From 7653aaab775d4c205a7dce52850c8e3d4f31d4ea Mon Sep 17 00:00:00 2001 From: Timur Tabi Date: Sat, 9 Jul 2011 15:38:14 -0500 Subject: drivers/video: use strings to specify the Freescale DIU monitor port Instead of using ill-defined numbers (0, 1, and 2) for the monitor port, allow the user to specify the port by name ("dvi", "lvds", or "dlvds"). This works on the kernel command line, the module command-line, and the sysfs "monitor" device. Note that changing the monitor port does not currently work on the P1022DS, because the code that talks to the PIXIS FPGA is broken. Signed-off-by: Timur Tabi Acked-by: Anatolij Gustschin Signed-off-by: Paul Mundt --- arch/powerpc/platforms/86xx/mpc8610_hpcd.c | 55 ++++++++++++++---------------- 1 file changed, 25 insertions(+), 30 deletions(-) (limited to 'arch/powerpc/platforms/86xx') diff --git a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c index a896511690c2..0d80e9614f31 100644 --- a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c +++ b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c @@ -145,10 +145,10 @@ machine_device_initcall(mpc86xx_hpcd, mpc8610_declare_of_platform_devices); (c2 << AD_COMP_2_SHIFT) | (c1 << AD_COMP_1_SHIFT) | \ (c0 << AD_COMP_0_SHIFT) | (size << AD_PIXEL_S_SHIFT)) -unsigned int mpc8610hpcd_get_pixel_format(unsigned int bits_per_pixel, - int monitor_port) +u32 mpc8610hpcd_get_pixel_format(enum fsl_diu_monitor_port port, + unsigned int bits_per_pixel) { - static const unsigned long pixelformat[][3] = { + static const u32 pixelformat[][3] = { { MAKE_AD(3, 0, 2, 1, 3, 8, 8, 8, 8), MAKE_AD(4, 2, 0, 1, 2, 8, 8, 8, 0), @@ -163,7 +163,8 @@ unsigned int mpc8610hpcd_get_pixel_format(unsigned int bits_per_pixel, unsigned int arch_monitor; /* The DVI port is mis-wired on revision 1 of this board. */ - arch_monitor = ((*pixis_arch == 0x01) && (monitor_port == 0))? 0 : 1; + arch_monitor = + ((*pixis_arch == 0x01) && (port == FSL_DIU_PORT_DVI)) ? 0 : 1; switch (bits_per_pixel) { case 32: @@ -178,10 +179,11 @@ unsigned int mpc8610hpcd_get_pixel_format(unsigned int bits_per_pixel, } } -void mpc8610hpcd_set_gamma_table(int monitor_port, char *gamma_table_base) +void mpc8610hpcd_set_gamma_table(enum fsl_diu_monitor_port port, + char *gamma_table_base) { int i; - if (monitor_port == 2) { /* dual link LVDS */ + if (port == FSL_DIU_PORT_DLVDS) { for (i = 0; i < 256*3; i++) gamma_table_base[i] = (gamma_table_base[i] << 2) | ((gamma_table_base[i] >> 6) & 0x03); @@ -192,17 +194,21 @@ void mpc8610hpcd_set_gamma_table(int monitor_port, char *gamma_table_base) #define PX_BRDCFG0_DLINK (1 << 4) #define PX_BRDCFG0_DIU_MASK (PX_BRDCFG0_DVISEL | PX_BRDCFG0_DLINK) -void mpc8610hpcd_set_monitor_port(int monitor_port) +void mpc8610hpcd_set_monitor_port(enum fsl_diu_monitor_port port) { - static const u8 bdcfg[] = { - PX_BRDCFG0_DVISEL | PX_BRDCFG0_DLINK, - PX_BRDCFG0_DLINK, - 0, - }; - - if (monitor_port < 3) + switch (port) { + case FSL_DIU_PORT_DVI: clrsetbits_8(pixis_bdcfg0, PX_BRDCFG0_DIU_MASK, - bdcfg[monitor_port]); + PX_BRDCFG0_DVISEL | PX_BRDCFG0_DLINK); + break; + case FSL_DIU_PORT_LVDS: + clrsetbits_8(pixis_bdcfg0, PX_BRDCFG0_DIU_MASK, + PX_BRDCFG0_DLINK); + break; + case FSL_DIU_PORT_DLVDS: + clrbits8(pixis_bdcfg0, PX_BRDCFG0_DIU_MASK); + break; + } } void mpc8610hpcd_set_pixel_clock(unsigned int pixclock) @@ -273,20 +279,10 @@ void mpc8610hpcd_set_pixel_clock(unsigned int pixclock) iounmap(clkdvdr); } -ssize_t mpc8610hpcd_show_monitor_port(int monitor_port, char *buf) -{ - return snprintf(buf, PAGE_SIZE, - "%c0 - DVI\n" - "%c1 - Single link LVDS\n" - "%c2 - Dual link LVDS\n", - monitor_port == 0 ? '*' : ' ', - monitor_port == 1 ? '*' : ' ', - monitor_port == 2 ? '*' : ' '); -} - -int mpc8610hpcd_set_sysfs_monitor_port(int val) +enum fsl_diu_monitor_port +mpc8610hpcd_valid_monitor_port(enum fsl_diu_monitor_port port) { - return val < 3 ? val : 0; + return port; } #endif @@ -318,8 +314,7 @@ static void __init mpc86xx_hpcd_setup_arch(void) diu_ops.set_gamma_table = mpc8610hpcd_set_gamma_table; diu_ops.set_monitor_port = mpc8610hpcd_set_monitor_port; diu_ops.set_pixel_clock = mpc8610hpcd_set_pixel_clock; - diu_ops.show_monitor_port = mpc8610hpcd_show_monitor_port; - diu_ops.set_sysfs_monitor_port = mpc8610hpcd_set_sysfs_monitor_port; + diu_ops.valid_monitor_port = mpc8610hpcd_valid_monitor_port; #endif pixis_node = of_find_compatible_node(NULL, NULL, "fsl,fpga-pixis"); -- cgit v1.2.3