drm/i915: Move a bunch of stuff into rodata from the stack

Toss a bunch if constants into .rodata drom the stack. Also
shrink the types of some of the arrays to reduce the size.

bloat-o-meter -c intel_dpll_mgr.o:
add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-86 (-86)
Function                                     old     new   delta
icl_get_dplls                               3393    3372     -21
skl_get_dpll                                2069    2004     -65
Total: Before=28029, After=27943, chg -0.31%
add/remove: 0/0 grow/shrink: 0/0 up/down: 0/0 (0)
Data                                         old     new   delta
Total: Before=17, After=17, chg +0.00%
add/remove: 2/0 grow/shrink: 0/2 up/down: 28/-129 (-101)
RO Data                                      old     new   delta
dco_central_freq                               -      24     +24
div1_vals                                      -       4      +4
odd_dividers                                  28       7     -21
even_dividers                                144      36    -108
Total: Before=3600, After=3499, chg -2.81%

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220301173128.6988-3-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index 0a7687fd8096300c5c36872f58508ad83bb4206b..6250a42517a655de6c9e3ba8ae460a997235766f 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -1498,18 +1498,17 @@ skl_ddi_calculate_wrpll(int clock /* in Hz */,
                        int ref_clock,
                        struct skl_wrpll_params *wrpll_params)
 {
-       u64 afe_clock = clock * 5; /* AFE Clock is 5x Pixel clock */
-       u64 dco_central_freq[3] = { 8400000000ULL,
-                                   9000000000ULL,
-                                   9600000000ULL };
-       static const int even_dividers[] = {  4,  6,  8, 10, 12, 14, 16, 18, 20,
-                                            24, 28, 30, 32, 36, 40, 42, 44,
-                                            48, 52, 54, 56, 60, 64, 66, 68,
-                                            70, 72, 76, 78, 80, 84, 88, 90,
-                                            92, 96, 98 };
-       static const int odd_dividers[] = { 3, 5, 7, 9, 15, 21, 35 };
+       static const u64 dco_central_freq[3] = { 8400000000ULL,
+                                                9000000000ULL,
+                                                9600000000ULL };
+       static const u8 even_dividers[] = {  4,  6,  8, 10, 12, 14, 16, 18, 20,
+                                           24, 28, 30, 32, 36, 40, 42, 44,
+                                           48, 52, 54, 56, 60, 64, 66, 68,
+                                           70, 72, 76, 78, 80, 84, 88, 90,
+                                           92, 96, 98 };
+       static const u8 odd_dividers[] = { 3, 5, 7, 9, 15, 21, 35 };
        static const struct {
-               const int *list;
+               const u8 *list;
                int n_dividers;
        } dividers[] = {
                { even_dividers, ARRAY_SIZE(even_dividers) },
@@ -1520,6 +1519,7 @@ skl_ddi_calculate_wrpll(int clock /* in Hz */,
        };
        unsigned int dco, d, i;
        unsigned int p0, p1, p2;
+       u64 afe_clock = clock * 5; /* AFE Clock is 5x Pixel clock */
 
        for (d = 0; d < ARRAY_SIZE(dividers); d++) {
                for (dco = 0; dco < ARRAY_SIZE(dco_central_freq); dco++) {
@@ -2754,8 +2754,8 @@ static bool icl_mg_pll_find_divisors(int clock_khz, bool is_dp, bool use_ssc,
                                     struct intel_dpll_hw_state *state,
                                     bool is_dkl)
 {
+       static const u8 div1_vals[] = { 7, 5, 3, 2 };
        u32 dco_min_freq, dco_max_freq;
-       int div1_vals[] = {7, 5, 3, 2};
        unsigned int i;
        int div2;