrupt block to read
- * the values on their pins. This function is to facilitate reading
- * the status of a gpio or an mpp line. The caller has to convert the
- * gpio number to irq number.
- *
- * RETURNS:
- * an int indicating the value read on that line
- */
-static int pm8xxx_get_irq_stat(struct pm_irq_chip *chip, int irq)
-{
- int pmirq, rc;
- unsigned int block, bits, bit;
- unsigned long flags;
- struct irq_data *irq_data = irq_get_irq_data(irq);
-
- pmirq = irq_data->hwirq;
-
- block = pmirq / 8;
- bit = pmirq % 8;
-
- spin_lock_irqsave(&chip->pm_irq_lock, flags);
-
- rc = regmap_write(chip->regmap, SSBI_REG_ADDR_IRQ_BLK_SEL, block);
- if (rc) {
- pr_err("Failed Selecting block irq=%d pmirq=%d blk=%d rc=%d\n",
- irq, pmirq, block, rc);
- goto bail_out;
- }
-
- rc = regmap_read(chip->regmap, SSBI_REG_ADDR_IRQ_RT_STATUS, &bits);
- if (rc) {
- pr_err("Failed Configuring irq=%d pmirq=%d blk=%d rc=%d\n",
- irq, pmirq, block, rc);
- goto bail_out;
- }
-
- rc = (bits & (1 << bit)) ? 1 : 0;
-
-bail_out:
- spin_unlock_irqrestore(&chip->pm_irq_lock, flags);
-
- return rc;
-}
-
static int pm8xxx_irq_domain_map(struct irq_domain *d, unsigned int irq,
irq_hw_number_t hwirq)
{
@@ -324,56 +268,6 @@ static const struct irq_domain_ops pm8xxx_irq_domain_ops = {
.map = pm8xxx_irq_domain_map,
};

-static int pm8921_readb(const struct device *dev, u16 addr, u8 *val)
-{
- const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev);
- const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data;
-
- return ssbi_read(pmic->dev->parent, addr, val, 1);
-}
-
-static int pm8921_writeb(const struct device *dev, u16 addr, u8 val)
-{
- const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev);
- const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data;
-
- return ssbi_write(pmic->dev->parent, addr, &val, 1);
-}
-
-static int pm8921_read_buf(const struct device *dev, u16 addr, u8 *buf,
- int cnt)
-{
- const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev);
- const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data;
-
- return ssbi_read(pmic->dev->parent, addr, buf, cnt);
-}
-
-static int pm8921_write_buf(const struct device *dev, u16 addr, u8 *buf,
- int cnt)
-{
- const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev);
- const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data;
-
- return ssbi_write(pmic->dev->parent, addr, buf, cnt);
-}
-
-static int pm8921_read_irq_stat(const struct device *dev, int irq)
-{
- const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev);
- const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data;
-
- return pm8xxx_get_irq_stat(pmic->irq_chip, irq);
-}
-
-static struct pm8xxx_drvdata pm8921_drvdata = {
- .pmic_readb = pm8921_readb,
- .pmic_writeb = pm8921_writeb,
- .pmic_read_buf = pm8921_read_buf,
- .pmic_write_buf = pm8921_write_buf,
- .pmic_read_irq_stat = pm8921_read_irq_stat,
-};
-
static const struct regmap_config ssbi_regmap_config = {
.reg_bits = 16,
.val_bits = 8,
@@ -392,7 +286,6 @@ MODULE_DEVICE_TABLE(of, pm8921_id_table);

static int pm8921_probe(struct platform_device *pdev)
{
- struct pm8921 *pmic;
struct regmap *regmap;
int irq, rc;
unsigned int val;
@@ -404,12 +297,6 @@ static int pm8921_probe(struct platform_device *pdev)
if (irq < 0)
return irq;

- pmic = devm_kzalloc(&pdev->dev, sizeof(struct pm8921), GFP_KERNEL);
- if (!pmic) {
- pr_err("Cannot alloc pm8921 struct\n");
- return -ENOMEM;
- }
-
regmap = devm_regmap_init(&pdev->dev, NULL, pdev->dev.parent,
&ssbi_regmap_config);
if (IS_ERR(regmap))
@@ -434,18 +321,13 @@ static int pm8921_probe(struct platform_device *pdev)
pr_info("PMIC revision 2: %02X\n", val);
rev |= val << BITS_PER_BYTE;

