From: Marc Kleine-Budde <mkl@pengutronix.de>
To: Mark Brown <broonie@kernel.org>
Cc: Maxime Ripard <mripard@kernel.org>,
linux-spi@vger.kernel.org, Chen-Yu Tsai <wens@csie.org>,
Marc Kleine-Budde <mkl@pengutronix.de>,
kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 02/10] spi: spi-sun6i: sun6i_spi_transfer_one(): report effectivly used speed_hz of transfer
Date: Mon, 6 Jul 2020 16:34:35 +0200 [thread overview]
Message-ID: <20200706143443.9855-3-mkl@pengutronix.de> (raw)
In-Reply-To: <20200706143443.9855-1-mkl@pengutronix.de>
This patch implementes the reporting of the effectivly used speed_hz for the
transfer by setting tfr->effective_speed_hz.
See the following patch, which adds this feature to the SPI core for more
information:
5d7e2b5ed585 spi: core: allow reporting the effectivly used speed_hz for a transfer
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
drivers/spi/spi-sun6i.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/spi/spi-sun6i.c b/drivers/spi/spi-sun6i.c
index fa11cc0e809b..64b4d8077010 100644
--- a/drivers/spi/spi-sun6i.c
+++ b/drivers/spi/spi-sun6i.c
@@ -291,9 +291,11 @@ static int sun6i_spi_transfer_one(struct spi_master *master,
div_cdr2 = DIV_ROUND_UP(div_cdr1, 2);
if (div_cdr2 <= (SUN6I_CLK_CTL_CDR2_MASK + 1)) {
reg = SUN6I_CLK_CTL_CDR2(div_cdr2 - 1) | SUN6I_CLK_CTL_DRS;
+ tfr->effective_speed_hz = mclk_rate / (2 * div_cdr2);
} else {
div = min(SUN6I_CLK_CTL_CDR1_MASK, order_base_2(div_cdr1));
reg = SUN6I_CLK_CTL_CDR1(div);
+ tfr->effective_speed_hz = mclk_rate / (1 << div);
}
sun6i_spi_write(sspi, SUN6I_CLK_CTL_REG, reg);
--
2.27.0
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next prev parent reply other threads:[~2020-07-06 14:36 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-06 14:34 [PATCH v2 00/10] spi: spi-sun6i: One fix and some improvements Marc Kleine-Budde
2020-07-06 14:34 ` [PATCH v2 01/10] spi: spi-sun6i: sun6i_spi_transfer_one(): fix setting of clock rate Marc Kleine-Budde
2020-07-06 14:34 ` Marc Kleine-Budde [this message]
2020-07-06 14:34 ` [PATCH v2 03/10] spi: spi-sun6i: sun6i_spi_transfer_one(): remove useless goto Marc Kleine-Budde
2020-07-06 14:34 ` [PATCH v2 04/10] spi: spi-sun6i: sun6i_spi_transfer_one(): remove not needed masking of transfer length Marc Kleine-Budde
2020-07-06 14:34 ` [PATCH v2 05/10] spi: spi-sun6i: sun6i_spi_get_tx_fifo_count: Convert manual shift+mask to FIELD_GET() Marc Kleine-Budde
2020-07-06 14:34 ` [PATCH v2 06/10] spi: spi-sun6i: sun6i_spi_drain_fifo(): introduce sun6i_spi_get_rx_fifo_count() and make use of it Marc Kleine-Budde
2020-07-06 14:34 ` [PATCH v2 07/10] spi: spi-sun6i: sun6i_spi_drain_fifo(): remove not needed length argument Marc Kleine-Budde
2020-07-06 14:34 ` [PATCH v2 08/10] spi: spi-sun6i: sun6i_spi_fill_fifo(): " Marc Kleine-Budde
2020-07-06 14:34 ` [PATCH v2 09/10] spi: spi-sun6i: sun6i_spi_transfer_one(): collate write to Interrupt Control Register Marc Kleine-Budde
2020-07-06 14:34 ` [PATCH v2 10/10] spi: spi-sun6i: sun6i_spi_transfer_one(): enable RF_RDY interrupt only if needed Marc Kleine-Budde
2020-07-06 15:40 ` [PATCH v2 00/10] spi: spi-sun6i: One fix and some improvements Mark Brown
2020-07-06 18:52 ` Mark Brown
2020-07-06 19:02 ` Mark Brown
2020-07-07 14:17 ` Mark Brown
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