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author | Gabor Juhos <juhosg@openwrt.org> | 2012-12-17 22:28:09 +0000 |
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committer | Gabor Juhos <juhosg@openwrt.org> | 2012-12-17 22:28:09 +0000 |
commit | fc0da6852e9b0586d6cd1ea79378824639b56e01 (patch) | |
tree | 8a36b55916665137eb580e0265282fb4f820e707 /target/linux/ar71xx/patches-3.3/463-spi-ath79-add-fast-flash-read.patch | |
parent | bf34eeaea4ad8079fdc188dd0b8ff834401a9b31 (diff) | |
download | master-31e0f0ae-fc0da6852e9b0586d6cd1ea79378824639b56e01.tar.gz master-31e0f0ae-fc0da6852e9b0586d6cd1ea79378824639b56e01.tar.bz2 master-31e0f0ae-fc0da6852e9b0586d6cd1ea79378824639b56e01.zip |
ar71xx: nuke 3.3 support
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
SVN-Revision: 34743
Diffstat (limited to 'target/linux/ar71xx/patches-3.3/463-spi-ath79-add-fast-flash-read.patch')
-rw-r--r-- | target/linux/ar71xx/patches-3.3/463-spi-ath79-add-fast-flash-read.patch | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/target/linux/ar71xx/patches-3.3/463-spi-ath79-add-fast-flash-read.patch b/target/linux/ar71xx/patches-3.3/463-spi-ath79-add-fast-flash-read.patch deleted file mode 100644 index 9ccc4a45e0..0000000000 --- a/target/linux/ar71xx/patches-3.3/463-spi-ath79-add-fast-flash-read.patch +++ /dev/null @@ -1,185 +0,0 @@ ---- a/drivers/spi/spi-ath79.c -+++ b/drivers/spi/spi-ath79.c -@@ -37,6 +37,11 @@ - - #define ATH79_SPI_CS_LINE_MAX 2 - -+enum ath79_spi_state { -+ ATH79_SPI_STATE_WAIT_CMD = 0, -+ ATH79_SPI_STATE_WAIT_READ, -+}; -+ - struct ath79_spi { - struct spi_bitbang bitbang; - u32 ioc_base; -@@ -44,6 +49,11 @@ struct ath79_spi { - void __iomem *base; - struct clk *clk; - unsigned rrw_delay; -+ -+ enum ath79_spi_state state; -+ u32 clk_div; -+ unsigned long read_addr; -+ unsigned long ahb_rate; - }; - - static inline u32 ath79_spi_rr(struct ath79_spi *sp, unsigned reg) -@@ -111,9 +121,6 @@ static void ath79_spi_enable(struct ath7 - /* save CTRL register */ - sp->reg_ctrl = ath79_spi_rr(sp, AR71XX_SPI_REG_CTRL); - sp->ioc_base = ath79_spi_rr(sp, AR71XX_SPI_REG_IOC); -- -- /* TODO: setup speed? */ -- ath79_spi_wr(sp, AR71XX_SPI_REG_CTRL, 0x43); - } - - static void ath79_spi_disable(struct ath79_spi *sp) -@@ -232,6 +239,110 @@ static u32 ath79_spi_txrx_mode0(struct s - return ath79_spi_rr(sp, AR71XX_SPI_REG_RDS); - } - -+static int ath79_spi_do_read_flash_data(struct spi_device *spi, -+ struct spi_transfer *t) -+{ -+ struct ath79_spi *sp = ath79_spidev_to_sp(spi); -+ -+ /* disable GPIO mode */ -+ ath79_spi_wr(sp, AR71XX_SPI_REG_FS, 0); -+ -+ memcpy_fromio(t->rx_buf, sp->base + sp->read_addr, t->len); -+ -+ /* enable GPIO mode */ -+ ath79_spi_wr(sp, AR71XX_SPI_REG_FS, AR71XX_SPI_FS_GPIO); -+ -+ /* restore IOC register */ -+ ath79_spi_wr(sp, AR71XX_SPI_REG_IOC, sp->ioc_base); -+ -+ return t->len; -+} -+ -+static int ath79_spi_do_read_flash_cmd(struct spi_device *spi, -+ struct spi_transfer *t) -+{ -+ struct ath79_spi *sp = ath79_spidev_to_sp(spi); -+ int len; -+ const u8 *p; -+ -+ sp->read_addr = 0; -+ -+ len = t->len - 1; -+ p = t->tx_buf; -+ -+ while (len--) { -+ p++; -+ sp->read_addr <<= 8; -+ sp->read_addr |= *p; -+ } -+ -+ return t->len; -+} -+ -+static bool ath79_spi_is_read_cmd(struct spi_device *spi, -+ struct spi_transfer *t) -+{ -+ return t->type == SPI_TRANSFER_FLASH_READ_CMD; -+} -+ -+static bool ath79_spi_is_data_read(struct spi_device *spi, -+ struct spi_transfer *t) -+{ -+ return t->type == SPI_TRANSFER_FLASH_READ_DATA; -+} -+ -+static int ath79_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t) -+{ -+ struct ath79_spi *sp = ath79_spidev_to_sp(spi); -+ int ret; -+ -+ switch (sp->state) { -+ case ATH79_SPI_STATE_WAIT_CMD: -+ if (ath79_spi_is_read_cmd(spi, t)) { -+ ret = ath79_spi_do_read_flash_cmd(spi, t); -+ sp->state = ATH79_SPI_STATE_WAIT_READ; -+ } else { -+ ret = spi_bitbang_bufs(spi, t); -+ } -+ break; -+ -+ case ATH79_SPI_STATE_WAIT_READ: -+ if (ath79_spi_is_data_read(spi, t)) { -+ ret = ath79_spi_do_read_flash_data(spi, t); -+ } else { -+ dev_warn(&spi->dev, "flash data read expected\n"); -+ ret = -EIO; -+ } -+ sp->state = ATH79_SPI_STATE_WAIT_CMD; -+ break; -+ -+ default: -+ BUG(); -+ } -+ -+ return ret; -+} -+ -+static int ath79_spi_setup_transfer(struct spi_device *spi, -+ struct spi_transfer *t) -+{ -+ struct ath79_spi *sp = ath79_spidev_to_sp(spi); -+ struct ath79_spi_controller_data *cdata; -+ int ret; -+ -+ ret = spi_bitbang_setup_transfer(spi, t); -+ if (ret) -+ return ret; -+ -+ cdata = spi->controller_data; -+ if (cdata->is_flash) -+ sp->bitbang.txrx_bufs = ath79_spi_txrx_bufs; -+ else -+ sp->bitbang.txrx_bufs = spi_bitbang_bufs; -+ -+ return ret; -+} -+ - static __devinit int ath79_spi_probe(struct platform_device *pdev) - { - struct spi_master *master; -@@ -254,6 +365,8 @@ static __devinit int ath79_spi_probe(str - sp = spi_master_get_devdata(master); - platform_set_drvdata(pdev, sp); - -+ sp->state = ATH79_SPI_STATE_WAIT_CMD; -+ - master->setup = ath79_spi_setup; - master->cleanup = ath79_spi_cleanup; - master->bus_num = pdata->bus_num; -@@ -262,7 +375,7 @@ static __devinit int ath79_spi_probe(str - sp->bitbang.master = spi_master_get(master); - sp->bitbang.chipselect = ath79_spi_chipselect; - sp->bitbang.txrx_word[SPI_MODE_0] = ath79_spi_txrx_mode0; -- sp->bitbang.setup_transfer = spi_bitbang_setup_transfer; -+ sp->bitbang.setup_transfer = ath79_spi_setup_transfer; - sp->bitbang.flags = SPI_CS_HIGH; - - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); -@@ -287,7 +400,8 @@ static __devinit int ath79_spi_probe(str - if (ret) - goto err_clk_put; - -- rate = DIV_ROUND_UP(clk_get_rate(sp->clk), MHZ); -+ sp->ahb_rate = clk_get_rate(sp->clk); -+ rate = DIV_ROUND_UP(sp->ahb_rate, MHZ); - if (!rate) { - ret = -EINVAL; - goto err_clk_disable; ---- a/arch/mips/include/asm/mach-ath79/ath79_spi_platform.h -+++ b/arch/mips/include/asm/mach-ath79/ath79_spi_platform.h -@@ -24,6 +24,7 @@ enum ath79_spi_cs_type { - struct ath79_spi_controller_data { - enum ath79_spi_cs_type cs_type; - unsigned cs_line; -+ bool is_flash; - }; - - #endif /* _ATH79_SPI_PLATFORM_H */ |