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| author | Fabien Dessenne <fabien.dessenne@st.com> | 2019-10-30 14:38:31 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2020-01-07 11:13:25 -0500 |
| commit | 4a4deb870f9a19569e6b86afe36d0e0fbee4fa61 (patch) | |
| tree | 6c332480587757171bb3563351c2702afc96ed77 /drivers/remoteproc/stm32_copro.c | |
| parent | 7bff971a145c9fa0aa59c61c1fe0081c6b2db6dd (diff) | |
| download | u-boot-4a4deb870f9a19569e6b86afe36d0e0fbee4fa61.tar.gz u-boot-4a4deb870f9a19569e6b86afe36d0e0fbee4fa61.tar.xz u-boot-4a4deb870f9a19569e6b86afe36d0e0fbee4fa61.zip | |
remoteproc: stm32: track the coprocessor state in a backup register
Update the dedicated backup register to track the coprocessor state and
rely on that register to compute the .is_running() value (which expects
a return value of 0 -not 1- if the processor is running).
Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Acked-by: Patrick Delaunay <patrick.delaunay@st.com>
Diffstat (limited to 'drivers/remoteproc/stm32_copro.c')
| -rw-r--r-- | drivers/remoteproc/stm32_copro.c | 17 |
1 files changed, 5 insertions, 12 deletions
diff --git a/drivers/remoteproc/stm32_copro.c b/drivers/remoteproc/stm32_copro.c index 40bba37211..dcafa549d6 100644 --- a/drivers/remoteproc/stm32_copro.c +++ b/drivers/remoteproc/stm32_copro.c @@ -22,14 +22,12 @@ * @hold_boot_regmap: regmap for remote processor reset hold boot * @hold_boot_offset: offset of the register controlling the hold boot setting * @hold_boot_mask: bitmask of the register for the hold boot field - * @is_running: is the remote processor running */ struct stm32_copro_privdata { struct reset_ctl reset_ctl; struct regmap *hold_boot_regmap; uint hold_boot_offset; uint hold_boot_mask; - bool is_running; }; /** @@ -165,11 +163,8 @@ static int stm32_copro_load(struct udevice *dev, ulong addr, ulong size) */ static int stm32_copro_start(struct udevice *dev) { - struct stm32_copro_privdata *priv; int ret; - priv = dev_get_priv(dev); - /* move hold boot from true to false start the copro */ ret = stm32_copro_set_hold_boot(dev, false); if (ret) @@ -180,7 +175,8 @@ static int stm32_copro_start(struct udevice *dev) * rebooting autonomously */ ret = stm32_copro_set_hold_boot(dev, true); - priv->is_running = !ret; + writel(ret ? TAMP_COPRO_STATE_OFF : TAMP_COPRO_STATE_CRUN, + TAMP_COPRO_STATE); return ret; } @@ -206,7 +202,7 @@ static int stm32_copro_reset(struct udevice *dev) return ret; } - priv->is_running = false; + writel(TAMP_COPRO_STATE_OFF, TAMP_COPRO_STATE); return 0; } @@ -224,14 +220,11 @@ static int stm32_copro_stop(struct udevice *dev) /** * stm32_copro_is_running() - Is the STM32 remote processor running * @dev: corresponding STM32 remote processor device - * @return 1 if the remote processor is running, 0 otherwise + * @return 0 if the remote processor is running, 1 otherwise */ static int stm32_copro_is_running(struct udevice *dev) { - struct stm32_copro_privdata *priv; - - priv = dev_get_priv(dev); - return priv->is_running; + return (readl(TAMP_COPRO_STATE) == TAMP_COPRO_STATE_OFF); } static const struct dm_rproc_ops stm32_copro_ops = { |