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4d5fe0a362
immortalwrt/target/linux/rockchip/patches-6.6/031-04-v6.2-rtc-rk808-reduce-struct-rk808-usage.patch
Tianling Shen 4d5fe0a362
rockchip: move kernel files to 6.6 
Move kernel config and patches to kernel 6.6.

Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>
2024-04-07 17:28:06 +08:00

216 lines
7.6 KiB
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From 2e830ccc21eb67a4c2490279d907e5e9199e5156 Mon Sep 17 00:00:00 2001
From: Sebastian Reichel <sebastian.reichel@collabora.com>
Date: Thu, 20 Oct 2022 22:42:41 +0200
Subject: [PATCH] rtc: rk808: reduce 'struct rk808' usage
Reduce usage of 'struct rk808' (driver data of the parent MFD), so
that only the chip variant field is still being accessed directly.
This allows restructuring the MFD driver to support SPI based
PMICs.
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20221020204251.108565-4-sebastian.reichel@collabora.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
drivers/rtc/rtc-rk808.c | 47 ++++++++++++++++++-----------------------
1 file changed, 20 insertions(+), 27 deletions(-)
--- a/drivers/rtc/rtc-rk808.c
+++ b/drivers/rtc/rtc-rk808.c
@@ -14,7 +14,6 @@
#include <linux/bcd.h>
#include <linux/mfd/rk808.h>
#include <linux/platform_device.h>
-#include <linux/i2c.h>
/* RTC_CTRL_REG bitfields */
#define BIT_RTC_CTRL_REG_STOP_RTC_M BIT(0)
@@ -51,7 +50,7 @@ struct rk_rtc_compat_reg {
};
struct rk808_rtc {
- struct rk808 *rk808;
+ struct regmap *regmap;
struct rtc_device *rtc;
struct rk_rtc_compat_reg *creg;
int irq;
@@ -97,12 +96,11 @@ static void gregorian_to_rockchip(struct
static int rk808_rtc_readtime(struct device *dev, struct rtc_time *tm)
{
struct rk808_rtc *rk808_rtc = dev_get_drvdata(dev);
- struct rk808 *rk808 = rk808_rtc->rk808;
u8 rtc_data[NUM_TIME_REGS];
int ret;
/* Force an update of the shadowed registers right now */
- ret = regmap_update_bits(rk808->regmap, rk808_rtc->creg->ctrl_reg,
+ ret = regmap_update_bits(rk808_rtc->regmap, rk808_rtc->creg->ctrl_reg,
BIT_RTC_CTRL_REG_RTC_GET_TIME,
BIT_RTC_CTRL_REG_RTC_GET_TIME);
if (ret) {
@@ -116,7 +114,7 @@ static int rk808_rtc_readtime(struct dev
* 32khz. If we clear the GET_TIME bit here, the time of i2c transfer
* certainly more than 31.25us: 16 * 2.5us at 400kHz bus frequency.
*/
- ret = regmap_update_bits(rk808->regmap, rk808_rtc->creg->ctrl_reg,
+ ret = regmap_update_bits(rk808_rtc->regmap, rk808_rtc->creg->ctrl_reg,
BIT_RTC_CTRL_REG_RTC_GET_TIME,
0);
if (ret) {
@@ -124,7 +122,7 @@ static int rk808_rtc_readtime(struct dev
return ret;
}
- ret = regmap_bulk_read(rk808->regmap, rk808_rtc->creg->seconds_reg,
+ ret = regmap_bulk_read(rk808_rtc->regmap, rk808_rtc->creg->seconds_reg,
rtc_data, NUM_TIME_REGS);
if (ret) {
dev_err(dev, "Failed to bulk read rtc_data: %d\n", ret);
@@ -148,7 +146,6 @@ static int rk808_rtc_readtime(struct dev
static int rk808_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct rk808_rtc *rk808_rtc = dev_get_drvdata(dev);
- struct rk808 *rk808 = rk808_rtc->rk808;
u8 rtc_data[NUM_TIME_REGS];
int ret;
@@ -163,7 +160,7 @@ static int rk808_rtc_set_time(struct dev
rtc_data[6] = bin2bcd(tm->tm_wday);
/* Stop RTC while updating the RTC registers */
- ret = regmap_update_bits(rk808->regmap, rk808_rtc->creg->ctrl_reg,
+ ret = regmap_update_bits(rk808_rtc->regmap, rk808_rtc->creg->ctrl_reg,
BIT_RTC_CTRL_REG_STOP_RTC_M,
BIT_RTC_CTRL_REG_STOP_RTC_M);
if (ret) {
@@ -171,14 +168,14 @@ static int rk808_rtc_set_time(struct dev
return ret;
}
- ret = regmap_bulk_write(rk808->regmap, rk808_rtc->creg->seconds_reg,
+ ret = regmap_bulk_write(rk808_rtc->regmap, rk808_rtc->creg->seconds_reg,
rtc_data, NUM_TIME_REGS);
if (ret) {
dev_err(dev, "Failed to bull write rtc_data: %d\n", ret);
return ret;
}
/* Start RTC again */
- ret = regmap_update_bits(rk808->regmap, rk808_rtc->creg->ctrl_reg,
