[2/9] spi: spi-sun6i: sun6i_spi_transfer_one(): report effectivly used speed_hz of transfer
diff mbox series

Message ID 20200706071801.558394-3-mkl@pengutronix.de
State New
Headers show
Series
  • spi: spi-sun6i: One fix and some improvements
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Commit Message

Marc Kleine-Budde July 6, 2020, 7:17 a.m. UTC
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

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
 drivers/spi/spi-sun6i.c | 2 ++
 1 file changed, 2 insertions(+)

Patch
diff mbox series

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);