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spi_nxp_lpspi: Fix word size > 8

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Fix calculations for larger than 8 bit word sizes

Signed-off-by: Declan Snyder <declan.snyder@nxp.com>
This commit is contained in:
Declan Snyder 2025-04-04 15:41:15 -05:00 • committed by Benjamin Cabé
commit 9d0762a1b8
1 changed files with 3 additions and 5 deletions
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8
drivers/spi/spi_nxp_lpspi/spi_nxp_lpspi.c
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@ -33,7 +33,7 @@ static inline void lpspi_rx_word_write_bytes(const struct device *dev, size_t of
struct lpspi_data *data = dev->data; struct lpspi_data *data = dev->data;
struct lpspi_driver_data *lpspi_data = (struct lpspi_driver_data *)data->driver_data; struct lpspi_driver_data *lpspi_data = (struct lpspi_driver_data *)data->driver_data;
struct spi_context *ctx = &data->ctx; struct spi_context *ctx = &data->ctx;
uint8_t num_bytes = MIN(lpspi_data->word_size_bytes, ctx->rx_len); uint8_t num_bytes = lpspi_data->word_size_bytes;
uint8_t *buf = ctx->rx_buf + offset; uint8_t *buf = ctx->rx_buf + offset;
uint32_t word = base->RDR; uint32_t word = base->RDR;
@ -53,7 +53,7 @@ static inline size_t lpspi_rx_buf_write_words(const struct device *dev, uint8_t
struct lpspi_data *data = dev->data; struct lpspi_data *data = dev->data;
struct lpspi_driver_data *lpspi_data = (struct lpspi_driver_data *)data->driver_data; struct lpspi_driver_data *lpspi_data = (struct lpspi_driver_data *)data->driver_data;
struct spi_context *ctx = &data->ctx; struct spi_context *ctx = &data->ctx;
size_t buf_len = DIV_ROUND_UP(ctx->rx_len, lpspi_data->word_size_bytes); size_t buf_len = ctx->rx_len;
uint8_t words_read = 0; uint8_t words_read = 0;
size_t offset = 0; size_t offset = 0;
@ -156,9 +156,7 @@ static void lpspi_next_tx_fill(const struct device *dev)
size_t fill_len; size_t fill_len;
size_t actual_filled = 0; size_t actual_filled = 0;
/* Convert bytes to words for this xfer */ fill_len = MIN(ctx->tx_len, config->tx_fifo_size);
fill_len = DIV_ROUND_UP(spi_context_tx_len_left(ctx), lpspi_data->word_size_bytes);
fill_len = MIN(fill_len, config->tx_fifo_size);
const struct spi_buf *current_buf = ctx->current_tx; const struct spi_buf *current_buf = ctx->current_tx;
const uint8_t *cur_buf_pos = ctx->tx_buf; const uint8_t *cur_buf_pos = ctx->tx_buf;