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Subject[PATCH v3 07/16] mmc: renesas_sdhi: use MMC_CAP2_NO_WRITE_PROTECT instead of TMIO own flag
Date
TMIO_MMC_WRPROTECT_DISABLE is equivalent to MMC_CAP2_NO_WRITE_PROTECT.

The flag is propagated as follows:
renesas_sdhi_of_data::capabilities2
-> tmio_mmc_data::capabilities2
-> mmc_host::caps2

Only the difference is the TMIO_... makes tmio_mmc_get_ro() return 0
(i.e. it does not affect mmc_gpio_get_ro() at all), while MMC_CAP2_...
returns 0 before calling ->get_ro() hook (i.e. it affects both IP own
logic and GPIO detection).

The TMIO MMC drivers do not set-up gpio_ro by themselves. Only the
possibility, if any, would be DT specifies "wp-gpios" property, and
gpio_ro is set by mmc_gpiod_request_ro() called from mmc_of_parse().
However, it does not make sense to specify "wp-gpios" property and
TMIO_MMC_WRPROTECT_DISABLE at the same time.

I checked under arch/arm/boot/dts/ and arch/arm64/boot/dts/renesas/,
and I did not see any Renesas boards with "wp-gpios". So, this
conversion should be safe.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

Changes in v3:
- newly added

Changes in v2: None

drivers/mmc/host/renesas_sdhi_internal_dmac.c | 6 +++---
drivers/mmc/host/renesas_sdhi_sys_dmac.c | 16 ++++++++--------
2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
index 02c2724..0d1f95e 100644
--- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c
+++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
@@ -71,11 +71,11 @@ static struct renesas_sdhi_scc rcar_gen3_scc_taps[] = {
};

static const struct renesas_sdhi_of_data of_rcar_gen3_compatible = {
- .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE |
- TMIO_MMC_CLK_ACTUAL | TMIO_MMC_HAVE_CBSY |
- TMIO_MMC_MIN_RCAR2,
+ .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_CLK_ACTUAL |
+ TMIO_MMC_HAVE_CBSY | TMIO_MMC_MIN_RCAR2,
.capabilities = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ |
MMC_CAP_CMD23,
+ .capabilities2 = MMC_CAP2_NO_WRITE_PROTECT,
.bus_shift = 2,
.scc_offset = 0x1000,
.taps = rcar_gen3_scc_taps,
diff --git a/drivers/mmc/host/renesas_sdhi_sys_dmac.c b/drivers/mmc/host/renesas_sdhi_sys_dmac.c
index c8a74b2..afdb66b 100644
--- a/drivers/mmc/host/renesas_sdhi_sys_dmac.c
+++ b/drivers/mmc/host/renesas_sdhi_sys_dmac.c
@@ -40,9 +40,9 @@ static const struct renesas_sdhi_of_data of_rz_compatible = {
};

static const struct renesas_sdhi_of_data of_rcar_gen1_compatible = {
- .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE |
- TMIO_MMC_CLK_ACTUAL,
+ .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_CLK_ACTUAL,
.capabilities = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ,
+ .capabilities2 = MMC_CAP2_NO_WRITE_PROTECT,
};

/* Definitions for sampling clocks */
@@ -58,11 +58,11 @@ static struct renesas_sdhi_scc rcar_gen2_scc_taps[] = {
};

static const struct renesas_sdhi_of_data of_rcar_gen2_compatible = {
- .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE |
- TMIO_MMC_CLK_ACTUAL | TMIO_MMC_HAVE_CBSY |
- TMIO_MMC_MIN_RCAR2,
+ .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_CLK_ACTUAL |
+ TMIO_MMC_HAVE_CBSY | TMIO_MMC_MIN_RCAR2,
.capabilities = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ |
MMC_CAP_CMD23,
+ .capabilities2 = MMC_CAP2_NO_WRITE_PROTECT,
.dma_buswidth = DMA_SLAVE_BUSWIDTH_4_BYTES,
.dma_rx_offset = 0x2000,
.scc_offset = 0x0300,
@@ -79,11 +79,11 @@ static struct renesas_sdhi_scc rcar_gen3_scc_taps[] = {
};

static const struct renesas_sdhi_of_data of_rcar_gen3_compatible = {
- .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE |
- TMIO_MMC_CLK_ACTUAL | TMIO_MMC_HAVE_CBSY |
- TMIO_MMC_MIN_RCAR2,
+ .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_CLK_ACTUAL |
+ TMIO_MMC_HAVE_CBSY | TMIO_MMC_MIN_RCAR2,
.capabilities = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ |
MMC_CAP_CMD23,
+ .capabilities2 = MMC_CAP2_NO_WRITE_PROTECT,
.bus_shift = 2,
.scc_offset = 0x1000,
.taps = rcar_gen3_scc_taps,
--
2.7.4
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