mirror of https://github.com/hak5/openwrt.git
88 lines
2.1 KiB
Diff
88 lines
2.1 KiB
Diff
From da11da943487e2f724f25d409bcaa1f099637c0b Mon Sep 17 00:00:00 2001
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From: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
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Date: Sun, 13 Oct 2013 14:56:45 +0200
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Subject: sf: add slim probe funtions for SPL
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Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
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diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c
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index 2bba10c..380aa09 100644
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--- a/drivers/mtd/spi/sf_probe.c
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+++ b/drivers/mtd/spi/sf_probe.c
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@@ -365,3 +365,58 @@ void spi_flash_free(struct spi_flash *flash)
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spi_free_slave(flash->spi);
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free(flash);
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}
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+
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+#ifdef CONFIG_SPI_SPL_SIMPLE
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+int spl_spi_flash_probe(struct spi_flash *flash)
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+{
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+ struct spi_slave *spi;
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+ u8 idcode[5];
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+ int ret;
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+
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+ /* Setup spi_slave */
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+ spi = spi_setup_slave(CONFIG_SPL_SPI_BUS, CONFIG_SPL_SPI_CS,
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+ CONFIG_SPL_SPI_MAX_HZ, CONFIG_SPL_SPI_MODE);
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+ if (!spi) {
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+ debug("SF: Failed to set up slave\n");
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+ return -1;
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+ }
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+
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+ /* Claim spi bus */
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+ ret = spi_claim_bus(spi);
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+ if (ret) {
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+ debug("SF: Failed to claim SPI bus: %d\n", ret);
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+ goto err_claim_bus;
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+ }
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+
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+ /* Read the ID codes */
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+ ret = spi_flash_cmd(spi, CMD_READ_ID, idcode, sizeof(idcode));
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+ if (ret) {
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+ debug("SF: Failed to get idcodes\n");
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+ goto err_read_id;
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+ }
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+
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+ /* Validate params from spi_flash_params table */
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+ flash->spi = spi;
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+ ret = spi_flash_validate_params(flash, idcode);
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+ if (ret)
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+ goto err_read_id;
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+
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+ /* Release spi bus */
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+ spi_release_bus(spi);
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+
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+ return 0;
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+
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+err_read_id:
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+ spi_release_bus(spi);
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+err_claim_bus:
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+ spi_free_slave(spi);
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+ flash->spi = NULL;
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+
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+ return ret;
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+}
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+
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+void spl_spi_flash_free(struct spi_flash *flash)
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+{
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+ spi_free_slave(flash->spi);
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+}
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+#endif
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diff --git a/include/spi_flash.h b/include/spi_flash.h
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index 25ca8f1..411dd1b 100644
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--- a/include/spi_flash.h
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+++ b/include/spi_flash.h
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@@ -69,6 +69,9 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
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unsigned int max_hz, unsigned int spi_mode);
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void spi_flash_free(struct spi_flash *flash);
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+int spl_spi_flash_probe(struct spi_flash *flash);
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+void spl_spi_flash_free(struct spi_flash *flash);
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+
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static inline int spi_flash_read(struct spi_flash *flash, u32 offset,
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size_t len, void *buf)
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{
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--
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1.8.3.2
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