diff options
Diffstat (limited to 'meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0001-Revert-mmc-renesas_sdhi_internal_dmac-limit-DMA-RX-f.patch')
| -rw-r--r-- | meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0001-Revert-mmc-renesas_sdhi_internal_dmac-limit-DMA-RX-f.patch | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0001-Revert-mmc-renesas_sdhi_internal_dmac-limit-DMA-RX-f.patch b/meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0001-Revert-mmc-renesas_sdhi_internal_dmac-limit-DMA-RX-f.patch deleted file mode 100644 index 1d7fa7a..0000000 --- a/meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0001-Revert-mmc-renesas_sdhi_internal_dmac-limit-DMA-RX-f.patch +++ /dev/null @@ -1,112 +0,0 @@ -From 001e18801fa28bbcd02c86707bc56d87ebabca60 Mon Sep 17 00:00:00 2001 -From: Masaharu Hayakawa <masaharu.hayakawa.ry@renesas.com> -Date: Fri, 15 Jun 2018 17:57:43 +0900 -Subject: [PATCH] Revert "mmc: renesas_sdhi_internal_dmac: limit DMA RX for old - SoCs" - -This reverts commit fbd708880ca045a4583a4d2ca2f67e8a41ddab62. - -It solves the problem that SD card / eMMC partition information can not -be read correctly on a device operating with force_pio. - -This revert is a workaround due to difference effect with upstream code. - -Signed-off-by: Masaharu Hayakawa <masaharu.hayakawa.ry@renesas.com> -Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com> - -Conflicts: - drivers/mmc/host/renesas_sdhi_internal_dmac.c ---- - drivers/mmc/host/renesas_sdhi_internal_dmac.c | 32 +------------------ - 1 file changed, 1 insertion(+), 31 deletions(-) - -diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c b/drivers/mmc/host/renesas_sdhi_internal_dmac.c -index 2f24a4890418..ba15ea2c9b9f 100644 ---- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c -+++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c -@@ -9,7 +9,6 @@ - * published by the Free Software Foundation. - */ - --#include <linux/bitops.h> - #include <linux/device.h> - #include <linux/dma-mapping.h> - #include <linux/io-64-nonatomic-hi-lo.h> -@@ -64,17 +63,6 @@ - * need a custom accessor. - */ - --static unsigned long global_flags; --/* -- * Workaround for avoiding to use RX DMAC by multiple channels. -- * On R-Car H3 ES1.* and M3-W ES1.0, when multiple SDHI channels use -- * RX DMAC simultaneously, sometimes hundreds of bytes data are not -- * stored into the system memory even if the DMAC interrupt happened. -- * So, this driver then uses one RX DMAC channel only. -- */ --#define SDHI_INTERNAL_DMAC_ONE_RX_ONLY 0 --#define SDHI_INTERNAL_DMAC_RX_IN_USE 1 -- - /* Definitions for sampling clocks */ - static struct renesas_sdhi_scc rcar_gen3_scc_taps[] = { - { -@@ -150,9 +138,6 @@ renesas_sdhi_internal_dmac_abort_dma(struct tmio_mmc_host *host) { - renesas_sdhi_internal_dmac_dm_write(host, DM_CM_RST, - RST_RESERVED_BITS | val); - -- if (host->data && host->data->flags & MMC_DATA_READ) -- clear_bit(SDHI_INTERNAL_DMAC_RX_IN_USE, &global_flags); -- - renesas_sdhi_internal_dmac_enable_dma(host, true); - } - -@@ -176,9 +161,6 @@ renesas_sdhi_internal_dmac_start_dma(struct tmio_mmc_host *host, - - if (data->flags & MMC_DATA_READ) { - dtran_mode |= DTRAN_MODE_CH_NUM_CH1; -- if (test_bit(SDHI_INTERNAL_DMAC_ONE_RX_ONLY, &global_flags) && -- test_and_set_bit(SDHI_INTERNAL_DMAC_RX_IN_USE, &global_flags)) -- goto force_pio; - } else { - dtran_mode |= DTRAN_MODE_CH_NUM_CH0; - } -@@ -227,9 +209,6 @@ static void renesas_sdhi_internal_dmac_complete_tasklet_fn(unsigned long arg) - host->data->host_cookie = COOKIE_UNMAPPED; - } - -- if (host->data->flags & MMC_DATA_READ) -- clear_bit(SDHI_INTERNAL_DMAC_RX_IN_USE, &global_flags); -- - tmio_mmc_do_data_irq(host); - out: - spin_unlock_irq(&host->lock); -@@ -298,11 +277,6 @@ static const struct tmio_mmc_dma_ops renesas_sdhi_internal_dmac_dma_ops = { - * implementation as others may use a different implementation. - */ - static const struct soc_device_attribute gen3_soc_whitelist[] = { -- /* specific ones */ -- { .soc_id = "r8a7795", .revision = "ES1.*", -- .data = (void *)BIT(SDHI_INTERNAL_DMAC_ONE_RX_ONLY) }, -- { .soc_id = "r8a7796", .revision = "ES1.0", -- .data = (void *)BIT(SDHI_INTERNAL_DMAC_ONE_RX_ONLY) }, - /* generic ones */ - { .soc_id = "r8a7795" }, - { .soc_id = "r8a7796" }, -@@ -314,13 +288,9 @@ static const struct soc_device_attribute gen3_soc_whitelist[] = { - - static int renesas_sdhi_internal_dmac_probe(struct platform_device *pdev) - { -- const struct soc_device_attribute *soc = soc_device_match(gen3_soc_whitelist); -- -- if (!soc) -+ if (!soc_device_match(gen3_soc_whitelist)) - return -ENODEV; - -- global_flags |= (unsigned long)soc->data; -- - #ifndef CONFIG_MMC_SDHI_PIO - return renesas_sdhi_probe(pdev, &renesas_sdhi_internal_dmac_dma_ops); - #else --- -2.17.1 - |