From: Youngmin Nam <youngmin.nam@samsung.com>
Date: Fri, 24 Apr 2015 08:24:51 +0000 (+0900)
Subject: spi: s3c64xx: Add LPD powermode and update idle status register
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=cae0bf8fa08f09a40b66bc623e6aafcc17be26c7;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

spi: s3c64xx: Add LPD powermode and update idle status register

This patch adds LPD powermode and updates idle status register
when clock/power of IP is en/disabled to check LPD condition.

Change-Id: I6aeb2ede54181bddbfd92bfac1f6d493a95ee54d
Signed-off-by: Youngmin Nam <youngmin.nam@samsung.com>
---

diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index b6e7be0e3cdb..9e33f09cf2bb 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -28,6 +28,7 @@
 #include <linux/gpio.h>
 #include <linux/of.h>
 #include <linux/of_gpio.h>
+#include <mach/exynos-powermode.h>
 
 #include <linux/platform_data/spi-s3c64xx.h>
 #include <mach/exynos-fimc-is.h>
@@ -1598,6 +1599,9 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
 	sdd->sfr_start = mem_res->start;
 	sdd->is_probed = 0;
 	sdd->ops = NULL;
+
+	sdd->idle_ip_index = exynos_get_idle_ip_index(dev_name(&pdev->dev));
+
 	if (pdev->dev.of_node) {
 		ret = of_alias_get_id(pdev->dev.of_node, "spi");
 		if (ret < 0) {
@@ -1701,6 +1705,8 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
 		}
 	}
 #else
+	exynos_update_ip_idle_status(sdd->idle_ip_index, 0);
+
 	if (clk_prepare_enable(sdd->clk)) {
 		dev_err(&pdev->dev, "Couldn't enable clock 'spi'\n");
 		ret = -EBUSY;
@@ -1808,6 +1814,8 @@ static int s3c64xx_spi_remove(struct platform_device *pdev)
 
 	clk_disable_unprepare(sdd->clk);
 
+	exynos_update_ip_idle_status(sdd->idle_ip_index, 1);
+
 	platform_set_drvdata(pdev, NULL);
 	spi_master_put(master);
 
@@ -1834,6 +1842,7 @@ static int s3c64xx_spi_suspend_operation(struct device *dev)
 		/* Disable the clock */
 		clk_disable_unprepare(sdd->src_clk);
 		clk_disable_unprepare(sdd->clk);
+		exynos_update_ip_idle_status(sdd->idle_ip_index, 1);
 	}
 #endif
 	sdd->cur_speed = 0; /* Output Clock is stopped */
@@ -1850,6 +1859,7 @@ static int s3c64xx_spi_resume_operation(struct device *dev)
 
 	if (sci->domain == DOMAIN_TOP) {
 		/* Enable the clock */
+		exynos_update_ip_idle_status(sdd->idle_ip_index, 0);
 		clk_prepare_enable(sdd->src_clk);
 		clk_prepare_enable(sdd->clk);
 
@@ -1865,6 +1875,7 @@ static int s3c64xx_spi_resume_operation(struct device *dev)
 		/* Disable the clock */
 		clk_disable_unprepare(sdd->src_clk);
 		clk_disable_unprepare(sdd->clk);
+		exynos_update_ip_idle_status(sdd->idle_ip_index, 1);
 #endif
 	}
 
@@ -1976,6 +1987,8 @@ static int s3c64xx_spi_runtime_suspend(struct device *dev)
 	if (__clk_get_enable_count(sdd->src_clk))
 		clk_disable_unprepare(sdd->src_clk);
 
+	exynos_update_ip_idle_status(sdd->idle_ip_index, 1);
+
 	/* Free DMA channels */
 	if (sci->dma_mode == DMA_MODE && sdd->is_probed && sdd->ops != NULL) {
 	#ifdef CONFIG_ARM64
@@ -2013,12 +2026,14 @@ static int s3c64xx_spi_runtime_resume(struct device *dev)
 	}
 
 	if (sci->domain == DOMAIN_TOP) {
+		exynos_update_ip_idle_status(sdd->idle_ip_index, 0);
 		clk_prepare_enable(sdd->src_clk);
 		clk_prepare_enable(sdd->clk);
 	}
 
 #if defined(CONFIG_VIDEO_EXYNOS_FIMC_IS) || defined(CONFIG_VIDEO_EXYNOS_FIMC_IS2)
 	else if (sci->domain == DOMAIN_CAM1 || sci->domain == DOMAIN_ISP) {
+		exynos_update_ip_idle_status(sdd->idle_ip_index, 0);
 		clk_prepare_enable(sdd->src_clk);
 		clk_prepare_enable(sdd->clk);
 
diff --git a/include/linux/platform_data/spi-s3c64xx.h b/include/linux/platform_data/spi-s3c64xx.h
index 40a8c15c0ed0..b21aaee63188 100644
--- a/include/linux/platform_data/spi-s3c64xx.h
+++ b/include/linux/platform_data/spi-s3c64xx.h
@@ -144,6 +144,7 @@ struct s3c64xx_spi_driver_data {
 
 	int is_probed;
 	int spi_clkoff_time;
+	int idle_ip_index;
 };
 
 /**