Commit 0bc7b8a2 authored by Marc Kleine-Budde's avatar Marc Kleine-Budde Committed by Mark Brown

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: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
Acked-by: default avatarMaxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20200706143443.9855-3-mkl@pengutronix.deSigned-off-by: default avatarMark Brown <broonie@kernel.org>
parent ed7815db
...@@ -291,9 +291,11 @@ static int sun6i_spi_transfer_one(struct spi_master *master, ...@@ -291,9 +291,11 @@ static int sun6i_spi_transfer_one(struct spi_master *master,
div_cdr2 = DIV_ROUND_UP(div_cdr1, 2); div_cdr2 = DIV_ROUND_UP(div_cdr1, 2);
if (div_cdr2 <= (SUN6I_CLK_CTL_CDR2_MASK + 1)) { if (div_cdr2 <= (SUN6I_CLK_CTL_CDR2_MASK + 1)) {
reg = SUN6I_CLK_CTL_CDR2(div_cdr2 - 1) | SUN6I_CLK_CTL_DRS; reg = SUN6I_CLK_CTL_CDR2(div_cdr2 - 1) | SUN6I_CLK_CTL_DRS;
tfr->effective_speed_hz = mclk_rate / (2 * div_cdr2);
} else { } else {
div = min(SUN6I_CLK_CTL_CDR1_MASK, order_base_2(div_cdr1)); div = min(SUN6I_CLK_CTL_CDR1_MASK, order_base_2(div_cdr1));
reg = SUN6I_CLK_CTL_CDR1(div); reg = SUN6I_CLK_CTL_CDR1(div);
tfr->effective_speed_hz = mclk_rate / (1 << div);
} }
sun6i_spi_write(sspi, SUN6I_CLK_CTL_REG, reg); sun6i_spi_write(sspi, SUN6I_CLK_CTL_REG, reg);
......
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