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spi: rzv2m-csi: Get rid of the x_trg{_words} tables

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Table x_trg can be replaced with ilog2(), and table x_trg_words
can be replaced with rounddown_pow_of_two().
Replace the tables usage with the corresponding macros.
While at it, remove a couple of unnecessary empty lines.

Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230718192453.543549-4-fabrizio.castro.jz@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Fabrizio Castro 2023-07-18 20:24:52 +01:00 committed by Mark Brown
parent 8dc4038a02
commit 7b63568fce
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GPG Key ID: 24D68B725D5487D0
1 changed files with 3 additions and 18 deletions
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21
drivers/spi/spi-rzv2m-csi.c
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@ -10,6 +10,7 @@
#include <linux/count_zeros.h>
#include <linux/interrupt.h>
#include <linux/iopoll.h>
#include <linux/log2.h>
#include <linux/platform_device.h>
#include <linux/reset.h>
#include <linux/spi/spi.h>
@ -99,20 +100,6 @@ struct rzv2m_csi_priv {
u32 status;
};
static const unsigned char x_trg[] = {
0, 1, 1, 2, 2, 2, 2, 3,
3, 3, 3, 3, 3, 3, 3, 4,
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 5
};
static const unsigned char x_trg_words[] = {
1, 2, 2, 4, 4, 4, 4, 8,
8, 8, 8, 8, 8, 8, 8, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 32
};
static void rzv2m_csi_reg_write_bit(const struct rzv2m_csi_priv *csi,
int reg_offs, int bit_mask, u32 value)
{
@ -230,7 +217,7 @@ static inline void rzv2m_csi_calc_current_transfer(struct rzv2m_csi_priv *csi)
* less than or equal to the number of bytes we need to transfer.
* This may result in multiple smaller transfers.
*/
csi->words_to_transfer = x_trg_words[to_transfer - 1];
csi->words_to_transfer = rounddown_pow_of_two(to_transfer);
if (csi->bytes_per_word == 2)
csi->bytes_to_transfer = csi->words_to_transfer << 1;
@ -241,7 +228,7 @@ static inline void rzv2m_csi_calc_current_transfer(struct rzv2m_csi_priv *csi)
static inline void rzv2m_csi_set_rx_fifo_trigger_level(struct rzv2m_csi_priv *csi)
{
rzv2m_csi_reg_write_bit(csi, CSI_FIFOTRG, CSI_FIFOTRG_R_TRG,
x_trg[csi->words_to_transfer - 1]);
ilog2(csi->words_to_transfer));
}
static inline void rzv2m_csi_enable_rx_trigger(struct rzv2m_csi_priv *csi,
@ -314,7 +301,6 @@ static int rzv2m_csi_wait_for_tx_empty(struct rzv2m_csi_priv *csi)
return 0;
ret = rzv2m_csi_wait_for_interrupt(csi, CSI_INT_TREND, CSI_CNT_TREND_E);
if (ret == -ETIMEDOUT)
csi->errors |= TX_TIMEOUT_ERROR;
@ -330,7 +316,6 @@ static inline int rzv2m_csi_wait_for_rx_ready(struct rzv2m_csi_priv *csi)
ret = rzv2m_csi_wait_for_interrupt(csi, CSI_INT_R_TRGR,
CSI_CNT_R_TRGR_E);
if (ret == -ETIMEDOUT)
csi->errors |= RX_TIMEOUT_ERROR;