rtc: gemini/ftrtc010: rename driver and symbols

The Gemini RTC is actually a generic IP block from Faraday
Technology names FTRTC010. Rename the driver file and all
symbols to match this IP name.

The relationship can be clearly seen in the U-Boot driver
posted by Po-Yu Chuang for the Faraday A320 board:
https://lists.denx.de/pipermail/u-boot/2009-September/061326.html

Remove the dependency on ARCH_GEMINI but select the driver
for ARCH_GEMINI so we get a smooth transition. The IP block
is synthsized on different silicon and architectures.

Cc: Po-Yu Chuang <ratbert@faraday-tech.com>
Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

1 files changed, 0 insertions, 207 deletions

diff --git a/drivers/rtc/rtc-gemini.c b/drivers/rtc/rtc-gemini.c
deleted file mode 100644
index cf766e01832a..000000000000
--- a/drivers/rtc/rtc-gemini.c
+++ /dev/null
@@ -1,207 +0,0 @@
-/*
- *  Gemini OnChip RTC
- *
- *  Copyright (C) 2009 Janos Laube <janos.dev@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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.
- *
- * Original code for older kernel 2.6.15 are from Stormlinksemi
- * first update from Janos Laube for > 2.6.29 kernels
- *
- * checkpatch fixes and usage of rtc-lib code
- * Hans Ulli Kroll <ulli.kroll@googlemail.com>
- */
-
-#include <linux/rtc.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/platform_device.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/clk.h>
-
-#define DRV_NAME        "rtc-gemini"
-
-MODULE_AUTHOR("Hans Ulli Kroll <ulli.kroll@googlemail.com>");
-MODULE_DESCRIPTION("RTC driver for Gemini SoC");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:" DRV_NAME);
-
-struct gemini_rtc {
-	struct rtc_device	*rtc_dev;
-	void __iomem		*rtc_base;
-	int			rtc_irq;
-	struct clk		*pclk;
-	struct clk		*extclk;
-};
-
-enum gemini_rtc_offsets {
-	GEMINI_RTC_SECOND	= 0x00,
-	GEMINI_RTC_MINUTE	= 0x04,
-	GEMINI_RTC_HOUR		= 0x08,
-	GEMINI_RTC_DAYS		= 0x0C,
-	GEMINI_RTC_ALARM_SECOND	= 0x10,
-	GEMINI_RTC_ALARM_MINUTE	= 0x14,
-	GEMINI_RTC_ALARM_HOUR	= 0x18,
-	GEMINI_RTC_RECORD	= 0x1C,
-	GEMINI_RTC_CR		= 0x20
-};
-
-static irqreturn_t gemini_rtc_interrupt(int irq, void *dev)
-{
-	return IRQ_HANDLED;
-}
-
-/*
- * Looks like the RTC in the Gemini SoC is (totaly) broken
- * We can't read/write directly the time from RTC registers.
- * We must do some "offset" calculation to get the real time
- *
- * This FIX works pretty fine and Stormlinksemi aka Cortina-Networks does
- * the same thing, without the rtc-lib.c calls.
- */
-
-static int gemini_rtc_read_time(struct device *dev, struct rtc_time *tm)
-{
-	struct gemini_rtc *rtc = dev_get_drvdata(dev);
-
-	unsigned int  days, hour, min, sec;
-	unsigned long offset, time;
-
-	sec  = readl(rtc->rtc_base + GEMINI_RTC_SECOND);
-	min  = readl(rtc->rtc_base + GEMINI_RTC_MINUTE);
-	hour = readl(rtc->rtc_base + GEMINI_RTC_HOUR);
-	days = readl(rtc->rtc_base + GEMINI_RTC_DAYS);
-	offset = readl(rtc->rtc_base + GEMINI_RTC_RECORD);
-
-	time = offset + days * 86400 + hour * 3600 + min * 60 + sec;
