Unverified Commit 0bc7b8a2 authored Jul 06, 2020 by Marc Kleine-Budde Committed by Mark Brown Jul 07, 2020

spi: spi-sun6i: sun6i_spi_transfer_one(): report effectivly used speed_hz of transfer



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:

    5d7e2b5e spi: core: allow reporting the effectivly used speed_hz for a transfer

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20200706143443.9855-3-mkl@pengutronix.de


Signed-off-by: Mark Brown <broonie@kernel.org>

parent ed7815db

drivers/spi/spi-sun6i.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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);

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