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staging: fbtft: fb_st7789v: reset display before initialization
commitb6821b0d9b
upstream. In rare cases the display is flipped or mirrored. This was observed more often in a low temperature environment. A clean reset on init_display() should help to get registers in a sane state. Fixes:ef8f317795
(staging: fbtft: use init function instead of init sequence) Cc: stable@vger.kernel.org Signed-off-by: Oliver Graute <oliver.graute@kococonnector.com> Link: https://lore.kernel.org/r/20220210085322.15676-1-oliver.graute@kococonnector.com [sudip: adjust context] Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -85,6 +85,8 @@ enum st7789v_command {
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*/
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static int init_display(struct fbtft_par *par)
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{
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par->fbtftops.reset(par);
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/* turn off sleep mode */
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write_reg(par, MIPI_DCS_EXIT_SLEEP_MODE);
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mdelay(120);
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