+ ret = regmap_update_bits(rk808_rtc->regmap, rk808_rtc->creg->ctrl_reg,
BIT_RTC_CTRL_REG_STOP_RTC_M, 0);
if (ret) {
dev_err(dev, "Failed to update RTC control: %d\n", ret);
@@ -191,12 +188,11 @@ static int rk808_rtc_set_time(struct dev
static int rk808_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct rk808_rtc *rk808_rtc = dev_get_drvdata(dev);
- struct rk808 *rk808 = rk808_rtc->rk808;
u8 alrm_data[NUM_ALARM_REGS];
uint32_t int_reg;
int ret;
- ret = regmap_bulk_read(rk808->regmap,
+ ret = regmap_bulk_read(rk808_rtc->regmap,
rk808_rtc->creg->alarm_seconds_reg,
alrm_data, NUM_ALARM_REGS);
if (ret) {
@@ -212,7 +208,7 @@ static int rk808_rtc_readalarm(struct de
alrm->time.tm_year = (bcd2bin(alrm_data[5] & YEARS_REG_MSK)) + 100;
rockchip_to_gregorian(&alrm->time);
- ret = regmap_read(rk808->regmap, rk808_rtc->creg->int_reg, &int_reg);
+ ret = regmap_read(rk808_rtc->regmap, rk808_rtc->creg->int_reg, &int_reg);
if (ret) {
dev_err(dev, "Failed to read RTC INT REG: %d\n", ret);
return ret;
@@ -228,10 +224,9 @@ static int rk808_rtc_readalarm(struct de
static int rk808_rtc_stop_alarm(struct rk808_rtc *rk808_rtc)
{
- struct rk808 *rk808 = rk808_rtc->rk808;
int ret;
- ret = regmap_update_bits(rk808->regmap, rk808_rtc->creg->int_reg,
+ ret = regmap_update_bits(rk808_rtc->regmap, rk808_rtc->creg->int_reg,
BIT_RTC_INTERRUPTS_REG_IT_ALARM_M, 0);
return ret;
@@ -239,10 +234,9 @@ static int rk808_rtc_stop_alarm(struct r
static int rk808_rtc_start_alarm(struct rk808_rtc *rk808_rtc)
{
- struct rk808 *rk808 = rk808_rtc->rk808;
int ret;
- ret = regmap_update_bits(rk808->regmap, rk808_rtc->creg->int_reg,
+ ret = regmap_update_bits(rk808_rtc->regmap, rk808_rtc->creg->int_reg,
BIT_RTC_INTERRUPTS_REG_IT_ALARM_M,
BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
@@ -252,7 +246,6 @@ static int rk808_rtc_start_alarm(struct
static int rk808_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct rk808_rtc *rk808_rtc = dev_get_drvdata(dev);
- struct rk808 *rk808 = rk808_rtc->rk808;
u8 alrm_data[NUM_ALARM_REGS];
int ret;
@@ -272,7 +265,7 @@ static int rk808_rtc_setalarm(struct dev
alrm_data[4] = bin2bcd(alrm->time.tm_mon + 1);
alrm_data[5] = bin2bcd(alrm->time.tm_year - 100);
- ret = regmap_bulk_write(rk808->regmap,
+ ret = regmap_bulk_write(rk808_rtc->regmap,
rk808_rtc->creg->alarm_seconds_reg,
alrm_data, NUM_ALARM_REGS);
if (ret) {
@@ -313,20 +306,18 @@ static int rk808_rtc_alarm_irq_enable(st
static irqreturn_t rk808_alarm_irq(int irq, void *data)
{
struct rk808_rtc *rk808_rtc = data;
- struct rk808 *rk808 = rk808_rtc->rk808;
- struct i2c_client *client = rk808->i2c;
int ret;
- ret = regmap_write(rk808->regmap, rk808_rtc->creg->status_reg,
+ ret = regmap_write(rk808_rtc->regmap, rk808_rtc->creg->status_reg,
RTC_STATUS_MASK);
if (ret) {
- dev_err(&client->dev,
+ dev_err(&rk808_rtc->rtc->dev,
"%s:Failed to update RTC status: %d\n", __func__, ret);
return ret;
}
rtc_update_irq(rk808_rtc->rtc, 1, RTC_IRQF | RTC_AF);
- dev_dbg(&client->dev,
+ dev_dbg(&rk808_rtc->rtc->dev,
"%s:irq=%d\n", __func__, irq);
return IRQ_HANDLED;
}
@@ -404,10 +395,12 @@ static int rk808_rtc_probe(struct platfo
break;
}
platform_set_drvdata(pdev, rk808_rtc);
- rk808_rtc->rk808 = rk808;
+ rk808_rtc->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+ if (!rk808_rtc->regmap)
+ return -ENODEV;
/* start rtc running by default, and use shadowed timer. */
- ret = regmap_update_bits(rk808->regmap, rk808_rtc->creg->ctrl_reg,
+ ret = regmap_update_bits(rk808_rtc->regmap, rk808_rtc->creg->ctrl_reg,
BIT_RTC_CTRL_REG_STOP_RTC_M |
BIT_RTC_CTRL_REG_RTC_READSEL_M,
BIT_RTC_CTRL_REG_RTC_READSEL_M);
@@ -417,7 +410,7 @@ static int rk808_rtc_probe(struct platfo
return ret;
}
- ret = regmap_write(rk808->regmap, rk808_rtc->creg->status_reg,
+ ret = regmap_write(rk808_rtc->regmap, rk808_rtc->creg->status_reg,
RTC_STATUS_MASK);
if (ret) {
dev_err(&pdev->dev,
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