-
-	rtc_time_to_tm(time, tm);
-
-	return 0;
-}
-
-static int gemini_rtc_set_time(struct device *dev, struct rtc_time *tm)
-{
-	struct gemini_rtc *rtc = dev_get_drvdata(dev);
-	unsigned int sec, min, hour, day;
-	unsigned long offset, time;
-
-	if (tm->tm_year >= 2148)	/* EPOCH Year + 179 */
-		return -EINVAL;
-
-	rtc_tm_to_time(tm, &time);
-
-	sec = readl(rtc->rtc_base + GEMINI_RTC_SECOND);
-	min = readl(rtc->rtc_base + GEMINI_RTC_MINUTE);
-	hour = readl(rtc->rtc_base + GEMINI_RTC_HOUR);
-	day = readl(rtc->rtc_base + GEMINI_RTC_DAYS);
-
-	offset = time - (day * 86400 + hour * 3600 + min * 60 + sec);
-
-	writel(offset, rtc->rtc_base + GEMINI_RTC_RECORD);
-	writel(0x01, rtc->rtc_base + GEMINI_RTC_CR);
-
-	return 0;
-}
-
-static const struct rtc_class_ops gemini_rtc_ops = {
-	.read_time     = gemini_rtc_read_time,
-	.set_time      = gemini_rtc_set_time,
-};
-
-static int gemini_rtc_probe(struct platform_device *pdev)
-{
-	struct gemini_rtc *rtc;
-	struct device *dev = &pdev->dev;
-	struct resource *res;
-	int ret;
-
-	rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
-	if (unlikely(!rtc))
-		return -ENOMEM;
-	platform_set_drvdata(pdev, rtc);
-
-	rtc->pclk = devm_clk_get(dev, "PCLK");
-	if (IS_ERR(rtc->pclk)) {
-		dev_err(dev, "could not get PCLK\n");
-	} else {
-		ret = clk_prepare_enable(rtc->pclk);
-		if (ret) {
-			dev_err(dev, "failed to enable PCLK\n");
-			return ret;
-		}
-	}
-	rtc->extclk = devm_clk_get(dev, "EXTCLK");
-	if (IS_ERR(rtc->extclk)) {
-		dev_err(dev, "could not get EXTCLK\n");
-	} else {
-		ret = clk_prepare_enable(rtc->extclk);
-		if (ret) {
-			dev_err(dev, "failed to enable EXTCLK\n");
-			return ret;
-		}
-	}
-
-	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (!res)
-		return -ENODEV;
-
-	rtc->rtc_irq = res->start;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -ENODEV;
-
-	rtc->rtc_base = devm_ioremap(dev, res->start,
-				     resource_size(res));
-	if (!rtc->rtc_base)
-		return -ENOMEM;
-
-	ret = devm_request_irq(dev, rtc->rtc_irq, gemini_rtc_interrupt,
-			       IRQF_SHARED, pdev->name, dev);
-	if (unlikely(ret))
-		return ret;
-
-	rtc->rtc_dev = rtc_device_register(pdev->name, dev,
-					   &gemini_rtc_ops, THIS_MODULE);
-	return PTR_ERR_OR_ZERO(rtc->rtc_dev);
-}
-
-static int gemini_rtc_remove(struct platform_device *pdev)
-{
-	struct gemini_rtc *rtc = platform_get_drvdata(pdev);
-
-	if (!IS_ERR(rtc->extclk))
-		clk_disable_unprepare(rtc->extclk);
-	if (!IS_ERR(rtc->pclk))
-		clk_disable_unprepare(rtc->pclk);
-	rtc_device_unregister(rtc->rtc_dev);
-
-	return 0;
-}
-
-static const struct of_device_id gemini_rtc_dt_match[] = {
-	{ .compatible = "cortina,gemini-rtc" },
-	{ }
-};
-MODULE_DEVICE_TABLE(of, gemini_rtc_dt_match);
-
-static struct platform_driver gemini_rtc_driver = {
-	.driver		= {
-		.name	= DRV_NAME,
-		.of_match_table = gemini_rtc_dt_match,
-	},
-	.probe		= gemini_rtc_probe,
-	.remove		= gemini_rtc_remove,
-};
-
-module_platform_driver_probe(gemini_rtc_driver, gemini_rtc_probe);