- pmic->dev = &pdev->dev;
- pm8921_drvdata.pm_chip_data = pmic;
- platform_set_drvdata(pdev, &pm8921_drvdata);
-
chip = devm_kzalloc(&pdev->dev, sizeof(*chip) +
sizeof(chip->config[0]) * nirqs,
GFP_KERNEL);
if (!chip)
return -ENOMEM;

- pmic->irq_chip = chip;
- chip->dev = &pdev->dev;
+ platform_set_drvdata(pdev, chip);
chip->regmap = regmap;
chip->num_irqs = nirqs;
chip->num_blocks = DIV_ROUND_UP(chip->num_irqs, 8);
@@ -481,8 +363,7 @@ static int pm8921_remove_child(struct device *dev, void *unused)
static int pm8921_remove(struct platform_device *pdev)
{
int irq = platform_get_irq(pdev, 0);
- struct pm8921 *pmic = pm8921_drvdata.pm_chip_data;
- struct pm_irq_chip *chip = pmic->irq_chip;
+ struct pm_irq_chip *chip = platform_get_drvdata(pdev);

device_for_each_child(&pdev->dev, NULL, pm8921_remove_child);
irq_set_chained_handler(irq, NULL);
diff --git a/include/linux/mfd/pm8xxx/core.h b/include/linux/mfd/pm8xxx/core.h
deleted file mode 100644
index bd2f4f64e931..000000000000
--- a/include/linux/mfd/pm8xxx/core.h
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-/*
- * Qualcomm PMIC 8xxx driver header file
- *
- */
-
-#ifndef __MFD_PM8XXX_CORE_H
-#define __MFD_PM8XXX_CORE_H
-
-#include <linux/mfd/core.h>
-
-struct pm8xxx_drvdata {
- int (*pmic_readb) (const struct device *dev, u16 addr, u8 *val);
- int (*pmic_writeb) (const struct device *dev, u16 addr, u8 val);
- int (*pmic_read_buf) (const struct device *dev, u16 addr, u8 *buf,
- int n);
- int (*pmic_write_buf) (const struct device *dev, u16 addr, u8 *buf,
- int n);
- int (*pmic_read_irq_stat) (const struct device *dev, int irq);
- void *pm_chip_data;
-};
-
-static inline int pm8xxx_readb(const struct device *dev, u16 addr, u8 *val)
-{
- struct pm8xxx_drvdata *dd = dev_get_drvdata(dev);
-
- if (!dd)
- return -EINVAL;
- return dd->pmic_readb(dev, addr, val);
-}
-
-static inline int pm8xxx_writeb(const struct device *dev, u16 addr, u8 val)
-{
- struct pm8xxx_drvdata *dd = dev_get_drvdata(dev);
-
- if (!dd)
- return -EINVAL;
- return dd->pmic_writeb(dev, addr, val);
-}
-
-static inline int pm8xxx_read_buf(const struct device *dev, u16 addr, u8 *buf,
- int n)
-{
- struct pm8xxx_drvdata *dd = dev_get_drvdata(dev);
-
- if (!dd)
- return -EINVAL;
- return dd->pmic_read_buf(dev, addr, buf, n);
-}
-
-static inline int pm8xxx_write_buf(const struct device *dev, u16 addr, u8 *buf,
- int n)
-{
- struct pm8xxx_drvdata *dd = dev_get_drvdata(dev);
-
- if (!dd)
- return -EINVAL;
- return dd->pmic_write_buf(dev, addr, buf, n);
-}
-
-static inline int pm8xxx_read_irq_stat(const struct device *dev, int irq)
-{
- struct pm8xxx_drvdata *dd = dev_get_drvdata(dev);
-
- if (!dd)
- return -EINVAL;
- return dd->pmic_read_irq_stat(dev, irq);
-}
-
-#endif
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation


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