From: Marek Szyprowski <m.szyprowski@samsung.com>
To: linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org,
linux-samsung-soc@vger.kernel.org
Cc: Marek Szyprowski <m.szyprowski@samsung.com>,
Krzysztof Kozlowski <krzk@kernel.org>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
Beomho Seo <beomho.seo@samsung.com>,
Seung-Woo Kim <sw0312.kim@samsung.com>,
Sylwester Nawrocki <s.nawrocki@samsung.com>,
Lee Jones <lee.jones@linaro.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH v2 1/4] mfd: exynos-lpass: Enable UART module support
Date: Fri, 21 Dec 2018 15:32:28 +0100 [thread overview]
Message-ID: <20181221143228.934-1-m.szyprowski@samsung.com> (raw)
In-Reply-To: <20181221103907.GK13248@dell>
From: Beomho Seo <beomho.seo@samsung.com>
This patch enables proper interrupts routing between UART module
in Exynos Audio SubSystem and the rest of the SoC. This routing is
completely transparent for UART device and CPU/GIC. UART driver requests
interrupts from the respective controller and enables/masks/handles it
by itself via standard methods.
There are boards (for example TM2), which use UART module in Exynos Audio
SubStem for communication with BlueTooth chip.
Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
[mszyprow: rephrased commit message, added UART reset]
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
---
Changelog
v2:
- rephrased and extended commit message
---
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
next prev parent reply other threads:[~2018-12-21 14:32 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20181214113415eucas1p16dd61a4312d88216cb0d737887c751b7@eucas1p1.samsung.com>
2018-12-14 11:34 ` [PATCH 0/4] Samsung TM2(e): add Bluetooth support (resend) Marek Szyprowski
[not found] ` <CGME20181214113416eucas1p2002adf7b5438c525c34ff3274ceacbd1@eucas1p2.samsung.com>
2018-12-14 11:34 ` [PATCH 1/4] mfd: exynos-lpass: Enable UART module support Marek Szyprowski
2018-12-21 10:13 ` Lee Jones
2018-12-21 10:27 ` Marek Szyprowski
2018-12-21 10:39 ` Lee Jones
[not found] ` <CGME20181221143250eucas1p120b2d4dbcb990c5893e0fa4c6a7dd861@eucas1p1.samsung.com>
2018-12-21 14:32 ` Marek Szyprowski [this message]
2018-12-21 14:56 ` [PATCH v2 " Lee Jones
[not found] ` <CGME20181214113417eucas1p2624705c077ae79267082bbf4628951ed@eucas1p2.samsung.com>
2018-12-14 11:34 ` [PATCH 2/4] tty: serial: samsung: Properly set flags in autoCTS mode Marek Szyprowski
[not found] ` <CGME20181214113418eucas1p2bfb6f0d04010e73f6ca35c3a6664b316@eucas1p2.samsung.com>
2018-12-14 11:34 ` [PATCH 3/4] tty: serial: samsung: Increase maximum baudrate Marek Szyprowski
2018-12-21 10:15 ` Lee Jones
2018-12-21 10:23 ` Marek Szyprowski
2018-12-21 10:34 ` Lee Jones
[not found] ` <CGME20181214113419eucas1p2473172a49bf798ddd95265fa31125d96@eucas1p2.samsung.com>
2018-12-14 11:34 ` [PATCH 4/4] arm64: dts: exynos: Add Bluetooth chip to TM2(e) boards Marek Szyprowski
2018-12-17 21:23 ` Krzysztof Kozlowski
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