linux-kernel - [PATCH 1/4] mfd: exynos-lpass: Enable UART module support

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Date:   Fri, 14 Dec 2018 12:34:07 +0100
From:   Marek Szyprowski <m.szyprowski@...sung.com>
To:     linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org
Cc:     Marek Szyprowski <m.szyprowski@...sung.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Beomho Seo <beomho.seo@...sung.com>,
        Seung-Woo Kim <sw0312.kim@...sung.com>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Lee Jones <lee.jones@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH 1/4] mfd: exynos-lpass: Enable UART module support

From: Beomho Seo <beomho.seo@...sung.com>

This patch enables support for UART module in Exynos Audio SubSystem.
There are boards (for example TM2), which use it for communication with
bluetooth chip.

Signed-off-by: Beomho Seo <beomho.seo@...sung.com>
[mszyprow: rephrased commit message, added UART reset]
Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@...sung.com>
---
 drivers/mfd/exynos-lpass.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/mfd/exynos-lpass.c b/drivers/mfd/exynos-lpass.c
index ca829f85672f..2713de989f05 100644
--- a/drivers/mfd/exynos-lpass.c
+++ b/drivers/mfd/exynos-lpass.c
@@ -82,11 +82,13 @@ static void exynos_lpass_enable(struct exynos_lpass *lpass)
 		     LPASS_INTR_SFR | LPASS_INTR_DMA | LPASS_INTR_I2S);
 
 	regmap_write(lpass->top, SFR_LPASS_INTR_CPU_MASK,
-		     LPASS_INTR_SFR | LPASS_INTR_DMA | LPASS_INTR_I2S);
+		     LPASS_INTR_SFR | LPASS_INTR_DMA | LPASS_INTR_I2S |
+		     LPASS_INTR_UART);
 
 	exynos_lpass_core_sw_reset(lpass, LPASS_I2S_SW_RESET);
 	exynos_lpass_core_sw_reset(lpass, LPASS_DMA_SW_RESET);
 	exynos_lpass_core_sw_reset(lpass, LPASS_MEM_SW_RESET);
+	exynos_lpass_core_sw_reset(lpass, LPASS_UART_SW_RESET);
 }
 
 static void exynos_lpass_disable(struct exynos_lpass *lpass)
-- 
2.17.1